Sensitivity improvement of vibrational spectroscopy by localized surface plasmon resonance.

Research Project

Project/Area Number	25888004
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Physical chemistry
Research Institution	University of Tsukuba
Principal Investigator	EGUCHI Miharu 筑波大学, 数理物質系, 助教 (10520778)
Co-Investigator(Renkei-kenkyūsha)	ISHIBASHI Taka-aki 筑波大学, 数理物質系, 教授 (70232337) OKUNO Masanari 筑波大学, 数理物質系, 助教 (00719065)
Project Period (FY)	2013-08-30 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000) Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000) Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords	表面プラズモン / 振動分光 / 金属ナノ粒子 / 表面増強ラマン散乱 / 金ナノ粒子 / 金薄膜 / ギャップモード / 振動共鳴和周波光
Outline of Final Research Achievements	The aim of this study is the sensitivity improvement a vibrational spectroscopy by surface plasmon resonance which is induced at the surface of metal nanoparticles or planes. The optical field enhancement is amplified at nano-gap between metal nanoparticle and metal plane, which is utilized as substrates for surface enhanced Raman scattering. Vibrational sum frequency generation spectroscopy was observed with the nano-gap, showing five-fold signal enhancement.