Nanometric laser trapping based on nanostructured substrates

Details Nanometric laser trapping based on nanostructured substrates Nanometric laser trapping based on nanostructured substrates

2006-03-26

arxiv.org/abs/physics/0603217v1

Nature Photonics 2, 365-370 (2008)

Physics

Optics

17 pages, 4 figures, 1 table

Scientific paper

10.1016/j.optcom.2007.06.027

Laser trapping near the surface of a nanostructured substrate is demonstrated. Stable microbubbles with radii of 1-20micrometers have been created and manipulated with sub-micron precision by a focused laser beam in an immersion oil covering arrays of pairs of gold nanopillars deposited on a glass substrate. The threshold for bubble creation and trapping characteristics depended on near-field coupling of nanopillars. The nanometric laser tweezers showed giant trapping efficiency of Q~50 for the trapped microbubbles.

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