Ultrasound driven bubbles in microfluidics.

• Main Author: Goh, Cui Ying.
• Other Authors: Claus-Dieter Ohl
• Format: Final Year Project
• Language: English
• Published: 2009
• Subjects: DRNTU::Science::Physics::Acoustics and sound
• Online Access: http://hdl.handle.net/10356/18108
• Institution: Nanyang Technological University

Instead of using conventional valves, we look into using bubbles in microfluidics that are remotely-powered with an ultrasonic transducer to move and control fluid. The experimental approach was used in determining the ideal conditions for optimization of transduction. System adopted consisted of a glass slide with a soft polymer imprinted with microchannels plasma bonded to it. In the later section, bubbles in a flow-focusing device, coupled with ultrasound, were observed with an inverted microscope and high-speed camera.