In-situ analysis of microfluidics using synchrotron radiation

• Project/Area Number: 26600032
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Oyanagi Hiroyuki 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 協力研究員 (00344432)
• Co-Investigator(Kenkyū-buntansha): Hiroaki Nitani 高エネルギー加速器科学研究機構, 物質構造科学研究所, 助教 (20554603) ; 山下 健一 国立研究開発法人産業技術総合研究所, その他部局等, 研究員 (90358250)
• Co-Investigator(Renkei-kenkyūsha): Kenichi Yamashita 産業科学技術総合研究所, その他部局等, 研究員 (90358250)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: マイクロリアクター / マイクロビーム / XANES / EXAFS / DFT / 電荷クラスター / 放射線効果 / フルポテンシャル多重散乱理論 / 蛍光X線検出 / クラスタ / モノマー / アミド / ピクセル検出器 / ナノクラスタ / 放射線還元 / 脱プロトン / 後期遷移金属

Outline of Final Research Achievements

LabView software for transfer fluorescence intensity data from 100-pixel Ge array detector to an experimental PC of the semi-microbeam x-ray station BL15A of PF was implemented, which allows the data acquisition of microfluidic cell with a 25 micron spot. The software is compact and user friendly with a GUI.
During an experiment at NE1 wiggler station of AR for optimizing chemical reactions, a new type of charged nanoclusters are formed by irradiation. Full potential multiple scattering theory and DFT analyszng x-ray absorption spectra XANES, EXAFS) found that Cu13 clusters with Ih symmetry are formed by deprotonation which stabilizes charged clusters by donating electrons. The observation of such neutralized charge clusters is new and has an impact as an unusual radiation-induced cluster formation for late transition metal.

Research Products

• [Int'l Joint Research] INFN Laboratori Nazionali di Frascati(Italy)
• [Int'l Joint Research] Institut de Physique de Rennes(France)
• [Int'l Joint Research] Chinese Academy of Science(China)
• [Journal Article] Nanoclusters Synthesized by Synchrotron Radiolysis in Concert with Wet Chemistry (2014)
  • Author(s): Hiroyuki Oyanagi, Yuuichi Orimoto, Kuniko Hayakawa, Keisuke Hatada, Zhihu Sun, Ling Zhang, Kenichi Yamashita, Hiroyuki Nakamura, Masato Uehara, Atsuyuki Fukano, and Hideaki Maeda
  • Journal Title: Scientific Reports Volume: 4 Issue: 1 Pages: 7199-7199
  • DOI: 10.1038/srep07199
  • Peer Reviewed / Open Access
• [Presentation] SR X-ray and Solar Hydrogen Research-Toward In-Situ Operand XAFS@NSRL (2015)
  • Author(s): Hiroyuki
  • Organizer: University of Science and Technology of China Seminar
  • Place of Presentation: University of Science and Technology of China, Hefei（R.P. China）
  • Year and Date: 2015-11-18
  • Invited
• [Presentation] Toward Sustainable SR-XAFS Research-Impact of Medium Energy Rings (2015)
  • Author(s): Hiroyuki Oyanagi
  • Organizer: National Synchrotron Radiation Laboratory User's Meeting 2015
  • Place of Presentation: Hefei（R.P. China）
  • Year and Date: 2015-08-12
  • Invited
• [Presentation] Synchrotron Radiolysis Synthesizes Novel Nanoclusters (2015)
  • Author(s): Hiroyuki Oyanagi
  • Organizer: 74th Okazaki Conference: Frontier of X-ray Absorption Spectroscopy and Molecular Science
  • Place of Presentation: Okazaki Conference Center (OCC)
  • Year and Date: 2015-02-03 – 2015-02-05
  • Invited
• [Remarks] エックス線と化学反応の同時利用で従来よりも小さなナノ粒子を合成
  • URL: http://www.aist.go.jp/aist_j/new_research/2015/nr20150422/nr20150422.html
• [Remarks] 放射光で成長 ナノクラスター
  • URL: http://www2.kek.jp/imss/news/2014/topics/1127nanocluster/
• [Remarks] 放射光で成長 ナノクラスター
  • URL: http://imss.kek.jp/news/2014/topics/1127nanocluster/
• [Remarks] エックス線と化学反応の同時利用で従来よりも小さなナノ粒子を合成
  • URL: http://www.aist.go.jp/aist_j/new_research/nr20150422/nr20150422.html