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Navy Buoys Cryogenic Radio Frequency Research

The US Navy Space and Naval Warfare Systems Center Pacific recently awarded contracts that shore up its efforts to develop new cryogenic radio systems. The award covers a broad range of R&D, according to the bid proposal, including signal detection, conditioning, conversion, processing and storage.

Physicists Reach 91 K with Laser Cooling

A group of scientists at the University of New Mexico’s Department of Physics and Astronomy are using lasers to advance optical refrigeration, a technique that reaches cryogenic temperatures without any moving parts.

Chicago Hosts World’s Largest High-Energy Physics Conference

More than 1,300 physicists from around the world will converge in Chicago for the biennial International Conference on High Energy Physics (ICHEP) in August to share new research results, announce new projects and talk about the most intriguing mysteries of the universe. The conference will meet August 3-10 at Chicago's...

Mayo’s New MRI is Compact, Comfortable and Powerful

Mayo Clinic has unveiled a new compact 3T magnetic resonance imaging (MRI) scanner designed specifically to handle scans of the head and small extremities—such as wrists, feet and ankles—that represent around 45 percent of the clinical MRI volume at the clinic.

New Cryo-Coil Improves MRI Performance

A research team has developed a high-temperature superconducting cryo-coil that allows magnetic resonance imaging (MRI) scanners to produce higher resolution images or acquire images in a shorter time than when using conventional coils. The cryo-coil works by boosting the signal-to-noise ratio (SNR)—a measure of the strength of signals carrying useful...

Scientists Map Structure of Virus Linked to Childhood Asthma

The atomic structure of an elusive cold virus linked to severe asthma and respiratory infections in children has been solved by a team of researchers at the University of Wisconsin-Madison and Purdue University. The virus was among the first samples analyzed with a new cryo-electron microscopy system at Purdue designed...

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Joule-Thomson Effect

The Joule-Thomson (JT) effect is a thermodynamic process that occurs when a fluid expands from high pressure to low pressure at constant enthalpy (an isenthalpic process). Such a process can be approximated in the real world by expanding a fluid from high pressure to low pressure across a valve. Under...

Current Leads

One of the challenges of using superconducting magnets is the connection of the magnet to a room temperature power supply. This is accomplished via current leads. The trick is that current leads should ideally have a low heat leak, since they connect room temperature to cryogenic temperature, while at the...

Multilayer Insulation

Multilayer insulation (also referred to as superinsulation) is a key component in the reduction of heat leak to cryogenic systems due to thermal radiation. MLI consists of a series of uncooled reflective surfaces placed in the vacuum space between two surfaces, one warmer than the other. Generally speaking, for ideal...

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...