Research activity information

• Apr. 2023 文部科学省, 文部科学大臣表彰 若手科学者賞


• Nov. 2022 神戸大学, 令和4年度 学長表彰


• Oct. 2021 神戸大学, 令和3年度 学長表彰


• Nov. 2020 神戸大学, 優秀若手研究者賞・学長賞


• Nov. 2017 応用物理学会, 応用物理学会講演奨励賞, コロイド状シリコンナノ粒子の広範囲サイズ制御とその光学特性


• May 2013 European Materials Research Society, Young Scientist Award


• The 19th International Microscopy Congress, Best Poster Award

• Optical absorption of subwavelength silicon nanoparticles at telecom wavelengths

  Moritz Jünnemann, Nicola Carlon Zambon, Hiroshi Sugimoto, Minoru Fujii, Lukas Novotny, Martin Frimmer

  American Physical Society (APS), May 2025, Physical Review B, 111(19) (19)

  [Refereed]

  Scientific journal


• Immobilization of Mie‐Resonant Silicon Nanospheres on a Silica Substrate for Surface‐Enhanced Fluorescence

  Oanh Vu, Keisuke Ozawa, Mojtaba Karimi Habil, Hiroshi Sugimoto, Minoru Fujii

  Abstract A process to immobilize Mie‐resonant silicon nanospheres (Si NSs) on a large area substrate is developed for the application of surface‐enhanced fluorescence (SEF) biosensors. The surface of size‐purified Si NSs having the low‐order Mie resonances in the visible to near‐infrared range is functionalized with the epoxy group, and the Si NSs are immobilized on the surface of an amino‐terminated silica (SiO₂) substrate 1 × 1 cm ² in size by a fully wet process. The produced substrate exhibits a clear Mie resonant color. The wavelength of the reflectance maximum is controlled by the size of Si NSs, and the highest reflectance value reaches over 40%. In order to study the capability of the developed substrate as an SEF substrate, Lucifer Yellow CH dipotassium salt dye (LY) molecules are directly placed on the substrate and the photoluminescence (PL) properties are studied. The PL intensity is enhanced ≈14‐fold on a substrate on which Si NSs 129 nm in average diameters are immobilized. Theoretical calculations by taking into account the size distribution of Si NSs explain the observed size dependence of the enhancement factor.

  Wiley, Mar. 2025, Advanced Optical Materials, 13(11) (11)

  [Refereed]

  Scientific journal


• Routing Light Emission from Monolayer MoS2 by Mie Resonances of Crystalline Silicon Nanospheres

  Keisuke Ozawa, Hiroshi Sugimoto, Daisuke Shima, Tatsuki Hinamoto, Mojtaba Karimi Habil, Yan Joe Lee, Søren Raza, Keisuke Imaeda, Kosei Ueno, Mark L. Brongersma, Minoru Fujii

  Feb. 2025, ACS Applied Optical Materials

  [Refereed]

  Scientific journal


• Sub-Bandgap Photocurrent Enhancement in Silicon Nanodisk Hexagonal Array Induced by Fabry–Pérot Bound States in the Continuum

  Keisuke Moriasa, Hiroaki Hasebe, Hiroshi Sugimoto, Minoru Fujii

  American Chemical Society (ACS), Feb. 2025, ACS Photonics, 12(3) (3), 1658 - 1665

  [Refereed]

  Scientific journal


• Size- and Wavelength-Selective Optical Heating in Mie-Resonant Silicon Nanospheres for Nanothermometry and Photothermal Applications

  Kana Kondo, Mojtaba Karimi Habil, Kojiro Senda, Masato Adachi, Kenta Morita, Tatsuo Maruyama, Hiroshi Sugimoto, Minoru Fujii

  Oct. 2024, ACS Applied Nano Materials

  [Refereed]

  Scientific journal


• Achieving Ideal Magnetic Light Emission with Electric-Type Emitters

  Ruizhao Yao, Hiroshi Sugimoto, Tianhua Feng, Minoru Fujii, Shimei Liu, Xinming Li, Sheng Lan, Guang-Can Li

  American Chemical Society (ACS), Oct. 2024, Nano Letters, 24(42) (42), 13315 - 13323

  [Refereed]

  Scientific journal


• Optical trapping-induced crystallization promoted by gold and silicon nanoparticles

  Hao-Tse Su, Shao-Yuan Liu, Minoru Fujii, Hiroshi Sugimoto, Yoshito Y. Tanaka, Teruki Sugiyama

  Abstract This study investigates the promotion of sodium chlorate (NaClO₃) crystallization through optical trapping, enhanced by the addition of gold nanoparticles (AuNPs) and silicon nanoparticles (SiNPs). Using a focused laser beam at the air–solution interface of a saturated NaClO₃ solution with AuNPs or SiNPs, the aggregates of these particles were formed at the laser focus, the nucleation and growth of metastable NaClO₃ (m-NaClO₃) crystals were induced. Continued laser irradiation caused these m-NaClO₃ crystals to undergo repeated cycles of growth and dissolution, eventually transitioning to a stable crystal form. Our comparative analysis showed that AuNPs, due to their significant heating due to higher photon absorption efficiency, caused more pronounced size fluctuations in m-NaClO₃ crystals compared to the stable behavior observed with SiNPs. Interestingly, the maximum diameter of the m-NaClO₃ crystals that appeared during the size fluctuation step was consistent, regardless of nanoparticle type, concentration, or size. The crystallization process was also promoted by using polystyrene nanoparticles, which have minimal heating and electric field enhancement, suggesting that the reduction in activation energy for nucleation at the particle surface is a key factor. These findings provide critical insights into the mechanisms of laser-induced crystallization, emphasizing the roles of plasmonic heating, particle surfaces, and optical forces. Graphical abstract

  Springer Science and Business Media LLC, Aug. 2024, Photochemical & Photobiological Sciences

  Scientific journal


• Mie-Resonant Structural Color of Silicon Nanosphere Monolayer Coupled with Fabry–Pérot Cavity

  Jialu Song, Haruki Tanaka, Keisuke Moriasa, Hiroshi Sugimoto, Minoru Fujii

  Jul. 2024, ACS Applied Optical Materials

  [Refereed]

  Scientific journal


• Scattering/Fluorescence Dual-Mode Imaging in MnO2-Coated Silicon Nanospheres for Cancer Cell Detection.

  Masato Adachi, Hiroshi Sugimoto, Kenta Morita, Tatsuo Maruyama, Minoru Fujii

  A tumor microenvironment (TME)-responsive nanoprobe composed of a fluorescent dye-decorated silicon (Si) nanosphere core and a thin MnO2 shell is proposed for simple and intelligent detection of cancer cells. The Si nanosphere core with diameters of 100-200 nm provides environment-independent Mie scattering imaging, while, simultaneously, the MnO2 shell provides the capability to switch the on/off state of the dye fluorescence reacted to the glutathione (GSH) and/or H2O2 levels in a cancer cell. Si-MnO2 core-shell nanosphere probes are fabricated in a solution-based process from crystalline Si nanosphere cores. The fluorescence switching under exposure to GSH is demonstrated, and the mechanism is discussed based on detailed optical characterizations including single-particle spectroscopy. Different types of human cells are incubated with the nanoprobes, and a proof of concept experiment is performed. From the combination of the robust scattering images and GSH- and H2O2-sensitive fluorescence images, the feasibility of cancer cell detection by the multimodal nanoprobes is demonstrated.

  Jul. 2024, ACS applied materials & interfaces, 16(26) (26), 33963 - 33970, English, International magazine

  Scientific journal


• Universal Click-Chemistry Approach for the DNA Functionalization of Nanoparticles

  Nicole Siegel, Hiroaki Hasebe, Germán Chiarelli, Denis Garoli, Hiroshi Sugimoto, Minoru Fujii, Guillermo P. Acuna, Karol Kołątaj

  Jun. 2024, Journal of the American Chemical Society

  [Refereed]

  Scientific journal


• Core/shell architecture made from Mie-resonant silicon nanoparticle: Design, fabrication, and photonic applications

  Hiroshi Sugimoto, Minoru Fujii

  Jun. 2024, Chemical Physics Reviews

  [Refereed]

  Scientific journal


• Monolayer of Mie-Resonant Silicon Nanospheres for Structural Coloration

  Haruki Tanaka, Shinnosuke Hotta, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  Jan. 2024, ACS Applied Nano Materials, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Far‐Field Detection of Near‐Field Circular Dichroism Enhancements Induced by a Nanoantenna

  Jorge Olmos, Hiroshi Sugimoto, Minoru Fujii

  AbstractNanophotonics can enhance the inherent weak signal exhibited by chiral molecules in circular dichroism (CD) spectroscopy experiments. One mechanism to achieve this CD enhancement is based on increasing the optical chirality produced by nanophotonics antennas in their near‐field, where chiral molecules are placed. However, ascertaining whether this CD enhancement is reached presents significant experimental challenges due to the complexity of measuring near‐field optical chirality. Here, it is demonstrated that a local and single measurement of the degree of circular polarization in the far‐field enables quantifying near‐field CD enhancements. Thereby, based on this far‐field measurement, the optimal response of the antenna is predicted for enhanced chiral sensing. Experimental validation of this near‐to‐far‐field relation is provided for silicon spherical nanoantennas. The experimental results, supported by analytical theory and exact numerical simulations, can be interesting for the experimental characterization of devices capable of enhancing CD from a single far‐field Stokes measurement.

  Jan. 2024, Laser & Photonics Reviews, English

  Scientific journal


• Photoluminescence from FRET Pairs Coupled with Mie-Resonant Silicon Nanosphere

  Keisuke Ozawa, Masato Adachi, Hiroshi Sugimoto, Minoru Fujii

  Optically resonant nanoparticles decorated with donor-acceptor molecular pairs have been attracting attentions for applications as nanoprobes in bioimaging and biosensing. We produce composite nanoparticles composed of donor-acceptor molecular pairs and...

  2024, Nanoscale, English

  Scientific journal


• Single-Nanometer-Sized Boron and Phosphorus Co-Doped Silicon Nanoparticles for Negative Electrode of Lithium-Ion Batteries

  Hiroki Yoshikawa, Taiki Ueshima, Hiroshi Sugimoto, Jingchao Xu, Minoru Mizuhata, Minoru Fujii

  Dec. 2023, ACS Applied Nano Materials, English

  Scientific journal


• Circularly Polarized Scattering Radiation From a Silicon Nanosphere

  Hidemasa Negoro, Hiroshi Sugimoto, Minoru Fujii

  AbstractA dielectric nanosphere with orthogonal electric dipole (ED) and magnetic dipole (MD) Mie resonances can be a nanoantenna radiating circularly polarized light in specific directions if the amplitudes and the phase relations are properly designed. First, theoretical calculations show that a silicon nanosphere illuminated with a linearly polarized plane wave radiates circularly polarized light at the wavelength in between the ED and MD resonances if the refractive index of a surrounding medium (nm) is ≈1.3; the ellipticity of the scattered light can be >0.99 when nm is in a 1.19–1.35 range. Size‐purified silicon nanospheres suspended in water (nm = 1.33) are then prepared, and the angle‐ and circular‐polarization‐resolved scattering spectra are studied. It is experimentally demonstrated that circularly polarized light is radiated in specific directions under linearly polarized plane wave illumination. The results also show that the wavelength of the radiation of circularly polarized light can be controlled in the whole visible range by controlling the silicon nanosphere diameter in 100–200 nm range.

