Detail publikace

Stress and charge transfer in uniaxially strained CVD graphene

BOUŠA, M. ANAGNOSTOPOULOS, G. DEL CORRO, E. DROGOWSKA, K. PEKÁREK, J. KAVAN, L. KALBÁČ, M. PARTHENIOS, J. PAPAGELIS, K. GALIOTIS, C. FRANK, O.

Originální název

Stress and charge transfer in uniaxially strained CVD graphene

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Mechanical properties of graphene prepared by chemical vapour deposition (CVD) are not easily comparable to the properties of nearly perfect graphene prepared by mechanical cleavage. In this work, we attempt to investigate the mechanical performance of CVD graphene (simply supported or embedded in polymer matrix), transferred by two different techniques, under uniaxial loading with simultaneous in situ monitoring by Raman microspectroscopy. The level of charge transfer doping and strain is assessed using the vector analysis modified for uniaxial strain. The strain distribution across the samples varies significantly, owing to the growth and transfer process, which induces wrinkles and faults in the CVD graphene. In simply supported specimens, the stress transfer efficiency is generally very low and the changes in Raman spectra are dominated by variations in the charge transfer originating from the realignment of the domains on the substrate upon the application of strain. In contrast, samples covered with an additional polymer layer exhibit an improved stress transfer efficiency, and the alterations of charge doping levels are negligible. In fully embedded specimens, the variations in stress transfer efficiencies are caused by the size of the effective graphene domains defined by cracks, folds and/or wrinkles.

Klíčová slova

chemical vapour deposition, graphene, Raman spectroscopy, uniaxial tension

Autoři

BOUŠA, M.; ANAGNOSTOPOULOS, G.; DEL CORRO, E.; DROGOWSKA, K.; PEKÁREK, J.; KAVAN, L.; KALBÁČ, M.; PARTHENIOS, J.; PAPAGELIS, K.; GALIOTIS, C.; FRANK, O.

Vydáno

14. 7. 2016

Nakladatel

WILEY-VCH Verlag GmbH & Co. KGaA

Místo

Weinheim

ISSN

0370-1972

Periodikum

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS

Ročník

253

Číslo

12

Stát

Spolková republika Německo

Strany od

2355

Strany do

2361

Strany počet

7

BibTex

@article{BUT127900,
  author="Milan {Bouša} and George {Anagnostopoulos} and Elena {del Corro} and Karolina {Drogowska} and Jan {Pekárek} and Ladislav {Kavan} and Martin {Kalbáč} and John {Parthenios} and Konstantinos {Papagelis} and Costas {Galiotis} and Otakar {Frank}",
  title="Stress and charge transfer in uniaxially strained CVD graphene",
  journal="PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS",
  year="2016",
  volume="253",
  number="12",
  pages="2355--2361",
  doi="10.1002/pssb.201600233",
  issn="0370-1972"
}