Surface acoustic wave concentration of particle and bioparticle suspensions.

@article{Li2007SurfaceAW,
  title={Surface acoustic wave concentration of particle and bioparticle suspensions.},
  author={Haiyan Li and James R. Friend and Leslie Y. Yeo},
  journal={Biomedical microdevices},
  year={2007},
  volume={9 5},
  pages={647-56}
}
A rapid particle concentration method in a sessile droplet has been developed using asymmetric surface acoustic wave (SAW) propagation on a substrate upon which the droplet is placed. Due to the asymmetry in the SAW propagation, azimuthal bulk liquid recirculation (acoustic streaming) is generated. Once the local particle concentration is sufficiently high within a particular streamline of the acoustic streaming convective flow, shear-induced migration gives rise to an inward radial force that… CONTINUE READING
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