  Oct. 2023, Advanced Optical Materials, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Formation of Fano line shapes in optical responses and spectra of internal fields of excitonic nanospheres

  Shinji Hayashi, Hiroshi Sugimoto, Minoru Fujii, Dmitry V. Nesterenko, Zouheir Sekkat

  American Physical Society (APS), Sep. 2023, Physical Review B, 108(12) (12)

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Selective Enhancement of Crystal‐Field‐Split Narrow f‐f Emission Lines of Europium Ions by Electric and Magnetic Purcell Effect of Mie Resonant Silicon Nanosphere

  Hiroki Kasai, Hiroshi Sugimoto, Minoru Fujii

  Abstract Narrow‐band Purcell enhancement for electric and magnetic dipole emitters by high‐order Mie resonances up to the magnetic and electric octupole modes of a silicon nanosphere antenna is experimentally demonstrated. Eu³⁺ complexes are attached on the surface of a silicon nanosphere 160 to 316 nm in diameter, and the photoluminescence and scattering properties are investigated. It is shown that the branching ratio of the ⁵D₀→⁷F_j (j = 0–4) f‐f transitions of Eu³⁺ is controlled in a wide range by tuning the resonance wavelength of a silicon nanosphere by the size. Because of the high‐quality factor resonances, not only a specific ⁵D₀→⁷F_j transition, but also a specific Stark sublevel transition whose spectral separation is 3–9 nm can be selectively enhanced by precisely controlling the size of a silicon nanosphere with the accuracy of ≈2 nm.

  Wiley, Aug. 2023, Advanced Optical Materials

  Scientific journal


• Photosensitizing Metasurface Empowered by Enhanced Magnetic Field of Toroidal Dipole Resonance

  Hiroaki Hasebe, Hiroshi Sugimoto, Yoshino Katsurayama, Taniyuki Furuyama, Minoru Fujii

  Abstract Photochemical reaction exploiting an excited triplet state (T₁) of a molecule requires two steps for the excitation, i.e., electronic transition from the ground (S₀) to singlet excited (S₁) states and intersystem crossing to the T₁ state. A dielectric metasurface coupled with photosensitizer that enables energy efficient photochemical reaction via the enhanced S₀→T₁ magnetic dipole transition is developed. In the direct S₀→T₁ transition, the photon energy of several hundreds of meV is saved compared to the conventional S₀→ S₁→T₁ transition. To maximize the magnetic field intensity on the surface, a silicon (Si) nanodisk array metasurface with toroidal dipole resonances is designed. The surface of the metasurface is functionalized with ruthenium (Ru(II)) complexes that work as a photosensitizer for singlet oxygen generation. In the coupled system, the rate of the direct S₀→T₁ transition of Ru(II) complexes is 41‐fold enhanced at the toroidal dipole resonance of a Si nanodisk array. The enhancement of a singlet oxygen generation rate is observed when the toroidal dipole resonance of a Si nanodisk array is matched with the direct S₀→T₁ transition wavelength of Ru(II) complexes.

  Wiley, Jun. 2023, Small

  Scientific journal


• Unidirectional Transverse Light Scattering in Notched Silicon Nanosphere

  Akira Matsumori, Hiroshi Sugimoto, Minoru Fujii

  Abstract A nanoantenna that has the capability to direct light to a preferred direction is of paramount importance in a variety of applications in nanophotonics. Directional light scattering by a nanoantenna is achieved by properly controlling the interference between the electric and magnetic multipolar modes. In this work, it is theoretically and experimentally demonstrated that introduction of a small perturbation, i.e., a formation of a notch, to a Mie resonant silicon nanosphere (Si NS) results in the formation of a unique structure exhibiting unidirectional transverse light scattering in the visible range. Based on comprehensive numerical simulations including exact multipole decomposition analyses, the mechanism of the unidirectional transverse scattering is discussed. It is also shown that a notched Si NS can generate a relatively large transverse optical force as the recoil of the unidirectional transverse scattering. Finally, notched Si NSs are fabricated by a solution‐based process. By combining incident‐angle resolved single particle scattering spectroscopy with numerical simulations, directional transverse light scattering of a notched Si NS is confirmed.

  Wiley, Jun. 2023, Laser & Photonics Reviews, 17(8) (8)

  Scientific journal


• Helicity-Preserving Optical Metafluids

  Hidemasa Negoro, Hiroshi Sugimoto, Minoru Fujii

  American Chemical Society (ACS), May 2023, Nano Letters, 23(11) (11), 5101 - 5107

  Scientific journal


• Bound states in the continuum (BIC) in silicon nanodisk array on mirror structure: Perfect absorption associated with quasi-BIC below the bandgap

  Keisuke Moriasa, Hiroaki Hasebe, Hiroshi Sugimoto, Minoru Fujii

  A structure composed of a hexagonal array of Si nanodisks having toroidal dipole resonances and a reflecting mirror separated by a SiO2 spacer is proposed as a platform that exhibits narrow-band perfect absorption in the Si sub-bandgap wavelength range for a CMOS compatible Si based photodetector operating below the bandgap range. The numerical simulation reveals that the structure possesses Fabry–Pérot bound states in the continuum at proper spacer thicknesses due to the interference between the toroidal dipole and its image dipole. By slightly detuning the spacer thickness to meet the critical coupling condition, narrow-band perfect absorption appears despite assumption of a very small extinction coefficient (5 × 10−4). The wavelength of the perfect absorption is controlled in a wide range by the structural parameters of a Si nanodisk hexagonal array and is insensitive to the fluctuation of the extinction coefficient and the choice of a metallic mirror. In the structure, over 90% of incident power can be absorbed in the Si region. This suggests that the structure can be used as a narrow-band photodetector operating in the Si sub-bandgap wavelength range. We also evaluate the sensing performance of the proposed structure as an intensity based refractive index sensor operating in the near-infrared range.

  AIP Publishing, May 2023, Journal of Applied Physics, 133(17) (17)

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Gallium Phosphide Nanoparticles for Low‐Loss Nanoantennas in Visible Range

  Daisuke Shima, Hiroshi Sugimoto, Artyom Assadillayev, Søren Raza, Minoru Fujii

  Wiley, Mar. 2023, Advanced Optical Materials, 2203107 - 2203107

  Scientific journal


• Visualizing the Nanoscopic Field Distribution of Whispering-Gallery Modes in a Dielectric Sphere by Cathodoluminescence

  Izzah Machfuudzoh, Tatsuki Hinamoto, F. Javier García de Abajo, Hiroshi Sugimoto, Minoru Fujii, Takumi Sannomiya

  American Chemical Society (ACS), Mar. 2023, ACS Photonics, 10(5) (5), 1434 - 1445

  Scientific journal


• Evidence for intrinsic defects and nanopores as hotspots in 2D PdSe2 dendrites for plasmon-free SERS substrate with a high enhancement factor

  Tadasha Jena, Md Tarik Hossain, Upasana Nath, Manabendra Sarma, Hiroshi Sugimoto, Minoru Fujii, P. K. Giri

  Abstract Surface-enhanced Raman spectroscopy (SERS), a very powerful tool for the identification of molecular species, has relied mostly on noble metal-based substrates to obtain a high enhancement factor. In this work, we demonstrate that self-driven intrinsic defects in 2D palladium di-selenide (PdSe₂) dendrites grown at low temperature (280 °C) act as hotspots for high SERS enhancement. We grow 2D dendritic PdSe₂ with ample intrinsic defects to exploit it for SERS application. X-ray electron spectroscopy (XPS) analysis reveals 9.3% outer layer and 4.7% interior Se vacancies. A detailed examination of atomic-scale defects revealed Se vacancy (V_Se) coupled with Se–Pd–Se vacancy (V_Se-Pd-Se) in monolayer PdSe₂, and an array of line defects (Se vacancies) and nanopores in bilayer PdSe₂ dendrites. Interestingly, our studies reveal that Se vacancy-rich PdSe₂ gives rise to line defects that act like hotspots for SERS enhancement. Remarkably, the vacancy-rich dendritic PdSe₂ shows a SERS enhancement factor >10⁵ and can detect RhB at a concentration down to 10⁻⁸ M. We speculate that the topological line defects and the edge construction in PdSe₂ dendrites act as metallic wire or edge, which is partly responsible for the high enhancement in the SERS signal. The high SERS sensitivity is explained on the basis of multiple charge transfer processes combined with the predicted metal-like behavior of the defected 2D PdSe₂. Our conclusions are fully supported by the density functional theory calculation of the electronic density of states of the defective bilayer (2L) PdSe₂, which remarkably exhibits metallic character. Being a defect-enabled SERS substrate, dendritic 2D PdSe₂ fills the gap between conventional plasmonic SERS substrate and plasmon-free SERS substrate.

  Springer Science and Business Media LLC, Feb. 2023, npj 2D Materials and Applications, 7(1) (1)

  Scientific journal


• Fluorophore‐Decorated Mie Resonant Silicon Nanosphere for Scattering/Fluorescence Dual‐Mode Imaging

  Masato Adachi, Hiroshi Sugimoto, Yuya Nishimura, Kenta Morita, Chiaki Ogino, Minoru Fujii

  Wiley, Jan. 2023, Small, 2207318 - 2207318

  Scientific journal


• Interfacial Charge Transfer Induced Enhanced Near-Infrared Photoluminescence and Enhanced Visible Photodetection in Two-Dimensional/Zero-Dimensional Bi2Se3/CsPbBr2I Heterojunctions with Type-I Band Alignment

  Sumana Paul, Joydip Ghosh, Md Tarik Hossain, Hiroaki Hasebe, Hiroshi Sugimoto, Minoru Fujii, Pravat K. Giri

  Oct. 2022, The Journal of Physical Chemistry C

  [Refereed]

  Scientific journal


• Size-Dependent Mutual Charge Transfer between B- and P-Codoped Si Quantum Dots and Monolayer MoS₂

  Yinggang Wang, Hiroshi Sugimoto, Minoru Fujii

  American Chemical Society ({ACS}), Sep. 2022, The Journal of Physical Chemistry C, 126(38) (38), 16401 - 16408, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Toroidal Dipole-Induced Photocurrent Enhancement in Si Nanodisk Hexagonal Array below the Band Gap

  Hiroaki Hasebe, Keisuke Moriasa, Kaito Yamashita, Hiroshi Sugimoto, Minoru Fujii

  American Chemical Society ({ACS}), Sep. 2022, ACS Photonics, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Mode Hybridization in Silicon Core–Gold Shell Nanosphere

  Hiroshi Sugimoto

  Sep. 2022, Small, 18(45) (45), 2204890 - 2204890, English

  Scientific journal


• Computational Discovery and Experimental Demonstration of Boron Phosphide Ultraviolet Nanoresonators

  Hiroshi Sugimoto

  Aug. 2022, Advanced Optical Materials, 10(16) (16), 2200422 - 2200422, English

  Scientific journal


• (Invited, Digital Presentation) Enhancement of Magnetic Dipole Transition of Molecules By Silicon Nanoparticle Nanoantenna

  Minoru Fujii, Hiroshi Sugimoto

  Jul. 2022, ECS Meeting Abstracts

  [Invited]

  Scientific journal


• Enhanced Light Emission from Monolayer MoS₂ by Doubly Resonant Spherical Si Nanoantennas

  Hiroto Shinomiya, Hiroshi Sugimoto, Tatsuki Hinamoto, Yan Joe Lee, Mark L. Brongersma, Minoru Fujii

  American Chemical Society ({ACS}), May 2022, ACS Photonics, 9(5) (5), 1741 - 1747, English

  Scientific journal


• Resonance Couplings in Si@MoS ₂ Core–Shell Architectures

  Tatsuki Hinamoto, Yea-Shine Lee, Sina Abedini Dereshgi, Jennifer G. DiStefano, Roberto dos Reis, Hiroshi Sugimoto, Koray Aydin, Minoru Fujii, Vinayak P. Dravid

