Virtual membrane for filtration of particles using surface acoustic waves (SAW).

@article{Fakhfouri2016VirtualMF,
  title={Virtual membrane for filtration of particles using surface acoustic waves (SAW).},
  author={Armaghan Fakhfouri and Citsabehsan Devendran and David J. Collins and Ye Ai and Adrian Neild},
  journal={Lab on a chip},
  year={2016},
  volume={16 18},
  pages={
          3515-23
        }
}
Surface acoustic wave (SAW) based particle manipulation is contactless, versatile, non-invasive and biocompatible making it useful for biological studies and diagnostic technologies. In this work, we present a sensitive particle sorting system, termed the virtual membrane, in which a periodic acoustic field with a wavelength on the order of particle dimensions permits size-selective filtration. Polystyrene particles that are larger than approximately 0.3 times the acoustic half-wavelength… 
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