Interactive manipulation of microparticles in an octagonal sonotweezer

A. L. Bernassau, C. R. P. Courtney, J. Beeley, B. W. Drinkwater, D. R. S. Cumming

Research output: Contribution to journalArticle

37 Citations (Scopus)
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Abstract

An ultrasonic device for micro-patterning and precision manipulation of micrometre-scale particles is demonstrated. The device is formed using eight piezoelectric transducers shaped into an octagonal cavity. By exciting combinations of transducers simultaneously, with a controlled phase delay between them, different acoustic landscapes can be created, patterning micro-particles into lines, squares, and more complex shapes. When operated with all eight transducers the device can, with appropriate phase control, manipulate the two dimensional acoustic pressure gradient; it thus has the ability to position and translate a single tweezing zone to different locations on a surface in a precise and programmable manner. (C) 2013 AIP Publishing LLC 

Original languageEnglish
Article number164101
Number of pages4
JournalApplied Physics Letters
Volume102
Issue number16
DOIs
Publication statusPublished - 22 Apr 2013

Keywords

  • ULTRASONIC STANDING WAVES
  • MAMMALIAN-CELLS
  • PARTICLES
  • SEPARATION

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