Slowness curve surface acoustic wave transducers for optimized acoustic streaming
Richard O'Rorke, Andreas Winkler, David Collins, Ye Ai
RSC Advances: an international journal to further the chemical sciences | Royal Society of Chemistry | Published : 2020
Surface acoustic waves can induce force gradients on the length scales of micro- and nanoparticles, allowing precise manipulation for particle capture, alignment and sorting activities. These waves typically occupy a spatial region much larger than a single particle, resulting in batch manipulation. Circular arc transducers can focus a SAW into a narrow beam on the order of the particle diameter for highly localised, single-particle manipulation by exciting wavelets which propagate to a common focal point. The anisotropic nature of SAW substrates, however, elongates and shifts the focal region. Acousto-microfluidic applications are highly dependent on the morphology of the underlying substra..View full abstract
Awarded by Singapore Ministry of Education Academic Research Fund Tier 2
Awarded by Singapore SMART Innovation Grant
This work was supported by Singapore Ministry of Education Academic Research Fund Tier 2 (T2MOE1603) and Singapore SMART Innovation Grant (SMIG17002) awarded to Y. A. This work was also supported by EFRE InfraPro project ChAMP of the IFW Dresden (A. W.).