Abstract Cryogenic piston pumps are commonly found in cryogenic systems to pressurize low-temperature liquefied fuels, such as liquified natural gas (LNG) or hydrogen, which then gasified and stored high-pressure vessels. The main challenges be tackled the design of these machines concern low operating temperatures, high discharge pressures, especially need avoid liquid evaporation, this can le...

We report the reduction of the thermal lensing in cryogenic sapphire mirrors, which is planed to be used in the Large scale Cryogenic Gravitational wave Telescope (LCGT) project. We measured three key parameters of sapphire substrate for thermal lensing at cryogenic temperature. They are optical absorption coefficient, thermal conductivity and temperature coefficient of refractive index at cryo...

PDMS micro-sensors coated onto an electrical wire are used to measure dynamic temperature variation at cryogenic range based on optical whispering-gallery mode (WGM) frequency shift principle. We designed a lab cryogenic cell via filling liquid nitrogen to create a stable low temperature down to 95K. The electrical wire is current carrying to simulate a working electrical/electronic component/d...

Abstract The aim of the paper is to present actual state techniques regarding influence cryogenic cooling in turning and milling process. Processing some materials impossible without tool or processed material. Hard-to-cut are increasingly used industry, so new methods these had be researched. Cryogenic most efficient method cool down turning, cutting tools. There a lot that not affected by low...

Cryoprecipitating IgG3 autoantibodies have been shown to play a significant role in the development of murine lupus-like autoimmune syndrome. However, the structural basis of IgG3 cryoprecipitation still remains to be defined. In view of the implication of positively charged amino acid residues present in variable regions in IgG3 cryoglobulin activity, we explored the role of terminal sialic ac...

Cryogenic low noise amplifiers based on high electron mobility transistors (HEMTs) are widely used in applications such as radio astronomy, deep space communications, and quantum computing, the physical mechanisms governing microwave figure therefore of practical interest. In particular, contribution thermal from gate at cryogenic temperatures remains unclear owing to a lack experimental measur...