Interactive manipulation of microparticles in an octagonal sonotweezer
Interactive manipulation of microparticles in an octagonal sonotweezer
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DOI：
10.1063/1.4802754
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发表时间：
2013-04-22
影响因子：
4
通讯作者：
Cumming, D. R. S.
中科院分区：
文献类型：
--
作者：
Bernassau, A. L.;Courtney, C. R. P.;Cumming, D. R. S.
展示了一种用于微米级颗粒微图案化和精确操作的超声装置。该装置由八个制成八角形腔体的压电换能器构成。通过同时激励换能器的不同组合，并在它们之间设置可控的相位延迟，可以创建不同的声学场景，将微粒排列成直线、正方形以及更复杂的形状。当八个换能器全部工作时，通过适当的相位控制，该装置能够操纵二维声压梯度；因此它能够以精确且可编程的方式将单个镊子区域定位并平移到表面上的不同位置。（C）2013美国物理联合会出版有限责任公司[http://dx.doi.org/10.1063/1.4802754]
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 [http://dx.doi.org/10.1063/1.4802754]