Investigation of molecular transport techniques using soap film to realize new fluidic devices

Research Project

Project/Area Number	23655070
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Analytical chemistry
Research Institution	University of the Ryukyus
Principal Investigator	YONEKURA Nobuaki 琉球大学, 理学部, 准教授 (60291100)
Project Period (FY)	2011 – 2013
Project Status	Completed (Fiscal Year 2013)
Budget Amount *help	¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000) Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords	石けん膜 / 液滴 / 濡れ広がり / ブラウンラチェット / 流体デバイス / 電気泳動 / マランゴニ効果
Research Abstract	To realize new fluidic devices using soap film, we have investigated techniques for the transport of molecules in and on soap film. Viscous soap films optimized for stability can last for several days and allow us to transport analyte molecules involved in droplets on the films, not dispersed in the film. The droplets on the film are stable for several minutes without coalescing with the film and can flow and spread freely. It has been shown that the droplet containing polyvalent electrolytes on the film can be transported with a constant mobility by an electric field and separated by the valence.