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MOVING PLATES CREATE NEGATIVE-FREQUENCY PHOTONIC RESONANCE

Blog: May 12, 2023
When in relative motion, plates of a Fabry-Perot interferometer generate a unique resonance with negative frequency if separated by a gap of critical size. We commonly encounter the idea of negative frequencies while analyzing electromagnetic waves and signals, which are often helpful as a...

NEW ANTENNA TECH TO EQUIP CERAMIC COATINGS WITH HEAT RADIATION CONTROL

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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...

Single Photon Driven Quantum Phase Transition

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The temporal dynamics of large quantum systems perturbed weakly by a single excitation can give rise to unique phenomena at the quantum phase boundaries. Here, we develop a time-dependent model to study the temporal dynamics of a single photon interacting with a defect within a large system of...

Latest paper in Nature

News: July 26, 2023
Our recent work on 'Heat-assisted detection and ranging' has been published in Nature . We discuss how Machine perception uses advanced sensors to collect information about the surrounding scene for situational awareness . State-of-the-art machine perception using active sonar, radar and LiDAR to...

Latest Paper in Science Advances

News: January 27, 2023
Our recent work on ‘Observation of nonvanishing optical helicity in thermal radiation from symmetry-broken metasurfaces’ has been published in Science Advances . We uncover a new method for generating spinning thermal radiation in a controlled & efficient manner using metasurfaces. Spinning thermal...

TRAPPING LIGHT THAT DOESN’T BOUNCE OFF TRACK FOR FASTER ELECTRONICS

Blog: May 14, 2023
WEST LAFAYETTE, Ind. — Replacing traditional computer chip components with light-based counterparts will eventually make electronic devices faster due to the wide bandwidth of light. A new protective metamaterial "cladding" prevents light from leaking out of the very curvy pathways it would travel...