Details

Autor(en) / Beteiligte

• Liao, Kang-Shyang
• Talla, Jamal A.
• Yambem, Soniya D.
• Birx, Donald
• Chen, Guo
• Coldren, Faith
• Carroll, David L.
• Ci, Lijie
• Ajayan, Pulickel M.
• Zhang, Donghui
• Curran, Seamus A.

Titel

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

Ist Teil von

• Journal of materials research, 2010-09, Vol.25 (9), p.1741-1747

Ort / Verlag

New York, USA: Cambridge University Press

Erscheinungsjahr

2010

Quelle

SpringerLink

Beschreibungen/Notizen

• Tight networks of interwoven carbon nanotube bundles are formed in our highly conductive composite. The composite possesses properties suggesting 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 it to 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 used appropriately, the interesting properties of these composites reveal their potential for practical device applications. For instance, we used this composite to fabricate coatings, which 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.