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Title: Roll-to-roll light directed electrophoretic deposition system and method

A roll-to-roll light directed electrophoretic deposition system and method advances a roll of a flexible electrode web substrate along a roll-to-roll process path, where a material source is positioned to provide on the flexible electrode web substrate a thin film colloidal dispersion of electrically charged colloidal material dispersed in a fluid. A counter electrode is also positioned to come in contact with the thin film colloidal dispersion opposite the flexible electrode web substrate, where one of the counter electrode and the flexible electrode web substrate is a photoconductive electrode. A voltage source is connected to produce an electric potential between the counter electrode and the flexible electrode web substrate to induce electrophoretic deposition on the flexible electrode web substrate when the photoconductive electrode is rendered conductive, and a patterned light source is arranged to illuminate the photoconductive electrode with a light pattern and render conductive illuminated areas of the photoconductive electrode so that a patterned deposit of the electrically charged colloidal material is formed on the flexible electrode web substrate.
Issue Date:
OSTI Identifier:
Lawrence Levermore National Security, LLC LLNL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2016 Feb 03
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
Country of Publication:
United States

Other works cited in this record:

Electrophoretic Imaging Method
patent, November 1974

Electrophoretic migration imaging apparatus and method utilizing enlarged migration environment
patent, December 1978

Surface Modification in a Manipulation Chamber
patent-application, September 2009

Methods of Three-Dimensional Electrophoretic Deposition for Ceramic and Cermet Applications and Systems Thereof
patent-application, October 2011

Light-Directed Electrophoretic Deposition: A New Additive Manufacturing Technique for Arbitrarily Patterned 3D Composites
journal, February 2014
  • Pascall, Andrew J.; Qian, Fang; Wang, Gongming
  • Advanced Materials, Vol. 26, Issue 14, p. 2252-2256
  • DOI: 10.1002/adma.201304953

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