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Title: Surface tension mediated conversion of light to work

Patent ·
OSTI ID:1164706

Disclosed are a method and apparatus for converting light energy to mechanical energy by modification of surface tension on a supporting fluid. The apparatus comprises an object which may be formed as a composite object comprising a support matrix and a highly light absorptive material. The support matrix may comprise a silicon polymer. The highly light absorptive material may comprise vertically aligned carbon nanotubes (VANTs) embedded in the support matrix. The composite object is supported on a fluid. By exposing the highly light absorptive material to light, heat is generated, which changes the surface tension of the composite object, causing it to move physically within the fluid.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
8,899,044
Application Number:
13/069,131
OSTI ID:
1164706
Resource Relation:
Patent File Date: 2011 Mar 22
Country of Publication:
United States
Language:
English

References (6)

Power generating apparatus using radiant energy patent August 1983
Cast - away bobber patent-application May 2005
Surface Tension Mediated Conversion of Light to Work journal April 2009
Large-scale simulations of fluctuating biological membranes journal April 2010
Optical thin-film materials with low refractive index for broadband elimination of Fresnel reflection journal March 2007
Thermal Properties of Metal-Coated Vertically Aligned Single-Wall Nanotube Arrays journal April 2008