Authors

Rudiger Schlaf

Document Type

Patent

Publication Date

March 2011

Patent Number

7906182

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.

Application Number

12/353,283

Assignees

University of South Florida

Filing Date

01/14/2009

Primary/U.S. Class

427/483

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