Dielectric properties of vertically aligned multi-walled carbon nanotubes in the terahertz and mid-infrared range

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00489481" target="_blank" >RIV/68378271:_____/18:00489481 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1361-6463/aa9e42" target="_blank" >http://dx.doi.org/10.1088/1361-6463/aa9e42</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6463/aa9e42" target="_blank" >10.1088/1361-6463/aa9e42</a>

Result language
angličtina
Original language name
Dielectric properties of vertically aligned multi-walled carbon nanotubes in the terahertz and mid-infrared range
Original language description
We investigate the broadband dielectric properties of vertically aligned, multi-wall carbon nanotubes (VACNT), over both the terahertz (THz) and mid-infrared spectral ranges. A detailed comparison of various conductivity models and previously reported results is presented for the non-Drude behaviour we observe in the conventional THz range (up to 2.5 THz). Extension to the mid-infrared range reveals an absorption peak at 24 THz. To account for the observed resonance here, we apply a Bergman-type effective-medium theory including both the intra- and inter-tube response, which can reproduce the observed spectrum if one assumes a much higher plasma frequency and scattering rate than that reflected in the low-frequency spectra, and proposes an explanation for the non-Drude behaviour at low-frequencies.n
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA17-03662S" target="_blank" >GA17-03662S: Terahertz conductivity in semiconductor nanostructures: fundamental aspects of charge transport and confinement</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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