Acoustic Tweezing and Patterning of Concentration Fields in Microfluidics

  title={Acoustic Tweezing and Patterning of Concentration Fields in Microfluidics},
  author={Jonas Karlsen and Henrik Bruus},
  journal={Physical review applied},
We demonstrate theoretically that acoustic forces acting on inhomogeneous fluids can be used to pattern and manipulate solute concentration fields into spatio-temporally controllable configurations stabilized against gravity. A theoretical framework describing the dynamics of concentration fields that weakly perturb the fluid density and speed of sound is presented and applied to study manipulation of concentration fields in rectangular-channel acoustic eigenmodes and in Bessel-function… 

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