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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 8 — Apr. 12, 2010
  • pp: 7611–7616

Shear stress mapping in microfluidic devices by optical tweezers

Jing Wu, Daniel Day, and Min Gu  »View Author Affiliations


Optics Express, Vol. 18, Issue 8, pp. 7611-7616 (2010)
http://dx.doi.org/10.1364/OE.18.007611


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Abstract

We present an optical tweezer sensor for shear stress mapping in microfluidic systems of different internal geometries. The sensor is able to measure the shear stress acting on microspheres of different sizes that model cell based biological operations. Without the need for a spatial modulator or a holographic disk, the sensor allows for direct shear stress detection at arbitrary positions in straight and curved microfluidic devices. Analytical calculations are carried out and compared with the experimental results. It is observed that a decrease in the microsphere size results in an increase in the shear stress the particle experiences.

© 2010 OSA

OCIS Codes
(130.6010) Integrated optics : Sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

History
Original Manuscript: March 5, 2010
Manuscript Accepted: March 24, 2010
Published: March 29, 2010

Virtual Issues
Vol. 5, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Jing Wu, Daniel Day, and Min Gu, "Shear stress mapping in microfluidic devices by optical tweezers," Opt. Express 18, 7611-7616 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-8-7611


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