Optical response of large scale single layer graphene

2011 ◽  
Vol 98 (7) ◽  
pp. 071905 ◽  
Author(s):  
Chul Lee ◽  
Joo Youn Kim ◽  
Sukang Bae ◽  
Keun Soo Kim ◽  
Byung Hee Hong ◽  
...  
Keyword(s):  
Large Scale ◽  
Single Layer ◽  
Optical Response ◽  
Single Layer Graphene ◽  
Layer Graphene

NONLINEAR RESPONSE INDUCED STRONG ABSORPTANCE OF GRAPHENE IN THE TERAHERTZ REGIME

2010 ◽  
Vol 24 (21) ◽  
pp. 2243-2249 ◽  
Author(s):  
X. G. XU ◽  
J. C. CAO
Keyword(s):  
Nonlinear Optical ◽  
Low Frequency ◽  
Single Layer ◽  
Optical Response ◽  
Optoelectronic Device ◽  
Nonlinear Optical Response ◽  
Single Layer Graphene ◽  
Dirac Fermions ◽  
Layer Graphene ◽  
Fifth Order

We have calculated the fifth-order nonlinear optical response at experimentally relevant field strengths within the model of massless Dirac fermions by coupling the massless Dirac fermions to the time-dependent electric field quantum mechanically. It demonstrates that the fifth-order nonlinear optical response plays an important role in the contribution to the optical conductivity of pristine single-layer graphene in the low frequency part of the terahertz regime. The nonlinear effect can enhance the optical activity of single-layer graphene in the terahertz regime and significantly decreases the transmittance of graphene in the regime of frequencies from 0.1 to 0.5 THz. These properties of graphene may be used for photonic and optoelectronic device in the terahertz regime.

A Platform for Large-Scale Graphene Electronics - CVD Growth of Single-Layer Graphene on CVD-Grown Hexagonal Boron Nitride

2013 ◽  
Vol 25 (19) ◽  
pp. 2746-2752 ◽  
Author(s):  
Min Wang ◽  
Sung Kyu Jang ◽  
Won-Jun Jang ◽  
Minwoo Kim ◽  
Seong-Yong Park ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Cvd Growth

scholarly journals The Effect of Ion Irradiation Density on the Defect of Graphene: A Molecular Dynamics Study

Crystals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 158
Author(s):  
Jinfu Lin ◽  
Shulong Wang ◽  
Hongxia Liu ◽  
Kai Yin ◽  
Lei Wu ◽  
...  
Keyword(s):  
Large Scale ◽  
Direct Action ◽  
Copper Substrate ◽  
Single Layer ◽  
Simulation Software ◽  
Effective Range ◽  
Shielding Effect ◽  
Single Layer Graphene ◽  
Irradiation Effects ◽  
Layer Graphene

This paper analyzes graphene irradiation effects using a molecular dynamic simulation software, large-scale atomic / molecular massively parallel simulator (LAMMPS). We propose a hypothesis for the effective range of incident ions based on simulation results of irradiation effects that were found using a suspended single-layer graphene. This explains the influence mechanism of irradiation density on the degree of material defects. This paper does key research on how copper substrate influences a single- and bi-layer graphene. The results show that for a single-layer graphene (SLG) the substrate increases the effective range of the incident ions. Within a certain range of the irradiation density, the substrate enhances the defect production on graphene in low-energy irradiation (<5 keV). However, due to the shielding effect of the substrate, the overall trend of graphene damage will be reduced. For the bi-layer graphene (BLG), the effect of the indirect action range is more obvious than that of the direct-action range. In the case of low irradiation density, the knock-on atoms of BLG are much less than suspended SLG.

scholarly journals Large-Scale Arrays of Single Layer Graphene Resonators

2010 ◽  
Author(s):  
Paul L. McEuen ◽  
Jeevak M. Parpia ◽  
Harold G. Craighead
Keyword(s):  
Large Scale ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene

Large-Scale Arrays of Single-Layer Graphene Resonators

Nano Letters ◽  
2010 ◽  
Vol 10 (12) ◽  
pp. 4869-4873 ◽  
Author(s):  
Arend M. van der Zande ◽  
Robert A. Barton ◽  
Jonathan S. Alden ◽  
Carlos S. Ruiz-Vargas ◽  
William S. Whitney ◽  
...  
Keyword(s):  
Large Scale ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene

Infrared spectroscopy of large scale single layer graphene on self assembled organic monolayer

2014 ◽  
Vol 104 (4) ◽  
pp. 041904 ◽  
Author(s):  
Nak Woo Kim ◽  
Joo Youn Kim ◽  
Chul Lee ◽  
Sang Jin Kim ◽  
Byung Hee Hong ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Large Scale ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Organic Monolayer ◽  
Layer Graphene ◽  
Self Assembled

Comparative study of electron transfer on various graphene-metallic contacts

2019 ◽  
Vol 33 (31) ◽  
pp. 1950384
Author(s):  
Di Lu ◽  
Yu-E Yang ◽  
Weichun Zhang ◽  
Caixia Wang ◽  
Jining Fang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Layer ◽  
Annealing Treatment ◽  
Single Layer Graphene ◽  
Strain Effect ◽  
Graphene Surface ◽  
Layer Graphene ◽  
Metallic Contacts ◽  
Nonuniform Strain ◽  
Main Factor

We have investigated Raman spectra of the G and 2D lines of a single-layer graphene (SLG) with metallic contacts. The shift of the G and 2D lines is correlated to two different factors. Before performing annealing treatment or annealing under low temperature, the electron transfer on graphene surface is dominated by nonuniform strain effect. As the annealing treatment is enhanced, however, a suitable annealing treatment can eliminate the nonuniform strain effect where the relative work function (WF) between graphene and metal becomes a main factor to determine electronic transfer. Moreover, it is confirmed that the optimized annealing treatment can also decrease effectively the structural defect and induced disorder in graphene due to metallic contacts.

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