  Wiley, Apr. 2022, Small, 18(17) (17), 2200413 - 2200413, English

  Scientific journal


• Silicon Nanosphere with Accessible Magnetic Hotspot

  Akira Matsumori, Hiroshi Sugimoto, Minoru Fujii

  Wiley, Apr. 2022, Advanced Optical Materials, 10(8) (8), 2102574 - 2102574, English

  Scientific journal


• Template‐Assisted Self‐Assembly of Colloidal Silicon Nanoparticles for All‐Dielectric Nanoantenna

  Hidemasa Negoro, Hiroshi Sugimoto, Tatsuki Hinamoto, Minoru Fujii

  Wiley, Apr. 2022, Advanced Optical Materials, 10(8) (8), 2102750 - 2102750, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Disentangling Cathodoluminescence Spectra in Nanophotonics: Particle Eigenmodes vs Transition Radiation

  Saskia Fiedler, P. Elli Stamatopoulou, Artyom Assadillayev, Christian Wolff, Hiroshi Sugimoto, Minoru Fujii, N. Asger Mortensen, S{\o}ren Raza, Christos Tserkezis

  American Chemical Society ({ACS}), Mar. 2022, Nano Letters, 22(6) (6), 2320 - 2327, English

  [Refereed]

  Scientific journal


• Solution-processed silicon quantum dot photocathode for hydrogen evolution

  Miho Takada, Kosuke Inoue, Hiroshi Sugimoto, Minoru Fujii

  The photoelectrochemical response of a photocathode made from a colloidal solution of boron (B) and phosphorus (P) codoped silicon (Si) quantum dots (QDs) 2-11 nm in diameters is studied. Since codoped Si QDs are dispersible in alcohol and water due to the hydrophilic surface, a photoelectrode with a smooth surface is produced by drop-coating the QD solution on an indium tin oxide substrate. The codoping provides high oxidation resistance to Si QDs and makes the electrode operate as a photocathode. The photoelectrochemical response of a Si QD photoelectrode depends strongly on the size of QDs; there is a transition from anodic to cathodic photocurrent around 4 nm in diameter. Below the size, anodic photocurrent due to self-oxidation of Si QDs is observed, while above the size, cathodic photocurrent due to electron transfer across the interface is observed. The cathodic photocurrent increases with increasing the size, and in some samples, it is observed for more than 3000 s under intermittent light irradiation.

  {IOP} Publishing, Nov. 2021, Nanotechnology, 32(48) (48), 485709 - 485709, English, International magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Colloidal Mie resonant silicon nanoparticles

  Hiroshi Sugimoto, Minoru Fujii

  {IOP} Publishing, Nov. 2021, Nanotechnology, 32(45) (45), 452001 - 452001

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Structure and Properties of Heavily B and P Codoped Amorphous Silicon Quantum Dots

  R. Turansk{\'{y } }, J. Brndiar, A. Pershin, {\'{A } }. Gali, H. Sugimoto, M. Fujii, I. {\v{S } }tich

  American Chemical Society ({ACS}), Oct. 2021, The Journal of Physical Chemistry C, 125(42) (42), 23267 - 23274, English

  Scientific journal


• Direct Excitation of Triplet State of Molecule by Enhanced Magnetic Field of Dielectric Metasurfaces

  Hiroshi Sugimoto, Hiroaki Hasebe, Taniyuki Furuyama, Minoru Fujii

  Wiley, Oct. 2021, Small, 17(47) (47), 2104458 - 2104458, English

  Scientific journal


• Thermal near-field tuning of silicon Mie nanoparticles

  Artyom Assadillayev, Tatsuki Hinamoto, Minoru Fujii, Hiroshi Sugimoto, S{\o}ren Raza

  Abstract Tunable high-refractive-index nanostructures are highly desired for realizing photonic devices with a compact footprint. By harnessing the large thermo-optic effect in silicon, we show reversible and wide thermal tuning of both the far- and near-fields of Mie resonances in isolated silicon nanospheres in the visible range. We perform in situ heating in a transmission electron microscope and electron energy-loss spectroscopy to show that the Mie resonances exhibit large spectral shifts upon heating. We leverage the spectral shifts to demonstrate near-field tuning between different Mie resonances. By combining electron energy-loss spectroscopy with energy-dispersive X-ray analysis, we show a reversible and stable operation of single silicon nanospheres up to a temperature of 1073 K. Our results demonstrate that thermal actuation offers dynamic near-field tuning of Mie resonances, which may open up applications in tunable nonlinear optics, Raman scattering, and light emission.

  Walter de Gruyter {GmbH}, Oct. 2021, Nanophotonics, English

  Scientific journal


• Colloidal solution of boron and phosphorus codoped silicon quantum dots -from material development to applications

  Minoru FUJII, Hiroshi Sugimoto, Shinya Kano

  Aug. 2021, Japanese Journal of Applied Physics, 61(SA) (SA), English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Plasmon Launching and Scattering by Silicon Nanoparticles

  Artyom Assadillayev, Tatsuki Hinamoto, Minoru Fujii, Hiroshi Sugimoto, Mark L. Brongersma, S{\o}ren Raza

  American Chemical Society ({ACS}), Jun. 2021, ACS Photonics, 8(6) (6), 1582 - 1591, English

  Scientific journal


• Magnetic Purcell Enhancement by Magnetic Quadrupole Resonance of Dielectric Nanosphere Antenna

  Hiroshi Sugimoto, Minoru Fujii

  American Chemical Society ({ACS}), Jun. 2021, ACS Photonics, 8(6) (6), 1794 - 1800, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Dual modulating luminescence in all-inorganic perovskite CsPbBr3 quantum dots

  Wanyin Ge, Jindou Shi, Meimei Xu, Yuanting Wu, Hiroshi Sugimoto, Minoru Fujii

  Elsevier {BV}, Mar. 2021, Optical Materials, 113, 110822 - 110822, English

  Scientific journal


• Colloidal Mie Resonators for All-Dielectric Metaoptics

  Sugimoto, Hiroshi, Fujii, Minoru

  Wiley, Feb. 2021, Advanced Photonics Research, n/a(n/a) (n/a), 2000111 - 2000111

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Angle-, Polarization-, and Wavelength-Resolved Light Scattering of Single Mie Resonators Using Fourier-Plane Spectroscopy

  Hinamoto, Tatsuki, Hamada, Mikihiko, Sugimoto, Hiroshi, Fujii, Minoru

  Wiley, Feb. 2021, Advanced Optical Materials, n/a(n/a) (n/a), 2002192 - 2002192

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Color Toning of Mie Resonant Silicon Nanoparticle Color Inks

  Okazaki, Takuma, Sugimoto, Hiroshi, Hinamoto, Tatsuki, Fujii, Minoru

  2021, ACS Applied Materials & Interfaces, 13(11) (11)

  Scientific journal


• Optimizing plasmon enhanced luminescence in silicon nanocrystals by gold nanorods

  Pavelka, Ondřej, Dyakov, Sergey, Veselý, Jozef, Fučíková, Anna, Sugimoto, Hiroshi, Fujii, Minoru, Valenta, Jan

  The Royal Society of Chemistry, 2021, Nanoscale, 13

  Scientific journal


• Stable near-infrared photoluminescence from silicon quantum dot–bovine serum albumin composites

  Asuka Inoue, Hiroshi Sugimoto, Yozo Sugimoto, Kensuke Akamatsu, Marie Hubalek Kalbacova, Chiaki Ogino, Minoru Fujii

  Cambridge University Press ({CUP}), Dec. 2020, MRS Communications, 10(4) (4), 680 - 686

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Visible-light driven photocatalytic hydrogen generation by water-soluble all-inorganic core-shell silicon quantum dots

  Hiroshi Sugimoto, Hao Zhou, Miho Takada, Junichiro Fushimi, Minoru Fujii

  Aug. 2020, JOURNAL OF MATERIALS CHEMISTRY A, 8(31) (31), 15789 - 15794, English

  [Refereed]

  Scientific journal


• Silicon Quantum Dot Supraparticles for Fluorescence Bioimaging

  Minoru Fujii, Riku Fujii, Miho Takada, Hiroshi Sugimoto

  American Chemical Society ({ACS}), Jun. 2020, ACS Applied Nano Materials, 3(6) (6), 6099 - 6107

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Triplex Glass Laminates with Silicon Quantum Dots for Luminescent Solar Concentrators

  Jing Huang, Jingjian Zhou, Tommy Haraldsson, Alden Clemments, Minoru Fujii, Hiroshi Sugimoto, Bo Xu, Ilya Sychugov

  Jun. 2020, SOLAR RRL, English

  [Refereed]

  Scientific journal


• Mie Resonator Color Inks of Monodispersed and Perfectly Spherical Crystalline Silicon Nanoparticles

  Hiroshi Sugimoto, Takuma Okazaki, Minoru Fujii

  Jun. 2020, ADVANCED OPTICAL MATERIALS, 8(12) (12), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• (Invited) Photoelectrochemical Properties of All-Inorganic Core/Shell Silicon Quantum Dots

  Minoru Fujii, Hiroshi Sugimoto

  The Electrochemical Society, May 2020, ECS Meeting Abstracts, {MA}2020-01(16) (16), 1061 - 1061

  [Refereed]

  Scientific journal


• Precise size separation of water-soluble red-to-near-infrared-luminescent silicon quantum dots by gel electrophoresis

  Minoru Fujii, Akiko Minami, Hiroshi Sugimoto

  Apr. 2020, NANOSCALE, 12(16) (16), 9266 - 9271, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 3D microstructure analysis of silicon-boron phosphide mixed nanocrystals

  Keita Nomoto, Hiroshi Sugimoto, Anna Ceguerra, Minoru Fujii, Simon P. Ringer

  Apr. 2020, NANOSCALE, 12(13) (13), 7256 - 7262, English

  [Refereed]

  Scientific journal


• Excitation of Nonradiating Anapoles in Dielectric Nanospheres

  John A. Parker, Hiroshi Sugimoto, Brighton Coe, Daniel Eggena, Minoru Fujii, Norbert F. Scherer, Stephen K. Gray, Uttam Manna

  Mar. 2020, PHYSICAL REVIEW LETTERS, 124(9) (9), English

  [Refereed]

  Scientific journal


• Quantitative Understanding of Charge-Transfer-Mediated Fe3+ Sensing and Fast Photoresponse by N-Doped Graphene Quantum Dots Decorated on Plasmonic Au Nanoparticles

  Hiroshi Sugimoto

  Jan. 2020, ACS Applied Materials & Interfaces, English

  [Refereed]

  Scientific journal


• Coupled Toroidal Dipole Modes in Silicon Nanodisk Metasurface: Polarization Independent Narrow Band Absorption and Directional Emission

  Hasebe, Hiroaki, Sugimoto, Hiroshi, Hinamoto, Tatsuki, Fujii, Minoru

  2020, Advanced Optical Materials, 8(22) (22), 2001148 - 2001148

  Scientific journal


• Colloidal Solutions of Silicon Nanospheres toward All-Dielectric Optical Metafluids

  Hinamoto, Tatsuki, Hotta, Shinnosuke, Sugimoto, Hiroshi, Fujii, Minoru

  2020, Nano Letters, 20(10) (10)

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Selective excitation and enhancement of multipolar resonances in dielectric nanospheres using cylindrical vector beams

  Uttam Manna, Hiroshi Sugimoto, Daniel Eggena, Brighton Coe, Ren Wang, Mahua Biswas, Minoru Fujii

  Jan. 2020, JOURNAL OF APPLIED PHYSICS, 127(3) (3), English

  [Refereed]

  Scientific journal


• Silicon Nanowire on Mirror Nanoantennas: Engineering Hybrid Gap Mode for Light Sources and Sensing Platforms

  Sugimoto, Hiroshi, Imaizumi, Ryosuke, Hinamoto, Tatsuki, Kawashima, Takahiro, Fujii, Minoru

