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Photolithographic patterning of conducting polyaniline films via flash welding


Henderson, RD and Breadmore, MC and Dennany, L and Guijt, RM and Haddad, PR and Hilder, EF and Innis, PC and Lewis, TW and Wallace, GG, Photolithographic patterning of conducting polyaniline films via flash welding, Synthetic Metals, 160, (13-14) pp. 1405-1409. ISSN 0379-6779 (2010) [Refereed Article]

DOI: doi:10.1016/j.synthmet.2010.04.018


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 μm, 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 μm 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. © 2010 Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Separation science
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Henderson, RD (Mr Rowan Henderson)
UTAS Author:Breadmore, MC (Professor Michael Breadmore)
UTAS Author:Guijt, RM (Dr Rosanne Guijt)
UTAS Author:Haddad, PR (Professor Paul Haddad)
UTAS Author:Hilder, EF (Professor Emily Hilder)
UTAS Author:Lewis, TW (Associate Professor Trevor Lewis)
ID Code:67606
Year Published:2010
Web of Science® Times Cited:12
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2011-03-05
Last Modified:2011-05-03

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