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.
|Title of host publication||IEEE International Ultrasonics Symposium, IUS, 2013|
|Number of pages||4|
|Publication status||Published - 21 Jul 2013|
|Event||IEEE International Ultrasonics Symposium, IUS, 2013 - Prague Convention Center (PCC), Prague, Czech Republic|
Duration: 21 Jul 2013 → 25 Jul 2013
|Conference||IEEE International Ultrasonics Symposium, IUS, 2013|
|Period||21/07/13 → 25/07/13|