Abstract

In this work we describe and demonstrate for the first time, the alignment and simultaneous manipulation in 2-dimensions of both rod-like particles and hollow spheres, using interference fringes. These fringes were produced by separating a laser beam (Nd:YAG @ 1064 nm, 150 mW) and recombining the resultant beams at the focus of a x20 microscope objective. The pattern produced consisted of a set of parallel fringes which could be scanned across the area of the combined spot or moved as a whole around the sample cell. Observations of tweezing were done using a ×100 objective mounted below the sample cell.

© 2001 Optical Society of America

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