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| Description
| - A detailed analysis of the in situ Raman spectroelectrochemical behavior of individual semiconducting single-walled carbon nanotubes (SWCNTs) is presented. Special attention has been paid to the development of the tangential (TG) mode frequency, which shifts when the externally applied potential Ve is shifted away from Ve = 0. The magnitude and direction (upshift or downshift) of the tangential mode band has been found to be dependent on the diameter of the semiconducting tubes. For negative charging, the small-diameter tubes exhibit a downshift while the large-diameter tubes exhibit an upshift. This behavior is explained by a competition between two effects which cause opposite shifts in the TG mode frequency during negative charging: a phonon renormalization effect and a C-C bond weakening during the charging process. Positive charging always causes an upshift of the TG mode frequency. However, the magnitude of the upshift is dependent on the tube diameter.
- A detailed analysis of the in situ Raman spectroelectrochemical behavior of individual semiconducting single-walled carbon nanotubes (SWCNTs) is presented. Special attention has been paid to the development of the tangential (TG) mode frequency, which shifts when the externally applied potential Ve is shifted away from Ve = 0. The magnitude and direction (upshift or downshift) of the tangential mode band has been found to be dependent on the diameter of the semiconducting tubes. For negative charging, the small-diameter tubes exhibit a downshift while the large-diameter tubes exhibit an upshift. This behavior is explained by a competition between two effects which cause opposite shifts in the TG mode frequency during negative charging: a phonon renormalization effect and a C-C bond weakening during the charging process. Positive charging always causes an upshift of the TG mode frequency. However, the magnitude of the upshift is dependent on the tube diameter. (en)
- V práci předkládáme detailní analýzu chování jednotlivých polovodivých jednostěnných uhlíkových nanotub (SWCNT) pomocí in situ Ramanské spektroelektrochemie. Zvláštní pozornost je věnována vývoji frekvence tangenciálního (TG) modu, která se mění pokud se vložený potenciál Ve odchýlí od hodnoty Ve = 0. Ukázalo se, že velikost a směr posunu TG modu jsou závislé na poloměru polovodivých tub. V případě negativního nabíjení tuby s malým poloměrem vykazují posun k nižším frekvencím zatímco tuby s větším poloměrem vykazují posun k vyšším frekvencím. Toto chování bylo vysvětleno konkurencí dvou efektů které způsobují posun opačným směrem během negativního dopování: renormalizace energie fononu a oslabení vazby C-C během procesu nabíjení. Positivní nabíjení vždy způsobuje posun TG modu k vyšším frekvencím, nicméně velikost posunu je také závislá na poloměru tub. (cs)
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| Title
| - Competition of a spring force constant and a phonon energy renormalization in electrochemically doped semiconducting single walled carbon nanotubes
- Competition of a spring force constant and a phonon energy renormalization in electrochemically doped semiconducting single walled carbon nanotubes (en)
- Konkurence silové konstanty a renormalizace energie fononu v elektrochemicky dopovaných polovodivých jednostěnných uhlíkových nanotubách (cs)
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| skos:prefLabel
| - Competition of a spring force constant and a phonon energy renormalization in electrochemically doped semiconducting single walled carbon nanotubes
- Competition of a spring force constant and a phonon energy renormalization in electrochemically doped semiconducting single walled carbon nanotubes (en)
- Konkurence silové konstanty a renormalizace energie fononu v elektrochemicky dopovaných polovodivých jednostěnných uhlíkových nanotubách (cs)
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| skos:notation
| - RIV/61388955:_____/08:00315304!RIV09-AV0-61388955
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GC203/07/J067), P(IAA400400804), Z(AV0Z40400503)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/08:00315304
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - spring force constant; electrochemistry; carbon nanotube (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Kalbáč, Martin
- Kavan, Ladislav
- Dresselhaus, M. S.
- Farhat, H.
- Kong, J.
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| http://linked.open...ain/vavai/riv/wos
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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