scholarly journals Enhanced Thermal Transport across Self‐Interfacing van der Waals Contacts in Flexible Thermal Devices

2021 ◽  
pp. 2107023
Author(s):  
Minho Seong ◽  
Insol Hwang ◽  
Seongjin Park ◽  
Hyejin Jang ◽  
Geonjun Choi ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Van Der Waals ◽  
Van Der Waals Contacts

Molecule‐Upgraded van der Waals Contacts for Schottky‐Barrier‐Free Electronics

2021 ◽  
pp. 2104935
Author(s):  
Xiankun Zhang ◽  
Zhuo Kang ◽  
Li Gao ◽  
Baishan Liu ◽  
Huihui Yu ◽  
...  
Keyword(s):  
Schottky Barrier ◽  
Van Der Waals ◽  
Van Der Waals Contacts ◽  
Barrier Free

scholarly journals Temperature and interlayer coupling induced thermal transport across graphene/2D-SiC van der Waals heterostructure

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Md. Sherajul Islam ◽  
Imon Mia ◽  
A. S. M. Jannatul Islam ◽  
Catherine Stampfl ◽  
Jeongwon Park
Keyword(s):  
High Temperatures ◽  
Thermal Transport ◽  
Van Der Waals ◽  
Thermal Conductance ◽  
Interlayer Coupling ◽  
Phonon Modes ◽  
Out Of Plane ◽  
System Temperature ◽  
Non Equilibrium Molecular Dynamics ◽  
Increasing Temperature

AbstractGraphene based two-dimensional (2D) van der Waals (vdW) materials have attracted enormous attention because of their extraordinary physical properties. In this study, we explore the temperature and interlayer coupling induced thermal transport across the graphene/2D-SiC vdW interface using non-equilibrium molecular dynamics and transient pump probe methods. We find that the in-plane thermal conductivity κ deviates slightly from the 1/T law at high temperatures. A tunable κ is found with the variation of the interlayer coupling strength χ. The interlayer thermal resistance R across graphene/2D-SiC interface reaches 2.71 $$\times$$ × 10–7$${\text{Km}}^{2} /{\text{W}}$$ Km 2 / W at room temperature and χ = 1, and it reduces steadily with the elevation of system temperature and χ, demonstrating around 41% and 56% reduction with increasing temperature to 700 K and a χ of 25, respectively. We also elucidate the heat transport mechanism by estimating the in-plane and out-of-plane phonon modes. Higher phonon propagation possibility and Umklapp scattering across the interface at high temperatures and increased χ lead to the significant reduction of R. This work unveils the mechanism of heat transfer and interface thermal conductance engineering across the graphene/2D-SiC vdW heterostructure.

scholarly journals Anisotropic thermal transport in van der Waals layered alloys WSe2(1-x)Te2x

2018 ◽  
Vol 112 (24) ◽  
pp. 241901 ◽  
Author(s):  
Xin Qian ◽  
Puqing Jiang ◽  
Peng Yu ◽  
Xiaokun Gu ◽  
Zheng Liu ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Van Der Waals

scholarly journals Crystal structure of (E)-1-(2-nitrobenzylidene)-2,2-diphenylhydrazine

2014 ◽  
Vol 70 (9) ◽  
pp. o909-o910 ◽  
Author(s):  
Marcos Flores-Alamo ◽  
Ruth Meléndrez-Luévano ◽  
José A. Ortiz Márquez ◽  
Estibaliz Sansinenea Royano ◽  
Blanca M. Cabrera-Vivas
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Title Compound ◽  
Van Der Waals ◽  
Compound C ◽  
Phenyl Rings ◽  
Imine Bond ◽  
Van Der Waals Contacts

The title compound, C19H15N3O2, shows anEconformation of the imine bond. The dihedral angle between the planes of the phenyl rings in the diphenylhydrazine groups is 88.52 (4)°. The 2-nitrobenzene ring shows a torsion angle of 10.17 (8)° with the C=N—N plane. A short intramolecular C—H...O contact occurs. In the crystal, only van der Waals contacts occur between the molecules.

Probing photoelectrical transport in lead halide perovskites with van der Waals contacts

2020 ◽  
Vol 15 (9) ◽  
pp. 768-775 ◽  
Author(s):  
Yiliu Wang ◽  
Zhong Wan ◽  
Qi Qian ◽  
Yuan Liu ◽  
Zhuo Kang ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Halide Perovskites ◽  
Van Der Waals Contacts ◽  
Lead Halide

Proposed mechanical method for switching the spin transport channel in two-dimensional magnetic metal–magnetic semiconductor van der Waals contacts

2020 ◽  
Vol 5 (11) ◽  
pp. 1496-1499
Author(s):  
Pengfei Gao ◽  
Xingxing Li ◽  
Jinlong Yang
Keyword(s):  
Spin Transport ◽  
Van Der Waals ◽  
Magnetic Semiconductor ◽  
Magnetic Coupling ◽  
Two Dimensional ◽  
Mechanical Method ◽  
Transport Channel ◽  
Magnetic Metal ◽  
Semiconductor Contacts ◽  
Van Der Waals Contacts

Controlling the spin transport across two-dimensional magnetic metal–magnetic semiconductor contacts via mechanically regulating the interfacial magnetic coupling.

scholarly journals Crystal structure of (E)-1-(4-chlorophenyl)ethanoneO-dehydroabietyloxime

2014 ◽  
Vol 70 (9) ◽  
pp. o899-o900
Author(s):  
Jian-Qiang Zheng ◽  
Yan-Jie Cui ◽  
Xiao-Ping Rao
Keyword(s):  
Crystal Structure ◽  
Torsion Angle ◽  
Title Compound ◽  
Van Der Waals ◽  
Dehydroabietic Acid ◽  
Compound C ◽  
Ring Junction ◽  
Carbonyl Oxime ◽  
Van Der Waals Contacts

The title compound, C28H34ClNO2{systematic name: (E)-1-(4-chlorophenyl)ethanoneO-[(1R,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carbonyl]oxime}, was synthesized from dehydroabietic acid. In the dehydroabietyl moiety, the central and terminal cyclohexane rings display chair and half-chair conformations, respectively, and atrans-ring junction. The C=N bond is in anEconformation and the C—O—N=C torsion angle is 148.1 (5)°. No directional interactions except van der Waals contacts occur in the crystal structure.

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