How to freeze heat conduction

Physicists have discovered a new effect, which makes it possible to create excellent thermal insulators which conduct electricity. Such materials can be used to convert waste heat into electrical energy.

New insights into magnetic quantum effects in solids

Using a new computational method, an international collaboration has succeeded for the first time in systematically investigating magnetic quantum effects in the well-known 3-D pyrochlore Heisenberg model. The surprising ...

Iron-rich lamellae in a semiconductor

There is often a pronounced symmetry when you look at the lattice of crystals: It doesn't matter where you look—the atoms are uniformly arranged in every direction. This behavior would also be expected of a crystal, which ...

Physicists study complex magnetism in a rare earth compound

Dysprosium germanide (DyGe3) is a silver-white compound that forms refractory oxides that are almost insoluble in water. In a recent study, scientists applied the pressure of eight GPa to obtain polycrystal samples of dysprosium ...

A hydrogen sensor that works at room temperature

Researchers at TU Delft have developed a highly sensitive and versatile hydrogen sensor that works at room temperature. The sensor is made of a thin layer of a material called tungsten trioxide.

The culprit of some GaN defects could be nitrogen

As silicon-based semiconductors reach their performance limits, gallium nitride (GaN) is becoming the next go-to material to advance light-emitting diode (LED) technologies, high-frequency transistors and photovoltaic devices. ...

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