Trapping, focusing and sorting of microparticles through bubble\n streaming

2010/10/15 by Cheng Wang, Wang, Cheng, Shreyas V. Jalikop +3
Engineering · Physics and Astronomy · #Microfluidic and Bio-sensing Technologies #Micro and Nano Robotics #Innovative Microfluidic and Catalytic Techniques Innovation

paper · pdf · doi:10.48550/arxiv.1010.3290

Abstract

Ultrasound-driven microbubbles rectify oscillatory motion into strong steady\nstreaming flow [1, 2]. In this fluid dynamics video, we show size-dependent\ntrapping, focusing and sorting of microparticles, utilizing the interaction\nbetween bubble streaming and the induced streaming around the mobile particles.\nThis mechanism is purely passive and is selective for sizes and size\ndifferentials far smaller than any scale imposed by the device geometry.\n

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