Nanometric laser trapping based on nanostructured substrates

Abstract

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.

17 pages, 4 figures, 1 table

References in corpus (3)

• Nanofabricated media with negative permeability at visible frequencies
• Optomagnetic composite medium with conducting nanoelements
• An antisymmetric plasmon resonance in coupled gold nanoparticles as a sensitive tool for detection of local index of refraction

Cited by in corpus (3)

• Plasmonic Optical Tweezers based on Nanostructures: fundamentals, advances and prospects
• Plasmon enhanced optical tweezers with gold-coated black silicon
• Near-field enhanced optical tweezers utilizing femtosecond-laser nanostructured substrates