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A differential, membrane-based nanocalorimeter for general specific heat studies of very small samples, ranging from 0.5 mg to sub-{\mu}g in mass, is described. The calorimeter operates over the temperature range from above room temperature…

仪器与探测器 · 物理学 2012-08-20 S. Tagliati , V. M. Krasnov , A. Rydh

We address the heat flow study starting from microscopic models of matter: we develop an approach and investigate some anharmonic graded mass crystals, with weak interparticle interactions. We calculate the thermal conductivity, and show…

材料科学 · 物理学 2015-05-27 Emmanuel Pereira

Thermal wave crystals based on the dual-phase-lag model are investigated in this paper by both theoretical analysis and numerical simulation to control the non-Fourier heat conduction process. The transfer matrix method is used to calculate…

应用物理 · 物理学 2019-11-22 Zheng-Yang Li , Tian-Xue Ma , A-Li Chen , Yue-Sheng Wang , Chuanzeng Zhang

The thermal boundary resistance (Kapitza resistance) of (001) twist grain boundaries in silicon nanowires depends on the mismatch angle. This dependence is systematically investigated by means of nonequilibrium molecular dynamics…

介观与纳米尺度物理 · 物理学 2017-01-26 J. K. Bohrer , K. Schröer , L. Brendel , D. E. Wolf

Thermal nonreciprocity plays a vital role in chip heat dissipation, energy-saving design, and high-temperature hyperthermia, typically realized through the use of advanced metamaterials with nonlinear, advective, spatiotemporal, or gradient…

应用物理 · 物理学 2024-10-28 Min Lei , Peng Jin , Yuhong Zhou , Ying Li , Liujun Xu , Jiping Huang

Resistive RAM (RRAM) devices are candidates for neuromorphic computing devices in which the functionality lies in the formation and reversible rupture and gap-closing of conducting filaments in insulating layers. To explore the thermal…

介观与纳米尺度物理 · 物理学 2025-01-31 Nele Harnack , Sophie Rodehutskors , Bernd Gotsmann

We study the thermal equilibrium and stability of isobaric, spherical structures having a radiation source located at its center. The thermal conduction coefficient, external heating and cooling rates are represented as power laws of the…

天体物理学 · 物理学 2009-06-23 Nestor Sanchez , Eugenio Lopez

Measuring thermodynamic quantities can be easy or not, depending on the system that is being studied. For a macroscopic object, measuring temperatures can be as simple as measuring how much a column of mercury rises when in contact with the…

量子物理 · 物理学 2015-09-15 O. P. de Sá Neto , M. C. de Oliveira , G. J. Milburn

We revisit the electromagnetic problem of wave incidence upon a uniform, dissipative dielectric slab of finite thickness. While this problem is easily solved via interface field continuity, we treat it under the viewpoint of radiative…

经典物理 · 物理学 2018-07-17 J. A. Grzesik

Features of thermal transport in multilayered porous silicon nanostructures are considered. Such nanostructures were fabricated by electrochemical etching of monocrystalline Si substrates by applying periodically changed current density.…

We study the interplay of conductive and radiative heat transfer (RHT) in planar geometries and predict that temperature gradients induced by radiation can play a significant role on the behavior of RHT with respect to gap sizes, depending…

介观与纳米尺度物理 · 物理学 2016-09-28 Riccardo Messina , Weiliang Jin , Alejandro W. Rodriguez

Estimation of thermal contact resistances between cylinders can be achieved using heating on the cross sections by a laser spot and measurement of the temperature response by IR thermography. This type of measurement makes it possible to…

医学物理 · 物理学 2025-11-25 Thomas Lahens , Alain Sommier , Marie-Marthe Groz , Jean-Christophe Batsale

We theoretically study the properties of thermal conductance in a normal-insulator-superconductor junction of silicene for both thin and thick barrier limit. We show that while thermal conductance displays the conventional exponential…

介观与纳米尺度物理 · 物理学 2016-11-02 Ganesh C. Paul , Surajit Sarkar , Arijit Saha

We report the realization of an ultra-efficient low-temperature hybrid heat current rectifier, thermal counterpart of the well-known electric diode. Our design is based on a tunnel junction between two different elements: a normal metal and…

介观与纳米尺度物理 · 物理学 2015-04-13 M. J. Martínez-Pérez , A. Fornieri , F. Giazotto

We simulate convection near the solar surface, where the continuum optical depth is of order unity. Hence, to determine the radiative heating and cooling in the energy conservation equation, we must solve the radiative transfer equation…

天体物理学 · 物理学 2007-05-23 Robert Stein , Aake Nordlund

Thermal stability is an important parameter for the operation of the superconducting radio frequency (SRF) cavities used in particle accelerators. The rf power dissipated on the inner surface of the cavities is conducted to the helium bath…

加速器物理 · 物理学 2017-04-05 Pashupati Dhakal , Gianluigi Ciovati , Ganapati Rao Myneni

Small scale renewable energy harvesting is an attractive solution to the growing need for power in remote technological applications. For this purpose, localized thermal gradients on-chip--created via radiative cooling--could be exploited…

Low dimensional systems, nanowires, in particular, have exhibited excellent optical and electronic properties. Understanding the thermal properties in semiconductor nanowires is very important for their applications in their electronic…

We present a thermal rectification device concept based on far-field radiative exchange between two selective emitters. Rectification is achieved due to the fact that one of the selective emitters radiative properties are independent on…

介观与纳米尺度物理 · 物理学 2014-07-14 Elyes Nefzaoui , Jérémie Drevillon , Younès Ezzahri , Karl Joulain

We predict the existence of a thermal bistability in many-body systems out of thermal equilibrium which exchange heat by thermal radiation using insulator-metal transition (IMT) materials. We propose a writing-reading procedure and…

材料科学 · 物理学 2015-06-19 Viacheslav Kubytskyi , Svend-Age Biehs , Philippe Ben-Abdallah