Modeling of Microdevices for SAW-Based Acoustophoresis — A Study of Boundary Conditions
AbstractWe present a ﬁnite-element method modeling of acoustophoretic devices consisting of a single, long, straight, water-ﬁlled microchannel surrounded by an elastic wall of either borosilicate glass (pyrex) or the elastomer polydimethylsiloxane (PDMS) and placed on top of a piezoelectric transducer that actuates the device by surface acoustic waves (SAW). We compare the resulting acoustic ﬁelds in these full solid-ﬂuid models with those obtained in reduced ﬂuid models comprising of only a water domain with simpliﬁed, approximate boundary conditions representing the surrounding solids. The reduced models are found to only approximate the acoustically hard pyrex systems to a limited degree for large wall thicknesses and but not very well for acoustically soft PDMS systems shorter than the PDMS damping length of 3 mm. View Full-Text
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Skov, N.R.; Bruus, H. Modeling of Microdevices for SAW-Based Acoustophoresis — A Study of Boundary Conditions. Micromachines 2016, 7, 182.
Skov NR, Bruus H. Modeling of Microdevices for SAW-Based Acoustophoresis — A Study of Boundary Conditions. Micromachines. 2016; 7(10):182.Chicago/Turabian Style
Skov, Nils R.; Bruus, Henrik. 2016. "Modeling of Microdevices for SAW-Based Acoustophoresis — A Study of Boundary Conditions." Micromachines 7, no. 10: 182.
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