Results 31 to 40 of about 785 (181)

Junction temperature of CMOS electronics cooled by a Stirling cryocooler

Case Studies in Thermal Engineering, 2023
This case study addresses the practical challenges associated with operating cryo-CMOS electronics. Previous research has been largely confined to impractical liquid cryogen cooling and the few under-reported examples of implementing electric cryocoolers.
Dmitry Smirnov, Federico Martin Ibanez, Henni Ouerdane   +2 more
doaj   +1 more source

Space Cryocooler Developments

Physics Procedia, 2015
AbstractThe need for cryogenic cooling in space has become of increasing importance with time. In many space sciences projects cryogenic detectors are essential for the accomplishment of the scientific objectives. Several other components such as the optics can benefit from a cryogenic cooling which reduces the radiative loading on the detectors.
openaire   +1 more source

Reconfigurable Terahertz Multi‐Harmonic Dual‐Combs

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
Terahertz dual‐comb spectroscopy requires precise control of repetition frequencies. A reconfigurable dual‐comb system is realized on a single self‐detected quantum cascade laser platform, where harmonic order serves as a new tuning parameter. Switching among fundamental and harmonic states enables flexible multi‐heterodyne down‐conversion without ...
Xuhong Ma, Zhiwei Qin, Xianglong Bi, Ziping Li, Wenjian Wan, Binbin Liu, Guibin Liu, Yue Pan, Yanming Lu, Hua Li   +9 more
wiley   +1 more source

Microvibration Suppression for the Survey Camera of CSST

Aerospace
The Survey Camera (SC) is the key instrument of the China Space Station Telescope (CSST), with its imaging performance significantly constrained by microvibrations from internal sources such as the shutter and cryocoolers.
Renkui Jiang, Wei Liang, Libin Wang, Enhai Liu, Xuerui Liu, Yongchao Zhang, Sixian Le, Zhaoyang Li, Hongyu Wang, Tonglei Jiang, Changqing Lin, Shaohua Guan, Weiqi Xu, Haibing Su, Yanqing Zhang, Junfeng Du, Ang Zhang   +16 more
doaj   +1 more source

Unusual Temperature‐Enhanced Bulk Photovoltaic Effect Beyond the Centrosymmetric Phase in CuCrP2S6 van der Waals Crystals

Advanced Functional Materials, Volume 36, Issue 73, 10 September 2026.
Contrary to conventional expectations, the bulk photovoltaic effect in CuCrP2S6 is enhanced rather than suppressed upon transitioning into the crystallographically centrosymmetric phase. Dynamic Cu‐ion disorder creates transient polar states, which substantially amplifies zero‐bias photocurrent (shift‐current) generation, establishing dynamic symmetry ...
Ryoga Murata, Takao Sasagawa
wiley   +1 more source

Study of Gas Distribution Characteristics on VM-PT Cryocooler Operating at Liquid Helium Temperature

Zhileng xuebao, 2017
Vuilleumier gas-coupling pulse tube cryocooler (VM-PT) is a novel kind of cryocooler capable of attaining liquid helium temperature. For investigating on the complex mechanism of gas distribution between two stages, a numerical model of VM-PT cryocooler ...
Zhang Tong, Pan Changzhao, Chen Liubiao, Zhou Yuan, Wang Junjie   +4 more
doaj  

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Systems Design, Fabrication, and Testing of a High-Speed Miniature Motor for Cryogenic Cooler

International Journal of Rotating Machinery, 2009
The long-term storage of liquid hydrogen for space missions is of considerable interest to NASA. To this end, the Reverse Turbo-Brayton Cryocooler (RTBC) is considerably lighter than conventional designs and a potentially viable and attractive solution ...
Dipjyoti Acharya, Lei Zhou, Liping Zheng, Thomas X. Wu, Jay Kapat, Louis Chow, Nagaraj K. Arakere   +6 more
doaj   +1 more source

Compression Losses in Cryocoolers

, 2005
Most of the loss mechanisms in Stirling and Pulse Tube cryocoolers are well documented and are relatively easy to analyze and estimate. One of these losses is related to the irreversible compression of gas in the cylinder, and the magnitude of this loss is such that it has a very significant impact on the overall system efficiency.
Reed, J, Davey, G, Dadd, M, Bailey, P
openaire   +2 more sources

Sustainable Low‐Field Cardiovascular Magnetic Resonance in Changing Healthcare Systems—An Update

NMR in Biomedicine, Volume 39, Issue 7, July 2026.
Low‐field cardiovascular MRI offers a cost‐effective and accessible alternative to conventional high‐field systems. Recent technological advances have improved image quality, safety, and device compatibility, expanding its clinical applications. These developments position low‐field CMR as a scalable solution to improve global cardiovascular imaging ...
Muhammad Umair, Ahmed Marey, Sanjana Murali, Udunna C. Anazodo, Adrienne E. Campbell‐Washburn, Ntobeko A. B. Ntusi, Orlando P. Simonetti, Thoralf Niendorf, Regina Mammen, Sola Adeleke   +9 more
wiley   +1 more source