Results 21 to 30 of about 252,126 (263)

Exciton-polariton Josephson junctions at finite temperatures [PDF]

Scientific Reports, 2017
AbstractWe consider finite temperature effects in a non-standard Bose-Hubbard model for an exciton- polariton Josephson junction (JJ) that is characterised by complicated potential energy landscapes (PEL) consisting of sets of barriers and wells. We show that the transition between thermal activation (classical) and tunneling (quantum) regimes exhibits
M. E. Lebedev, D. A. Dolinina, Kuo-Bin Hong, Tien-Chang Lu, A. V. Kavokin, A. P. Alodjants   +5 more
openaire   +2 more sources

Junction Temperature Measurement in Optically-Controlled Power Mosfet

Proceedings of the 9th International Conference on Photonics, Optics and Laser Technology, 2021
The temperature-dependent optical properties of silicon carbide (SiC), such as refractive index and reflectivity, have been used for a direct monitoring of the junction temperature of a power MOSFET. In particular, the optical response of a 4H-SiC MOSFET-integrated Fabry-Perot cavity to temperature changes has been investigated through parametric ...
Rao S., Mallemace E. D., Cocorullo G., Dehimi L., Della Corte F. G.   +4 more
openaire   +3 more sources

Enhanced Cooling of LED Filament Bulbs Using an Embedded Tri-Needle/Ring Ionic Wind Device

Energies, 2020
Improving the heat dissipation ability for light-emitting diode (LED) filament bulb is very difficult. A tri-needle/ring ionic wind generator was developed to improve the heat dissipation condition of bulbs.
Chunlin Xu, Huai Zheng, Jie Liu, Jingcao Chu, Xiaoliang Zeng, Rong Sun, Sheng Liu   +6 more
doaj   +1 more source

A Hybrid Model of Turn-Off Loss and Turn-Off Time for Junction Temperature Extraction

IEEE Journal of the Electron Devices Society, 2022
Temperature-sensitive electrical parameter (TSEP) approaches are widely employed in the junction temperature (Tj) extraction and prediction of power semiconductor devices.
Lingfeng Shao, Guoqing Xu, Pengbo Li
doaj   +1 more source

Thermoelectricity in atom-sized junctions at room temperatures [PDF]

Scientific Reports, 2013
Atomic and molecular junctions are an emerging class of thermoelectric materials that exploit quantum confinement effects to obtain an enhanced figure of merit. An important feature in such nanoscale systems is that the electron and heat transport become highly sensitive to the atomic configurations.
Makusu Tsutsui, Takanori Morikawa, Akihide Arima, Masateru Taniguchi   +3 more
openaire   +2 more sources

A High-Precision Adaptive Thermal Network Model for Monitoring of Temperature Variations in Insulated Gate Bipolar Transistor (IGBT) Modules

Energies, 2018
This paper proposes a novel method for optimizing the Cauer-type thermal network model considering both the temperature influence on the extraction of parameters and the errors caused by the physical structure.
Ning An, Mingxing Du, Zhen Hu, Kexin Wei
doaj   +1 more source

High-temperature anomaly of the conductance of a tunnel junction

Physical Review B, 1997
4 pages, 2 ...
Göppert, Georg, Wang, Xiaohui, Grabert, Hermann   +2 more
openaire   +3 more sources

Investigation of Emissivity and Junction Contacting Status of C-Type Thermocouples Using Rich Hencken Flames

Energies
C-type thermocouples are widely used to measure rich combustions; however, the measured temperature, i.e., the thermocouple junction temperature, is not equal to the gas temperature.
Linqing Zhang, Yingrong Lu, Qinghuang Huang, Peiyong Wang, Juntao Chang   +4 more
doaj   +1 more source

Research on Junction Temperature Smooth Control of SiC MOSFET Based on Body Diode Conduction Loss Adjustment

Energies
In a converter of actual working condition, the change in the current and voltage of the power device will cause the junction temperature to fluctuate greatly. This device is subjected to high thermal stress due to the change in the junction temperature.
Junke Wu, Yunpeng Wei, Yuntao Wu, Zhou Wang, Xingyu Li, Xiangnan Wei   +5 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source