Pulsed electric field assisted assembly of polyaniline

Assembling conducting polyaniline (PANi) on pre-patterned nano-structures by a high rate, commercially viable route offers an opportunity for manufacturing devices with nanoscale features. In this work we report for the first time the use of pulsed electric field to assist electrophoresis for the as...

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Bibliographic Details
Published in:Nanotechnology 2012-08, Vol.23 (33), p.335303-335303
Main Authors: Kumar, Arun, Kazmer, David O, Barry, Carol M F, Mead, Joey L
Format: Article
Language:English
Subjects:
Assembly
Deposition
Electric fields
Electrophoresis
Nanocomposites
Nanomaterials
Nanostructure
Polyanilines
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Summary:Assembling conducting polyaniline (PANi) on pre-patterned nano-structures by a high rate, commercially viable route offers an opportunity for manufacturing devices with nanoscale features. In this work we report for the first time the use of pulsed electric field to assist electrophoresis for the assembly of conducting polyaniline on gold nanowire interdigitated templates. This technique offers dynamic control over heat build-up, which has been a main drawback in the DC electrophoresis and AC dielectrophoresis as well as the main cause of nanowire template damage. The use of this technique allowed higher voltages to be applied, resulting in shorter assembly times (e.g., 17.4 s, assembly resolution of 100 nm). Moreover, the area coverage increases with the increase in number of pulses. A similar trend was observed with the deposition height and the increase in deposition height followed a linear trend with a correlation coefficient of 0.95. When the experimental mass deposited was compared with Hamaker's theoretical model, the two were found to be very close. The pre-patterned templates with PANi deposition were subsequently used to transfer the nanoscale assembled PANi from the rigid templates to thermoplastic polyurethane using the thermoforming process.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/23/33/335303