  2020, ACS Applied Nano Materials, 3(7) (7), 7223 - 7230, English

  [Refereed]

  Scientific journal


• Gold nanopillar array with sharp surface plasmon resonances and the application in immunoassay

  Hiroto Yanagawa, Tatsuki Hinamoto, Takashi Kanno, Hiroshi Sugimoto, Masahiko Shioi, Minoru Fujii

  Dec. 2019, Journal of Applied Physics, 126(22) (22), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Absolute Scattering Cross Sections of Titanium Nitride Nanoparticles Determined by Single-Particle Spectroscopy: Implications for Plasmonic Nanoantennas

  Hiroshi Sugimoto

  Oct. 2019, ACS Applied Nano Materials, English

  [Refereed]

  Scientific journal


• Elongated Metal Nanocap with Two Magnetic Dipole Resonances and Its Application for Upconversion Enhancement

  Tatsuki Hinamoto, Tomoki Higashiura, Hiroshi Sugimoto, Minoru Fujii

  Oct. 2019, Journal of Physical Chemistry C, 123(42) (42), 25809 - 25815, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Evidence for plasmonic hot electron injection induced superior visible light photocatalysis by g-C3N4 nanosheets decorated with Ag–TiO2(B) and Au–TiO2(B) nanorods

  Hiroshi Sugimoto

  Oct. 2019, Solar Energy Materials and Solar Cells, English

  [Refereed]

  Scientific journal


• Forward to Backward Scattering Ratio of Dielectric–Metal Heterodimer Suspended in Almost Free‐Space

  Hiroshi Sugimoto

  Oct. 2019, Advanced Optical Materials, English

  [Refereed]

  Scientific journal


• Distribution of boron and phosphorus and roles of co-doping in colloidal silicon nanocrystals

  Hiroshi Sugimoto

  Oct. 2019, Acta Materialia, English

  [Refereed]

  Scientific journal


• Size-dependent photocatalytic activity of cubic boron phosphide nanocrystals in the quantum confinement regime

  Hiroshi Sugimoto, Bálint Somogyi, Toshiyuki Nakamura, Hao Zhou, Yuichi Ichihashi, Satoru Nishiyama, Adam Gali, Minoru Fujii

  Sep. 2019, Journal of Physical Chemistry C, 123(37) (37), 23226 - 23235, English

  [Refereed]

  Scientific journal


• Antibody-conjugated near-infrared luminescent silicon quantum dots for biosensing

  Hiroto Yanagawa, Asuka Inoue, Hiroshi Sugimoto, Masahiko Shioi, Minoru Fujii

  Sep. 2019, MRS Communications, 9(3) (3), 1079 - 1086, English

  [Refereed]

  Scientific journal


• Antibody-conjugated near-infrared luminescent silicon quantum dots for biosensing

  Hiroshi Sugimoto

  Abstract

  Sep. 2019, MRS Communications, English

  [Refereed]

  Scientific journal


• Charge Transfer-Induced Photobrightening of Silicon Quantum Dots in Water Containing a Molecular Reductant

  Kosuke Inoue, Takuya Kojima, Hiroshi Sugimoto, Minoru Fujii

  Jan. 2019, The Journal of Physical Chemistry C, 123(2) (2), 1512 - 1518, English

  [Refereed]

  Scientific journal


• Silver nanoparticles stabilized with a silicon nanocrystal shell and their antimicrobial activity

  Asuka Inoue, Hiroshi Sugimoto, Minoru Fujii

  The antimicrobial activity of a hybrid nanoparticle (NP) composed of a silver (Ag) NP core decorated with silicon (Si) nanocrystals (NCs) on the exterior (Ag/Si NPs) is evaluated.

  2019, RSC Advances, 9(27) (27), 15171 - 15176, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Donor-Acceptor Pair Recombination in Size-Purified Silicon Quantum Dots

  Hiroshi Sugimoto, Masataka Yamamura, Riku Fujii, Minoru Fujii

  American Chemical Society ({ACS}), Nov. 2018, Nano Letters, 18(11) (11), 7282 - 7288, English

  [Refereed]

  Scientific journal


• Resonant dielectric nanoparticles as efficient nanoantennas in optical regime

  Hiroshi Sugimoto, Minoru Fujii

  2018, Optics InfoBase Conference Papers, Part F125-JSAP 2018

  [Refereed]

  International conference proceedings


• Silicon quantum dots with heavily boron and phosphorus codoped shell

  Fujii, Minoru, Sugimoto, Hiroshi, Kano, Shinya

  2018, Chemical Communications, 54(35) (35)

  [Refereed]

  Scientific journal


• Size-Dependent Photocatalytic Activity of Colloidal Silicon Quantum Dot

  Kojima, Takuya, Sugimoto, Hiroshi, Fujii, Minoru

  2018, Journal of Physical Chemistry C, 122(3) (3), English

  [Refereed]

  Scientific journal


• Visualizing a core-shell structure of heavily doped silicon quantum dots by electron microscopy using an atomically thin support film

  Sugimoto, Hiroshi, Yamamura, Masataka, Sakiyama, Makoto, Fujii, Minoru

  2018, Nanoscale, 10(16) (16), English

  [Refereed]

  Scientific journal


• Broadband Dielectric-Metal Hybrid Nanoantenna: Silicon Nanoparticle on a Mirror

  Sugimoto, Hiroshi, Fujii, Minoru

  2018, Acs Photonics, 5(5) (5), English

  [Refereed]

  Scientific journal


• Assembling silicon quantum dots into wires, networks and rods via metal ion bridges

  Ohata, Yuki, Sugimoto, Hiroshi, Fujii, Minoru

  2018, Nanoscale, 10(16) (16), English

  [Refereed]

  Scientific journal


• Silicon Quantum Dots and Their Impact on Different Human Cells

  Belinova, Tereza, Vrabcova, Lucie, Machova, Iva, Fucikova, Anna, Valenta, Jan, Sugimoto, Hiroshi, Fujii, Minoru, Kalbacova, Marie Hubalek

  2018, Physica Status Solidi B-Basic Solid State Physics, 255(10) (10), 1 - 5, English

  [Refereed]

  Scientific journal


• Long-lived luminescence of colloidal silicon quantum dots for time-gated fluorescence imaging in the second near infrared window in biological tissue

  Sakiyama, Makoto, Sugimoto, Hiroshi, Fujii, Minoru

  2018, Nanoscale, 10(29) (29), 13902 - 139007, English

  [Refereed]

  Scientific journal


• Hybridized Plasmonic Gap Mode of Gold Nanorod on Mirror Nanoantenna for Spectrally Tailored Fluorescence Enhancement

  Sugimoto, Hiroshi, Yashima, Shiho, Fujii, Minoru

  2018, Acs Photonics, 5(8) (8), 3421 - 3427, English

  [Refereed]

  Scientific journal


• Metal-Core/Dielectric-Shell/Metal-Cap Composite Nanoparticle for Upconversion Enhancement

  Hinamoto, Tatsuki, Sugimoto, Hiroshi, Fujii, Minoru

  2018, Journal of Physical Chemistry C, 122(30) (30), 17465 - 17472, English

  [Refereed]

  Scientific journal


• Growth of Core-Shell Silicon Quantum Dots in Borophosphosilicate Glass Matrix: Raman and Transmission Electron Microscopic Studies

  Minami, Akiko, Sugimoto, Hiroshi, Crowe, Iain F., Fujii, Minoru

  2018, Journal of Physical Chemistry C, 122(36) (36), 21069 - 21075, English

  [Refereed]

  Scientific journal


• Donor-Acceptor Pair Recombination in Size-Purified Silicon Quantum Dots

  Sugimoto, Hiroshi, Yamamura, Masataka, Fujii, Riku, Fujii, Minoru

  2018, Nano Letters, 18(11) (11), 7282 - 7288, English

  [Refereed]

  Scientific journal


• Critical Size for Carrier Delocalization in Doped Silicon Nanocrystals: A Study by Ultrafast Spectroscopy

  Limpens, Rens, Sugimoto, Hiroshi, Neale, Nathan R., Fujii, Minoru

  2018, Acs Photonics, 5(10) (10), 4037 - 4045, English

  [Refereed]

  Scientific journal


• New insights into the red luminescent bovine serum albumin conjugated gold nanospecies

  Lin, Hui, Imakita, Kenji, Fujii, Minoru, Sun, Chang, Chen, Bingdi, Kanno, Takashi, Sugimoto, Hiroshi

  2017, Journal of Alloys and Compounds, 691, 860 - 865, English

  [Refereed]

  Scientific journal


• Technology and characterization of MIS structures with co-doped silicon nanocrystals (Si-NCs) embedded in hafnium oxide (HfOx) ultra-thin layers

  Mazurak, A., Mroczynski, R., Jasinski, J., Tanous, D., Majkusiak, B., Kano, S., Sugimoto, H., Fujii, M., Valenta, J.

  2017, Microelectronic Engineering, 178, English

  [Refereed]

  Scientific journal


• Size-dependent donor and acceptor states in codoped Si nanocrystals studied by scanning tunneling spectroscopy

  Ashkenazi, Or, Azulay, Doron, Balberg, Isaac, Kano, Shinya, Sugimoto, Hiroshi, Fujii, Minoru, Millo, Oded

  2017, Nanoscale, 9(45) (45), English

  [Refereed]

  Scientific journal


• Silicon Quantum Dots in Dielectric Scattering Media: Broadband Enhancement of Effective Absorption Cross Section by Light Trapping

  Sugimoto, Hiroshi, Ozaki, Yusuke, Fujii, Minoru

  2017, Acs Applied Materials & Interfaces, 9(22) (22), English

  [Refereed]

  Scientific journal


• Photoluminescence enhancement of silicon quantum dot monolayer by plasmonic substrate fabricated by nano-imprint lithography

  Yanagawa, Hiroto, Inoue, Asuka, Sugimoto, Hiroshi, Shioi, Masahiko, Fujii, Minoru

  2017, Journal of Applied Physics, 122(22) (22), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Photoluminescence Enhancement of Silicon Quantum Dot Monolayer by Double Resonance Plasmonic Substrate

  Inoue, Asuka, Sugimoto, Hiroshi, Fujii, Minoru

  2017, Journal of Physical Chemistry C, 121(21) (21), English

  [Refereed]

  Scientific journal


• Colloidal Dispersion of Subquarter Micrometer Silicon Spheres for Low-Loss Antenna in Visible Regime

  Sugimoto, Hiroshi, Fujii, Minoru

  2017, Advanced Optical Materials, 5(17) (17), English

  [Refereed]

  Scientific journal


• Charge-Transfer-Induced Photoluminescence Enhancement in Colloidal Silicon Quantum Dots

  Sugimoto, Hiroshi, Hori, Yusuke, Imura, Yusuke, Fujii, Minoru

  2017, Journal of Physical Chemistry C, 121(21) (21), English

  [Refereed]

  Scientific journal


• Controlling Surface Plasmon Resonance of Metal Nanocap for Upconversion Enhancement

  Hinamoto, Tatsuki, Takashina, Hiroyuki, Sugimoto, Hiroshi, Fujii, Minoru

  2017, Journal of Physical Chemistry C, 121(14) (14), 8077 - 8083, English

  [Refereed]

  Scientific journal


• Surface Plasmon Enhanced Emission Rate in Silicon Quantum Dot-Decorated Gold Nanorods in Solution

  Sugimoto Hiroshi, Fujii Minoru, Bjorn M.Reinhard, Luca Dal Negro

  神戸大学大学院工学研究科, May 2016, Memoirs of the Graduate Schools of Engineering and System Informatics Kobe University, 7, 17 - 20, English

  [Refereed]

  Research institution

  Link to Kobe Univ. Repository (Kernel)


• Surface Structure and Current Transport Property of Boron and Phosphorus Co-Doped Silicon Nanocrystals

  Sasaki, Masato, Kano, Shinya, Sugimoto, Hiroshi, Imakita, Kenji, Fujii, Minoru

  2016, Journal of Physical Chemistry C, 120(1) (1)

  [Refereed]

  Scientific journal


• Size-Dependence of Acceptor and Donor Levels of Boron and Phosphorus Codoped Colloidal Silicon Nanocrystals

  Hori, Yusuke, Kano, Shinya, Sugimoto, Hiroshi, Imakita, Kenji, Fujii, Minoru

  2016, Nano Letters, 16(4) (4)

  [Refereed]

  Scientific journal


• Doping efficiency and confinement of donors in embedded and free standing Si nanocrystals

  Almeida, A. J., Sugimoto, H., Fujii, M., Brandt, M. S., Stutzmann, M., Pereira, R. N.

