Water Inside Carbon Nanotubes Stays Frozen At Boiling Point

The action of water in carbon tubes at the nanometer scale was a surprise to researchers as well. Water, at sea level, starts to boil at a temperature of 212 degrees Fahrenheit, or 100 degrees Celsius. That much is well known. Scientists have also long known that when water is confined in very small spaces, its boiling and freezing points can change a bit, usually dropping by around 10 C or so. [Read More]

X-rays Shed New Light On Metal-insulator Transition

A team of researchers from Argonne and Lawrence Berkeley national laboratories and the University of Arkansas has made progress in understanding the metal-insulator transition by using the Advanced Photon Source (APS) to study rare-earth crystal family perovskites, including the rare-earth atom compounds nickelates. Nickelates are compounds that contain a central nickel atom bonded to oxygen or oxygen-containing groups and are considered an ideal model for the study of this transition. [Read More]

Hair Ice Mystery Phenomenon Mechanism Found At Last

The origins of the perplexing phenomenon of hair ice have been divulged by a team of German researchers, confirming a 100 yearld old hypothesis. If you’ve never seen or even heard of it, you are not alone. Hair ice is an uncommon kind of ice that grows in fine, silky hairs and looks something like white fluffy taffy. On rotten branches of only specific trees, hair ice forms when the weather conditions are just right, during humid winter nights at air temperature slightly below 0°C. [Read More]

Gravity Waves Detection Helped By Improved Sensors

Work on detecting gravitational waves, first predicted by Albert Einstein nearly 100 years ago, is advancing with researchers boosting the sensitivity of wave detectors. Scientists are aiming to document gravitational waves with the Laser Interferometer Gravitational-Wave Observatories (LIGO) in the United States. The observatories comprise a pair of L-shaped vacuum systems, four kilometres long with mirrors at each end, along which laser beams are fired. Gravitational waves are ripples in the fabric of space-time made by violent cosmic events, such as black hole formations; they were predicted in Einstein’s General Theory of Relativity in 1916. [Read More]

Hunting Dark Energy with Very Slow Neutrons

Gravity resonance spectroscopy is so sensitive that it can now be used to search for Dark Matter and Dark Energy. This low energy, table top alternative to massive particle accelerators takes validity of Newtonian gravity down by five orders of magnitude. It also narrows the potential properties of the forces and particles that may exist beyond it by more than one hundred thousand times. All known existing particles make up only about five per cent of the mass and energy of the universe. [Read More]