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Borophene, an atomically thin, corrugated, crystalline two-dimensional boron sheet, has been recently synthesized. We investigate mechanical properties and lattice thermal conductivity of borophene via reactive molecular dynamics…

Materials Science · Physics 2017-07-05 Bohayra Mortazavi , Minh-Quy Le , Timon Rabczuk , Luiz Felipe C. Pereira

Two-dimensional (2D) structures of boron atoms so called borophene, have recently attracted remarkable attention. In a latest exciting experimental study, a hydrogenated borophene structure was realized. Motivated by this success, we…

We investigate the thermal conductivity in the armchair and zigzag MoS$_{2}$ nanoribbons, by combining the non-equilibrium Green's function approach and the first-principles method. A strong orientation dependence is observed in the thermal…

Materials Science · Physics 2013-07-12 Jin-Wu Jiang , Xiaoying Zhuang , Timon Rabczuk

This work presents the electronic and transport properties of bilayer borophene nanoribbons. In the first part, a four-orbital tight-binding model is derived by fitting the \emph{ab initio} band structure. The transport properties of…

Mesoscale and Nanoscale Physics · Physics 2025-02-18 C. J. Páez-González , C. E. Ardila-Gutiérrez , D. A. Bahamon

In this work, the electronic properties of phosphorene nanoribbons with different width and edge configurations are studied by using density functional theory. It is found that the armchair phosphorene nanoribbons are semiconducting while…

Mesoscale and Nanoscale Physics · Physics 2015-02-24 J. Zhang , H. J. Liu , L. Cheng , J. Wei , J. H. Liang , D. D. Fan , J. Shi , X. F. Tang , Q. J. Zhang

Borophene (two-dimensional boron sheet) is a new type of two-dimensional material, which was recently grown successfully on single crystal Ag substrates. In this paper, we investigate the electronic structure and bonding characteristics of…

Mesoscale and Nanoscale Physics · Physics 2016-06-23 Bo Peng , Hao Zhang , Hezhu Shao , Yuanfeng Xu , Rongjun Zhang , Heyuan Zhu

We investigate the thermal conductivity of plumbene using molecular dynamics simulations, overcoming existing limitations by optimizing the parameters of Tersoff and Stillinger-Weber potentials via artificial neural networks. Our findings…

Materials Science · Physics 2023-11-20 Rafat Mohammadi , Behrad Karimi , John Kieffer , Daniel Hashemi

We combine density-functional theory and the nonequilibrium Green's function method to study the thermal conductance of graphene nanoribbons with armchair and zigzag edges. Zigzag ribbons have higher thermal conductance than armchair…

Mesoscale and Nanoscale Physics · Physics 2011-08-05 Zhen Wah Tan , Jian-Sheng Wang , Chee Kwan Gan

Investigating thermal transport in van der Waals heterostructure is of scientific interest and practical importance for their applications in a broad range. In this work, thermal conductivity of one-dimensional heterostructure consisting of…

Mesoscale and Nanoscale Physics · Physics 2021-01-01 Han Meng , Shigeo Maruyama , Rong Xiang , Nuo Yang

In recent years, two-dimensional boron sheets (borophene) have been experimentally synthesized and theoretically observed as promising conductor or transistor with novel thermal and electronic properties. We first give a general survey of…

Materials Science · Physics 2018-03-16 Dengfeng Li , Ying Chen , Jia He , Qiqi Tang , Chengyong Zhong , Guangqian Ding

We use non-equilibrium molecular dynamics simulations to study the adverse role of defects including isotopic impurities on the thermal conductivity of carbon nanotubes, graphene and graphene nanoribbons. We find that even in structurally…

Materials Science · Physics 2015-06-11 Zacharias G. Fthenakis , David Tománek

We theoretically study the influence of impurity scattering on the electric and thermal transport of borophane layer, a two-dimensional anisotropic Dirac semi-metal with two tilted and anisotropic Dirac cones. In a systematic framework, we…

Mesoscale and Nanoscale Physics · Physics 2019-06-19 Moslem Zare

The thermoelectric properties of MoS2 armchair nanoribbons with different width are studied by using first-principles calculations and Boltzmann transport theory, where the relaxation time is predicted from deformation potential theory. Due…

Mesoscale and Nanoscale Physics · Physics 2015-02-24 D. D. Fan , H. J. Liu , L. Cheng , P. H. Jiang , J. Shi , X. F. Tang

Nanoribbons produced from cutting {\beta}_12-Borophene sheet is investigated by density functional theory. The electronic and magnetic properties of Borophene nanoribbons are studied and found that all considered ribbons are metal which is…

Mesoscale and Nanoscale Physics · Physics 2017-08-11 Sahar Izadi Vishkayi , Meysam Bagheri Tagani

The thermoelectric properties of in plane heterostructures made of Graphene and hexagonal Boron Nitride (BN) have been investigated by means of atomistic simulation. The heterostructures consist in armchair graphene nanoribbons to the sides…

Mesoscale and Nanoscale Physics · Physics 2015-08-19 Van-Truong Tran , Jérôme Saint Martin , Philippe Dollfus

Thermoelectric properties of Graphene Nanoribbons doped by magnetic impurities Fe and Co are carried out in room temperature. We report on a study of the band structure dependent properties such as electrical conductivity, charge of…

Mesoscale and Nanoscale Physics · Physics 2019-03-12 Elham Rahmati

A Stillinger-Weber interatomic potential is parameterized for phosphorene. It well reproduces the crystal structure, cohesive energy and phonon dispersion predicted by first-principles calculations. The thermal conductivity of phosphorene…

Mesoscale and Nanoscale Physics · Physics 2015-10-19 Wen Xu , Liyan Zhu , Yongqing Cai , Gang Zhang , Baowen Li

Recent years witnessed a rapid growth of interest of scientific and engineering communities to thermal properties of materials. Carbon allotropes and derivatives occupy a unique place in terms of their ability to conduct heat. The…

Materials Science · Physics 2015-05-28 Alexander A. Balandin

We have used molecular dynamics to calculate the thermal conductivity of symmetric and asymmetric graphene nanoribbons (GNRs) of several nanometers in size (up to ~4 nm wide and ~10 nm long). For symmetric nanoribbons, the calculated…

Mesoscale and Nanoscale Physics · Physics 2010-08-10 Jiuning Hu , Xiulin Ruan , Yong P. Chen

Polymer nanofibers with high thermal conductivities and outstanding thermal stabilities are highly desirable in heat transfer-critical applications such as thermal management, heat exchangers and energy storage. In this work, we unlock the…

Chemical Physics · Physics 2014-09-12 Teng Zhang , Xufei Wu , Tengfei Luo
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