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A simple and low cost apparatus has been designed and built to measure the electrical resistivity, ($\rho$), of metal and semiconductors in 300-620 K temperature range. The present design is suitable to do measurement on rectangular bar…

General Physics · Physics 2017-04-14 Saurabh Singh , Sudhir K. Pandey

Thermo-optic microheater is indispensable in silicon photonic devices for smart and reconfigurable photonic networks. Much efforts have been made to improve the metallic microheater performance in the past decades. However, because of the…

We report on an optimized micro-machined thermal flow-rate sensor as part of an autonomous multi-parameter sensing device for water network monitoring. The sensor has been optimized under the following constraints: low power consumption and…

Instrumentation and Detectors · Physics 2018-04-23 Shaun Ferdous , Sreyash Sarkar , Frederic Marty , Patrick Poulichet , William César , E. Nefzaoui , Tarik Bourouina

A resonance-induced change in the resistivity of the surface state electrons (SSE) exposed to the microwave (MW) radiation is observed. The MW frequency corresponds to the transition energy between two lowest Rydberg energy levels. All…

Other Condensed Matter · Physics 2011-02-04 Denis Konstantinov , Hanako Isshiki , Hikota Akimoto , Keiya Shirahama , Yuriy Monarkha , Kimitoshi Kono

We present Silver-epoxy filters combining excellent microwave attenuation with efficient wire thermalization, suitable for low temperature quantum transport experiments. Upon minimizing parasitic capacitances, the attenuation reaches >100…

Mesoscale and Nanoscale Physics · Physics 2015-09-08 C. P. Scheller , S. Heizmann , K. Bedner , D. Giss , M. Meschke , D. M. Zumbühl , J. D. Zimmerman , A. C. Gossard

This paper first reviews non-traditional heat exchanger geometry, laser welding, practical issues with microchannel heat exchangers, and high effectiveness heat exchangers. Existing microchannel heat exchangers have low material costs, but…

Instrumentation and Detectors · Physics 2012-05-31 David C. Denkenberger , Michael J. Brandemuehl , Joshua M. Pearce , John Zhai

We describe a process route to fabricate arrays of Ultra-low-Noise MoAu Transition Edge Sensors (TESs). The low thermal conductance required for space applications is achieved using 200 nm-thick Silicon Nitride (SiNx ) patterned to form…

Instrumentation and Detectors · Physics 2014-01-13 D. M. Glowacka , M. Crane , D. J. Goldie , S. Withington

Surface temperature measurements were performed with a Scanning Thermal Microscope mounted with a thermoresistive wire probe of micrometrSurface temperature measurements were performed with a Scanning Thermal Microscope mounted with a…

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…

Classical Physics · Physics 2015-06-19 Yichao Liu , Wei Jiang , Sailing He , Yungui Ma

Heat dissipation issues are the emerging challenges in the field of flexible electronics. Thermal management of flexible electronics creates a demand for flexible materials with highly anisotropic thermal conductivity, which work as heat…

Mesoscale and Nanoscale Physics · Physics 2016-09-30 Zhe Cheng , Meng Han , Pengyu Yuan , Shen Xu , Baratunde A. Cola , Xinwei Wang

We use LAMMPS to randomly pack hard spheres to simulate the heat exchanger, where the hard spheres represent sintered metal particles in the heat exchanger. We simulated the heat exchanger under different sphere radii and different packing…

Computational Physics · Physics 2022-11-28 Xiaomin Wu , Yi Liao , Jinxin Zhong , Qing Xi , Lifa Zhang , Jun Zhou

We demonstrate improvements to the cooling power of broad bandwidth (10 GHz) microwave attenuators designed for operation at temperatures below 100 mK. By interleaving 9-$\mu$m thick conducting copper heatsinks in between 10-$\mu$m long,…

Applied Physics · Physics 2019-05-01 Jen-Hao Yeh , Rui Zhang , Shavindra Premaratne , Jay LeFebvre , F. C. Wellstood , B. S. Palmer

This work experimentally studies silicon-cored tungsten nanowire selective metamaterial absorber to enhance solar-thermal energy harvesting, simply fabricated by conformally coating a thin tungsten layer onto a commercial silicon nanowire…

Applied Physics · Physics 2020-12-16 Jui-Yung Chang , Sydney Taylor , Ryan McBurney , Xiaoyan Ying , Ganesh Allu , Yu-Bin Chen , Liping Wang

The reported research work presents numerical studies validated by experimental results of a flat micro heat pipe with sintered copper wick structure. The objectives of this project are to produce and demonstrate the efficiency of the…

Other Computer Science · Computer Science 2008-02-22 S. Tzanova , L. Kamenova , Y. Avenas , Ch. Schaeffer

Multi Layer Capacitors MLCs are considered as the most promising refrigerant elements to design and develop electrocaloric cooling devices. Recently, the heat transfer of these MLCs has been considered. However, the heat exchange with the…

Applied Physics · Physics 2021-03-25 Romain Faye , Hervé Strozyk , Brahim Dkhil , Emmanuel Defay

We have developed a new micro-fabricated platform for the measurement of the specific heat of low heat capacity mg-sized metallic samples, such as superconductors, down to temperatures of as low as $10\,\mathrm{mK}$. It addresses…

Instrumentation and Detectors · Physics 2020-03-24 Andreas Reifenberger , Andreas Reiser , Sebastian Kempf , Andreas Fleischmann , Christian Enss

Superconducting radio-frequency (SRF) thin film cavities on copper substrates are employed in several particle accelerators. However, these SRF cavities historically featured a progressive performance degradation with the accelerating field…

Accelerator Physics · Physics 2023-04-28 Antonio Bianchi , Giovanna Vandoni , Walter Venturini Delsolaro

In electrically substituted radiometers, the ultra low noise control of the temperature is required. In this framework, we present results dedicated to the temperature regulation of copper plates, 3 cm diameter and 1 mm thick, using…

Instrumentation and Detectors · Physics 2016-11-18 Bruno Guillet , Didier Robbes , Laurence Mechin

The ESR response from highly metal-semiconductor(M-SC) separated SWCNTs for temperatures T between 0.39 and 200 K is characteristically different for the two systems. The signal originates from defect spins but interaction with free…

Ultrathin microscale resistive thermometers are of key value to many applications. Here we have fabricated a laser machined 50 ${\mu}$m wide and 50 nm thick serpentine Pt thin film sensor capable of sensing temperatures up to 650 ${^\circ}$…

Instrumentation and Detectors · Physics 2019-11-12 Letian Wang , Zeqing Jin , Dongwoo Paeng , Yoonsoo Rho , Jiangyou Long , Matthew Eliceiri , YS. Kim , Costas P. Grigoropoulos
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