English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Helium diffraction and acoustic phonons of graphene grown on copper foil.

Al Taleb, A., Yu, H. K., Anemone, G., Farias, D., & Wodtke, A. M. (2015). Helium diffraction and acoustic phonons of graphene grown on copper foil. Carbon, 95, 731-737. doi:10.1016/j.carbon.2015.08.110.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-070B-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-E1A4-6
Genre: Journal Article

Files

show Files
hide Files
:
2227908.pdf (Publisher version), 2MB
Name:
2227908.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Al Taleb, A., Author
Yu, H. K., Author
Anemone, G., Author
Farias, D., Author
Wodtke, A. M.1, Author              
Affiliations:
1Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              

Content

show
hide
Free keywords: Graphene; Phonons; Helium atom scattering; CVD
 Abstract: We report helium diffraction from graphene grown by chemical vapour deposition (CVD) using copper foil. This method reveals acoustic phonons, which are physically important to thermal conductance as well as a sensitive probe of graphene's interactions with the underlying substrate. Helium diffraction is made possible by the high quality of graphene produced by a recently reported "peel-off method". The graphene lattice parameter was found to remain constant in the temperature range between 110 and 500 K. The measured parabolic dispersion of the flexural mode along (Gamma) over bar (M) over bar allows determining the bending rigidity k = ( 1.30 +/- 0.15) eV, and the graphene-Cu coupling strength g = ( 5.7 +/- 0.4) x 10(19) N/m(3). Unlike analytics employing atomic resolution microscopy, we obtain information on the atomic-scale quality of the graphene over mm length scales, suggesting the potential for Helium atom scattering to become an important tool for controlling the quality of industrially produced graphene.

Details

show
hide
Language(s): eng - English
 Dates: 2015-09-032015-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.carbon.2015.08.110
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Carbon
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 95 Sequence Number: - Start / End Page: 731 - 737 Identifier: -