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High-temperature superconductors (HTS) are finding use as high - current wires for potential application in power devices. The dependence of their basal-plane critical current properties on orientation in a magnetic field can pose important…

Superconductivity · Physics 2009-11-13 Y. L. Zuev , D. K. Christen , S. H. Wee , A. Goyal , S. W. Cook

Nonlinear heat transfer can be exploited to reveal novel transport phenomena and thus enhance peo-ple's ability to manipulate heat flux at will. However, there hasn't been a mature discipline called nonlinear thermotics like its counterpart…

Applied Physics · Physics 2022-10-04 Gaole Dai

Diffusion is one of the most ubiquitous transport phenomena in nature. Experimentally, it can be tracked by following point spreading in space and time. Here, we introduce a spatiotemporal pump-probe microscopy technique that exploits the…

A stochastic energetics framework is applied to examine how periodically shifting the frequency of a time-dependent oscillating temperature gradient affects heat transport in a nanoscale molecular model. We specifically examine the effects…

Mesoscale and Nanoscale Physics · Physics 2025-01-23 Renai Chen , Galen T. Craven

A time-distance measurement technique is derived to isolate phase travel time anisotropy caused by subsurface horizontal magnetic fields, and a method which uses the measured anisotropy to estimate the field's orientation is also derived. A…

Solar and Stellar Astrophysics · Physics 2022-05-11 John T. Stefan , Alexander G. Kosovichev

Understanding the microscopic thermal effects of the hydrogel is important for its application in diverse fields, including thermal-related studies in tissue engineering and thermal management for flexible electronic devices. In recent…

Tailoring thermal properties with nanostructured materials can be of vital importance for many applications. Generally classical phonon size effects are employed to reduce the thermal conductivity, where strong phonon scattering by…

Applied Physics · Physics 2019-10-14 Yue Xiao , Qiyu Chen , Dengke Ma , Nuo Yang , Qing Hao

State-of-the-art techniques like dual-frequency Time-Domain Thermoreflectance (TDTR) and Frequency-Domain Thermoreflectance (FDTR) offer superb capability for simultaneous measurements of thermal conductivity and heat capacity with a…

Applied Physics · Physics 2025-04-22 Tao Chen , Shangzhi Song , Yang Shen , Kexin Zhang , Puqing Jiang

Efficient ab initio computational methods for the calculation of thermoelectric transport properties of materials are of great avail for energy harvesting technologies. The BoltzTraP code has been largely used to efficiently calculate…

We present a new concept of scanning thermal nanoprobe that utilizes the extreme thermal conductance of a carbon nanotube (CNT) to channel heat between the probe and the sample. The integration of CNT in scanning thermal microscopy (SThM)…

Mesoscale and Nanoscale Physics · Physics 2013-05-28 Peter D. Tovee , Manuel E. Pumarol , Mark C. Rosamond , Robert Jones , Michael C. Petty , Dagou A. Zeze , Oleg V. Kolosov

The next generation of ultra-low-noise cryogenic detectors for space science applications require continued exploration of materials characteristics at low temperatures. The low noise and good energy sensitivity of current Transition Edge…

Mesoscale and Nanoscale Physics · Physics 2011-02-01 D. J. Goldie , D. M. Glowacka , K. Rostem† , S. Withington

The thermal transport properties of porous silicon and nano-hybrid "porous silicon/water" systems are presented here. The thermal conductivity was evaluated with equilibrium molecular dynamics technique for porous systems made of spherical…

Mesoscale and Nanoscale Physics · Physics 2020-12-03 Mykola Isaiev , Xiaorui Wang , Konstantinos Termentzidis , David Lacroix

In-plane thermal conductivity of the thermoelectric layered cobalt oxides has been measured using the Harman method, in which thermal conductivity is obtained from temperature gradient induced by applied current. We have found that the…

Materials Science · Physics 2009-11-10 A. Satake , H. Tanaka , T. Ohkawa , T. Fujii , I. Terasaki

In this opinion piece, we discuss recent advances in experimental methods for characterizing phase change heat transfer. We begin with a survey of techniques for high-resolution measurements of temperature and heat flux at the solid surface…

Mesoscale and Nanoscale Physics · Physics 2014-08-04 Jacopo Buongiorno , David G. Cahill , Carlos H. Hidrovo , Saeed Moghaddam , Aaron J. Schmidt , Li Shi

We demonstrate that recent advances in nanoscale thermal transport and temperature manipulation can be brought to bear on the problem of tailoring thermal radiation from compact emitters. We show that wavelength-scale composite bodies…

Mesoscale and Nanoscale Physics · Physics 2016-03-29 Weiliang Jin , Athanasios G. Polimeridis , Alejandro W. Rodriguez

Heat conduction in a random packing of hard spheres is studied by nonequilibrium molecular dynamics simulation. We find a hard-sphere random packing shows higher thermal conductivity than a crystalline packing with same packing fraction.…

Statistical Mechanics · Physics 2010-12-15 Shigenori Matsumoto , Tomoaki Nogawa , Takashi Shimada , Nobuyasu Ito

Understanding thermal transport from nanoscale heat sources is important for a fundamental description of energy flow in materials, as well as for many technological applications including thermal management in nanoelectronics,…

Based on a simple model, we theoretically show that asymmetric transportation is possible in nanoscale systems experiencing thermal noise without the presence of external fluctuations. The key to this theoretical advance is that the…

Statistical Mechanics · Physics 2013-07-30 Rongzheng Wan , Jun Hu , Haiping Fang

The photoacoustic method with piezoelectric detection for the simultaneous evaluation of the thermophysical properties is proposed. The approach is based on the settling of an additional heat sink for redistribution of heat fluxes deposited…

Mesoscale and Nanoscale Physics · Physics 2020-12-03 K. Dubyk , T. Nychyporuk , V. Lysenko , K. Termentzidis , G. Castanet , F. Lemoine , D. Lacroix , Mykola Isaiev

The accurate interpretation of experiments with matter at extreme densities and pressures is a notoriously difficult challenge. In a recent work [T.~Dornheim et al., Nature Comm. (in print), arXiv:2206.12805], we have introduced a formally…