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    Collective antenna effects in the terahertz and infrared response of highly aligned carbon nanotube arrays

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    Ren, L.; Zhang, Q.; Pint, C.L.; Wójcik, A.K.; Bunney, M. Jr; More... Arikawa, T.; Kawayama, I.; Tonouchi, M.; Hauge, R.H.; Belyanin, A.A.; Kono, J. Less...
    Date
    2013
    Abstract
    We study macroscopically aligned single-wall carbon nanotube arrays with uniform lengths via polarization-dependent terahertz and infrared transmission spectroscopy. Polarization anisotropy is extreme at frequencies less than ∼100 cm−1 with no sign of attenuation when the polarization is perpendicular to the alignment direction. The attenuation for both parallel and perpendicular polarizations increases with increasing frequency, exhibiting a pronounced and broad peak around 450 cm−1 in the parallel case. We model the electromagnetic response of the sample by taking into account both radiative scattering and absorption losses. We show that our sample acts as an effective antenna due to the high degree of alignment, exhibiting much larger radiative scattering than absorption in the mid/far-infrared range. Our calculated attenuation spectrum clearly shows a non-Drude peak at ∼450 cm−1 in agreement with the experiment.
    Citation
    Ren, L., Zhang, Q., Pint, C.L., et al.. "Collective antenna effects in the terahertz and infrared response of highly aligned carbon nanotube arrays." Physical Review B, 87, (2013) The American Physical Society: 161401. http://dx.doi.org/10.1103/PhysRevB.87.161401.
    Published Version
    http://dx.doi.org/10.1103/PhysRevB.87.161401
    Type
    Journal article
    Publisher
    The American Physical Society
    Citable link to this page
    https://hdl.handle.net/1911/78266
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • ECE Publications [1443]
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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map