Strain effect on lattice vibration, heat capacity, and thermal conductivity of graphene

Ma, Fengjie; Zheng, Haibing; Sun, Yue; Du, Yang; Xu, Ke; Chu, Paul K.

doi:10.1063/1.4752010

Cited by 97 publications

(69 citation statements)

References 23 publications

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“…[61,73,74,76,89]. An enhancement of the thermal conductivity of up to 36% for the strained 5-nm armchair or zigzag GNRs was found in the ballistic transport regime [76].…”

Section: Theory Of the Thermal Conductivity Of Graphene And Gnrmentioning

confidence: 88%

“…An enhancement of the thermal conductivity of up to 36% for the strained 5-nm armchair or zigzag GNRs was found in the ballistic transport regime [76]. In the diffusive transport regime, the applied strain enhanced the Umklapp scattering and thermal conductivity diminishes by ~1.4 orders of magnitude at RT in comparison with the unstrained graphene [74]. The authors of Ref.…”

Section: Theory Of the Thermal Conductivity Of Graphene And Gnrmentioning

confidence: 97%

“…The phonon energy spectra have been theoretically investigated using Perdew-Burke-Ernzerhof generalized gradient approximation (GGA) [38][39][40], valence-force-field (VFF) and Born-von Karman models of lattice vibrations [41][42][43][44][45][46], continuum approach [47][48][49], first-order local density approximation [39,50,51], fifth-and fourth-nearest neighbor force constant approaches [40,52] or utilized the Tersoff, Brenner or Lennard-Jones potentials [53][54][55]. The thermal conductivity investigations have been performed within molecular dynamics simulations [56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72], density functional theory [73,74], Green's function method [75,76] and Boltzmann-transport-equation (BTE) approach [31,[41][42][43]…”

Section: Theory Of the Thermal Conductivity Of Graphene And Gnrmentioning

confidence: 99%

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Graphene Thermal Properties: Applications in Thermal Management and Energy Storage

2014

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Abstract:We review the thermal properties of graphene, few-layer graphene and graphene nanoribbons, and discuss practical applications of graphene in thermal management and energy storage. The first part of the review describes the state-of-the-art in the graphene thermal field focusing on recently reported experimental and theoretical data for heat conduction in graphene and graphene nanoribbons. The effects of the sample size, shape, quality, strain distribution, isotope composition, and point-defect concentration are included in the summary. The second part of the review outlines thermal properties of graphene-enhanced phase change materials used in energy storage. It is shown that the use of liquid-phase-exfoliated graphene as filler material in phase change materials is promising for thermal management of high-power-density battery parks. The reported experimental and modeling results indicate that graphene has the potential to outperform metal nanoparticles, carbon nanotubes, and other carbon allotropes as filler in thermal management materials. OPEN ACCESSAppl. Sci. 2014, 4 526

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“…[61,73,74,76,89]. An enhancement of the thermal conductivity of up to 36% for the strained 5-nm armchair or zigzag GNRs was found in the ballistic transport regime [76].…”

Section: Theory Of the Thermal Conductivity Of Graphene And Gnrmentioning

confidence: 88%

Section: Theory Of the Thermal Conductivity Of Graphene And Gnrmentioning

confidence: 97%

Section: Theory Of the Thermal Conductivity Of Graphene And Gnrmentioning

confidence: 99%

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Graphene Thermal Properties: Applications in Thermal Management and Energy Storage

2014

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“…Graphene has high thermal conductivity [49,[114][115][116][117][118][119][120][121][122][123][124], which behaves irregularity with the length in Q2D graphene; in other words, the in-plane thermal conductivity is not constant and increases with increasing sample length [125][126][127][128][129][130][131][132][133]. For 10 nm long graphene, the roomtemperature thermal conductivity from the MD simulation is on the order of 60 W·m −1 ·K −1 [134].…”

Section: Thermal Conductivitymentioning

confidence: 99%

Graphene versus MoS2: A short review

Jiang

2015

Front. Phys.

183

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Graphene and MoS 2 are two well-known quasi two-dimensional materials. This review presents a comparative survey of the complementary lattice dynamical and mechanical properties of graphene and MoS 2 , which facilitates the study of graphene/MoS 2 heterostructures. These hybrid heterostructures are expected to mitigate the negative properties of each individual constituent and have attracted intense academic and industrial research interest.

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“…The reason that the crystallite size decreases lies in that the changes of crystal symmetry and reciprocal lattice are dependent on the strain direction. 27 A general expression defining the crystallite size L a from the intensity ratio I D /I G through any laser line in the visible range is given by the Tuinstra-Koening equation:…”

Section: 26mentioning

confidence: 99%

Surface modification of multilayer graphene using Ga ion irradiation

Wang

Shao

et al. 2015

Journal of Applied Physics

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Articles you may be interested inStructural properties and dielectric function of graphene grown by high-temperature sublimation on 4H-SiC(000-1) J. Appl. Phys. 117, 085701 (2015); 10.1063/1.4908216Investigation of the effect of low energy ion beam irradiation on mono-layer graphene AIP Advances 3, 072120 (2013) The effect of Ga ion irradiation intensity on the surface of multilayer graphene was examined. Using Raman spectroscopy, we determined that the irradiation caused defects in the crystal structure of graphene. The density of defects increased with the increase in dwell times. Furthermore, the strain induced by the irradiation changed the crystallite size and the distance between defects. These defects had the effect of doping the multilayer graphene and increasing its work function. The increase in work function was determined using contact potential difference measurements. The surface morphology of the multilayer graphene changed following irradiation as determined by atomic force microscopy. Additionally, the adhesion between the atomic force microscopy tip and sample increased further indicating that the irradiation had caused surface modification, important for devices that incorporate graphene. V C 2015 AIP Publishing LLC.

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Strain effect on lattice vibration, heat capacity, and thermal conductivity of graphene

Cited by 97 publications

References 23 publications

Graphene Thermal Properties: Applications in Thermal Management and Energy Storage

Graphene Thermal Properties: Applications in Thermal Management and Energy Storage

Graphene versus MoS2: A short review

Surface modification of multilayer graphene using Ga ion irradiation

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