Real-time interactive optical micromanipulation of a mixture of high-and low-index particles
Optics Express, Vol. 12, Issue 7, pp. 1417-1425 (2004)
http://dx.doi.org/10.1364/OPEX.12.001417
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Abstract
We demonstrate real-time interactive optical micromanipulation of a colloidal mixture consisting of particles with both lower (nL <n0 ) and higher (nH >n0 ) refractive indices than that of the suspending medium (n0 ). Spherical high- and low-index particles are trapped in the transverse plane by an array of confining optical potentials created by trapping beams with top-hat and annular cross-sectional intensity profiles, respectively. The applied method offers extensive reconfigurability in the spatial distribution and individual geometry of the optical traps. We experimentally demonstrate this unique feature by simultaneously trapping and independently manipulating various sizes of spherical soda lime micro - shells (nL ≈1.2) and polystyrene micro-beads (nH =1.57) suspended in water (n0 =1.33).
© 2004 Optical Society of America
OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(230.6120) Optical devices : Spatial light modulators
ToC Category:
Research Papers
History
Original Manuscript: February 4, 2004
Revised Manuscript: March 29, 2004
Published: April 5, 2004
Citation
Peter Rodrigo, Vincent Daria, and Jesper Glückstad, "Real-time interactive optical micromanipulation of a mixture of high-and low-index particles," Opt. Express 12, 1417-1425 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-7-1417
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