  2016, Physical Review B, 93(11) (11)

  [Refereed]

  Scientific journal


• Atom probe tomography of phosphorus- and boron-doped silicon nanocrystals with various compositions of silicon rich oxide (vol 6, pg 287, 2016)

  Nomoto, Keita, Gutsch, Sebastian, Ceguerra, Anna V., Breen, Andrew, Sugimoto, Hiroshi, Fujii, Minoru, Perez-Wurfl, Ivan, Ringer, Simon P., Conibeer, Gavin

  2016, Mrs Communications, 6(4) (4), 469 - 469

  [Refereed]

  Scientific journal


• Silicon nanocrystal-noble metal hybrid nanoparticles

  Sugimoto, H., Fujii, M., Imakita, K.

  2016, Nanoscale, 8(21) (21), 10956 - 10962, English

  [Refereed]

  Scientific journal


• All-inorganic colloidal silicon nanocrystals-surface modification by boron and phosphorus co-doping

  Fujii, Minoru, Sugimoto, Hiroshi, Imakita, Kenji

  2016, Nanotechnology, 27(26) (26), English

  [Refereed]

  Scientific journal


• The impact of doped silicon quantum dots on human osteoblasts

  Ostrovska, Lucie, Broz, Antonin, Fucikova, Anna, Belinova, Tereza, Sugimoto, Hiroshi, Kanno, Takashi, Fujii, Minoru, Valenta, Jan, Kalbacova, Marie Hubalek

  2016, Rsc Advances, 6(68) (68), 63403 - 63413, English

  [Refereed]

  Scientific journal


• Probing Purcell enhancement in plasmonic nanoantennas by broadband luminescent Si quantum dots

  Sugimoto, Hiroshi, Yashima, Shiho, Furuta, Kenta, Inoue, Asuka, Fujii, Minoru

  2016, Applied Physics Letters, 108(24) (24), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• DNA assembly of silicon quantum dots/gold nanoparticle nanocomposites

  Inoue, Asuka, Sugimoto, Hiroshi, Yaku, Hidenobu, Fujii, Minoru

  2016, Rsc Advances, 6(68) (68), 63933 - 63939, English

  [Refereed]

  Scientific journal


• Atom Probe Tomography Analysis of Boron and/or Phosphorus Distribution in Doped Silicon Nanocrystals

  Nomoto, Keita, Sugimoto, Hiroshi, Breen, Andrew, Cezguerra, Anna V., Kanno, Takashi, Ringer, Simon P., Wurfl, Ivan Perez, Conibeer, Gavin, Fujii, Minoru

  2016, Journal of Physical Chemistry C, 120(31) (31), English

  [Refereed]

  Scientific journal


• Atom probe tomography of phosphorus- and boron-doped silicon nanocrystals with various compositions of silicon rich oxide

  Nomoto, Keita, Gutsch, Sebastian, Ceguerra, Anna V., Breen, Andrew, Sugimoto, Hiroshi, Fujii, Minoru, Perez-Wurfl, Ivan, Ringer, Simon P., Conibeer, Gavin

  2016, MRS Communications, 6(3) (3), English

  [Refereed]

  Scientific journal


• Water-dispersible near-infrared luminescent silicon nanocrystals -immobilization on substrate

  Kanno, Takashi, Kano, Shinya, Sugimoto, Hiroshi, Tada, Yasuhiro, Fujii, Minoru

  2016, Mrs Communications, 6(4) (4), English

  [Refereed]

  Scientific journal


• Single-dot spectroscopy of boron and phosphorus codoped silicon quantum dots

  Kanno, Takashi, Sugimoto, Hiroshi, Fucikova, Anna, Valenta, Jan, Fujii, Minoru

  2016, Journal of Applied Physics, 120(16) (16), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Controlling Energy Transfer in Silicon Quantum Dot Assemblies Made from All-Inorganic Colloidal Silicon Quantum Dots

  Sugimoto, Hiroshi, Furuta, Kenta, Fujii, Minoru

  2016, Journal of Physical Chemistry C, 120(42) (42), 24469 - 24475, English

  [Refereed]

  Scientific journal


• Fluorescence Enhancement and Spectral Shaping of Silicon Quantum Dot Monolayer by Plasmonic Gap Resonances

  Yashima, Shiho, Sugimoto, Hiroshi, Takashina, Hiroyuki, Fujii, Minoru

  2016, Journal of Physical Chemistry C, 120(50) (50), 28795 - 28801, English

  [Refereed]

  Scientific journal


• Surface Plasmon-Enhanced Luminescence of Silicon Quantum Dots in Gold Nanoparticle Composites

  Inoue, Asuka, Fujii, Minoru, Sugimoto, Hiroshi, Imakita, Kenji

  2015, Journal of Physical Chemistry C, 119(44) (44)

  [Refereed]

  Scientific journal


• Size-controlled growth of cubic boron phosphide nanocrystals

  Sugimoto, Hiroshi, Fujii, Minoru, Imakita, Kenji

  2015, Rsc Advances, 5(11) (11)

  [Refereed]

  Scientific journal


• Size and dopant-concentration dependence of photoluminescence properties of ion-implanted phosphorus- and boron-codoped Si nanocrystals

  Nakamura, Toshihiro, Adachi, Sadao, Fujii, Minoru, Sugimoto, Hiroshi, Miura, Kenta, Yamamoto, Shunya

  2015, Physical Review B, 91(16) (16)

  [Refereed]

  Scientific journal


• Plasmon-Enhanced Emission Rate of Silicon Nanocrystals in Gold Nanorod Composites

  Sugimoto, Hiroshi, Chen, Tianhong, Wang, Ren, Fujii, Minoru, Reinhard, Bjoern M., Dal Negro, Luca

  2015, Acs Photonics, 2(9) (9)

  [Refereed]

  Scientific journal


• Growth of novel boron-rich nanocrystals from oxygen-deficient borophosphosilicate glasses for boron neutron capture therapy

  Sugimoto, H., Imakita, K., Fujii, M.

  2015, Rsc Advances, 5(119) (119)

  [Refereed]

  Scientific journal


• Enhanced photoluminescence of Si nanocrystals-doped cellulose nanofibers by plasmonic light scattering

  Sugimoto, Hiroshi, Zhang, Ran, Reinhard, Bjoern M., Fujii, Minoru, Perotto, Giovanni, Marelli, Benedetto, Omenetto, Fiorenzo G., Dal Negro, Luca

  2015, Applied Physics Letters, 107(4) (4)

  [Refereed]

  Scientific journal


• Energy Transfer in Silicon Nanocrystal Solids Made from All-Inorganic Colloidal Silicon Nanocrystals

  Furuta, Kenta, Fujii, Minoru, Sugimoto, Hiroshi, Imakita, Kenji

  2015, Journal of Physical Chemistry Letters, 6(14) (14)

  [Refereed]

  Scientific journal


• Broadband enhancement of local density of states using silicon-compatible hyperbolic metamaterials

  Wang, Yu, Sugimoto, Hiroshi, Inampudi, Sandeep, Capretti, Antonio, Fujii, Minoru, Dal Negro, Luca

  2015, Applied Physics Letters, 106(24) (24)

  [Refereed]

  Scientific journal


• Synthesis of boron and phosphorus codoped all-inorganic colloidal silicon nanocrystals from hydrogen silsesquioxane

  Sugimoto, Hiroshi, Fujii, Minoru, Imakita, Kenji

  2014, Nanoscale, 6(21) (21)

  [Refereed]

  Scientific journal


• Silicon nanocrystals with high boron and phosphorus concentration hydrophilic shell-Raman scattering and X-ray photoelectron spectroscopic studies

  Fujii, Minoru, Sugimoto, Hiroshi, Hasegawa, Masataka, Imakita, Kenji

  2014, Journal of Applied Physics, 115(8) (8)

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Colloidal hydrophilic silicon germanium alloy nanocrystals with a high boron and phosphorus concentration shell

  Kanno, Takashi, Fujii, Minoru, Sugimoto, Hiroshi, Imakita, Kenji

  2014, Journal of Materials Chemistry C, 2(28) (28)

  [Refereed]

  Scientific journal


• All-inorganic water-dispersible silicon quantum dots: highly efficient near-infrared luminescence in a wide pH range

  Sugimoto, Hiroshi, Fujii, Minoru, Fukuda, Yuki, Imakita, Kenji, Akamatsu, Kensuke

  2014, Nanoscale, 6(1) (1)

  [Refereed]

  Scientific journal


• Phosphorus and Boron Codoped Colloidal Silicon Nanocrystals with Inorganic Atomic Ligands

  Apr. 2013, The Journal of Physical Chemistry C, English

  [Refereed]

  Scientific journal


• Phosphorus and boron codoped colloidal silicon nanocrystals with inorganic atomic ligands

  Hiroshi Sugimoto, Minoru Fujii, Kenji Imakita, Shinji Hayashi, Kensuke Akamatsu

  Apr. 2013, Journal of Physical Chemistry C, 117(13) (13), 6807 - 6813, English

  [Refereed]

  Scientific journal


• Codoping n- and p-Type Impurities in Colloidal Silicon Nanocrystals: Controlling Luminescence Energy from below Bulk Band Gap to Visible Range

  Sugimoto, H., Fujii, M., Imakita, K., Hayashi, S., Akamatsu, K.

