Development of resonant capillary wave measurement method and its application to nanofluidic interfaces

2015 Fiscal Year Final Research Report

• Project/Area Number: 24350038
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Analytical chemistry
• Research Institution: Tokyo Institute of Technology (2013-2015); The University of Tokyo (2012)
• Principal Investigator: Hibara Akihide 東京工業大学, 大学院理工学研究科, 准教授 (30312995)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: マイクロ流体 / ナノ流体 / 自由界面 / 界面張力波 / 光散乱 / 共鳴

Outline of Final Research Achievements

A quasi-elastic laser scattering (QELS) method utilizing capillary wave resonance has been investigated for measuring surface or interfacial tension of microscale liquid interface. In the resonant power spectrum of QELS method, characteristic peaks which are independent of the optical setup were observed and could be utilized for determining the tension. In this study, we have improved the QELS theory for power spectrum prediction, investigated microfluidic devices and optical apparatuses, and discussed 1-micrometer-sized small liquid interfaces.

Free Research Field

分析化学