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New method shows electron pairs precede HTS
Using new imaging methods, scientists at Brookhaven National Laboratory have confirmed that electron pairs that carry electrical current emerge above the transition temperature before superconductivity sets in.
Organizations urge Obama to appoint White House Science Advisor
The American Institute of Physics, the American Physical Society and the American Astronomical Society were among 180 organizations that signed letters to President-Elect Barack Obama and Senator John McCain, urging them to appoint a White House Science Advisor by Inauguration Day.
PBS’ Independent Lens to air “The Atom Smashers” on Nov.25
On Tuesday, November 25, 2008 at 10:30 PM CST, PBS's Independent Lens will air a documentary called "The Atom Smashers." The film gives an in-depth look into particle physics, the Fermilab Tevatron, CERN's Large Hadron Collider and the search for the Higgs boson.
Request for Assistance: Cryogenic MEMS Pressure Sensor
I am working on a National Science Foundation grant with researchers from Silicon Valley to develop a new type of MEMS pressure sensor. Given my background in cryogenics I was wondering if it could be adapted to that environment and am exploring research opportunities. Initial thoughts are to develop a...
Professor Haruyama named Chairman of ICEC
Longtime CSA Member Professor Tomiyoshi Haruyama of the Institute of Particle and Nuclear Studies at KEK has been named Chairman of the International Cryogenic Engineering Conference Committee.
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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...
Any suggestions for a company producing "secured" heat exchangers?
I am looking for a company producing “secured” heat exchangers to work at a minimum temperature of -45 C on a cooling system for electronics.
Cryogenic properties of Gallium and Tin?
Any suggestions where to find cryogenic properties of non-lead solder materials like Gallium and Tin?
Investigating use of hydrophobic surfaces in cryogenics
I am a final year Physics Undergraduate at the University of Cambridge (UK). As a part of one of my courses this year, I have been asked to investigate the use of hydrophobic surfaces in cryogenics.