Ultrasonic particle trapping in microfluidic devices using soft lithography

S. S. Guo; L. B. Zhao; K. Zhang; Kwok Ho Lam; S. T. Lau; X. Z. Zhao; Y. Wang; H. L W Chan; Y. Chen; D. Baigl

doi:10.1063/1.2937910

Ultrasonic particle trapping in microfluidic devices using soft lithography

S. S. Guo, L. B. Zhao, K. Zhang, Kwok Ho Lam, S. T. Lau, X. Z. Zhao, Y. Wang, H. L W Chan, Y. Chen, D. Baigl

Research output: Journal article publication › Journal article › Academic research › peer-review

13 Citations (Scopus)

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
Article number	213901
Journal	Applied Physics Letters
Volume	92
Issue number	21
DOIs	https://doi.org/10.1063/1.2937910
Publication status	Published - 6 Jun 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2937910

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AU - Guo, S. S.

AU - Zhao, L. B.

AU - Zhang, K.

AU - Lam, Kwok Ho

AU - Lau, S. T.

AU - Zhao, X. Z.

AU - Wang, Y.

AU - Chan, H. L W

AU - Chen, Y.

AU - Baigl, D.

PY - 2008/6/6

Y1 - 2008/6/6

N2 - 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.

AB - 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.

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SN - 0003-6951

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M1 - 213901

ER -

Ultrasonic particle trapping in microfluidic devices using soft lithography

Abstract

ASJC Scopus subject areas

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