Vibrational spectroscopy of micrometer-scale structure

2016 Fiscal Year Final Research Report

• Project/Area Number: 26620119
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Analytical chemistry
• Research Institution: Kyoto University
• Principal Investigator: Sakka Tetsuo 京都大学, 工学研究科, 教授 (10196206)
• Co-Investigator(Renkei-kenkyūsha): NISHI Naoya 京都大学, 工学研究科, 准教授 (10372567) ; FUKAMI Kazuhiro 京都大学, 工学研究科, 准教授 (60452322)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 振動分光 / ミクロ構造 / 光散乱 / 光ヘテロダイン計測 / 固有振動 / 液滴 / 界面張力波 / 境界条件

Outline of Final Research Achievements

We study resonant frequencies of water sessile drops in various oils, as a first step toward the vibrational spectroscopy of micrometer-sized objects. The resonant frequency is experimentally obtained as a frequency shift of the scattered laser light using an optical heterodyne technique. The frequency of the water drops depend not only on the size and the interfacial tension, but also on the boundary condition at the contact line between the substrate. The optical heterodyne technique has an advantage that it can be applied to smaller objects, and hence, the present technique of the measurement must have wide range of potential applications.

Free Research Field

レーザー分光分析化学