Tokushima University / Educator and Researcher Directory --- Sugano, Satoshi

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Tokushima University ⟩ Technical Support Department ⟩ 常三島技術部門 ⟩ 分析グループ ⟩

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Research

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Academic Paper (Judged Full Paper):

1.	Akihiro Takamatsu, Masatsugu Oishi, Shimpei Gohda, Hiroki Takemura, Konosuke Mitsushio, Satoshi Sugano, Takashi Yamamoto, Toshiaki Ina, Haruo Kishimoto and Takaaki Sakai : Characteristics of Ag-doped LaMnO₃ perovskite oxide and its application as a solid oxide fuel cell cathode, Materials Advances, 2024. (Link to Publication Site) ● Publication site (DOI): 10.1039/D4MA00190G (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1039/D4MA00190G (DOI: 10.1039/D4MA00190G)
2.	Masaki Murase, Yuki Matsuoka, Satoshi Sugano, Tetsuro Katayama and Akihiro Furube : Enhancement of Visible Light Response of TiO2 Photocatalyst by 3D-Deposited Ag Nanowires and Its Charge Separation Mechanism, The Journal of Chemical Physics, Vol.161, 014701, 2024. (Summary) In 3D-deposited AgNW/TiO2, which is prepared by spray-applying titanium dioxide suspension to deposited silver nanowire sheets, the synergistic effects of increased crossing points of AgNWs to enhance localized surface plasmon resonance excitation and longer-lived electrons in the conduction band of TiO2 generated by plasmon-induced charge transfer have successfully resulted in photocatalytic activity in the visible light range. We have developed photocatalytic sheets in which TiO2 particles are uniformly attached to 3D-deposited AgNWs. Regarding the prepared sheet, it was confirmed that TiO2 was indeed well adhered to the AgNWs, and electron transfer was efficient at the interface. This sheet solves the problem that the response wavelength range of the photocatalytic reaction using TiO2 is only in the ultraviolet region and exhibits sufficient photocatalytic effect in the visible light region. Transient absorption spectroscopy measurements in the diffuse reflectance configuration confirmed that the electrons of AgNWs actually move into the conduction band of TiO2 under visible light and that the interaction is independent of the excitation light intensity, thereby extending the lifetime of the electrons. (Link to Publication Site) ● Publication site (DOI): 10.1063/5.0205194 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 38949283 ● Summary page in Scopus @ Elsevier: 2-s2.0-85197310664 (DOI: 10.1063/5.0205194, PubMed: 38949283, Elsevier: Scopus)
3.	Paul Niloy, Sawate Akash, Satoshi Sugano, Tetsuro Katayama, Masatsugu Oishi, Akihiro Furube and Pankaj Koinkar : Development of silver nanocubes created by pulsed laser ablation in liquid, International Journal of Modern Physics B, Vol.38, No.12&13, 2440014, 2024. (Link to Publication Site) ● Publication site (DOI): 10.1142/S0217979224400149 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1142/S0217979224400149 (DOI: 10.1142/S0217979224400149)
4.	Yuki Osaka, Satoshi Sugano and Shuichi Hashimoto : Plasmonic-heating-induced nanofabrication on glass substrates, Nanoscale, Vol.8, No.42, 18187-18196, 2016. (Summary) Fabricating nano-sized through-holes on a coverslip approximately 100 μm thick is challenging but rewarding when applied to ultrafine filters that separate proteins and DNA of various sizes and isolate viruses from cells. Toward this end, we developed an in situ etching-assisted laser processing technique exploiting gold nanoparticles. Plasmonic heating of a single gold nanoparticle through focused illumination of a continuous-wave laser beam enables structural modifications to be localized to the contact area on the glass surface. This results in the embedding of the particle forming nanocavities caused by chemical etching with aqueous tetrabutylammonium hydroxide. Depending on the shape of the nanoparticle, a highly flexible face geometry design such as a disk and triangle was achieved. The etching was monitored in situ through measurements of spectral red shifts in single-particle scattering, indicating an increasing medium refractive index consistent with embedding. The embedding process is unexpectedly fast, at 0.8 μm with 5 minutes of illumination. Besides nanoholes, we fabricated nanodomes around a single gold nanoparticle supported on a glass substrate through laser-heating-induced encapsulation. Overall, we were able to demonstrate true nano-laser processing free from diffraction-limited optics, with potential benefits of simple low-cost fabrication. (Tokushima University Institutional Repository) ● Metadata: 113997 (Link to Publication Site) ● Publication site (DOI): 10.1039/C6NR06543K (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1039/C6NR06543K (Tokushima University Institutional Repository: 113997, DOI: 10.1039/C6NR06543K)
5.	Masaki Fujikawa, Yuta Higashi, Yutaro Nomura, Tomoyuki Ueki, Satoshi Sugano, Kei-ichiro Murai, Toshihiro Moriga and Masashi Mori : Identification of Second Phases for Sr_1-xLa_xTiO₃ Perovskites Synthesized by Citric-Gel Method, ECS Transactions, Vol.57, No.1, 2331-2337, 2013. (Link to Publication Site) ● Publication site (DOI): 10.1149/05701.2331ecst (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1149/05701.2331ecst (DOI: 10.1149/05701.2331ecst)

Academic Letter:

