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.
यह क्रायोजेनिक्स पर अंग्रेजी में दुनिया भर के प्रकाशनों और पेटेंटों का हमारा नवीनतम चयन है, जिसमें कई वैज्ञानिक ऑनलाइन जर्नल शामिल हैं, जिन्हें क्रायोजेनिक तरल पदार्थ, तरल हीलियम, तरल नाइट्रोजन, क्रायोकूलर, सुपरकंडक्टिविटी, क्रायोजेनिक इन्सुलेशन, क्रायोस्टेट, एडियाबेटिक डीमैग्नेटाइजेशन, क्रायोजेनिक पंप, क्रायोजेनिक वाल्व, क्रायोजेनिक भंडारण, क्रायोजेनिक, क्रायोजेनिक इंजीनियरिंग, क्रायोजेनिक रेफ्रिजरेशन, क्रायोजेनिक वैक्यूम, क्रायोजेनिक द्रवीकरण, क्रायोजेनिक सामग्री और क्रायोजेनिक आसवन पर वर्गीकृत और केंद्रित किया गया है।
Quantum slipstream propulsion system (low-resonance variant)
Patent published on the 2026-10-15 in US under Ref US20260316961 by CLEMENT ROMAN LAVAR [US] (Clement Roman Lavar [us])
Abstract: A propulsion system for space travel harnesses quantum vacuum fluctuations via a Bose-Einstein Condensate (BEC) and Magnetic Coherence Focuser (MCF) helix, amplified by 1 THz resonance to a broadly scalable peak energy range starting at 3-3.5 GW, with no upper limit constrained by design. A configurable array of parabolic emitters, starting with fifteen, projects a spacetime ripple field adjustable from 10 meters upward, achieving speeds starting at 1000-1200 m/s and scalable to higher velocitie[...]
Our summary: The quantum slipstream propulsion system utilizes BEC and MCF to harness quantum vacuum fluctuations. It achieves scalable speeds starting at 1000-1200 m/s with a peak energy range of 3-3.5 GW. The design features adaptive energy throttling and a cryogenic cooling system for precision synchronization in aerospace applications.
Quantum propulsion, Bose-Einstein Condensate, Magnetic Coherence Focuser, Adaptive Energy Throttling
Patent
Asymmetric stem drive gifford-mcmahon (gm) cryocooler
Patent published on the 2026-10-15 in US under Ref US20260318569 by SUMITOMO SHI CRYOGENICS OF AMERICA INC [US] (Dunn Stephen B [us])
Abstract: [0000] The efficiency of a GM expander having a stem drive and a rotary valve is improved by having ports in the valve, to the drive stem and displacer, that open fully when gas flows out at low pressure but can be partially restricted when gas flows in at high pressure. The rotary valve may be a disc type or spool type. Other types are also possible. Restricting the high-pressure flow to the drive stem reduces the speed of the expander as low-pressure gas flows out through the regenerator, thus[...]
Our summary: The Gifford-McMahon cryocooler utilizes an asymmetric stem drive with a rotary valve to enhance efficiency. Ports in the valve allow for optimal gas flow management under varying pressure conditions. This design reduces pressure drops during operation, improving overall performance.
Asymmetric stem drive, Gifford-McMahon cryocooler, rotary valve, efficiency improvement
Patent
Optimization of cooling rate and impedance matching in cryocoolers using machine learning
Patent published on the 2026-10-14 in EP under Ref EP4822270 by DANAHER CRYOGENICS LTD [US] (Danaher Charlie [us], Schiffner Bryan Jeremy [us])
Abstract: A multi-stage cryocooler system incorporated in a cryostat includes a compressor driven at a drive frequency and a cryocooler coupled to the compressor and receiving an oscillatory fluid flow therefrom, the cryocooler comprising first and second stages. A controller configured to train and execute a machine learning algorithm receiving as input parameters characterizing a temperature and pressure within fluid paths of the cryocooler, a current cooling characteristic of the cryocooler or cryostat[...]
Our summary: The study focuses on optimizing cooling rates in cryocoolers using machine learning. A multi-stage cryocooler system is analyzed with a controller that adjusts parameters based on temperature, pressure, and actuator states. The machine learning algorithm enhances cooling characteristics by adapting actuator settings and compressor frequency.
