title: A conductive liquid-based surface acoustic wave device.
abstract: Surface acoustic wave-based microfluidic devices are popular for fluid and particle manipulation because of their noninvasiveness, low energy consumption, and easy integration with other systems. However, they have been limited by the use of patterned metal electrodes on a piezoelectric substrate, which requires expensive and complicated fabrication processes. Herein, we show a simpler and more cost-effective method for generating surface acoustic waves using eutectic gallium indium as a conductive liquid which can replace conventional patterned metal electrodes. We also demonstrate the comparable performance for acoustic streaming and mixing using conductive liquid-based surface acoustic wave devices.
authors.affiliation: Department of Laboratory Medicine, College of Medicine, Korea University, Korea University Guro Hospital, Guro 2-dong, Guro-gu, Seoul 152-703, Korea. jhnam77@gmail.com malarim@korea.ac.kr.
authors.forename: Jeonghun
authors.initials: J
authors.lastname: Nam
authors.forename: Chae Seung
authors.initials: CS
authors.lastname: Lim