1.	Tatsuki Sogabe, 酒井孝明, 廣井慧, 尾原幸治, Satoshi Sugano, Shih Shao-Ju, Toshihiro Moriga and Masatsugu Oishi : Photoluminescence Property of Nano Silica Mixed YAG:Ce Phosphors, The 3rd International Conference on Nanomaterials and Advanced CompositesProceedings of NAC 2022,Springer Proceedings in Physics, Vol.28, No.chapter 7, 57-65, 2023. (Link to Publication Site) ● Publication site (DOI): 10.1007/978-981-99-7153-4_7 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85178517761 (DOI: 10.1007/978-981-99-7153-4_7, Elsevier: Scopus)

Proceeding of International Conference:

1.	SIDDHANT DHONGADE, Pankaj Koinkar, Satoshi Sugano and Akihiro Furube : Liquid Exfoliation of Graphene Oxide Nanoribbons using Chemical Assisted Laser Ablation, PHENMA 2020, Kitakyushu, Mar. 2021. (Link to Publication Site) ● Publication site (DOI): 10.1142/S0217979221400099 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85106195072 (DOI: 10.1142/S0217979221400099, Elsevier: Scopus)
2.	Yuki Osaka, Satoshi Sugano, Toshihiro Okamoto, Shuichi Hashimoto and Masanobu Haraguchi : Fabrication of nano through-hole in glass substrate using LSP excited by CW laser irradiation, The 12th Asia-Pacific Conference on Near-field Optics(APNFO12), 廈門市, Jul. 2019.
3.	Yuki Osaka, Satoshi Sugano and Shuichi Hashimoto : Laser-induced fabrication of nanoholes on glass substrates exploiting gold nanoparticles, LPM 2017 Programs and Technical Digest, 94, Toyama, Jun. 2017.
4.	Hitoshi Takagi, Antonio Norio Nakagaito, Satoshi Sugano, Yuya Muneta and Jitendra Kumar Pandey : Performance of biocomposites reinforced by cellulose nanofiber obtained from paper wastes, Proceedings of the International Symposium on Green Manufacturing and Applications (ISGMA 2014), 40-43, Busan, Jun. 2014. (Keyword) Cellulose / Extraction / Biocomposites / Green composites / Nanofiber / Inorganic compound
5.	Masaki Fujikawa, Y. Higashi, Y. Nomura, Tomoyuki Ueki, Satoshi Sugano, Kei-ichiro Murai, Toshihiro Moriga and Masashi Mori : Identification of Second Phases for Sr_1-xLa_xTiO₃ Perovskites Synthesized by Citric-Gel Method, 13th International Symposium on Solid Oxide Fuel Cells (SOFC-XIII), Okinawa, Oct. 2013.

Proceeding of Domestic Conference:

1.	Soma Fujiwara, Kohei Kasai, Yuki Mimoto, Satoshi Sugano, Yasuo Minami, Retsuo Kawakami and Shin-ichiro Yanagiya : 金/酸化チタンナノバレット構造の作製と光特性評価, 2021年度応用物理・物理系学会合同学術講演会, Gp-5, Jul. 2021.
2.	Yuki Osaka, Satoshi Sugano, Shuichi Hashimoto and Masanobu Haraguchi : プラズモン加熱を用いたガラス表面へのナノ孔作製と観察方法の開拓, 2018年光化学討論会, Sep. 2018.
3.	Yuki Osaka, Satoshi Sugano and Shuichi Hashimoto : ガラスのCWレーザー加工における金ナノ粒子の利用, レーザー学会第513回研究会「新レーザー技術」, Dec. 2017.
4.	Yuki Osaka, Satoshi Sugano and Shuichi Hashimoto : プラズモン加熱を用いたガラスへのナノホールの作製, 2017光化学討論会講演要旨集, Sep. 2017.
5.	Yuki Osaka, Satoshi Sugano and Shuichi Hashimoto : Nanopore fabrication on glass substrates using laser-gold nanoparticle interaction, 2016年光化学討論会講演要旨集, Sep. 2016. (Summary) Nanoscale fabrication in transparent materials has been a subject of intensive study in laser processing field. Here we demonstrate the nanohole fabrication utilizing laser heating of gold nanoparticles combined with simultaneous etching with concentrated alkaline solutions. 100-nm spherical gold nanoparticles supported on a borosilicate glass substrate were submerged in alkaline solution such as KOH and exposed to a 488-nm CW laser illumination. The scattering spectral changes were observed with time lapse. SEM images and AFM height profiles revealed the formation of nanoholes with diameters similar to those of gold nanoparticles. The depth profiles were measured using the optical slice images of a confocal microscopy and SEM cross-sectional images. These data will be presented on site.
6.	Takuro Tomita, 尾崎信彦, Satoshi Sugano, 江山剛史, 高吉翔大, Ken Morita and Toshiro Isu : GaAs/AlGaAs多重量子井戸におけるフェムト秒レーザーアブレーション, 2012年秋季第73回応用物理学会学術講演会, No.12p-PA4-6, Sep. 2012.

Et cetera, Workshop:

1.	Yuki Osaka, Satoshi Sugano, Toshihiro Okamoto, Shuichi Hashimoto and Masanobu Haraguchi : プラズモン加熱によるガラスのCWレーザー加工, 第16回プラズモニクスシンポジウム, Jun. 2019.