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In article number 2000462, David J. Collins, Ye Ai, and co‐workers demonstrate the generation of robust nanoscale force gradients from interactions between MHz acoustic waves and nanocavities, which enables massively multiplexed sub‐micron particle trapping within these nanocavities at the single‐particle level.
Nanoacoustic fields are a promising method for particle actuation at the nanoscale, though THz frequencies are typically required to create nanoscale wavelengths. In this work, the generation of robust nanoscale force gradients is demonstrated using MHz driving frequencies via acoustic‐structure interactions. A structured elastic layer at the interface between a microfluidic channel and a traveling...
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