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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 21 — Oct. 12, 2009
  • pp: 18525–18532

Optically driven micropump with a twin spiral microrotor

Shoji Maruo, Akira Takaura, and Yohei Saito  »View Author Affiliations

Optics Express, Vol. 17, Issue 21, pp. 18525-18532 (2009)

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An optically driven micropump that employs viscous drag exerted on a spinning microrotor with left- and right-handed spiral blades on its rotational axis has been developed using two-photon microfabrication. It was demonstrated that the twin spiral microrotor provides a higher rotation speed than a single spiral microrotor. The rotation speed reached 560 rpm at a laser power of 500 mW. The twin spiral microrotor was also applied to a viscous micropump with a U-shaped microchannel. To pump fluid, the twin spiral microrotor located at the corner of the U-shaped microchannel was rotated by focusing a laser beam. The flow field inside the U-shaped microchannel was analyzed using the finite element method (FEM) based on the Navier-Stokes equation to optimize the shape of the microchannel. It was confirmed that the rotation of the twin spiral microrotor generated a unidirectional laminar flow. Finally, a tandem micropump using two twin spiral microrotors was driven by a dual optical trapping system using a spatial light modulation technique.

© 2009 OSA

OCIS Codes
(090.1760) Holography : Computer holography
(120.4610) Instrumentation, measurement, and metrology : Optical fabrication
(140.7010) Lasers and laser optics : Laser trapping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: August 20, 2009
Revised Manuscript: September 23, 2009
Manuscript Accepted: September 24, 2009
Published: September 29, 2009

Virtual Issues
Vol. 4, Iss. 12 Virtual Journal for Biomedical Optics

Shoji Maruo, Akira Takaura, and Yohei Saito, "Optically driven micropump with a twin spiral microrotor," Opt. Express 17, 18525-18532 (2009)

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