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Photolithographic patterning of conducting polyaniline films via flash welding

Henderson, Rowan D. and Breadmore, Michael C. and Dennany, Lynn and Guijt, Rosanne M. and Haddad, Paul R. and Hilder, Emily F. and Innis, Peter C. and Lewis, Trevor W. and Wallace, Gordon G. and , Australian Centre for Research On Separation Science ACROSS, School of Chemistry, University of Tasmania, Hobart Australia and , School of Chemistry, University of Tasmania, Launceston, Australia and , ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Australia (2010) Photolithographic patterning of conducting polyaniline films via flash welding. Synthetic Metals, 160 (13-14). pp. 1405-1409. ISSN 0379-6779

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    Abstract

    In this work, two significant advances in photolithographic patterning of polyaniline (PANI) films are reported. Firstly, flash welding was enhanced through the use of polymeric substrates, enabling complete penetration of the welding of PANI films with thicknesses ranging from 5 to over 14 mu m, significantly thicker than reported previously. Masking of parts of the PANI films during flash welding enabled the formation of adjacent conducting and insulating regions as the welding changes the electrical properties of the film. Raman spectroscopy was used to determine the sharpness of these edges, and indicated that the interface between the flash welded and masked regions of the PANI films was typically less than 15 mu m wide. Secondly, using longpass filters, light with a wavelength less than 570 nm was found not to contribute to the welding process. This was confirmed by the use of a 635 nm laser diode for welding the PANI films. This novel approach enabled patterning of PANI films using a direct writing technique with a narrow wavelength light source.

    Item type: Article
    ID code: 27844
    Keywords: polyaniline, patterning, flash welding, Science (General), Chemistry, Materials Chemistry, Mechanics of Materials, Metals and Alloys, Mechanical Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics
    Subjects: Science > Science (General)
    Science > Chemistry
    Department: Faculty of Science > Pure and Applied Chemistry
    Related URLs:
      Depositing user: Ms Lorraine Stewart
      Date Deposited: 12 May 2011 15:26
      Last modified: 05 Sep 2014 13:20
      URI: http://strathprints.strath.ac.uk/id/eprint/27844

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