Wave number-spiral acoustic tweezers for dynamic and reconfigurable manipulation of particles and cells.

ABSTRACT: Acoustic tweezers have recently raised great interest across many fields including biology, chemistry, engineering, and medicine, as they can perform contactless, label-free, biocompatible, and precise manipulation of particles and cells. Here, we present wave number-spiral acoustic tweezers, which are capable of dynamically reshaping surface acoustic wave (SAW) wavefields to various pressure distributions to facilitate dynamic and programmable particle/cell manipulation. SAWs propagating in multiple directions can be simultaneously and independently controlled by simply modulating the multitone excitation signals. This allows for dynamic reshaping of SAW wavefields to desired distributions, thus achieving programmable particle/cell manipulation. We experimentally demonstrated the multiple

SUBMITTER: Tian Z 

PROVIDER: S-EPMC6544454 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature