We report a series of experiments in which Mie-scattering particles were optically driven in the evanescent field that is generated in a channeled waveguide. Polystyrene latex spheres with diameters of 1–5 μm were laterally trapped within the evanescent field, which was produced by a cw laser beam incident upon the waveguide and then longitudinally driven along the direction of the waveguide channel at speeds of as much as 14 μm/s. Metallic spheres of gold (0.5-μm diameter) and platinum (1-μm diameter) were also laterally trapped and longitudinally moved along the waveguide channel.
© 1996 Optical Society of America
Original Manuscript: July 5, 1996
Published: November 1, 1996
S. Kawata and T. Tani, "Optically driven Mie particles in an evanescent field along a channeled waveguide," Opt. Lett. 21, 1768-1770 (1996)