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Methods for producing films using supercritical fluid

United States Patent

June 15, 2004
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A method for forming a continuous film on a substrate surface that involves depositing particles onto a substrate surface and contacting the particle-deposited substrate surface with a supercritical fluid under conditions sufficient for forming a continuous film from the deposited particles. The particles may have a mean particle size of less 1 micron. The method may be performed by providing a pressure vessel that can contain a compressible fluid. A particle-deposited substrate is provided in the pressure vessel and the compressible fluid is maintained at a supercritical or sub-critical state sufficient for forming a film from the deposited particles. The T.sub.g of particles may be reduced by subjecting the particles to the methods detailed in the present disclosure.
Yonker; Clement R. (Kennewick, WA), Fulton; John L. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
10/ 157,591
May 28, 2002
STATEMENT OF GOVERNMENT SUPPORT This invention was made with United States Government support under Contract DE-AC0676RLO1830 awarded by the U.S. Department of Energy. The United States Government has certain rights in the invention.