Cathodoluminescence Used to Probe Metamaterials

True-colour cathodoluminescence image taken with the Cameca SX100. Fluorite (blue-violet) is shown associated with calcite (yellow-orange) in a carbonatite from India. Credit: Natural History Museum UK

The phenomenon of cathodoluminescence gave geologists an easy way to identify quartz and other minerals in rock samples. Cathodoluminescence allows a piece of quartz to glow icy blue when put under an electron scanning microscope. Now, scientists have used this phenomenon to probe into nanostructures.

Read more @ SciTechDaily

Quantum Gas Temperature Goes Below Absolute Zero

Energy distribution of atoms in a thermal state. Positive absolute temperatures above, in blue; negative absolute temperatures below, in red. Credit: LMU/MPQ Munich

Physicists have been able to create an atomic gas that can attain a temperature below absolute zero, -273.15˚C. They were able to create this gas using negative-Kelvin materials and new quantum devices.

Read more @ SciTechDaily

Cherenkov Radiation Effect in a Line of Point Charges

Cherenkov Radiation Effect in a Line of Point Charges

A newly published study suggests that the interaction between a surface and a charge packet moving parallel to it can become repulsive above a critical relativistic energy. These findings could potentially impact fundamental electrodynamics, accelerator physics and electron spectroscopy.

Read more @ SciTechDaily

Discovery of Magnetic Field That Can Flip Heat Flow


Scientists discovered a magnetic field that can control the flow of heat from one body to another. It was first predicted 50 years ago, and its effect could someday lead to a new generation of electronic devices that use heat rather than charge to carry information.

Read more @ SciTechDaily

Higgs Duality: Contradictory Results At LHC


The latest data presented by scientists on Higgs boson shows that separate measurements of its properties are showing two slightly different masses.

Read more @ SciTechDaily

Japan Could Host International Linear Collider


As most of the world is still dealing with the worst economic crisis in decades, Japan is currently being considered as the potential host for the International Linear Collider (ILC), a multi-billion-dollar machine that will smash atoms at higher and higher energy levels.

Read more @ SciTechDaily

As Supersymmetry Fails, Physicists Looking for New Models


As the Large Hadron Collider has been unable to find any of the particles suggested by supersymmetry, theoretical particle physicists are trying to change their worldview, away from supersymmetry to theories that could explain the results.

Read more @ SciTechDaily