Events Calendar

Microchannel Acoustophoresis in Biochips

Henrik Bruus Professor Department of Micro- and NanotechnologyTechnical University of DenmarkDTU Bldg. 345east DK-2800 Kongens Lyngby Denmark ABSTRACT:Within the past five years there has been a significant increase in the number of novel applications of ultrasound standing waves for particle handling in microfluidic biochips. In spite of this growing interest, detailed measurements of the resonance line shapes are lacking. We present such measure­ments, published recently in Lab Chip 10, 563 (2010), based on tracking of individual polystyrene microbeads during acoustophoretic motion in straight water-filled microchannels in silicon/glass chips subject to piezo-induced ultrasonic pressure fields. From the measured line shapes we extract the corresponding Q-values and thus gain insight in the nature of the acoustic energy dissipation in such systems. The talk will end with examples of on-chip in vivo acoustophoresis of cells.

Location: Seaver Science Library, SSL Rm 150

Audiences: Everyone Is Invited

Contact: April Mundy