  2013, Journal of Physical Chemistry C, 117(22) (22)

  [Refereed]

  Scientific journal


• All-inorganic near-infrared luminescent colloidal silicon nanocrystals: High dispersibility in polar liquid by phosphorus and boron codoping

  Hiroshi Sugimoto, Minoru Fujii, Kenji Imakita, Shinji Hayashi, Kensuke Akamatsu

  Aug. 2012, Journal of Physical Chemistry C, 116(33) (33), 17969 - 17974, English

  [Refereed]

  Scientific journal


• All-Inorganic Near-Infrared Luminescent Colloidal Silicon Nanocrystals: High Dispersibility in Polar Liquid by Phosphorus and Boron Codoping

  Aug. 2012, The Journal of Physical Chemistry C, English

  [Refereed]

  Scientific journal


• Surfactant-free solution-dispersible Si nanocrystals surface modification by impurity control

  Masatoshi Fukuda, Minoru Fujii, Hiroshi Sugimoto, Kenji Imakita, Shinji Hayashi

  Oct. 2011, Optics Letters, 36(20) (20), 4026 - 4028, English

  [Refereed]

  Scientific journal


• Surfactant-free solution-dispersible Si nanocrystals surface modification by impurity control

  Oct. 2011, Optics Letters, English

  [Refereed]

  Scientific journal


• Acceptor-related low-energy photoluminescence from boron-doped Si nanocrystals

  Hiroshi Sugimoto, Minoru Fujii, Masatoshi Fukuda, Kenji Imakita, Shinji Hayashi

  Sep. 2011, Journal of Applied Physics, 110(6) (6), 063528, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Acceptor-related low-energy photoluminescence from boron-doped Si nanocrystals

  Sep. 2011, Journal of Applied Physics, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)

• 誘電体ナノアンテナのMie共鳴によるスピン反転を伴う遷移の増強

  杉本 泰, 藤井 稔

  Lead, Oct. 2021, 理論化学会誌 フロンティア, (12) (12)

  [Refereed][Invited]


• Mie共鳴により発色するシリコンナノ粒子の構造色インクへの応用

  杉本 泰, 藤井 稔

  Lead, Jul. 2021, 塗装工学

  [Invited]


• Structural Color Inks Composed of Mie-Resonant Silicon Nanoparticles

  Hiroshi SUGIMOTO, Takuma OKAZAKI, Minoru FUJII

  Lead, Japan Society of Colour Material, 20 Apr. 2021, Journal of the Japan Society of Colour Material, 94(4) (4), 96 - 99

  [Refereed][Invited]

  Introduction scientific journal


• Mie共鳴により発色するナノ粒子カラーインクの創製

  杉本 泰

  Lead, Feb. 2021, 月間OPTRONICS

  [Invited]


• Mie共鳴により発色するナノ粒子インク

  杉本 泰, 藤井 稔

  Lead, Jan. 2020, コンバーテック

  [Invited]


• All-inorganic water-dispersible silicon quantum dots

  Fujii Minoru, Sugimoto Hiroshi, Kano Shinya

  Jul. 2016, SPIE Newsroom, English

  [Refereed]

  Report scientific journal


• Si nanocrystals dispersible in polar liquids without functionalization by organic molecules

  藤井 稔, 杉本 泰, 今北 健二, 林 真至

  大阪大学超高圧電子顕微鏡センター, 2012, 大阪大学超高圧電子顕微鏡センター年報, (41) (41), 22 - 24, Japanese

• 量子ドット・マイクロLEDディスプレイと関連材料の技術開発 (Technical Development of Quantum-dot・Micro LED Display and their Material)

  SUGIMOTO Hiroshi, FUJII Minoru

  Others, ㈱シーエムシー･リサーチ, Mar. 2018, Japanese

  Scholarly book


• Silicon Nanomaterials Sourcebook, Low-Dimensional Structures Nanopowders, Nanowires

  SUGIMOTO Hiroshi, FUJII Minoru

  Others, CRC Press, Aug. 2017, English

  Scholarly book


• 量子ドット材料の技術と応用展開

  SUGIMOTO Hiroshi, FUJII Minoru

  Others, 情報機構, Jun. 2017, Japanese

  Scholarly book


• Micro- and Nanophotonic Technologies

  Patrick Meyrueis, Kazuaki Sakoda, Marcel Van de Voorde, SUGIMOTO HIROSHI, FUJII MINORU

  Joint work, Wiley, Mar. 2017, English, ISBN: 9783527340378

  Scholarly book

• Experimental Demonstration of Magnetic Purcell Enhancement by Magnetic Resonance of Silicon Nanospheres

  Hiroshi Sugimoto, Minoru Fujii

  2021 Materials Research Society, Fall Meeting, Dec. 2021


• Spherical Silicon Nanoparticle Color Inks Enabled by Mie Resonances

  Hiroshi Sugimoto, Takuma Okazaki, Minoru Fujii

  第67回応用物理学会春季学術講演会, Mar. 2020, Japanese, TOKYO, Japan, Domestic conference

  Oral presentation


• Colloidal Solution of Silicon Nanospheres for All Dielectric Metafluid

  Tatsuki Hinamoto, Shinnosuke Hotta, Hiroshi Sugimoto, Minoru Fujii

  第67回応用物理学会春季学術講演会, Mar. 2020, Japanese, TOKYO, Japan, Domestic conference

  Oral presentation


• Hydrogen evolution by silicon quantum dot photocatalyst

  Miho Takada, Hiroshi Sugimoto, Minoru Fujii

  第67回応用物理学会春季学術講演会, Mar. 2020, Japanese, TOKYO, Japan, Domestic conference

  Oral presentation


• Mie 共鳴により発色するシリコンナノ粒子インク

  Takuma Okazaki, Hiroshi Sugimoto, Minoru Fujii

  2019年 神戸大学研究基盤センター「若手フロンティア研究会2019」, Dec. 2019, Japanese, KOBE, Japan, Domestic conference

  Poster presentation


• シリコン量子ドット光触媒による水素生成

  Miho Takada, Hao Zhou, Hiroshi Sugimoto, Minoru Fujii

  2019年 神戸大学研究基盤センター「若手フロンティア研究会2019」, Dec. 2019, Japanese, KOBE, Japan, Domestic conference

  Poster presentation


• シリコン量子ドットの電気泳動

  Akiko Minami, Hiroshi Sugimoto, Minoru Fujii

  2019年 神戸大学研究基盤センター「若手フロンティア研究会2019」, Dec. 2019, Japanese, KOBE, Japan, Domestic conference

  Poster presentation


• 高屈折率誘電体ナノディスクアレイの光学応答制御

  Hiroaki Hasebe, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  2019年 神戸大学研究基盤センター「若手フロンティア研究会2019」, Dec. 2019, Japanese, KOBE, Japan, Domestic conference

  Poster presentation


• 高屈折率誘電体ナノワイヤの光学特性

  Ryosuke Imaizumi, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  2019年 神戸大学研究基盤センター「若手フロンティア研究会2019」, Dec. 2019, Japanese, KOBE, Japan, Domestic conference

  Poster presentation


• Dielectric Meta-atoms Exhibiting Optical Magnetism

  Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  第30回 光物性研究会, 2019, Japanese, KYOTO, Japan, Domestic conference

  Poster presentation


• Controlling Emission of WS2 Monolayer with a Spherical Silicon Mie Resonator

  Tatsuki Hinamoto, Yan Joe Lee, Soren Laza, Hiroshi Sugimoto, Minoru Fujii, Mark Brongersma

  MRS Fall Meeting & Exhibit, 2019, English, BOSTON, United States, International conference, Co-authored internationally

  Oral presentation


• Engineering directional scattering of Mie resonator

  Tatsuki Hinamoto, Mikihiko Hamada, Hiroshi Sugimoto, Minoru Fujii

  The International Symposium on Plasmonics and Nano-photonics (iSPN2019), 2019, English, KOBE, Japan, International conference

  Poster presentation


• Colloidal Silicon Nanoresonators for All-Dielectric Photonics

  Hiroshi Sugimoto, Tatsuki Hinamoto, Minoru Fujii

  The International Symposium on Plasmonics and Nano-photonics (iSPN2019), 2019, English, KOBE, Japan, International conference

  Poster presentation


• Resonant Silicon Nanoparticles as Efficient Optical Nanoantennas

  Hiroshi Sugimoto, Minoru Fujii

  IUMRS-ICA 2019, 20th International Union of Materials Research Societies Conference, 2019, English, PERTH, Australia, International conference

  Oral presentation


• Directional optical nanoantenna by an interference between Mie resonance of high-refractive-index dielectric nanosphere and LSPR of metal nanocap

  Mikihiko Hamada, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Oral presentation


• Silicon Nanoparticle Ink Showing Color by Mie Resonance

  Takuma Okazaki, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Oral presentation


• Controlling Emission of WS2 Monolayer with a Spherical Silicon Mie Resonator

  Tatsuki Hinamoto, Yan Joe Lee, Soren Laza, Hiroshi Sugimoto, Minoru Fujii, Mark Brongersma

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference, Co-authored internationally

  Oral presentation


• Cyclic Voltammetry of Silicon Quantum Dots

  Kosuke Inoue, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Oral presentation


• Electrophoresis of Silicon Quantum Dots

  Akiko Minami, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Oral presentation


• Hydrogen Evolution by Silicon Quantum Dot Photocatalyst

  Hao Zhou, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Oral presentation


• Colloidal Silicon Nanoparticles for Photonic Color Inks

  Hiroshi Sugimoto, Takuma Okazaki, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Oral presentation


• Fabrication of high-index dielectric nanodisk arrays and their optical responses (I)

  Hiroaki Hasebe, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Poster presentation


• Hydrogen evolution by silicon quantum dot photocatalyst

  Miho Takada, Hao Zhou, Hiroshi Sugimoto, Minoru Fujii

  第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, HOKKAIDO, Japan, Domestic conference

  Poster presentation


• All-Inorganic Colloidal Silicon Quantum Dots Codoped with Boron and Phosphorus

  Hiroshi Sugimoto

  European Materials Research Society 2019 Spring Meeting, May 2019, English, NICE, France, International conference

  [Invited]

  Oral presentation


• Size Dependent Donor and Acceptor Pair Recombination in Colloidal Silicon Quantum Dots

  Hiroshi Sugimoto, Minoru Fujii

  MRS Spring Meeting & Exhibit, 2019, English, PHOENIX, United States, International conference

  Oral presentation


• Hybridized Plasmonic Gap Mode in Gold Nanorod on Mirror Nanoantenna for Spectrally Tailored Emission Enhancement

  Hiroshi Sugimoto, Minoru Fujii

  MRS Spring Meeting & Exhibit, 2019, English, PHOENIX, United States, International conference

  Oral presentation


• Luminescence property of boron and phosphorus co-doped silicon quantum dots

  Minoru Fujii, Hiroshi Sugimoto

  The 7th International Conference on Light-Emitting Devices and Their Industrial Applications (LEDIA2019) in Optics & Photonics International Congress 2019, 2019, English, KANAGAWA, Japan, International conference

  [Invited]

  Oral presentation


• 不純物をドープした単分散シリコン量子ドットの発光特性（II）

  Hiroshi Sugimoto, FUJII Riku, Minoru Fujii

  第66回応用物理学会春季学術講演会, 2019, Japanese, Domestic conference

  Oral presentation


• 金属基板上の高屈折率誘電体ナノワイヤの光学特性(II)

  Ryousuke Imaizumi, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  第66回応用物理学会春季学術講演会, 2019, Japanese, Domestic conference

  Oral presentation


• シリコン量子ドット-タンパク質間相互作用によるプロテインコロナ形成

  Asuka Inoue, Youzou Sugimoto, Hiroshi Sugimoto, Minoru Fujii

  第66回応用物理学会春季学術講演会, 2019, Japanese, Domestic conference

  Oral presentation


• シリコン量子ドットsupraparticleの開発

  Riku Fujii, Miho Takada, Hiroshi Sugimoto, Minoru Fujii

  第66回応用物理学会春季学術講演会, 2019, Japanese, Domestic conference

  Oral presentation


• 単分散シリコン量子ドットの開発と発光特性

  Riku Fujii, Masataka Yamamura, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Oral presentation


• 単一窒化チタンナノ粒子の光散乱特性評価

  Youichi Ikuno, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Poster presentation


• 水分散性シリコン量子ドットの光誘起電荷移動

  Kousuke Inoue, Takuya Kojima, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Oral presentation


• 水分散性シリコン量子ドットの近赤外時間ゲートバイオイメージング応用に関する研究

  Asuka Inoue, Hiroshi Sugimoto, Makoto Sakiyama, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Poster presentation


• 高屈折率誘電体球のMie共鳴と金属ナノキャップのLSPRの干渉に基づく指向性光ナノアンテナ

  Mikihiko Hamada, Tatsuki Hinamoto, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Oral presentation


• 高屈折率誘電体ナノワイヤの光学特性(I)

  Ryousuke Imaizumi, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Poster presentation


• 広範囲にサイズ制御したコロイドシリコンナノ粒子の光学特性

  SUGIMOTO Hiroshi, FUJII Minoru

  2018年 第66回応用物理学会春季学術講演会, 2018, Japanese, Domestic conference

  Invited oral presentation


• 金属イオンによるシリコン量子ドット薄膜の量子ドット間架橋

  Yusuke Imura, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Poster presentation


