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Optics Letters

Optics Letters


  • Vol. 24, Iss. 21 — Nov. 1, 1999
  • pp: 1448–1450

Optical trapping of nanoparticles and microparticles by a Gaussian standing wave

Pavel Zemánek, Alexandr Jonáš, Libor Šrámek, and Miroslav Liška  »View Author Affiliations

Optics Letters, Vol. 24, Issue 21, pp. 1448-1450 (1999)

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The optical trapping of nanoparticles and microparticles by a Gaussian standing wave is experimentally demonstrated for the first time to the authors' knowledge. The standing wave is obtained under a microscope objective as a result of the interference of an incoming laser beam and a beam reflected on a microscope slide that has been coated with a system of reflective dielectric layers. Experimental results show that three-dimensional trapping of nanoparticles (100-nm polystyrene spheres) and one or more vertically aligned micro-objects (5-μm polystyrene spheres, yeast cells) can easily be achieved by use of even highly aberrated beams or objectives with low numerical apertures.

© 1999 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(290.0290) Scattering : Scattering

Pavel Zemánek, Alexandr Jonáš, Libor Šrámek, and Miroslav Liška, "Optical trapping of nanoparticles and microparticles by a Gaussian standing wave," Opt. Lett. 24, 1448-1450 (1999)

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