The articles for this special edition of were selected from work presented at the 2012 acoustofluidics conference (the 10th USWNet meeting, Lund, Sweden) to represent current progress in the field of ultrasound particle manipulation. They describe some of the new techniques which are being developed to measure the complex combination of flow, standing wave acoustics and their effects on biological systems, a combination which proves difficult for physics and engineering. These simple techniques are all aimed at measuring the parameters needed to help ultrasonic particle manipulation become a more widely used tool in microfluidics. Guest edited by Dr Jeremy Hawkes, University of Manchester.
Acoustophoresis has been utilized successfully in applications including cell trapping, focusing, and purification. One current limitation of acoustophoresis for cell sorting is the reliance on the inherent ph...