Results 21 to 30 of about 785 (181)

Optical cryocooling of diamond

Physical Review B, 2017
The cooling of solids by optical means only using anti-Stokes emission has a long history of research and achievements. Such cooling methods have many advantages ranging from no-moving parts or fluids through to operation in vacuum and may have applications to cryosurgery. However achieving large optical cryocooling powers has been difficult to achieve
Kern, M., Jeske, J., Lau, D. M. W., Greentree, A. D., Jelezko, F., Twamley, J.   +5 more
openaire   +3 more sources

Optimization of the intermediate precooling temperatures for the 2 K hybrid cryocooler based on entropy generation analysis

Case Studies in Thermal Engineering
There is an increasing demand for 2 K hybrid cryocoolers, consisting of a multi-stage Stirling-type pulse tube cryocooler (SPTC) coupled with a Joule-Thomson cooler (JTC), due to their critical applications in deep space exploration and quantum ...
Bangjian Zhao, Shihang Ding, Lixi Lu, Zhen Yang, Guoliang Tang, Shijie Liu, Chunlai Li, Guangjun Dong, Jianyu Wang   +8 more
doaj   +1 more source

Investigation of the thermal performance of cryogenic regenerator as a porous structure

Journal of Thermal Engineering, 2016
An efficient cryocooler is one of the essential requirements for cooling of Infrared (IR) sensors to low temperatures in high resolution night vision systems.
Muhammad Shad
doaj   +1 more source

A Comprehensive Review of Fault‐Current Limiter Technologies for Smart and Resilient Power Systems

Energy Science &Engineering, EarlyView.
This review compares superconducting, solid‐state, and hybrid fault‐current limiters (FCLs) for modern alternating current, direct current, and hybrid grids. It shows that optimal FCL selection depends on fault characteristics, network configuration, voltage level, protection coordination, and resilience requirements rather than on a universally ...
Abdelrahman Farghly, Eslam Essam, Hilmy Awad, Samia Abdelfatah, Walid Issa, Abdallah M. Hamada   +5 more
wiley   +1 more source

Health indicator construction and remaining useful life prediction for space Stirling cryocooler

Advances in Mechanical Engineering, 2019
Stirling cryocoolers are widely used to refrigerate significant facilities in military and aerospace applications. However, under the influences of high-frequency piston motion and thermal environment deterioration, the refrigerating performance of ...
Lei Song, Haoran Liang, Wei Teng, Lili Guo   +3 more
doaj   +1 more source

A Scalable Platform for Massively Parallel Superconducting Single‐Photon Detection

Laser &Photonics Reviews, EarlyView.
One hundred independent superconducting nanowire detectors, each with efficiency up to 80.1–98.3%, are integrated into a single compact system operating below 2.1 K. This parallel architecture supports fully connected multi‐user quantum entanglement distribution, while its scalability opens new avenues in optical quantum computing, QKD networks ...
You Xiao, Zhen Wan, Dianpeng Wang, Jianjian Zhu, Huiqin Yu, Shuna Wang, Zhiyun Shu, Chaomeng Ding, Hongxin Xu, Jia Huang, Jiamin Xiong, Xiaoyu Liu, Lingyun Li, Lixing You, Hao Li   +14 more
wiley   +1 more source

Scalable Room‐Temperature Terahertz Graphene Cameras

Small Methods, EarlyView.
ABSTRACT Terahertz (THz) imaging has emerged as a powerful tool for non‐destructive, label‐free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial‐dependent information in a broad range of frequencies, this technique enables the identification of chemical composition ...
Lili Shi, Leonardo Viti, Miriam S. Vitiello   +2 more
wiley   +1 more source

Guarded Hot Cylinder Apparatus for Characterization of Thermal Insulation Systems and Materials at Liquid Hydrogen Temperatures

Energies
As interest in liquid hydrogen (LH2) continues to grow within the energy and mobility sectors, so does the demand for testing capabilities at deep cryogenics temperatures.
Adam Swanger, David Creech, Casimir Van Doorne, Andrew Kelly   +3 more
doaj   +1 more source

An Overview of High‐Temperature Superconducting Cables in DC Systems: Unlocking Potential for High‐Voltage DC Networks

High Voltage, EarlyView.
ABSTRACT This paper provides an overview of high‐temperature superconducting (HTS) cables in DC systems, with a focus on their deployment in high‐voltage DC (HVDC) networks. The assessment of HTS cable properties—such as extremely low electrical resistance, high current‐carrying capacity and a compact geometry—and their comparison with those of ...
Mohammad Hossein Mousavi, Hassan Moradi, Kumars Rouzbehi   +2 more
wiley   +1 more source

Data of cryocooler temperature dynamical response to time-varying power inputs at 4 K

Data in Brief, 2018
Data presented here deal with the measurement of a two-stage Gifford-McMahon cryocooler dynamical thermal response to programmed square wave and sine wave power inputs around 4 K.
Andrea Sosso, Paolo Durandetto
doaj   +1 more source