On-chip manipulation of single microparticles, cells, and organisms using surface acoustic waves

By X. Ding, S. Lin, B. Kiraly, Hongjun Yue, Sixing Li, I-Kao Chiang, Jinjie Shi, S. Benkovic, Tony Jun Huang. Proceedings of the National Academy of Sciences of the United States of America, 2012

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Holographic Acoustic Elements for Manipulation of Levitated Objects (2015, positive): “The accuracy of particle repositioning (Supplementary Tables 3 and 4; and Supplementary Note 8) was at least 0.4 mm ( λ /21) and up to 0.05 mm ( λ /171) depending on the trap and axis, which is comparable to that achieved in previous devices 12 .”
Surface Acoustic Wave Microfluidics (2014, background): “The particle spacing along the channel can also be varied with the use of tapered interdigital transducers (tIDTs) to modify the SAW frequency and hence wavelength along the sides of the channel in the one-dimensional and two-dimensional configurations (Ding et al. 2012b).”
Review on Cell Mechanics: Experimental and Modeling Approaches (2013, background): “These devices are commonly fabricated by placing a PDMS microchannel above a piezoelectric substrate with two interdigital transducers (IDTs) [327] [329].”