Abstract
We report on the feasible fabrication of microfluidic devices for noncontact particle trapping. A half-wavelength resonator was constructed using standard soft lithography to generate ultrasonic standing waves through a miniature piezoelectric transducer. Microparticles (400 nm to 10 μm in diameter) flowing through polydimethylsiloxane microchannels were efficiently trapped to levitate in the middle depth of a resonance cavity. Such a device could potentially offer a flexible platform for particle-based assays for a large variety of applications.
Original language | English |
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Article number | 213901 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 21 |
DOIs | |
Publication status | Published - 6 Jun 2008 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)