title: All-optical controllable trapping and transport of subwavelength particles on a tapered photonic crystal waveguide.
abstract: We propose that a tapered photonic crystal waveguide design can unify optical trapping and transport functionalities to advance the controllability of optical manipulation. Subwavelength particles can be trapped by a resonance-enhanced field and transported to a specified position along the waveguide on demand by varying the input wavelength. A simulated transport ability as high as 148 (transport distance/wavelength variation) is obtained by the waveguide with 0.1° tilted angle. Stable trapping of a 50 nm polystyrene particle can be achieved with input power of 7 mW. We anticipate that this design would be beneficial for future life science research and optomechanical applications.
authors.affiliation: Department of Photonics & Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan. rok926.eo97g@nctu.edu.tw
authors.forename: Pin-Tso
authors.initials: PT
authors.lastname: Lin
authors.forename: Po-Tsung
authors.initials: PT
authors.lastname: Lee
mesh_terms: D052898:Optical Tweezers; D017785:Photons