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 journalArticlepeer-review

49 Citations (SciVal)


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.
Original languageEnglish
Article number164101
JournalApplied Physics Letters
Issue number16
Publication statusPublished - 22 Apr 2013


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