Development of phosphor-assisted cathodoluminescence scanning electron microscopy

• Project/Area Number: 16K13821
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Osaka University
• Principal Investigator: ASHIDA Masaaki 大阪大学, 基礎工学研究科, 教授 (60240818)
• Co-Investigator(Kenkyū-buntansha): 田中 秀和 大阪大学, 産業科学研究所, 教授 (80294130)
• Co-Investigator(Renkei-kenkyūsha): HATTORI Azusa 大阪大学, 産業科学研究所, 助教 (80464238) ; ICHIMIYA Masayoshi 滋賀県立大学, 工学部, 准教授 (00397621)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: カソードルミネッセンス / 走査電子顕微鏡 / 相転移 / エネルギー移動 / 電子顕微鏡 / 強相関エレクトロニクス / マイクロ・ナノデバイス / 表面・界面物性 / 光物性

Outline of Final Research Achievements

A novel method, which we call "phosphor-assisted cathodoluminescence scanning electron microscopy", was developed to observe the distribution of the electrical conductivity of materials with multi-scale resolution from tens of nanometers to millimeters. Here we utilized the interaction between the phosphor and the surface of the material to be measured, which affects the cathodoluminescence spectra from the phosphor. The mechanism and the spatial resolution of this method were examined using well-defined micro-size specimen and some dyes. Finally, we applied this method to observe the domain structures of strongly correlated oxides in their metal-insulator transition.

Research Products

• [Journal Article] Quantitative study of energy-transfer mechanism in Eu,O-codoped GaN by time-resolved photoluminescence spectroscopy (2018)
  • Author(s): Inaba Tomohiro、Kojima Takanori、Yamashita Genki、Matsubara Eiichi、Mitchell Brandon、Miyagawa Reina、Eryu Osamu、Tatebayashi Jun、Ashida Masaaki、Fujiwara Yasufumi
  • Journal Title: Journal of Applied Physics Volume: 123 Issue: 16 Pages: 161419-161419
  • DOI: 10.1063/1.5011283
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] In situ tuning of whispering gallery modes of levitated silica microspheres (2017)
  • Author(s): Minowa Yosuke、Toyota Yusuke、Ashida Masaaki
  • Journal Title: Journal of the Optical Society of America B Volume: 34 Issue: 6 Pages: C20-C20
  • DOI: 10.1364/josab.34.000c20
  • Peer Reviewed / Open Access
• [Journal Article] Inner structure of ZnO microspheres fabricated via laser ablation in superfluid helium (2017)
  • Author(s): Minowa Yosuke、Oguni Yuya、Ashida Masaaki
  • Journal Title: Optics Express Volume: 25 Issue: 9 Pages: 10449-10449
  • DOI: 10.1364/oe.25.010449
  • Peer Reviewed / Open Access
• [Journal Article] Correlative near-infrared light and cathodoluminescence microscopy using Y2O3:Ln, Yb (Ln = Tm, Er) nanophosphors for multi-scale, multi-colour bioimaging (2016)
  • Author(s): Fukushima, S., Furukawa, T., Niioka, H., Ichimiya, M., Sannomiya, T., Tanaka, N., Onoshima, D., Yukawa, H., Baba, Y., Miyake, J., Ashida, M., Araki, T., and Hashimoto, M.
  • Journal Title: Scientific Reports Volume: 6 Issue: 1 Pages: 25950-25950
  • DOI: 10.1038/srep25950
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Effects of c/a Anisotropy and Local Crystal Structure on Superconductivity in AFe2(As1-xPx)2 (A = Ba1-ySry, Sr1-yCay and Eu) (2016)
  • Author(s): Toru Adachi, Yusuke Nakamatsu, Tatsuya Kobayashi, Shigeki Miyasaka, Setsuko Tajima, Masayoshi Ichimiya, Masaaki Ashida, Hajime Sagayama, Hironori Nakao, Reiji Kumai, and Youichi Murakami
  • Journal Title: Journal of the Physical Society of Japan Volume: 85 Issue: 6 Pages: 063705-063705
  • DOI: 10.7566/jpsj.85.063705
  • NAID: 210000133952
  • Peer Reviewed
• [Presentation] Optical and magnetic sorting of nanoparticles in cryogenic conditions (2018)
  • Author(s): M. Ashida, Y. Minowa, M. Kumakura, Y. Moriwaki
  • Organizer: SPIE Photonics West 2018
  • Int'l Joint Research
• [Presentation] 界面エネルギー移動を利用したナノ領域電子物性の新奇光プローブ法 (2017)
  • Author(s): 服部 梓、一宮 正義、芦田 昌明、田中 秀和
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜（神奈川県 横浜市）
  • Year and Date: 2017-03-13
• [Presentation] Optical fabrication and trapping of microspheres in cryogenic conditions (2017)
  • Author(s): M. Ashida, Y. Minowa, M. Kumakura, Y. Moriwaki
  • Organizer: Optics & Photonics Japan (OPJ)
  • Int'l Joint Research
• [Presentation] 半導体マイクロ微小球の内部構造と光学特性の評価 (2017)
  • Author(s): 建本晃宏, 小國友也, 蓑輪陽介, 芦田昌明
  • Organizer: 日本物理学会 2017年秋季大会
• [Presentation] THz時間領域分光による強相関マンガン酸化物ナノ電子相の伝導特性評価 (2017)
  • Author(s): 服部梓、T. V. A. Nguyen、永井正也、芦田昌明、田中秀和
  • Organizer: 第78回応用物理学会秋季学術講演会
  • Invited
• [Presentation] Optical fabrication and trapping of superconducting nanoparticles in superfluid helium (2017)
  • Author(s): M. Ashida, Y. Minowa, M. Kumakura, Y. Moriwaki
  • Organizer: SPIE Nanoscience + Engineering 2017
  • Int'l Joint Research
• [Presentation] Fabrication of Superconducting Micro Particles by Laser Ablation in Superfluid Helium (2017)
  • Author(s): M. Ashida, Y. Minowa, M. Kumakura, Y. Takahashi, F. Matsushima, Y. Moriwaki
  • Organizer: CLEO 2017
  • Int'l Joint Research
• [Presentation] Fabrication of semiconductor microspheres with laser ablation in superfluid helium (2017)
  • Author(s): Y. Minowa, Y. Oguni, M. Ashida
  • Organizer: The 4th Optical Manipulation Conference (OMC'17)
  • Int'l Joint Research
• [Presentation] Investigation of nanodomain properties in the phase-separated manganite by probing electron dynamics (2016)
  • Author(s): A. N. Hattori, T. V. A. Ngyuen, M. Nagai, M. Ichimiya, M. Ashida and H. Tanaka
  • Organizer: Low-Energy Electrodynamics in Solids (LEES 2016)
  • Place of Presentation: Hotel LAFORET Biwako (Moriyama, Shiga)
  • Year and Date: 2016-05-29
  • Int'l Joint Research