Nanometric laser trapping of microbubbles based on nanostructured substrates |
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| Authors: | A.R. Sidorov Y. Zhang M.R. Dickinson |
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| Affiliation: | a School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
b General Physics Institute, 38 Vavilov street, Moscow 117942, Russia |
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| Abstract: | Laser trapping near the surface of a nanostructured substrate is demonstrated. Stable microbubbles with radii of 1-20 μm 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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| Keywords: | Nanometric laser tweezers Gold nanoparticles Optical plasmon resonance Microbubbles |
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