Temperature-induced strain release via rugae on the nanometer and micrometer scale in graphene monolayer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00476774" target="_blank" >RIV/61388955:_____/17:00476774 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/17:00476774 RIV/00216208:11320/17:10362180

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.carbon.2017.04.041" target="_blank" >http://dx.doi.org/10.1016/j.carbon.2017.04.041</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2017.04.041" target="_blank" >10.1016/j.carbon.2017.04.041</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Temperature-induced strain release via rugae on the nanometer and micrometer scale in graphene monolayer

Popis výsledku v původním jazyce

Wrinkles are one possible rugae phase that can be observed in two-dimensional crystals. Those topographic features, with dimensions ranging from nanometers to micrometers, can be identified in single-layer graphene transferred onto various substrates. When the temperature of the sample is varied, the different thermal expansion coefficients of graphene and its supporting substrate lead to reconstruction of the graphene's topography, which results in spatially inhomogeneous strain and doping. Using Raman spectral mapping, we investigated in situ the temperature dependence (50-300 K) of topographic features in a graphene monolayer grown by chemical vapor deposition (CVD) and transferred onto a Si/SiO2 substrate. We find that the temperature-induced strain follows the temperature variation of the cubic lattice parameter of the Si substrate. Furthermore, the temperature-induced strain has an unambiguous relation to the topographic reconstruction of the graphene monolayer.

Název v anglickém jazyce

Temperature-induced strain release via rugae on the nanometer and micrometer scale in graphene monolayer

Popis výsledku anglicky

Wrinkles are one possible rugae phase that can be observed in two-dimensional crystals. Those topographic features, with dimensions ranging from nanometers to micrometers, can be identified in single-layer graphene transferred onto various substrates. When the temperature of the sample is varied, the different thermal expansion coefficients of graphene and its supporting substrate lead to reconstruction of the graphene's topography, which results in spatially inhomogeneous strain and doping. Using Raman spectral mapping, we investigated in situ the temperature dependence (50-300 K) of topographic features in a graphene monolayer grown by chemical vapor deposition (CVD) and transferred onto a Si/SiO2 substrate. We find that the temperature-induced strain follows the temperature variation of the cubic lattice parameter of the Si substrate. Furthermore, the temperature-induced strain has an unambiguous relation to the topographic reconstruction of the graphene monolayer.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Carbon

ISSN

0008-6223

e-ISSN

—

Svazek periodika

119

Číslo periodika v rámci svazku

Aug

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

483-491

Kód UT WoS článku

000402713300058

EID výsledku v databázi Scopus

2-s2.0-85018760030