Formation of highly conductive composite coatings and their applications to broadband antennas and mechanical transducers

Liao, K. S., Talla, J. A., Yambem, S. D., Birx, D., Chen, G., Coldren, F., Carroll, D. L., Ci, L., Ajayan, P. M., Zhang, D., & Cumin, S. A. (2010) Formation of highly conductive composite coatings and their applications to broadband antennas and mechanical transducers. Journal of Materials Research, 25(9), pp. 1741-1747.

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Abstract

Tight networks of interwoven carbon nanotube bundles are formed in our highly conductive composite. The composite possesses propertiessuggesting a two-dimensional percolative network rather than other reported dispersions displaying three-dimensional networks. Binding nanotubes into large but tight bundles dramatically alters the morphology and electronic transport dynamics of the composite. This enables itto carry higher levels of charge in the macroscale leading to conductivities as high as 1600 S/cm. We now discuss in further detail, the electronic and physical properties of the nanotube composites through Raman spectroscopy and transmission electron microscopy analysis. When controlled and usedappropriately, the interesting properties of these composites reveal their potential for practical device applications. For instance, we used this composite to fabricate coatings, whic improve the properties of an electromagnetic antenna/amplifier transducer. The resulting transducer possesses a broadband range up to GHz frequencies. A strain gauge transducer was also fabricated using changes in conductivity to monitor structural deformations in the composite coatings.

Impact and interest:

10 citations in Scopus
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10 citations in Web of Science®

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ID Code: 86725
Item Type: Journal Article
Refereed: Yes
Keywords: Broad-band antenna, Carbon nanotube bundle, Conductive composites, Device application, Electronic transport, GHz frequencies, Macro scale, Mechanical transducers, Nanotube composites, Strain gauge, Structural deformation, Three-dimensional networks, Transmission electron, Carbon nanotubes, Gages, Raman spectroscopy, Transducers, Transmission electron microscopy, Composite coatings
DOI: 10.1557/jmr.2010.0221
ISSN: 08842914
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: © 2010 Materials Research Society.
Deposited On: 20 Aug 2015 04:48
Last Modified: 21 Aug 2015 03:13

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