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.

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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.

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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.

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Discovery of Magnetic Field That Can Flip Heat Flow

Josephson-heat-interferometer

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.

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Higgs Duality: Contradictory Results At LHC

ATLAS-higgs-boson-CERN

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

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Japan Could Host International Linear Collider

international-linear-collider-rendering

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.

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As Supersymmetry Fails, Physicists Looking for New Models

LHC-tunnel-SUSY

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.

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