A feasibility study of a circular ultrasonic array device for acoustic particle manipulation is presented. A general approach based on Green's function is developed to analyse the underlying properties of a circular acoustic array. It allows the size of a controllable device area as a function of the number of array elements to be established and the array excitation required to produce a desired field distribution to be determined. A set of quantitative parameters characterizing the complexity of the pressure landscape is suggested, and relation to the number of array elements is found. Next, a finite-element model of a physically realizable circular piezo-acoustic array device is employed to demonstrate that the trapping capability can be achieved in practice.
|Number of pages||16|
|Journal||Proceedings of the Royal Society of London Series A - Mathematical Physical and Engineering Sciences|
|Early online date||11 Jul 2012|
|Publication status||Published - 8 Nov 2012|
Grinenko, A., Wilcox, P. D., Courtney, C. R. P., & Drinkwater, B. W. (2012). Proof of principle study of ultrasonic particle manipulation by a circular array device. Proceedings of the Royal Society of London Series A - Mathematical Physical and Engineering Sciences, 468(2147), 3571-3586. https://doi.org/10.1098/rspa.2012.0232