A time crystal, as originally proposed in 2012, is a new state of matter in which the particles are in continuous oscillatory motion. Time crystals break time-translation symmetry. Discrete time crystals do so by oscillating ...
Rensselaer Polytechnic Institute's Moussa N'Gom, assistant professor of physics, applied physics, and astronomy, has devised a method to make communications between satellites and the ground more effective no matter the weather. ...
Optics & Photonics
Mar 1, 2023
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43
Weyl semimetals are topological materials whose low-energy excitations obey the Weyl equation. In a Weyl semimetal, the conduction and valence bands touch at discrete points in momentum space called Weyl nodes. Weyl nodes ...
Quantum Physics
Jan 5, 2023
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58
There has been significant interest in photonics over the last decade due to their prospects in creating functional devices both for near-infrared (NIR) and mid-infrared (MIR) wavelengths. Optical modulators are crucial photonic ...
Optics & Photonics
Dec 12, 2022
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11
Radiative heat transfer is a ubiquitous physical process in our universe. Any object with a temperature above absolute zero exchanges thermal energy with the environment. In physics, thermal emission originates from electromagnetic ...
Optics & Photonics
Dec 2, 2022
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19
Researchers at Purdue University have discovered new waves with picometer-scale spatial variations of electromagnetic fields that can propagate in semiconductors like silicon. The research team, led by Dr. Zubin Jacob, Elmore ...
Optics & Photonics
Nov 16, 2022
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958
Using holograms created in digital microscopes and interpreted using artificial intelligence (AI), researchers can now follow the lives of microplankton at the individual level for the first time. The method is the result ...
Cell & Microbiology
Nov 1, 2022
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146
The interaction of light with matter lies at the heart of processes in nature and in society. For example, in a solar cell, light is converted to an electrical current, but the efficiency of this conversion process can be ...
Optics & Photonics
Oct 7, 2022
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16
Whispering-gallery-mode (WGM) cavities represent an intriguing platform for intensely enhancing light-matter interaction. It lays the foundations for ultra-low threshold lasers, ultra-sensitive sensing, nonlinear optics and ...
Optics & Photonics
Sep 30, 2022
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9
Korea Advanced Institute of Science and Technology (KAIST) researchers and their collaborators at home and abroad have successfully demonstrated a new platform for guiding the compressed light waves in very thin van der Waals ...
Condensed Matter
Jul 13, 2022
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