@article{PATENT,
      recid = {8715},
      title = {Apparatus for using optical tweezers to manipulate  materials},
      number = {PATENT},
      month = {May},
      year = {2005},
      abstract = {A method and apparatus for control of optical trap arrays  and formation of particle arrays using light that is in the  visible portion of the spectrum. The method and apparatus  provides a laser and a time variable diffractive optical  element to allow dynamic control of optical trap arrays and  consequent control of particle arrays and also the ability  to manipulate singular objects using a plurality of optical  traps. By avoiding wavelengths associated with strong  absorption in the underlying material, creating optical  traps with a continuous-wave laser, optimizing the  efficiency of individual traps, and trapping extended  samples at multiple points, the rate of deleterious  nonlinear optical processes can be minimized.},
      url = {http://knowledge.uchicago.edu/record/8715},
}