Inventor

Susan D. Allen

Document Type

Patent

Patent Number

US Patent 4,987,286

Patent agency

United States Patent and Trademark Office

Publication Date

1-22-1991

Assignee

University of Iowa Research Foundation (Iowa City, IA, US)

Application Number

07/429,026

Date Filed

1989-10-30

Total Pages

11 pages

Abstract

Method and apparatus for removing minute particles (as small as submicron) from a surface to which they are adhered. An energy transfer medium is interposed between each particle to be removed and the surface to which the particles are adhered. The medium is an irradiated with laser energy at a wavelength which is strongly absorbed by the medium. The medium absorbs sufficient energy to cause explosive evaporation with sufficient force to dislodge the particles. Preferably means are provided to remove dislodged particles to prevent redeposit on the surface.

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URL

https://ir.uiowa.edu/patents/82