
Cryogenics studies the behavior of materials and systems at temperatures below −150°C, focusing on the production, maintenance, and application of extremely low temperatures. It involves the use of cryogenic fluids such as liquid helium and liquid nitrogen, specialized refrigeration techniques, and insulation methods to achieve and sustain cryogenic conditions. Applications span superconductivity, space technology, medical preservation, and liquefaction of gases. This field integrates thermodynamics, fluid dynamics, and materials science to address phenomena unique to cryogenic environments. Our following collection compiles most recent publications and patents detailing innovations in cryogenic equipment, processes, materials, and instrumentation.
This is our latest selection of worldwide publications and patents in english on Cryogenics, between many scientific online journals, classified and focused on cryogenic fluid, liquid helium, liquid nitrogen, cryocooler, superconductivit, cryogenic insulat, cryostat, adiabatic demagnet, cryogenic pump, cryogenic valves, cryogenic storage, cryogeni, cryogenic engineering, cryogenic refrigeration, cryogenic vacuum, cryogenic liquefaction, cryogenic materials and cryogenic distillation.
Method for the production of a densified liquid oxygen product
Patent published on the 2026-05-28 in WO under Ref WO2026111794 by PRAXAIR TECH INC [US] (Howard Henry [us])
Abstract: A method for the liquefaction and densification of oxygen for use as a fuel in space vehicle launch applications that subcools and densifies a liquid oxygen stream to a temperature at or below 60 K using a liquid refrigerant that has an oxygen concentration in a range of 20% to 77% by mole fraction. The liquid refrigerant preferably comprises a mixture of liquid oxygen with liquid air or a mixture of liquid oxygen with liquid nitrogen with the liquid oxygen, liquid air, and/or liquid nitrogen so[...]
Our summary: This method produces a densified liquid oxygen product for space vehicle fuel. It involves subcooling and densifying oxygen to temperatures at or below 60 K. The process utilizes a liquid refrigerant with an oxygen concentration between 20% and 77% by mole fraction.
liquid oxygen, densification, liquefaction, refrigerant
Patent
Ambient and low temperature interconnect
Patent published on the 2026-05-28 in WO under Ref WO2026112122 by SAMTEC INC [US] (Josephson Andrew [us], Ram Aaron [us], Moss James A [us], Holland Troy B [us], Dabrowski Shane [us])
Abstract: An ambient and low-temperature, cryogenic interconnect and cable assembly can be made from materials that do not create unwanted parasitic heat transfer, particularly at transition temperatures at or around twenty degrees Kelvin. Because these materials are not generally solderable, ways of attaching electrically conductive wires or cable conductors to electrical conductors is also disclosed herein. In some embodiments, a cryogenic interconnect may include a housing, and at least one or more sup[...]
Our summary: The content discusses a cryogenic interconnect designed to minimize unwanted heat transfer at low temperatures. It highlights the use of non-solderable materials for electrical connections. Additionally, it mentions the inclusion of superconducting capable conductors in the assembly.
Cryogenic interconnect, Low temperature, Parasitic heat transfer, Superconducting conductors
Patent
Superconducting magnet and alternating magnetic field generator
Patent published on the 2026-05-28 in WO under Ref WO2026110835 by KYOTO UNIV [JP] (Amemiya Naoyuki [jp])
Abstract: Provided is a superconducting magnet that can be operated with AC in a state where AC loss is reduced. This superconducting magnet includes: a superconducting coil 102 that is housed in a cryostat 101; and a superconducting current transformer 103 that is housed in the cryostat 101 and includes a primary winding 104 connected to an AC power supply 109 and a secondary winding 105 connected to the superconducting coil 102. The superconducting coil 102 and the secondary winding 105 are configured b[...]
Our summary: The superconducting magnet operates with reduced AC loss. It includes a superconducting coil and a current transformer within a cryostat. The coil and transformer are configured using a spirally wound superconducting cable.
superconducting magnet, alternating magnetic field, AC loss reduction, superconducting coil
Patent
A cryogenic heat transfer fluid comprising cis-1 -chloro-3,3,3-trifluoropropene
Patent published on the 2026-05-28 in WO under Ref WO2026111880 by ILLINOIS TOOL WORKS INC [US] (Blair Paul M [us], Ye Zhihong [us], Dressel Alexander A [us])
Abstract: The present disclosure relates generally to azeotropic and non-azeotropic hydrofluoro olefin formulations, particularly formulations including cis-1-Chloro-3,3,3-trifluoropropene, also known as HFO-1233zd(Z), for cryogenic heat transfer.[...]