Cryocoolers, Machine Learning, Optimization, Impedance Matching
Patent
Apparatus for vaporizing cryogenic fluids using a bath of heat transfer medium heated by a burner, particularly a submerged combustion vaporizer
Patent published on the 2026-10-14 in EP under Ref EP4822253 by SELAS LINDE GMBH [DE] (Bokker Fokke [de], Ulmer Christoph Sebastian [de], Knaup Manuel [de], Murer Martin [de], Sharma Deepankar Virendra [in])
Abstract: The present invention relates to an apparatus and to a method for evaporating cryogenic fluids, said apparatus comprising a heat exchanger at least partly immersed in a bath of heat transfer medium, the heat exchanger being configured for conducting a cryogenic fluid therethrough, a burner system for combustion of a fuel by means of an oxidizing agent, said burner system comprising at least one fuel supply line and a plurality of oxidizing agent supply lines (101, 113) for supplying the fuel and[...]
Our summary: The invention describes an apparatus for vaporizing cryogenic fluids using a submerged combustion vaporizer. It features a heat exchanger immersed in a heated bath of heat transfer medium and a burner system for fuel combustion. Additionally, it includes a water injector system for enhancing secondary combustion.
vaporization, cryogenic fluids, heat exchanger, combustion chamber
Patent
High aspect ratio dielectric etch with heating and deposition
Patent published on the 2026-10-08 in WO under Ref WO2026212867 by LAM RES CORPORATION [US] (Huang Min [us], Yu Lin [us], Pi Shuang [us], Zhang Wenyu [us], Ozel Taner [us], Wang Mingmei [us], Xu Qing [us])
Abstract: Methods and apparatuses for etching features in a substrate comprising a dielectric material are provided. The method comprises (a) partially etching the features in the dielectric material by exposing the semiconductor substrate to etch conditions comprising an etchant gas at a cryogenic temperature, (b) heating the semiconductor substrate, (c) performing a deposition operation, and repeating (a)-(c) until the features are etched to a final depth[...]
Our summary: The method involves partially etching features in a dielectric material using etchant gas at cryogenic temperatures. It includes heating the semiconductor substrate and performing a deposition operation. This process is repeated until the features reach the desired final depth.
Dielectric etching, Cryogenic temperature, Semiconductor substrate, Deposition operation
Patent
OPMs for studying the developing brain
Published on 2026-10-01 by @MIT
Abstract: AbstractTremendous maturation in brain structure and function, underlying very rapid cognitive development, occurs in the early years of life, yet it has been difficult to obtain reliable measures of brain function over this period. A major challenge has been the difficulty of acquiring reliable neuroimaging data from awake young children, who often struggle to tolerate conventional imaging environments or remain still during scanning. Existing approaches each involves important compromises betw[...]
Our summary: OPMs enhance neuroimaging for studying the developing brain in young children. They provide high spatial and temporal resolution while being movement-tolerant. OPMs promise to improve research inclusivity for underrepresented clinical populations.
Optically Pumped Magnetometers, Neuroimaging, Brain Development, Magnetoencephalography
Publication
A feedback system for a cryogenic container assembly
Patent published on the 2026-10-01 in WO under Ref WO2026207471 by GENH2 CORP [US] (Fesmire James E [us], Williams Martha K [us])
Abstract: A feedback system for a cryogenic container assembly, the feedback system including one or more interior surface temperature elements locatable on or near an interior surface of an inner vessel of the cryogenic container assembly, where the interior surface temperature elements generate electrical output signals proportional to a surface temperature measurement of the interior surface temperature elements. This feedback system allows for intercommunication with the liquid and vapor phases for th[...]
Our summary: The feedback system for a cryogenic container assembly includes temperature elements that measure the interior surface temperature. It facilitates communication with liquid and vapor phases for optimal cryogenic liquid management. The system quantifies heat ingress to calculate the net cold power applied to the container s contents.
feedback system, cryogenic container, temperature elements, heat ingress
Patent
Different Effects of Varying Cryogenic Temperatures on Different Properties of a Biocompatible Mg-10Se Alloy
Published on 2026-02-03 by Jiaqi Chen, Michael Johanes, Manoj Gupta @MDPI
Abstract: Mg has high potential as a base metal for biocompatible metallic implants due to its light weight, biocompatibility, and mechanical properties that are similar to bone. In the present study, Mg-10Se was synthesized via a powder metallurgy method followed by cryogenic treatment (CT). It was found that cryogenic exposure to −20 °C (RF20) resulted in the best combination of damping properties (38.5% and 12.1% gains in attenuation coefficient and damping capacity, respectiv[...]
Our summary: Cryogenic treatment affects the properties of Mg-10Se alloy. RF20 treatment enhances damping properties and compressive yield strength. LN treatment improves ultimate compressive strength and reduces corrosion rate.
Cryogenic treatment, Biocompatible alloys, Mechanical properties, Mg-10Se alloy
Publication
