US Patent 7906182 Method of thin film electrospray deposition

Patent 7906182 was granted and assigned to University of South Florida on March, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

University of South Florida

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7906182

Date of Patent

March 15, 2011

Patent Application Number

12353283

Date Filed

January 14, 2009

Patent Citations Received

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US Patent 11715852 Nanofluid contact potential difference battery

Patent Primary Examiner

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Frederick J Parker

Patent abstract

A method of forming a smooth thin film on a substrate within a short deposition time, the method comprising introducing ionic substances (salts, acids, bases) to a polymeric solution to be sprayed. These ions attach to the polymer strands in solution, increasing their charge to mass ratio. This results in mutual repulsion of the strands during the spray process and produces a smooth film, even at relatively high polymeric solution concentrations. A side effect of this process is the introduction of impurities (the added ions) to the polymer thin film. The proper choice of ionic compound allows a dissolution step to be used to “clean” the polymer film after deposition, using the solubility characteristics of the thin film versus the ionic compound.