### Abstract

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.

Original language | English |
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Pages (from-to) | 3571-3586 |

Number of pages | 16 |

Journal | Proceedings of the Royal Society of London Series A - Mathematical Physical and Engineering Sciences |

Volume | 468 |

Issue number | 2147 |

Early online date | 11 Jul 2012 |

DOIs | |

Publication status | Published - 8 Nov 2012 |

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## Cite this

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