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We investigated a possibility of application of liquid metal contacts for devices based on thermotunneling. Electric and thermal characteristics of low wetting contact Hg/Si, and high wetting contacts Hg/Cu were determined and compared. We…

Materials Science · Physics 2008-07-22 Avto Tavkhelidze , Zaza Taliashvili , Leri Tsakadze , Larissa Jangidze , Nodari Ushveridze

Superlattices are promising low-dimensional nanomaterials for thermoelectric technology that is capable of directly converting low-grade heat energy to useful electrical power. In this work, the thermal conductivities of GaAs/Ge…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 Roger Jia , Lingping Zeng , Gang Chen , Eugene A. Fitzgerald

Metal mixed polymers are a cheap and effective way to produce flexible metals and superconductors. As part of an on-going effort to learn how to tune the properties of these systems with ion implantation, we present a study of the…

Materials Science · Physics 2009-06-15 Andrew P. Stephenson , Ujjual Divakar , Adam P. Micolich , Paul Meredith , Ben J. Powell

Semiconductors with very low lattice thermal conductivities are highly desired for applications relevant to thermal energy conversion and management, such as thermoelectrics and thermal barrier coatings. Although the crystal structure and…

Materials Science · Physics 2021-07-13 Jiangang He , Yi Xia , Wenwen Lin , Koushik Pal , Yizhou Zhu , Mercouri G. Kanatzidis , Chris Wolverton

Semiconductor nanostructures hold great promise for high-efficiency waste heat recovery exploiting thermoelectric energy conversion, a technological breakthrough that could significantly contribute to providing environmentally friendly…

We study the optical and electrical properties of silver films with a graded thickness obtained through metallic evaporation in vacuum on a tilted substrate to evaluate their use as semitransparent electrical contacts. We measure their…

Many low electron density Drude (LEDD) materials such as transparent conductive oxide or nitrides have recently attracted interest as alternative plasmonic materials and future nonlinear optical materials. However, the rapidly growing…

Optics · Physics 2023-07-11 Subhajit Sarkar , Ieng Wai Un , Yonatan Sivan

Thin films of superconducting V$_3$Si were prepared by means of RF sputtering from a compound V$_3$Si target at room temperature onto sapphire and oxide-coated silicon wafers, followed by rapid thermal processing under secondary vacuum. The…

In this study, the contact resistance of various metals to chemical vapour deposited (CVD) monolayer graphene is investigated. Transfer length method (TLM) structures with varying widths and separation between contacts have been fabricated…

Materials Science · Physics 2022-11-23 Amit Gahoi , Stefan Wagner , Andreas Bablich , Satender Kataria , Vikram Passi , Max C. Lemme

Layered two-dimensional (2D) semiconducting transition metal dichalcogenides (TMD) have been widely isolated, synthesized, and characterized recently. Numerous 2D materials are identified as the potential candidates as channel materials for…

Materials Science · Physics 2014-10-31 Yuchen Du , Lingming Yang , Han Liu , Peide D. Ye

Experimental results for adhesive contacts on substrates coated with elastomeric thin films have recently been obtained by C. Tardivat and L. L\'{e}ger (J. Adhesion Sci. Technol. 15 1055-1078 (2001)) by the so-called JKR test, which…

Materials Science · Physics 2008-02-27 Etienne Barthel

Optical lattices have emerged as ideal simulators for Hubbard models of strongly correlated materials, such as the high-temperature superconducting cuprates. In optical lattice experiments, microscopic parameters such as the interaction…

Quantum Gases · Physics 2011-06-23 D. McKay , B. DeMarco

V$_3$Si thin films are known to be superconducting with transition temperatures up to 15 K, depending on the annealing temperature and the properties of the substrate underneath. Here we investigate the film structural properties with the…

In this paper we investigate the elastic properties of the vortex lattice for a superconducting film of finite thickness. We derive an analytic expression for the compression modulus. The shear modulus is evaluated numerically by using both…

Superconductivity · Physics 2007-05-23 Edson Sardella

As demand rises for flexible electronics, traditionally prepared sintered ceramic sensors must be transformed into fully new sensor materials that can bend and flex in use and integration. Negative temperature coefficient of resistance…

Applied Physics · Physics 2019-12-04 Daniella B. Deutz , Sybrand van der Zwaag , Pim Groen

Half-Heusler alloys such as the (Zr,Hf)NiSn intermetallic compounds are important thermoelectric materials for converting waste heat into electricity. Reduced electrical resistivity at the hot interface between the half-Heusler material and…

Materials Science · Physics 2018-12-19 Catalin D. Spataru , Yuping He , François Léonard

Achieving high thermoelectric performance requires efficient manipulation of thermal conductivity and a fundamental understanding of the microscopic mechanisms of phonon transport in crystalline solids. One of the major challenges in…

Materials Science · Physics 2023-05-18 Jiaoyue Yuan , Yubi Chen , Bolin Liao

Heat transfer in nanocomposite materials has attracted great interest for various applications. Multilayer structures provide an important platform to study interfacial thermal transport and to engineer materials with ultralow thermal…

The temperature dependences of the total, crystal lattice and electronic thermal conductivities were investigated in films of topological insulators p-Bi$_{0.5}$Sb$_{1.5}$Te$_{3}$ and p-Bi$_{2}$Te$_{3}$ formed by discrete and thermal…

Materials Science · Physics 2022-07-12 L N Lukyanova , Yu A Boikov , O A Usov , V A Danilov , I V Makarenko , V N Petrov

We present a study of thin-film molybdenum resistors for NbN electronics operating at cryogenic temperatures. The key step is the 0.5-1.5 keV ion cleaning-activation of NbN before Mo deposition which allows to obtain a high-quality Mo/NbN…

Superconductivity · Physics 2024-06-18 Yu P Korneeva , M A Dryazgov , N V Porokhov , N N Osipov , M I Krasilnikov , A A Korneev , M. A. Tarkhov
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