- Journal Article
Rights / licenseIn Copyright - Non-Commercial Use Permitted
Cell and particle trapping experience a rising interest in a microfluidic context. Trapping of cells in suspension at distinct locations in a microfluidic domain is relevant for cell biological lab-on-a-chip systems, where a trap provides a well-definable microenvironment for cell response studies. This paper reports a novel acoustophoretic cell trapping effect on oscillating sharp edge structures which protrude into a microfluidic channel. These edge structures (125–250 μm length, 10–80 μm width in the experiments) were found to attract cells and particles strongly and reliably upon simple piezoelectric excitation around 1 MHz. The method is contact- and label-free, robust, and biocompatible. The physical trapping effect is experimentally characterized, and a numerical model is proposed, based on the theory of acoustic radiation forces. Show more
Journal / seriesMicrofluidics and Nanofluidics
Pages / Article No.
SubjectAcoustofluidics; Acoustophoresis; Acoustic radiation force; Acoustic streaming; Cell trapping
Organisational unit03307 - Dual, Jürg (emeritus) / Dual, Jürg (emeritus)
NotesIt was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
MoreShow all metadata