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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA17-03662S" target="_blank" >GA17-03662S: Terahertzová vodivost v polovodičových nanostrukturách: fundamentální aspekty transportu a lokalizace náboje</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physics D-Applied Physics

ISSN

0022-3727

e-ISSN

—

Svazek periodika

51

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000418814600002

EID výsledku v databázi Scopus

2-s2.0-85040311323