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Applied Optics

Applied Optics


  • Vol. 44, Iss. 17 — Jun. 10, 2005
  • pp: 3454–3457

Magneto-optical tweezers built around an inverted microscope

Cyril Claudet and Jan Bednar  »View Author Affiliations

Applied Optics, Vol. 44, Issue 17, pp. 3454-3457 (2005)

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We present a simple experimental setup of magneto-optical tweezers built around an inverted microscope. Two pairs of coils placed around the focal point of the objective generate a planar-rotating magnetic field that is perpendicular to the stretching direction. This configuration allows us to control the rotary movement of a paramagnetic bead trapped in the optical tweezers. The mechanical design is universal and can be simply adapted to any inverted microscope and objective. The mechanical configuration permits the use of a rather large experimental cell and the simple assembly and disassembly of the magnetic attachment.

© 2005 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.0180) Medical optics and biotechnology : Microscopy
(170.1420) Medical optics and biotechnology : Biology
(230.3810) Optical devices : Magneto-optic systems

Original Manuscript: September 28, 2004
Revised Manuscript: January 24, 2005
Manuscript Accepted: January 31, 2005
Published: June 10, 2005

Cyril Claudet and Jan Bednar, "Magneto-optical tweezers built around an inverted microscope," Appl. Opt. 44, 3454-3457 (2005)

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