Journal ArticleDOI
Phonon thermal conductivity of monolayer MoS2: A comparison with single layer graphene
TLDR
In this paper, the authors investigated the size and edge roughness dependence on thermal conductivity of monolayer MoS2 (MLMoS2) by phonon Boltzmann transport equation combined with relaxation time approximation.Abstract:
We investigate the size and edge roughness dependence on thermal conductivity of monolayer MoS2 (MLMoS2) by phonon Boltzmann transport equation combined with relaxation time approximation. The relative contribution of spectral phonons to thermal conductivity is explored, and we compared the characteristics of phonon transport with those in single layer graphene (SLG), which is a representative two-dimensional material. Quite different from SLG, because of the ultra-short intrinsic phonon mean free path, the thermal conductivity of MLMoS2 ribbons is size and roughness insensitive. The LA phonons have the major contribution to thermal conductivity of MLMoS2, and the ZA phonons in MLMoS2 have high relative contribution to thermal conductivity. The relative contribution to thermal conductivity from both high frequency and low frequency phonons in MLMoS2 is lower than that in SLG. The underlying mechanism of these distinct characteristics results from the different phonon dispersions and anharmonic characteristic between MLMoS2 and SLG.read more
Citations
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Journal ArticleDOI
Thermoelectric properties of single-layered SnSe sheet
Fancy Qian Wang,Fancy Qian Wang,Shunhong Zhang,Shunhong Zhang,Jiabing Yu,Qian Wang,Qian Wang +6 more
TL;DR: Four types of thermoelectric couples are designed by assembling single-layered SnSe sheets with different transport directions and doping types, and it is found that their efficiencies are all above 13%, which are higher than those of thermocouple couples made of commercial bulk Bi2Te3 (7%-8%), suggesting the great potential of single-Layered Sn Se sheets for heat-electricity conversion.
Journal ArticleDOI
Strong Thermal Transport Anisotropy and Strain Modulation in Single-Layer Phosphorene
TL;DR: In this paper, the authors investigated ballistic thermal transport in two-dimensional monolayer phosphorene sheet and found that the thermal conductance anisotropy with the orientation can be tuned by applying strain.
Journal ArticleDOI
Recent progress on graphene-analogous 2D nanomaterials: Properties, modeling and applications
TL;DR: A comprehensive review of recent progress on the properties, modeling investigations and applications of graphene-analogous 2D nanomaterials is provided in this paper, where the main modeling techniques of ab initio calculation and molecular dynamics simulation for the theoretical study of GANOMs are introduced, followed by the detailed discussion on the critical findings for each material.
Journal ArticleDOI
Strong Thermal Transport Anisotropy and Strain Modulation in Single-Layer Phosphorene
TL;DR: In this article, the ballistic thermal transport in single-layer phosphorene was investigated using first-principles calculations and non-equilibrium Green's function method, and it was shown that the thermal conductance anisotropy with the orientation can be tuned by applying strain.
Journal ArticleDOI
Size-dependent phononic thermal transport in low-dimensional nanomaterials
TL;DR: In this article, the authors summarize the state-of-the-art studies on the topic of size-dependent phononic thermal transport in low-dimensional nanomaterials, including both theoretical and experimental reports.
References
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Journal ArticleDOI
Superior Thermal Conductivity of Single-Layer Graphene
Alexander A. Balandin,Suchismita Ghosh,Wenzhong Bao,Irene Calizo,Desalegne Teweldebrhan,Feng Miao,Chun Ning Lau +6 more
TL;DR: The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction and establishes graphene as an excellent material for thermal management.
Journal ArticleDOI
The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets
TL;DR: This Review describes how the tunable electronic structure of TMDs makes them attractive for a variety of applications, as well as electrically active materials in opto-electronics.
Journal ArticleDOI
Extremely high thermal conductivity of graphene: Prospects for thermal management applications in nanoelectronic circuits
Suchismita Ghosh,Irene Calizo,Desalegne Teweldebrhan,Evghenii P. Pokatilov,Denis L. Nika,Alexander A. Balandin,Wenzhong Bao,Feng Miao,Chun Ning Lau +8 more
TL;DR: In this paper, the thermal conductivity of graphene suspended across trenches in Si∕SiO2 wafer was investigated using a noncontact technique based on micro-Raman spectroscopy.
Journal ArticleDOI
Two-Dimensional Phonon Transport in Supported Graphene
Jae Hun Seol,Insun Jo,Arden L. Moore,Lucas Lindsay,Lucas Lindsay,Zachary H. Aitken,Michael T. Pettes,Xuesong Li,Zhen Yao,Rui Huang,David Broido,Natalio Mingo,Rodney S. Ruoff,Li Shi +13 more
TL;DR: It is shown experimentally that κ of monolayer graphene exfoliated on a silicon dioxide support is still as high as about 600 watts per meter per kelvin near room temperature, exceeding those of metals such as copper.
Book
Electrons and Phonons: The Theory of Transport Phenomena in Solids
TL;DR: In this paper, the theory of electrical and thermal conduction in metals, semiconductors, and insulators is written at a level appropriate to graduate students and research workers and assumes some knowledge of wave mechanics in its reader.