ADVERTISEMENT

Doctor Advances Cryopreservation in Heart Regeneration and Organ Transplantation

At Harvard Medical School and Massachusetts General Hospital, Dr. Rasha Al-attar’s research is at the forefront of advancing heart regeneration and organ transplantation. Initially focusing on stem cell-derived cardiomyocyte (hPSC-CM) transplantation to repair infarcted heart tissue, Dr. Al-attar faced a significant challenge: while immature hPSC-CMs survive freezing, they often induce...

Pressure Increase Method Marks Significant Advancement in Cryogenic Controls and Safety

Ensuring the integrity of packaging in cryogenic environments is crucial for maintaining product quality and operational safety. Recent advancements in non-destructive leak testing technology underscore significant improvements in cryogenic controls and safety by emphasizing the need for precise and reliable testing methods. Effective leak detection is essential for preserving the...

Tests Show High Temperature Superconducting Magnets Ready for Fusion

In the early hours of September 5, 2021, engineers at MIT’s Plasma Science and Fusion Center (PSFC) achieved a groundbreaking milestone by demonstrating a world-record magnetic field strength of 20 tesla with a new high-temperature superconducting magnet. This breakthrough is crucial for advancing fusion power technology, with the potential to...

Thermionics Laboratory Empowers Precision Nanofabrication, Ultrahigh Vacuum Manipulator for Glancing Low Angle Deposition

What does a leading optics manufacturer do when striving to develop cutting-edge lenses for high-resolution imaging systems? Their quest for flawless optical performance hinges on achieving nanostructured surfaces that minimize light scattering and maximize transmission efficiency. In the intricate world of advanced materials and nanotechnology, achieving precise fabrication techniques is...

What Is the Temperature of Space?

One of the most common questions from students when presented with an introduction to in-space applications of cryogenics is “What temperature is space?” While the askers of this question are usually enthusiastically interested, thinking space to have tactile temperatures just like the playground outside the school, this is actually a...

Beckman Institute Labs Bridge Advanced Imaging and Alzheimer’s Research

The Beckman Institute for Advanced Science and Technology at the University of Illinois Urbana-Champaign has embarked on a life-changing research project to advance the early detection and diagnosis of Alzheimer’s disease. With the support of a $3 million grant from the US National Institute on Aging of the National Institutes...

ADVERTISEMENT

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...

Seeking recommendations for commercial sensors

I would like to measure vibrations in small LHe cryostats. Could anybody recommend commercial sensors which would be suitable for the purpose? I am interested in the frequency range between 1Hz and a couple of KHz, with particular attention to the low frequency side.

Estimating cost of carbon steel, pure helium storage tanks

In order to perform an indicative cost assessment of our helium cryogenic plant (still in the design phase), I need an estimation of the cost of carbon steel room temperature pure helium storage tanks. The storage pressure is 20 bar. Can anyone give me suggestions about how to estimate the...

Supplier of pressure sensor that works down to 4.2 K

In an actual experiment we would like to measure the static pressure in a cryostat in the range between one and four bar. Therefore we are looking for some (more or less) cheap pressure sensors that work in liquid helium in the pressure range up to five bar. Unfortunately all...

Looking for reference/textbook suggestions

Can you suggest some reference textbooks for practical thermodynamics applications in cryogenic fields? I need textbooks with cryogenics calculations and examples, dimensioning procedures, second principle applications in cryogenics, heat load calculations, cryogenic pump application, etc. Do such books exist? Does any similar source of information exist?