Optical manipulation with planar silicon microring resonators.
basic_science · Level V
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- Record sourced from PubMed, PMID 20545333.
- Also identified by DOI 10.1021/nl100501d.
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Abstract
We demonstrate optically trapping of microparticles on silicon microring resonators. Once trapped on a microring, a particle can be confined in an optical potential with a depth of 25 k(B)T over the entire microring's circumference. The particles are propelled around the microring at hundreds of micrometers per second, producing periodic revolutions at a few hertz. We anticipate that the increased force and highly accurate positioning obtainable with this system will lead to various nanomanipulation applications.