High-quality, single-crystal, ultra-cold solid helium exhibits supersolid behavior, suggesting that this frictionless solid flow is not a consequence of defects and grain boundaries in poor-quality, ...

Solid helium represents a unique quantum solid whose low temperature properties challenge conventional understanding of condensed matter. Its remarkable behaviour, including supersolidity and quantum ...

NASA's moon launch faces delays as helium flow issues disrupt the mission. Scheduled for March 6, the historic flight is now uncertain following helium flow interruptions. Engineers may need to ...

This is a preview. Log in through your library . Abstract Supersolidity, the appearance of zero-viscosity flow in solids, was first indicated in helium-4 torsional oscillator (TO) experiments. In this ...

In 2004 researchers reported the first clear evidence for superfluidity in solid helium-4. However, Matthew Chalmers describes recent experimental and theoretical work that has brought the very ...

Evidence is mounting for the existence of a strange new state of matter called a "supersolid", in which a small fraction of ultracold helium decouples from the rest of the solid and flows effortlessly ...

Despatches from Holland related that a Professor Keesom had solidified that rare and undemonstrative gas, helium, by a process not too costly or laborious to be adopted industrially. By some ingenious ...