The propulsion of 3 μm polystyrene spheres along a subwavelength optical wire is demonstrated. Velocities in the range of 7-15 μm/s are observed. Simulations are carried out to evaluate the evanescent field at the waveguide-water suspension interface.
© 2007 Optical Society of America
Optical Tweezers or Optical Manipulation
Original Manuscript: July 24, 2007
Revised Manuscript: September 10, 2007
Manuscript Accepted: September 12, 2007
Published: October 12, 2007
G. Brambilla, G. Senthil Murugan, J. S. Wilkinson, and D. J. Richardson, "Optical manipulation of microspheres along a subwavelength optical wire," Opt. Lett. 32, 3041-3043 (2007)