News

Thermal

In High Temperatures, A New Class of Ceramics Controls Heat Radiation

Manufacturers frequently use coatings to protect the structural stability of engines or power generators operating at high temperatures. Ceramic shields, however, have not been able to adequately address a critical, performance-limiting factor: heat radiation. A new ceramic coating from Purdue University acts as a kind of thermal antenna, using light-matter oscillations, or polaritrons, to control the direction and electromagnetic spectrum of thermal radiation.
Read More In High Temperatures, A New Class of Ceramics Controls Heat Radiation
Thermal

New Antenna Tech to Equip Ceramic Coatings with Heat Radiation Control

The gas turbines powering aircraft engines rely on ceramic coatings that ensure structural stability at high temperatures. But these coatings don’t control heat radiation, limiting the performance of the engine. Researchers at Purdue University have engineered ceramic “nanotubes” that behave as thermal antennas, offering control over the spectrum and direction of high-temperature heat radiation.
Read More New Antenna Tech to Equip Ceramic Coatings with Heat Radiation Control
skyrmions

Researchers Propose New Topological Phase of Atomic Matter Hosting ‘Photonic Skyrmions

The field of topology or the study of how surfaces behave in different dimensions has profoundly influenced the current understanding of matter. The prime example is the topological insulator, which conducts electricity only on the surface while being completely insulating inside the bulk. Topological insulators behave like a metal, i.e., silver on the surface, but inside, it would behave like glass. These properties are defined using the conductivity or flow of electrons depicting whether there is a highway or a road-block for their motion. One major driver of future applications for topological insulators is in the field of spin-electronic devices since these electrons spin in unison, all aligned with each other while flowing on the surface.
Read More Researchers Propose New Topological Phase of Atomic Matter Hosting ‘Photonic Skyrmions
SpinLocked

Spinning Light Waves Might be 'Locked' for Photonics Technologies

A newly described property related to the "spin" and momentum of light waves suggests potential practical applications in photonic communications and photonic circuits. Scientists already knew that light waves have an electric field that can rotate as they propagate, which is known as the polarization property of light, and that light waves carry momentum in their direction of motion. In new findings, researchers have discovered a "spin-momentum locking," meaning, for example, light waves that spin in a counterclockwise direction can only move forward, and vice versa.
Read More Spinning Light Waves Might be 'Locked' for Photonics Technologies