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Fabrication of Conductive Polymeric Arrays using Direct Laser Interference micro/nano Patterning

Published online by Cambridge University Press:  01 February 2011

Andrés Fabian Lasagni ,
Diego Acevedo ,
Cesar Barbero  and
Frank Muecklich
Andrés Fabian Lasagni
Affiliation:
[email protected], Georgia Institute of Technology, Woodruff School of Mechanical Engineering, 801 Ferst Drive, Atlanta, GA 30332-0405, USA, Atlanta, GA, 30363, United States, 404 385 3407
Diego Acevedo
Affiliation:
[email protected], Universidad Nacional de Río Cuarto, Departamento de Química, Río Cuarto, X5804ZAB, Argentina
Cesar Barbero
Affiliation:
[email protected], Universidad Nacional de Río Cuarto, Departamento de Química, Río Cuarto, X5804ZAB, Argentina
Frank Muecklich
Affiliation:
[email protected], Saarland University, Functional Materials, Saarbruecken, N/A, Germany
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Abstract

Thin films of polyaniline (PANI) deposited onto different substrates were nano-structured using direct laser interference patterning (DLIP) at room temperature and pressure in air atmosphere. Regular line-like arrays with thicknesses up to 600 nm were fabricated by means of this technique in only one single step. The activity of the remained polyaniline was determined by monitoring its doping level using Energy Dispersive X-Ray Analysis (EDX), while its chemical structure was confirmed by Fourier Transform Infrared Spectroscopy using Attenuated Transmission Reflectance (FTIR-ATR). The structuring mechanisms of PANI supported in both polycarbonate (PC) and polyimide (PI) films were demonstrated using cross-sectional analyses performed with a dual-beam workstation (FIB/SEM Tomography). Moreover, by varying the fluence of the laser beam, it is possible to control the width of the PANI arrays, and large areas (mm2 - cm2) could be patterned. Additionally, electrical resistance measurements of the individual PANI strips demonstrated that electrical properties of unmodified regions remain unchanged.

Keywords

laser ablationstructurallithography (removal)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1030: Symposium G – Large-Area Processing and Patterning for Active Optical and Electronic Devices , 2007 , 1030-G06-01
Copyright
Copyright © Materials Research Society 2008

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