title: Optical manipulation with planar silicon microring resonators.
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.
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Shiyun
authors.initials: S
authors.lastname: Lin
authors.forename: Ethan
authors.initials: E
authors.lastname: Schonbrun
authors.forename: Kenneth
authors.initials: K
authors.lastname: Crozier