Cavity-Assisted Manipulation of Freely Rotating Silicon Nanorods in High Vacuum

Authors/others:Kuhn, Stefan; Asenbaum, Peter; Kosloff, Alon (Tel Aviv University); Sclafani, Michele; Stickler, Benjamin A. (Universität Duisburg-Essen); Nimmrichter, Stefan (Universität Duisburg-Essen); Hornberger, Klaus (Universität Duisburg-Essen); Cheshnovsky, Ori (Tel Aviv University); Patolsky, Fernando (Tel Aviv University); Arndt, Markus
Abstract:Optical control of nanoscale objects has recently developed into a thriving field of research with far-reaching promises for precision measurements, fundamental quantum physics and studies on single-particle thermodynamics. Here, we demonstrate the optical manipulation of silicon nanorods in high vacuum. Initially, we sculpture these particles into a silicon substrate with a tailored geometry to facilitate their launch into high vacuum by laser-induced mechanical cleavage. We manipulate and trace their center-of-mass and rotational motion through the interaction with an intense intracavity field. Our experiments show that the anisotropy of the nanorotors leads to optical forces that are three times stronger than on silicon nanospheres of the same mass. The optical torque experienced by the spinning rods will enable cooling of the rotational motion and torsional optomechanics in a dissipation-free environment.
Number of pages:5
Date of publication:8.2015
Journal title:Nano Letters: a journal dedicated to nanoscience and nanotechnology
Peer reviewed:true
Digital Object Identifier (DOI):
Publication Type:Article