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Creation and Manipulation of Three-Dimensional Optically Trapped Structures

Science  10 May 2002:
Vol. 296, Issue 5570, pp. 1101-1103
DOI: 10.1126/science.1069571

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Abstract

An interferometric pattern between two annular laser beams is used to construct three-dimensional (3D) trapped structures within an optical tweezers setup. In addition to being fully translatable in three dimensions, the trapped structure can be rotated controllably and continuously by introducing a frequency difference between the two laser beams. These interference patterns could play an important role in the creation of extended 3D crystalline structures.

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