The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2005
Filed:
Aug. 22, 2003
David G. Grier, Chicago, IL (US);
Eric R. Dufresne, Arlington, MA (US);
Jennifer E. Curtis, Chicago, IL (US);
Brian A. Koss, Chicago, IL (US);
David G. Grier, Chicago, IL (US);
Eric R. Dufresne, Arlington, MA (US);
Jennifer E. Curtis, Chicago, IL (US);
Brian A. Koss, Chicago, IL (US);
University of Chicago, Chicago, IL (US);
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.