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Novel Lenses Enable X-ray Microscopy with Record Resolution

Researchers at DESY have reported the creation of novel lenses that enable X-ray microscopy with record resolution. The new lenses consist of over 10,000 alternating layers of a new material combination—tungsten carbide and silicon carbide—that allowed the team to achieve a focus spot size with a diameter of less than...

ICC20 Accepting Abstracts for 2018 Conference

Abstract submission is now open for the 20th International Cryocooler Conference (ICC20), the premier global gathering on cryocooler technology. The meeting will feature oral and poster presentation sessions, plus CSA's Foundations of Cryocoolers short course.

Physicists Develop Faster Method to Create Bose-Einstein Condensates

MIT physicists have improved the cooling techniques used to cool atoms into Bose-Einstein condensates. The new method is faster than the conventional one and conserves a large fraction of the original atoms.

A New, Cold Window into Electron Behavior

Physicists at MIT and Princeton University have developed a technique that can peer deep beneath the surface of a material to identify the energies and momenta of electrons there.

Linde Lifts Macy’s Thanksgiving Day Parade Balloons High

The iconic Macy’s Thanksgiving Day Parade balloons once again soared above the streets of New York City thanks to helium supplied by Linde North America, Inc. Linde supplied some 300,000 cubic feet of helium to the parade this year, the 23rd consecutive year of its partnership with Macy’s.

Physicists Propose Superfluid Helium Dark Matter Detector

Physicists from Brown University have devised a new strategy for directly detecting dark matter with a tub of superfluid helium. The idea is that dark matter particles passing through the tub should, on very rare occasions, smack into the nucleus of a helium atom.

Latest in Defining Cryogenics

Adiabatic Demagnetization Refrigeration

Reaching temperatures below 1K requires different techniques than the various helium gas cycles found in large scale refrigeration plants and small cryocoolers. One of these techniques is Adiabatic Demagnetization Refrigeration (ADR). This technique takes advantage of the fact that the entropy of paramagnetic materials in a magnetic field is lower than...

Cryogen-Free

A cryogen is any fluid that operates at cryogenic temperatures (below roughly 150K – 120K). Using this definition, helium gas at 40K is a cryogen. Another more restrictive definition is to use cryogen to refer specifically to liquids at cryogenic temperatures. This is generally how it is used in the...

Cryostats and Cryocoolers

A cryostat is any device designed to maintain things (including fluids) at cryogenic temperatures. In general usage, cryostats tend to be passive devices rather than providing active cooling. In this usage, cryostats keep things cold by thermally isolating them from room temperature. This generally is accomplished by a combination of...

Latest in Cryo Central

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...

Latest in Ask the Experts

Information on how the emissivity of the panel changes with air fouling?

I work at a facility with a large thermal vacuum chamber. We are using both nitrogen and helium shrouds.

In search of a calculation for designing a cryostat

I am a final year physics student at the University of Birmingham, and as part of a group I am currently designing a cryostat. One of the calculations I need to make (very soon!) is how much heat will be conducted down the walls. All information I have found so...

Safety of ethylene glycol and pressurized oxygen

We are reviewing the product design of liquid filled differential level gauges and want to insure that they meet the industry requirements. The former license owner had authorized that a fill fluid of ethylene glycol (68%) and distilled water (32%) could be used for oxygen service up to 500 psi....

Heat flux in case of vacuum loss on cryogenic surfaces?

Is there anyone who has information about the heat flux in case of vacuum loss on cryogenic surfaces?

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