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Passive radiative cooling drawing the heat energy of objects to the cold outer space through the atmospheric transparent window (8 um - 13 um) is significant for reducing the energy consumption of buildings. Daytime and nighttime radiative…

应用物理 · 物理学 2023-11-01 Xiaojie Liu , Yanpei Tian , Fangqi Chen , Alok Ghanekar , Mauro Antezza , Yi Zheng

Proceeding from the model of a two-dimensional elastic continuum, we describe the characteristic features of thermal expansion of graphene using an approach that goes beyond the quasi-harmonic approximation. The negative value of the…

介观与纳米尺度物理 · 物理学 2018-01-24 Viktor N. Bondarev , Vadym Adamyan , Volodymyr V. Zavalniuk

Efficient heat management and control in optical devices, facilitated by advanced thermo-optic materials, is critical for many applications such as photovoltaics, thermal emitters, mode-locked lasers, and optical switches. Here, we…

光学 · 物理学 2024-06-26 David J. Moss

We use suspended graphene electromechanical resonators to study the variation of resonant frequency as a function of temperature. Measuring the change in frequency resulting from a change in tension, from 300 K to 30 K, allows us to extract…

介观与纳米尺度物理 · 物理学 2010-04-13 Vibhor Singh , Shamashis Sengupta , Hari S. Solanki , Rohan Dhall , Adrien Allain , Sajal Dhara , Prita Pant , Mandar M. Deshmukh

The folding of paper, hide, and woven fabric has been used for millennia to achieve enhanced articulation, curvature, and visual appeal for intrinsically flat, two-dimensional materials. For graphene, an ideal two-dimensional material,…

We show that graphene-dielectric multilayers give rise to an unusual tunability of the Casimir-Lifshitz forces, and allow to easily realize completely different regimes within the same structure. Concerning thermal effects,…

介观与纳米尺度物理 · 物理学 2017-03-27 Chahine Abbas , Brahim Guizal , Mauro Antezza

We review thermal properties of graphene and few-layer graphene, and discuss applications of these materials in thermal management of advanced electronics. The intrinsic thermal conductivity of graphene - among the highest of known…

介观与纳米尺度物理 · 物理学 2015-08-11 Zhong Yan , Denis L. Nika , Alexander A. Balandin

The demand for compact, high-speed and energy-saving circuitry urges higher efficiency of spintronic devices that can offer a viable alternative for the current electronics. The route towards this goal suggests implementing two-dimensional…

介观与纳米尺度物理 · 物理学 2021-05-11 Talieh S. Ghiasi , Alexey A. Kaverzin , Avalon H. Dismukes , Dennis K. de Wal , Xavier Roy , Bart J. van Wees

The resistivity of gated graphene is studied taking into account electron and hole scattering by short- and long-range structural imperfections the characteristics of disorder were taken from the scanning tunneling microscopy data and by…

材料科学 · 物理学 2007-12-29 F. T. Vasko , V. Ryzhii

We present a comprehensive investigation of the low-temperature heat capacity of thermally reduced graphene oxide (trGO) as a function of compaction pressure and annealing temperature. Graphene oxide was synthesized using a modified Hummers…

We investigate the phonon thermal conductance of graphene regarding the graphene sheet as the large-width limit of graphene strips in the ballistic limit. We find that the thermal conductance depends weakly on the direction angle $\theta$…

材料科学 · 物理学 2009-05-22 Jin-Wu Jiang , Jian-Sheng Wang , Baowen Li

In this work, we study the thermal energy transport properties of twin graphene, which has been introduced recently as a new two-dimensional carbon nano structure. The thermal conductivity is investigated using non-equilibrium molecular…

计算物理 · 物理学 2020-12-30 Fatemeh Rezaee , Farrokh Yousefi , Farhad Khoeini

Some years ago we have proposed a thermal mount with electronically variable thermal resistance [1]. In this earlier work the feasibility of such a structure has been demonstrated. Now we intend to realize this mount in a maturated form,…

材料科学 · 物理学 2007-09-13 V. Szekely , G. Mezosi

Low thermal conductance of metal contacts is one of the main challenges in thermal management of nanoscale devices of graphene and other 2D materials. Previous attempts to search for metal contacts with high thermal conductance yielded…

应用物理 · 物理学 2018-12-13 Weidong Zheng , Bin Huang , Hongkun Li , Yee Kan Koh

Accurate measurements and physical understanding of thermal boundary resistance (R) of two-dimensional (2D) materials are imperative for effective thermal management of 2D electronics and photonics. In previous studies, heat dissipation…

应用物理 · 物理学 2022-04-15 Weidong Zheng , Connor J. McClellan , Eric Pop , Yee Kan Koh

Extended from its electromagnetic counterpart, transformation thermodynamics applied to thermal conduction equations can map a virtual geometry into a physical thermal medium, realizing the manipulation of heat flux with almost arbitrarily…

经典物理 · 物理学 2015-06-19 Yichao Liu , Wei Jiang , Sailing He , Yungui Ma

The introduction and control of ferromagnetism in graphene opens up a range of new directions for fundamental and applied studies. Several approaches have been pursued so far, such as introduction of defects, functionalization with adatoms,…

介观与纳米尺度物理 · 物理学 2016-11-04 J. C. Leutenantsmeyer , A. A. Kaverzin , M. Wojtaszek , B. J. van Wees

The thermodynamic and kinetic properties of hydrogen adatoms on graphene are important to the materials and devices based on hydrogenated graphene. Hydrogen dimers on graphene with coverages varying from 0.040 to 0.111 ML (1.0 ML $=…

By using non-equilibrium molecular dynamics simulations(NEMD), the modulation on temperature dependence of thermal conductivity of graphene phononic crystals (GPnCs) are investigated. It is found that the temperature dependence of thermal…

介观与纳米尺度物理 · 物理学 2016-06-22 Shiqian Hu , Meng An , Nuo Yang , Baowen Li

We calculate the linear transverse current current response function for graphene at finite temperature and chemical potential. Within the Random Phase Approximation, we then discuss general aspects of transverse plasmons beyond the local…

介观与纳米尺度物理 · 物理学 2013-12-12 A. Gutiérrez-Rubio , T. Stauber , F. Guinea