• 可視応答型光触媒を指向したBoron Phosphideナノ結晶の開発（I）

  Toshiyuki Nakamura, Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Oral presentation


• ホウ素とリンを同時ドープしたシリコン量子ドットの成長機構

  MINAMI Akiko, SUGIMOTO Hiroshi, FUJII Minoru

  2018年 第67回応用物理学会春季学術講演会, 2018, Japanese, Domestic conference

  Oral presentation


• シリコンナノ結晶シェルを有する高安定性銀ナノ粒子の抗菌作用に関する研究

  Asuka Inoue, Hiroshi Sugimoto, BYUNGJI Kim, Michael J. Sailor, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, Japanese, Domestic conference

  Oral presentation


• Visualizing core-shell structure of heavily doped silicon quantum dots by electron microscope using atomically thin support film

  Hiroshi Sugimoto, Makoto Sakiyama, Minoru Fujii

  19th International Microscopy Congress (IMC19), 2018, English, International conference

  Poster presentation


• Silicon Nanocrystal Shell Hybrid Nanoparticle as Antimicrobial Agent

  Asuka inoue, Hiroshi Sugimoto, Byungji Kim, Michael J. Sailor, Minoru Fujii

  2018 MRS Fall Meeting, 2018, English, International conference

  Poster presentation


• Resonant Dielectric Nanoparticles as Efficient Nanoantennas in Optical Regime

  Hiroshi Sugimoto, Minoru Fujii

  2018年 第79回応用物理学会秋季術講演会, 2018, English, Domestic conference

  Oral presentation


• Microstructure of boron and phosphorus co-doped colloidal silicon nanocrystals

  Keita Nomoto, Hiroshi Sugimoto, Xiang Yuan Cui, Anna Ceguerra, Minoru Fujii, Simon Ringer

  19th International Microscopy Congress (IMC19), 2018, English, International conference

  Oral presentation


• Donor and Acceptor Codoping in Silicon Quantum Dots for Efficient and Tunable Near IR Emission

  Hiroshi Sugimoto, Minoru Fujii

  2018 MRS Spring Meeting & Exhibit, 2018, English, International conference

  Oral presentation


• Colloidal Silicon Nanoantenna for Low-Loss Dielectric Nanophotonics Platform

  Hiroshi Sugimoto, Minoru Fujii

  2018 MRS Spring Meeting & Exhibit, 2018, English, International conference

  Oral presentation


• All-Inorganic Water-Dispersible Silicon Quantum Dots

  Minoru Fujii, Hiroshi Sugimoto, Shinya Kano

  233rd ECS Meeting, 2018, English, International conference

  [Invited]

  Invited oral presentation


• 不純物ドープシリコン量子ドットの単一ドット分光

  Kanno Takashi, Sugimoto Hiroshi, Anna Fucikova, Jan Valenta, Fujii Minoru

  2017年第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, 横浜市, Domestic conference

  Oral presentation


• 不純物ドーピングによるシリコン量子ドットの輻射再結合レート増大(Ⅰ)

  Yamamura Masataka, Sugimoto Hiroshi, Fujii Minoru

  2017年第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, 横浜市, Domestic conference

  Oral presentation


• 水分散性シリコン量子ドットベース光触媒材料の開発（Ⅰ）

  Kojima Takuya, Nakamura Toshiyuki, Sugimoto Hiroshi, Fujii Minoru

  2017年第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, 横浜市, Domestic conference

  Oral presentation


• 金属イオンを用いた凝集制御によるシリコン量子ドット高次元構造の形成

  Ohata Yuki, Sugimoto Hiroshi, Inoue Asuka, Fujii Minoru

  2017年第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, 横浜市, Domestic conference

  Poster presentation


• Metal Film Over Nanosphere構造におけるシリコン量子ドット単層膜の吸収断面積および発光再結合レートの同時増強

  Inoue Asuka, Sugimoto Hiroshi, Fujii Minoru

  2017年第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, 横浜市, Domestic conference

  Oral presentation


• Atom Probe Tomographyによる不純物ドープシリコンナノ結晶の構造評価

  Sugimoto Hiroshi, Nomoto Keita, Simon P.Ringer, Gavin Conibeer, Fujii Minoru

  2017年第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, 横浜市, Domestic conference

  Oral presentation


• 生体の第二光学窓領域に発光を示す水分散性シリコン量子ドット

  SAKIYAMA Makoto, SUGIMOTO Hiroshi, FUJII Minoru

  2017年 第78回応用物理学会秋季学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• 金属イオンを用いたシリコン量子ドット高次構造の形成

  OHATA Yuki, SUGIMOTO Hiroshi, FUJII Minoru

  2017年 第78回応用物理学会秋季学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• シリコン量子ドットの形状制御による基板上への配列制御

  YAMAMURA Masataka, SUGIMOTO Hiroshi, FUJII Minoru

  2017年 第78回応用物理学会秋季学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• コロイド状シリコン球の作製と誘電体ナノアンテナへの応用

  SUGIMOTO Hiroshi, FUJII Minoru

  2017年 第78回応用物理学会秋季学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• コロイド状シリコンナノ粒子の広範囲サイズ制御とその光学特性

  SUGIMOTO Hiroshi, FUJII Minoru

  2017年 第78回応用物理学会秋季学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• Surface Plasmon Enhanced Photoluminescence from Silicon Quantum Dots Monolayer

  INOUE Asuka, SUGIMOTO Hiroshi, FUJII Minoru

  European Materials Research Society Spring Meeting and Exhibit, 2017, English, International conference

  Oral presentation


• Size-Dependent Energy Level Structures in Donor and Acceptor Codoped Silicon Quantum Dots

  SUGIMOTO Hiroshi, HORI Yusuke, KANO Shinya, FUJII Minoru

  18th International Conference on Physics of Light-Matter Coupling in Nanostructures, 2017, English, International conference

  Poster presentation


• Silicon Quantum Dots and their Impact on Different Cell Types

  T. Belinova, L. Vrabcova, A. Fucikova, J. Valenta, Hiroshi Sugimoto, Minoru Fujii, M. H. Kalbacova

  2017 European Materials Research Society Fall Meeting and Exhibit, 2017, English, International conference

  Oral presentation


• Silicon Nanocrystals in Highly Scattering Media -Broadband Enhancement of Effective Absorption Cross Section

  SUGIMOTO Hiroshi, OZAKI Yusuke, FUJII Minoru

  2017 European Materials Research Society Fall Meeting and Exhibit, 2017, English, International conference

  Oral presentation


• Metal Nano Particle on Mirror構造におけるシリコン量子ドットの発光制御特性(III)

  YASHIMA Shiho, SUGIMOTO Hiroshi, FUJII Minoru

  2017年 第78回応用物理学会秋季学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• Formation of Laminated Films of Silicon Quantum Dot Monolayers from the Colloidal Solution

  FUJII Minoru, SUGIMOTO Hiroshi, FURUTA Kenta

  European Materials Research Society Spring Meeting and Exhibit, 2017, English, International conference

  Oral presentation


• Colloidal Si Nanospheres with Diameters Raging from 1 to 250 nm –Photoluminescence and Mie Resonances

  SUGIMOTO Hiroshi, FUJII Minoru

  2017 European Materials Research Society Fall Meeting and Exhibit, 2017, English, International conference

  Oral presentation


• 有機色素脱色によるシリコン量子ドットの光触媒活性の評価

  Kojima Takuya, Sugimoto Hiroshi, Takashina Hiroyuki, Fujii Minoru

  神戸大学研究基盤センター「若手フロンティア研究会2016」, Dec. 2016, Japanese, 神戸市, Domestic conference

  Poster presentation


• 金属ナノ構造/シリコン量子ドット複合体の発光特性評価

  Inoue Asuka, Sugimoto Hiroshi, Fujii Minoru

  神戸大学研究基盤センター「若手フロンティア研究会2016」, Dec. 2016, Japanese, 神戸市, Domestic conference

  Poster presentation


• 化学ドーピングによるシリコンナノ結晶コロイドの光学特性制御

  Hori Yusuke, Sugimoto Hiroshi, Fujii Minoru

  神戸大学研究基盤センター「若手フロンティア研究会2016」, Dec. 2016, Japanese, 神戸市, Domestic conference

  Poster presentation


• MNPoM構造におけるSi量子ドットの発光特性制御

  Yashima Shiho, Sugimoto Hiroshi, Takashina Hiroyuki, Fujii Minoru

  神戸大学研究基盤センター「若手フロンティア研究会2016」, Dec. 2016, Japanese, 神戸市, Domestic conference

  Poster presentation


• Control of Light Emission from Silicon Quantum Dots Coupled to Plasmonic Nanoantennas

  Sugimoto Hiroshi, Yashima Shiho, Fujii Minoru

  2016 MRS Fall Meeting & Exhibit, Nov. 2016, English, Boston,USA, International conference

  Oral presentation


• Speccific Binding of Codoped Silicon Nanocrystal on Self-Assembled Monolayer

  Kano Shinya, Kanno Takashi, Tada Yasuhiro, Higashikawa Yasuhiro, Sugimoto Hiroshi, Fujii Minoru

  International Conference on Self-Assembly in Confined Spaces, Oct. 2016, English, San Sebastian,Spain, International conference

  Poster presentation


• 化学ドーピングによるシリコンナノ結晶コロイドの光学特性制御

  Hori Yusuke, Sugimoto Hiroshi, Fujii Minoru

  第77回応用物理学会秋季学術講演会, Sep. 2016, Japanese, 新潟市, Domestic conference

  Oral presentation


• シランカップリング反応によるシリコン量子ドットの表面修飾

  Inoue Asuka, Sugimoto Hiroshi, Fujii Minoru

  第77回応用物理学会秋季学術講演会, Sep. 2016, Japanese, 新潟市, Domestic conference

  Oral presentation


• Film - coupled nanoparticle 構造におけるシリコンナノ結晶の発光特性(Ⅱ)

  Yashima Shiho, Sugimoto Hiroshi, Takashina Hiroyuki, Fujii Minoru

  第77回応用物理学会秋季学術講演会, Sep. 2016, Japanese, 新潟市, Domestic conference

  Oral presentation


• Synthesis of silicon-noble metal hybrid nanoparticle

  Sugimoto Hiroshi, Imakita Kenji, Fujii Minoru

  European Materials Research Society, 2016 Spring Meeting, May 2016, English, Lille,France, International conference

  Public symposium


• Size-dependence of HOMO, LUMO and Fermi levels of B and P codoped Si nanocrystals

  Fujii Minoru, Hori Yusuke, Kano Shinya, Sugimoto Hiroshi, Imakita Kenji

  European Materials Research Society, 2016 Spring Meeting, May 2016, English, Lille,France, International conference

  Public symposium


• Organic Functionalization of near-infrared luminescent silicon nanocrystals

  Kanno Takashi, Kano Shinya, Sugimoto Hiroshi, Tada Yasuhiro, Imakita Kenji, Fujii Minoru

  European Materials Research Society, 2016 Spring Meeting, May 2016, English, Lille,France, International conference

  Public symposium


• Application of fluorescent co-doped silicon nanocrystals in cell biology

  Lucie Ostrovsk, Kanno Takashi, Sugimoto Hiroshi, Antonin Broz, Jan Valenta, Anna Fucikova, Fujii Minoru, Marie Hubalek Kalbacova

  European Materials Research Society, 2016 Spring Meeting, May 2016, English, Lille,France, International conference

  Public symposium


• Surface Plasmon Enhanced Absorption Cross-Section of Silicon Quantum Dots in Gold Nanoparticle Composites

