Light–matter interaction is one of the most basic ways people observe the physical world. While reflection and refraction of light reveal the morphology of matter, inelastic scattering of light, like Raman scattering, encodes ...
Optics & Photonics
Oct 11, 2023
0
5
Using conventional testing techniques, it can be challenging—sometimes impossible—to detect harmful contaminants such as nano-plastics, air pollutants and microbes in living organisms and natural materials. These contaminants ...
Nanophysics
Jul 31, 2023
1
280
Terahertz (THz) emission spectroscopy has emerged as a valuable technique for investigating static physical properties as well as ultrafast dynamics occurring in novel material systems that may remain hidden to other probes.
Optics & Photonics
Jun 1, 2023
0
2
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
0
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
0
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
0
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
0
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
0
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
0
146
