Experiments at cryogenic temperatures open new directions in molecular spectroscopy, quantum optics, and solid - state dynamics. (science.sciencemag.org)
However, current implementations of DNP require cryogenic temperatures and long times for achieving high polarization. (qubit-ulm.com)
Conventional approaches to compact hydrogen storage — compressing the gas to up to 10,000 pounds per square inch (psi) or cooling it down to cryogenic temperatures so that it liquefies (around 252 degrees Celsius)-- can attain only about half the energy density needed to fit enough fuel inside something the size of a gas tank. (scientificamerican.com)