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26 August 2005 Lens-less approach to image the optically-tweezed assembly
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We present an alternative approach to image and analyze a large amount of optically-bound particles without using microscope objective lenses. The polystyrene spheres were trapped and patterned in the one dimensional optical potential traps formed by two counter-propagating laser beams. Diffraction patterns from such polystyrene sphere assembly were studied and the result are reported. This method offers a significantly larger field of view and faster analysis over the conventional high-power microscope-based imaging technique. The applications of such technique to investigate the statistic (macroscopic) behaviors of a large number of microscopic particles trapped in the optical field were proposed.
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Gang Wang and J. B. Ketterson "Lens-less approach to image the optically-tweezed assembly", Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 593027 (26 August 2005);

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