Influence of the layer number and stacking order on out-of-plane phonons in few-layer graphene

2013 ◽  
Vol 250 (12) ◽  
pp. 2697-2701 ◽  
Author(s):  
Felix Herziger ◽  
Janina Maultzsch
Keyword(s):  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Out Of Plane ◽  
Few Layer Graphene

Imaging layer number and stacking order through formulating Raman fingerprints obtained from hexagonal single crystals of few layer graphene

2012 ◽  
Vol 24 (1) ◽  
pp. 015702 ◽  
Author(s):  
Jih-Shang Hwang ◽  
Yu-Hsiang Lin ◽  
Jeong-Yuan Hwang ◽  
Railing Chang ◽  
Surojit Chattopadhyay ◽  
...  
Keyword(s):  
Single Crystals ◽  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

Probing Layer Number and Stacking Order of Few-Layer Graphene by Raman Spectroscopy

Small ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 195-200 ◽  
Author(s):  
Yufeng Hao ◽  
Yingying Wang ◽  
Lei Wang ◽  
Zhenhua Ni ◽  
Ziqian Wang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

Thermal Conductivity Reduction in Few-Layer Graphene

2011 ◽  
Author(s):  
Dhruv Singh ◽  
Jayathi Y. Murthy ◽  
Timothy S. Fisher
Keyword(s):  
Thermal Conductivity ◽  
Weak Coupling ◽  
Phonon Scattering ◽  
Single Layer ◽  
Acoustic Mode ◽  
Single Layer Graphene ◽  
Boltzmann Transport ◽  
Layer Graphene ◽  
Out Of Plane ◽  
Few Layer Graphene

Using the linearized Boltzmann transport equation and perturbation theory, we analyze the reduction in the intrinsic thermal conductivity of few-layer graphene sheets accounting for all possible three-phonon scattering events. Even with weak coupling between layers, a significant reduction in the thermal conductivity of the out-of-plane acoustic modes is apparent. The main effect of this weak coupling is to open many new three-phonon scattering channels that are otherwise absent in graphene. The highly restrictive selection rule that leads to a high thermal conductivity of ZA phonons in single-layer graphene is only weakly broken with the addition of multiple layers, and ZA phonons still dominate thermal conductivity. We also find that the decrease in thermal conductivity is mainly caused by decreased contributions of the higher-order overtones of the fundamental out-of-plane acoustic mode. Moreover, the extent of reduction is largest when going from single to bilayer graphene and saturates for four layers. The results compare remarkably well over the entire temperature range with measurements of of graphene and graphite.

scholarly journals Multi-scale investigation of interface properties, stacking order and decoupling of few layer graphene on C-face 4H-SiC

Carbon ◽  
2017 ◽  
Vol 116 ◽  
pp. 722-732 ◽  
Author(s):  
C. Bouhafs ◽  
A.A. Zakharov ◽  
I.G. Ivanov ◽  
F. Giannazzo ◽  
J. Eriksson ◽  
...  
Keyword(s):  
Interface Properties ◽  
Multi Scale ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

A study of the growth-time effect on graphene layer number based on a Cu–Ni bilayer catalyst system

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23956-23960 ◽  
Author(s):  
Tao Wu ◽  
Zhiduo Liu ◽  
Guoxin Chen ◽  
Dan Dai ◽  
Hongyan Sun ◽  
...  
Keyword(s):  
Graphene Layer ◽  
Catalyst System ◽  
Bilayer Graphene ◽  
Time Effect ◽  
Growth Time ◽  
Synergic Effect ◽  
Layer Number ◽  
Layer Graphene ◽  
System P ◽  
Few Layer Graphene

Graphene layer number is controlled by changing Cu–Ni ratio and growth time. Single- and few-layer graphene are formed separately on Cu- and Ni-rich catalysts. The growth of bilayer graphene is attributed to the synergic effect of Cu and Ni (1 : 1).

scholarly journals Imaging Stacking Order in Few-Layer Graphene

Nano Letters ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 164-169 ◽  
Author(s):  
Chun Hung Lui ◽  
Zhiqiang Li ◽  
Zheyuan Chen ◽  
Paul V. Klimov ◽  
Louis E. Brus ◽  
...  
Keyword(s):  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene
Sign in / Sign up

Export Citation Format

Share Document