Our summary: The document discusses a cryogenic heat transfer fluid containing cis-1-chloro-3,3,3-trifluoropropene. It focuses on azeotropic and non-azeotropic hydrofluoro olefin formulations. The formulation is specifically designed for efficient cryogenic heat transfer applications.
cryogenic, heat transfer, fluid, HFO-1233zd(Z)
Patent
Systems and methods for detecting and documenting cryogenic therapy of a patient
Patent published on the 2026-05-28 in US under Ref US20260148842 by KATHERINE BAO SHIAN LEE MD APC [US] (Lee Katherine [us])
Abstract: The present invention is directed to more efficient and effective systems and methods for a medical provider to more efficiently and accurately notate a patient s electronic medical record with documentation of cryotherapy treatment of skin lesions or other abnormalities. The systems and methods uniquely utilize composite imaging of thermal and visible spectra, which can be analyzed to determine treatment areas. This analysis can then be used to update the patient s electronic medical record, pr[...]
Our summary: This invention improves the documentation of cryogenic therapy in patient records. It uses composite imaging of thermal and visible spectra for accurate treatment area analysis. The system aims for automatic updates to electronic medical records.
cryogenic therapy, electronic medical record, composite imaging, treatment documentation
Patent
Ferroelectric asynchronous interposer for plasma-mediated hardware isolation and entropically-bound attestation
Patent published on the 2026-05-28 in US under Ref US20260149558 by TERENNA BRIAN [US] (Terenna Brian [us])
Abstract: [0000] A ferroelectric asynchronous interposer for verifiable hardware isolation is disclosed. The system eliminates analog blindness via an autonomous physical-layer interdiction mechanism within a physically distinct Autonomous Galvanic Power Domain (AGPD) decoupled from a host Power Management IC. Isolation is enforced by a Charge-Integrating Hysteresis Stack (106, 302) comprising four-terminal ferroelectric switches (HfZrO4). State verification is governed by thermodynamic accumulation of ch[...]
Our summary: The system features a ferroelectric asynchronous interposer for hardware isolation that uses a Charge-Integrating Hysteresis Stack. It employs a Variable Impedance Firewall with a Multi-Stage Cascaded Solid-State Plasma element for high isolation. Attestation is achieved through a Truth Layer that generates a Quantum Liveness Witness to prevent replay attacks.
Ferroelectric, Hardware Isolation, Plasma-Mediated, Attestation
Patent
Numerical analysis of superconductivity in quasi-one-dimensional A2Mo3As3 (A = K, Rb, Cs)
Published on 2026-04-07 by Lin Wu, Yating Hu and Xiangang Wan @IOP SCIENCE
Abstract: Recent experiments have discovered superconductivity in the ternary molybdenum pnictide materials A2Mo3As3 (A = K, Rb, Cs). In this work, we investigate the superconducting properties of the A2Mo3As3 family based on an effective five-band Hubbard model and using the fluctuation exchange approximation. By solving the linearized Eliashberg equation for various interaction parameters, we find that the spin-singlet and spin-triplet pairings dominate as the leading pairing symmetries in the weak and [...]
Our summary: This study analyzes superconductivity in A2Mo3As3 materials using a five-band Hubbard model. The research identifies spin-singlet and spin-triplet pairings as dominant pairing symmetries under varying electron interactions. Findings align well with recent experimental observations.
Superconductivity, Quasi-one-dimensional, Hubbard model, Eliashberg equation
Publication
Strong enhancement of p?+?ip and d?+?id topological superconductivity on a center-decorated honeycomb lattice
Published on 2026-03-19 by Kai Cheng, Xin-Hao He, Zhi-Peng Sun, Zhuo-Ran He and Zhong-Bing Huang @IOP SCIENCE
Abstract: Using the constrained-path quantum Monte Carlo method, we investigate the superconducting and charge properties of the extended Hubbard model on a center-decorated honeycomb lattice, which includes nearest-neighbor attraction (V1) and third-nearest-neighbor attraction (V2) between sites on the hexagonal grid. Our simulations show that V1 and V2 act to strongly enhance the triplet p + ip and singlet d + id pairing correlations, respectively. Increasing charge density on the hexagonal grid[...]
Our summary: This study examines the enhancement of p+ip and d+id topological superconductivity on a center-decorated honeycomb lattice using the constrained-path quantum Monte Carlo method. The simulations reveal that nearest-neighbor and third-nearest-neighbor attractions significantly boost pairing correlations while charge density influences the competition among pairing symmetries. Additionally, the findings indicate that site disorder and reduced hopping can suppress dominant pairing symmetries, while V2 increases charge structure factors, suggesting pathways to realize topological superconductivity.
topological superconductivity, honeycomb lattice, quantum Monte Carlo, Hubbard model
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