Nanographene growing on free-standing monolayer graphene

Carbon ◽  
2019 ◽  
Vol 143 ◽  
pp. 669-677 ◽  
Author(s):  
Yosuke Maehara ◽  
Kenji Yamazaki ◽  
Kazutoshi Gohara
Keyword(s):  
Monolayer Graphene ◽  
Free Standing

Charge neutrality of quasi-free-standing monolayer graphene induced by the intercalated Sn layer

2016 ◽  
Vol 49 (13) ◽  
pp. 135307 ◽  
Author(s):  
Hidong Kim ◽  
Otgonbayar Dugerjav ◽  
Altaibaatar Lkhagvasuren ◽  
Jae M Seo
Keyword(s):  
Monolayer Graphene ◽  
Free Standing ◽  
Charge Neutrality

Quasi-free-standing Monolayer Graphene Formed by Ag Intercalation on a SiC(0001) Surface

2014 ◽  
Vol 64 (11) ◽  
pp. 1059-1063
Author(s):  
Altaibaatar LKHAVASUREN ◽  
Hidong KIM ◽  
Jae M. SEO*
Keyword(s):  
Monolayer Graphene ◽  
Free Standing

Monolayer graphene-supported free-standing PS-b-PMMA thin film with perpendicularly orientated microdomains

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63941-63945 ◽  
Author(s):  
Mei-Ling Wu ◽  
Jing Li ◽  
Li-Jun Wan ◽  
Dong Wang
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Monolayer Graphene ◽  
Free Standing

A facile way to fabricate robust free-standing PS-b-PMMA thin films with perpendicularly orientated microdomains on monolayer graphene is reported.

scholarly journals Noise Analysis of Monolayer Graphene Nanopores

2018 ◽  
Vol 19 (9) ◽  
pp. 2639 ◽  
Author(s):  
Zi-Yin Zhang ◽  
Yun-Sheng Deng ◽  
Hai-Bing Tian ◽  
Han Yan ◽  
Hong-Liang Cui ◽  
...  
Keyword(s):  
Noise Level ◽  
Noise Analysis ◽  
Low Frequency ◽  
Monolayer Graphene ◽  
Frequency Noise ◽  
Membrane Thickness ◽  
Free Standing ◽  
Suspended Graphene ◽  
Noise Characteristics ◽  
Graphene Nanopore

Graphene-based nanopore devices have shown tantalizing potential in single molecule detection for their monoatomic membrane thickness which is roughly equal to the gap between nucleobases. However, high noise level hampers applications of graphene nanopore sensors, especially at low frequencies. In this article, we report on a study of the contribution of suspended graphene area to noise level in full frequency band. Monolayer graphene films are transferred onto SiNx substrates preset with holes in varied diameters and formed self-supported films. After that, the films are perforated with smaller, nanoscale holes. Experimental studies indicate a dependency of low-frequency 1/f noise on the underlying SiNx geometry. The contribution of the suspended graphene area to capacitance which affects the noise level in the high frequency range reveals that the graphene free-standing film area influences noise level over a wide frequency region. In addition, the low-frequency noise demonstrates a weak dependency on salt concentration, in deviation from Hooge’s relation. These findings and attendant analysis provide a systematic understanding of the noise characteristics and can serve as a guide to designing free-standing monolayer graphene nanopore devices.

scholarly journals Correlation between morphology and transport properties of quasi-free-standing monolayer graphene

2014 ◽  
Vol 105 (22) ◽  
pp. 221604 ◽  
Author(s):  
Yuya Murata ◽  
Torge Mashoff ◽  
Makoto Takamura ◽  
Shinichi Tanabe ◽  
Hiroki Hibino ◽  
...  
Keyword(s):  
Transport Properties ◽  
Monolayer Graphene ◽  
Free Standing

scholarly journals Temperature-dependent negative Poisson’s ratio of monolayer graphene: Prediction from molecular dynamics simulations

2019 ◽  
Vol 8 (1) ◽  
pp. 415-421 ◽  
Author(s):  
Yin Fan ◽  
Yang Xiang ◽  
Hui-Shen Shen
Keyword(s):  
Molecular Dynamics ◽  
Graphene Sheet ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Monolayer Graphene ◽  
Pristine Graphene ◽  
Negative Poisson’S Ratio ◽  
Temperature Dependent ◽  
Free Standing ◽  
Negative Poisson's Ratio

Abstract A temperature-dependent intrinsic property of monolayer graphene, the negative Poisson’s ratio (NPR), is investigated in the present study. The classical molecular dynamics (MD) method is employed and the Erhart-Albe hybrid potential, i.e. the combination of the reactive empirical bond order (REBO) and the Tersoff potentials, is used for the graphene sheet in the numerical simulation. In the simulation process, the graphene sheet is assumed to be free standing with in-plane periodical boundary condition and under an ambient temperature up to 1000 K. Our study shows that the graphene NPR is decreased with the increase of temperature. Besides, we also perform the simulation of the graphene negative temperature expansion coefficient (NTEC) as an indirect validation of the present MD model. The characteristics of the nonlinear variations for both the NPR and the NTEC of a pristine graphene sheet are investigated. Our MD results at low temperature (0.1 K) further prove the intrinsic and anisotropic property of NPR for graphene.

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