A dual frequency, ultrasonic, microengineered particle manipulator

N Harris; M Hill; Y Shen; R J Townsend; S Beeby; N White

doi:10.1016/j.ultras.2004.01.056

A dual frequency, ultrasonic, microengineered particle manipulator

Ultrasonics. 2004 Apr;42(1-9):139-44. doi: 10.1016/j.ultras.2004.01.056.

Authors

N Harris¹, M Hill, Y Shen, R J Townsend, S Beeby, N White

Affiliation

¹ ECS, Southampton University, Highfield, Mountbatten 3007, Southampton SO17 1BJ, UK. nrh@ecs.soton.ac.uk

PMID: 15047275
DOI: 10.1016/j.ultras.2004.01.056

Abstract

Ultrasonic standing waves can be used to generate forces on particles within a fluid. Recent work has concentrated on developing devices that manipulate the particles so that they are concentrated near the centre of the cavity. It is also possible to design a device that concentrates the particles at the wall of a cavity. This paper describes a device that has the capability of operating in several modes to allow concentration of particles at either the cavity wall or the centre of the cavity, depending on the driving frequency.