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Thermal conductance of metal contacts on transferred graphene (trG) could be significantly reduced from the intrinsic value of similar contacts on as-grown graphene (grG), due to additional resistance by increased roughness, residues,…

材料科学 · 物理学 2016-04-07 Bin Huang , Yee Kan Koh

Atomically thin two dimensional (2D) layered materials have emerged as a new class of material for nanoelectromechanical systems (NEMS) due to their extraordinary mechanical properties and ultralow mass density. Among them, graphene has…

介观与纳米尺度物理 · 物理学 2015-05-28 C. Samanta , P. R. Yasasvi Gangavarapu , A. K. Naik

Coherent wave effects of thermal phonons hold promise of transformative opportunities in thermal transport control but remain largely unexplored due to the small wavelength of thermal phonons, typically below a few nanometers. This small…

材料科学 · 物理学 2019-10-09 Usama Choudhry , Shengying Yue , Bolin Liao

Electronic and dielectric properties of vapor-phase grown MoS_{2} have been investigated in metal/MoS_{2}/silicon capacitor structures by capacitance-voltage and conductancevoltage techniques. Analytical methods confirm the MoS_{2} layered…

材料科学 · 物理学 2019-07-19 M. Belete , S. Kataria , U. Koch , M. Kruth , C. Engelhard , J. Mayer , O. Engström , M. C. Lemme

Graphene has been widely used to construct low-resistance van der Waals (vdW) contacts to other two-dimensional (2D) materials. However, a rise of electron temperature of the graphene under a current flow has not been seriously considered…

介观与纳米尺度物理 · 物理学 2018-07-20 Yohta Sata , Rai Moriya , Naoto Yabuki , Satoru Masubuchi , Tomoki Machida

Graphene has a high intrinsic thermal conductivity and a high electron mobility. The thermal conductivity of graphene can be significantly reduced when different carbon isotopes are mixed, which can enhance the performance of thermoelectric…

介观与纳米尺度物理 · 物理学 2020-05-20 Eric Whiteway , Michael Hilke

The present work refers to a simulation study on nanoconfined polymers in polymer-MoS 2 nanocomposites as a function of MoS 2 -MoS 2 interlayer separation. We indeed apply reverse nonequlibrium molecular dynamics simulations (RNEMD) to…

软凝聚态物质 · 物理学 2021-08-10 Mohammad Reza Gharib-Zahedi , Amin Koochaki , Mohammad Alaghemandi

We directly measure the electronic structure of twisted graphene/MoS2 van der Waals heterostructures, in which both graphene and MoS2 are monolayers. We use cathode lens microscopy and microprobe angle-resolved photoemission spectroscopy…

Increased power density in modern microelectronics has led to thermal management challenges which can cause degradation in performance and reliability. In many high-power electronic devices, the power consumption and heat removal are…

介观与纳米尺度物理 · 物理学 2019-10-01 David B. Brown , Thomas L. Bougher , Xiang Zhang , Pulickel Ajayan , Baratunde A. Cola , Satish Kumar

Two-dimensional (2D) atomic crystals, such as graphene and transition-metal dichalcogenides, have emerged as a new class of materials with remarkable physical properties. In contrast to graphene, monolayer MoS2 is a non-centrosymmetric…

材料科学 · 物理学 2015-06-11 Kin Fai Mak , Keliang He , Changgu Lee , Gwan Hyoung Lee , James Hone , Tony F. Heinz , Jie Shan

Thermal management is an important challenge in modern electronics, avionics, automotive, and energy storage systems. While passive thermal solutions (like heat sinks or heat spreaders) are often used, actively modulating heat flow (e.g.…

Metallenes are atomically thin, nonlayered two-dimensional materials. While they have appealing properties, their isotropic metallic bonding makes their stabilization difficult and presents considerable challenges to their synthesis and…

材料科学 · 物理学 2026-01-09 Mohammad Bagheri , Pekka Koskinen

Nitrogenated holey graphene (NHG), a two-dimensional graphene-derived material with a C2N stoichiometry and evenly distributed holes and nitrogen atoms in its basal plane, has recently been synthesized. We performed first principles…

材料科学 · 物理学 2017-04-06 Bohayra Mortazavi , Obaidur Rahaman , Timon Rabczuk , Luiz Felipe C. Pereira

We have investigated the deterioration of field effect transistors based on twodimensional materials due to irradiation with swift heavy ions. Devices were prepared with exfoliated single layers of MoS2 and graphene, respectively. They were…

Molybdenum disulfide (MoS$_2$) is a promising material for making two-dimensional crystals and flexible electronic and optoelectronic devices at the nanoscale. MoS$_2$ flakes can show high mobilities and have even been integrated in…

材料科学 · 物理学 2015-06-15 Mohamed Boukhicha , Matteo Calandra , Marie-Aude Measson , Ophelie Lancry , Abhay Shukla

Proper design and manufacturing thermal bridges based on molecular junctions at the contact between graphene platelets or other thermally conductive nanoparticles would provide a fascinating way to produce efficient heat transport networks…

材料科学 · 物理学 2017-11-07 Alessandro Di Pierro , Guido Saracco , Alberto Fina

Interlayer rotation in van der Waals (vdW) materials offers great potential for manipulating phonon dynamics and heat flow in advanced electronics with ever higher compactness and power density. However, despite extensive theoretical…

Metals are commonly used as electrostatic gates in devices due to their abundant charge carrier densities that are necessary for efficient charging and discharging. A semiconducting gate can be beneficial for certain fabrication processes,…

Due to its exceptional electronic and thermal properties, graphene is a key material for bolometry, calorimetry, and photon detection. However, despite graphene's relatively simple electronic structure, the physical processes responsible…

We report on heat conduction properties of thermal interface materials with self-aligning "magnetic grapheme" fillers. Graphene enhanced nano-composites were synthesized by an inexpensive and scalable technique based on liquid-phase…

材料科学 · 物理学 2015-10-16 J. Renteria , S. Legedza , R. Salgado , M. P. Balandin , S. Ramirez , M. Saadah , F. Kargar , A. A. Balandin