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Dielectric anisotropy of nematic liquid crystals loaded with carbon nanotubes in microwave range
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Trushkevych, Oksana, Gölden, F., Pivnenko, M., Xu, H., Collings, N., Crossland, W.A., Müller, S. and Jakoby, R. (2010) Dielectric anisotropy of nematic liquid crystals loaded with carbon nanotubes in microwave range. Electronics Letters, 46 (10). pp. 693-695. doi:10.1049/el.2010.0752 ISSN 00135194.
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Official URL: http://dx.doi.org/10.1049/el.2010.0752
Abstract
Liquid crystals are attractive materials for microwave applications as tunable dielectrics owing to low losses and high anisotropy of dielectric properties. The possibility of further enhancing their dielectric anisotropy is studied by loading with highly polarisable and anisotropic rods–carbon nanotubes at various concentrations. The studies are performed using two different methods, one in the range 1–4 GHz and the other at 30 GHz. More than two times increase of microwave dielectric anisotropy in liquid crystals is reported when loaded with 0.01%wt of carbon nanotubes, which is a metastable suspension and 28% increase in an equilibrated suspension. The stability of the LC-CNT composites is discussed.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Library of Congress Subject Headings (LCSH): | Liquid crystals -- Materials, Dielectrics, Carbon nanotubes | ||||||
Journal or Publication Title: | Electronics Letters | ||||||
Publisher: | The Institution of Engineering and Technology | ||||||
ISSN: | 00135194 | ||||||
Official Date: | 20 May 2010 | ||||||
Dates: |
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Volume: | 46 | ||||||
Number: | 10 | ||||||
Page Range: | pp. 693-695 | ||||||
DOI: | 10.1049/el.2010.0752 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 14 September 2017 | ||||||
Date of first compliant Open Access: | 14 September 2017 | ||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Cambridge. Centre for Advanced Photonics and Electronics (CAPE), ALPS Electric (Firm), Dow Corning Corporation | ||||||
Grant number: | Platform Grant GR/S12074/02 (EPSRC) |
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