  Inoue Asuka, Sugimoto Hiroshi, Imakita Kenji, Fujii Minoru

  2016 MRS Spring Meeting & Exhibit, Apr. 2016, English, Phoenix,USA, International conference

  Poster presentation


• Silicon nanocrystal-based metal-semiconductor hybrid nanoparticles

  Sugimoto Hiroshi, Ren Wang, Luca Dal Negro, Bjorn M.Reinhard, Fujii Minoru

  2016 MRS Spring Meeting & Exhibit, Apr. 2016, English, Phoenix,USA, International conference

  Public symposium


• Confinement of Donors and Doping Efficiency in Embedded and Freestanding Silicon Nanocrystals

  Antonio J.Almeida, Sugimoto Hiroshi, Fujii Minoru, Martin S.Brandt, Martin Stutzmann, Rui N.Pereira

  2016 MRS Spring Meeting & Exhibit, Apr. 2016, English, Phoenix,USA, International conference

  Public symposium

• 光化学協会

  Jul. 2020 - Present


• 応用物理学会

  Mar. 2012 - Present

• 誘電体ナノ粒子からなる非対称光導波路を用いたエナンチオ選択的分離手法の開発

  杉本 泰, KARIMI HABIL MOJTABA

  日本学術振興会, 科学研究費助成事業, 特別研究員奨励費, 神戸大学, 01 Oct. 2024 - 31 Mar. 2027


• 光磁場を増強するナノアンテナの開発と機能創出

  杉本 泰

  日本学術振興会, 科学研究費助成事業, 基盤研究(B), 神戸大学, 01 Apr. 2024 - 31 Mar. 2027


• ナノ粒子を用いた新規構造色インク・塗料の開発及び事業化推進

  杉本 泰

  科学技術振興機構, 産学が連携した研究開発成果の展開 大学発新産業創出基金事業 ディープテック・スタートアップ国際展開プログラム(D-Global), 神戸大学, Dec. 2024 - Mar. 2027, Principal investigator

  構造発色ナノ粒子の技術を活用して、「軽い・薄い・強い」を実現する革新的な構造色インク・塗料を開発し、量産技術の確立と事業開発を進めることで、グローバルで戦えるマテリアルスタートアップの設立を目指す。


• 誘電体ナノアンテナの増強キラル近接場による不斉光反応場の創成

  科学技術振興機構(JST), 創発的研究支援事業 フェーズ１, 神戸大学, Apr. 2023 - Mar. 2026, Principal investigator


• ケイ素ナノ粒子を用いた構造色カラーインク

  新エネルギー・産業技術総合開発機構(NEDO), 官民による若手研究者発掘支援事業, マッチングサポートフェーズ, Sep. 2025


• トロイダル双極子共鳴のデバイス応用に向けたメタサーフェスプラットホームの構築

  藤井 稔, 杉本 泰

  日本学術振興会, 科学研究費助成事業 基盤研究(B), 基盤研究(B), 神戸大学, 01 Apr. 2021 - 31 Mar. 2025

  シリコン薄膜上にアスペクト比が小さいシリコンナノディスクのHexagonal arrayを配列した構造について、シミュレーションにより光学特性の解析を行った．その結果，消光係数が非常に小さい領域においてトロイダル双極子共鳴（アナポール状態）による非常に狭帯域な吸収が発現することを見出した．また，共鳴波長において入射電場がナノディスクの下のシリコン薄膜の領域に強く閉じ込められることを明らかにした．さらに，シリコン薄膜の厚さにより共鳴波長を非常に広範囲に制御可能である事を示した．構造パラメーターと共鳴モードの関係を明らかにすることにより，目的の波長で高い吸収増強度と高Q値を同時に実現する構造の探索を行いそのガイドラインを得た．次に，シミュレーションにより決定したナノディスクアレー構造を大面積に形成する技術の開発を行った．シリカ基板上にスパッタリング法によりシリコン薄膜を形成した後，その上に形成したポリスチレン球のhexagonal arrayをマスクとしてシリコン薄膜をエッチングした．エッチング時間を制御することにより，シリコン薄膜上にシリコンナノディスクアレーを配列したmonolithic型構造を実現した．作製した構造の透過スペクトルと反射スペクトルから吸収スペクトルを得，シミュレーション結果との比較を行った．その結果，目的とする構造が得られていることが明らかになった．作製したデバイスの光電流スペクトルを測定したところ，シリコンのバンドギャップよりも長波長の領域においてアナポール状態による狭帯域な光電流ピークが観測された．


• シリコンナノ粒子のＭｉｅ共鳴を用いたマルチカラーイムノクロマトセンサ

  科学技術振興機構(JST), 大学発新産業創出基金事業, 可能性検証, Oct. 2023 - Sep. 2024


• Development of biophotonics and photochemical applications of silicon quantum dots in collaboration with a consortium established for the formation of "Silicon Nanomaterials Center" founded by US NSF

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Kobe University, 09 Oct. 2018 - 31 Mar. 2024


• 完全吸収シリコンメタサーフェスを利用した電流検出型バイオセンサの開発

  村田学術振興財団, 研究助成, Jul. 2023, Principal investigator


• Mie共鳴により発色するナノ粒子インク色材の創製と応用開発

  杉本 泰

  日本学術振興会, 科学研究費助成事業 若手研究, 若手研究, 神戸大学, 01 Apr. 2021 - 31 Mar. 2023

  本研究では、高屈折率誘電体ナノ粒子のMie共鳴を用いたインク色材の開発を目標としている。「塗る」ことで鮮やかに発色可能なインク色材開発に向けた材料・設計手法などの基盤技術を確立し、外部から能動的な色彩制御を目指す。本年度は、以下の研究を実施した。 (i) 可視域でMie共鳴を示すシリコンナノ粒子の散乱特性制御、分散安定性、および光安定性の向上を目的として、Stober法によりシリカシェルを形成する技術を開発した。10-30 nmで精密に膜厚を制御してコーティングする技術を開発した。これにより、水やアルコール中での長期間安定性と、発色の光安定性の向上が期待できる。さらに、Metal-assisted etching法を応用し、シリコンナノ粒子にナノ細孔を形成することで、実効的な屈折率の制御と、それによる散乱スぺクトル変化を理論・実験の両面から明らかにし、散乱スペクトル制御の新しい方法を提案した。 (ii) シリコンナノ粒子の多量体構造は粒子間での電場・磁場増強や散乱指向性、導波モードの形成など興味深い特性を示す。そのため、多量体化により色相制御範囲を拡大できる可能性がある。従来のトップダウンプロセスではなく、ボトムアッププロセスで溶液に分散したシリコンナノ粒子をナノパターン上に集積し、多量体を形成する技術を開発した。ナノパターン上に移流集積法を用いてナノ粒子を配置し、形成された多量体構造の光学特性をFDTDシミュレーションと顕微分光測定により調査し、粒子間の相互作用が光学特性に与える影響を明らかにした。 以上に加えて、コロイドシリコンナノ粒子の形成方法と光学特性、応用機能について総括したReview Paperを発表した。


• Photochemical reaction platform enabled by Mie resonances

  Japan Science and Technology Agency, JST-PRESTO, Kobe Univesity, Oct. 2019 - Mar. 2023, Principal investigator


• Carrier control and matrix engineering of silicon quantum dot thin film

  Fujii Minoru

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Challenging Research (Exploratory), Kobe University, 28 Jun. 2019 - 31 Mar. 2022

  The ultimate goal of this research is to realize high-performance optoelectronic devices from silicon quantum dots by a coating or printing process of the colloidal solution. To achieve this, we have been working on the chemical doping by molecule adsorption, the formation of a composite structure with two-dimensional transition metal dichalcogenides, the improvement of conductivity between quantum dots by adding platinum nanoparticles or graphene nanoparticles to the thin film, and the development of a composite film composed of silicon quantum dots and lead halide perovskite. Through these researches, we obtained guidelines for improving the property of silicon quantum dot thin films, and showed for the first time that a thin film produced by coating silicon quantum dots works as a photoelectrode for hydrogen generation.


• Development of high-contrast bio imaging platform using nano crystalline silicon quantum dots

  Japan Society for the Promotion of Science, Bilateral Programs, Kobe University, Apr. 2020 - Mar. 2022, Principal investigator


• Hybrid Doping in Quantum Dot-Based Functional Nanomaterials

  SUGIMOTO Hiroshi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists, Grant-in-Aid for Early-Career Scientists, Kobe University, 01 Apr. 2018 - 31 Mar. 2021

  This project aims at the further exploration of the optical functionality of semiconductor quantum dots by developing a hybrid approach of substitutional doping and chemical doping. By performing detail structural and optical studies on boron and phosphorus codoped silicon quantum dots developed by our group, the effect of substitutional doping on the excess carriers inside quantum dots and energy level structure are investigated. In addition, the chemical doping is successfully demonstrated using molecular reductant and the photocatalytic reaction that cannot be achieved by solely substitutional doping, is demonstrated.


• 可視光による水の光分解反応を指向したボロンフォスファイドナノ結晶の開発

  関西エネルギー・リサイクル科学研究振興財団, 試験研究助成, 神戸大学, Apr. 2019 - Mar. 2020, Principal investigator


• Mie共鳴により発色する新規顔料ナノ粒子インクの創製

  公益財団法人ホソカワ粉体工学振興財団, 研究助成金, 神戸大学, Apr. 2019 - Mar. 2020, Principal investigator


• ナノ界面制御による機能性量子ドット-２次元層状物質複合材料の創製

  公益財団法人 ひょうご科学技術協会, 学術研究助成事業, 神戸大学, Apr. 2018 - Mar. 2019, Principal investigator


• コロイド状シリコン粒子を用いた光メタ表面デバイスの開発

  カシオ科学振興財団, 研究助成, 神戸大学, Apr. 2018 - Mar. 2019, Principal investigator


• 可視応答型シリコン微小球の作製と表面増強蛍光への応用

  公益財団法人 泉科学技術振興財団, 研究助成, 神戸大学, Oct. 2017 - Sep. 2018, Principal investigator


• ｎ型、ｐ型不純物同時ドープコロイド状シリコンナノ結晶の開発と基礎物性解明

  杉本 泰

  日本学術振興会, 科学研究費助成事業 特別研究員奨励費, 特別研究員奨励費, 神戸大学, 25 Apr. 2014 - 31 Mar. 2017

  本年度は、シリコンナノ結晶コロイドの基礎物性解明及び大面積電子デバイス・バイオフォトニクス応用を念頭に研究を行った。不純物ドープシリコンナノ結晶の基礎物性解明の一環として、(i) ３次元アトムプローブトモグラフィー法による原子スケールでの不純物分布の解明、(ii) 単一シリコンナノ結晶の発光特性解明に関する研究を行った。さらに、バイオ応用を見据えて、(iii) 生体分子を用いたシリコンナノ結晶-プラズモニックナノ粒子複合体形成、(iv) シリコンナノ結晶を用いたバイオイメージング応用実証に関する研究を行った。 (i) に関して、ニューサウスウェールズ大学・シドニー大学と共同で３次元アトムプローブによるシリコンナノ結晶内部の不純物分布を明らかにし、その粒径依存性や不純物の偏析状態を評価した。(ii) について、顕微分光法を用いて単一の不純物ドープシリコンナノ結晶の発光特性を評価した。これらの研究により、不純物ドープシリコンナノ結晶の構造及び発光起源が不純物をドープしていないナノ結晶と大きく異なることを明らかにした。 (iii) に関して、シリコンナノ結晶表面をアミノ基、チオール基で修飾し、DNAはハイブリダイゼーションにより金ナノ粒子と結合した。複合体は3-4倍の発光強度を示した。(iv)に関して、シリコンナノ結晶と骨芽細胞を24-48時間培養し、その毒性評価・発光特性評価を行った。シリコンナノ結晶は非常に毒性が低く、細胞内で長時間安定して近赤外発光を示すことを明らかにした。