Spectroscopy is an analytical technique that measures the interaction between electromagnetic radiation (or other energetic probes, such as electrons or ions) and matter as a function of wavelength, frequency, or energy to obtain information about a system’s composition, structure, and dynamics. By monitoring absorption, emission, scattering, or reflection, spectroscopy reveals quantized energy levels associated with electronic, vibrational, and rotational states. Variants such as UV–Vis, infrared, Raman, nuclear magnetic resonance, and X-ray spectroscopy exploit distinct interaction mechanisms and selection rules, enabling determination of molecular identity, chemical environment, bonding characteristics, and in some cases spatial or temporal evolution of materials and biochemical systems.
A research team led by Prof. Hu Bingliang and Prof. Yu Tao from the Xi'an Institute of Optics and Precision Mechanics (XIOPM) of the Chinese Academy of Sciences has developed the physicochemical-informed spectral Transformer ...
Environment
Apr 9, 2025
0
36
Almost a decade ago, Harvard engineers unveiled the world's first visible-spectrum metasurfaces—ultra-thin, flat devices patterned with nanoscale structures that could precisely control the behavior of light. A powerful alternative ...
Nanophysics
Apr 1, 2025
0
125
Deep ultraviolet (DUV) lasers, known for their high photon energy and short wavelengths, are essential in various fields such as semiconductor lithography, high-resolution spectroscopy, precision material processing, and ...
Optics & Photonics
Mar 21, 2025
0
256
A team led by a member of Tokyo Metropolitan University has made advances in the search for dark matter, observing galaxies using new spectrographic technology and the Magellan Clay Telescope. With a mere four hours of observations, ...
Astronomy
Mar 3, 2025
2
141
Expert sommeliers can take a whiff of a glass of wine and tell you a lot about what's in your pinot noir or cabernet sauvignon. A team of physicists at CU Boulder and the National Institute of Standards and Technology (NIST) ...
Optics & Photonics
Feb 19, 2025
0
647
For the first time, researchers have been able to measure the quantum state of electrons ejected from atoms that have absorbed high-energy light pulses. This is thanks to a new measurement technique developed by researchers ...
Optics & Photonics
Feb 12, 2025
0
96
An international team of engineers and physicists have found a way to use quantum light to improve the performance of cutting-edge spectroscopy.
Optics & Photonics
Feb 3, 2025
0
79
The physical interaction between two or more systems, also known as coupling, can give rise to unique and unexpected effects. In the field of optics, coupled light sources (e.g., lasers) can influence each other, producing ...
Ultrawide-bandgap semiconductors—such as diamond—are promising for next-generation electronics due to a larger energy gap between the valence and conduction bands, allowing them to handle higher voltages, operate at higher ...
Nanophysics
Jan 24, 2025
0
159
For the first time ever, scientists have used a technique called "quantum squeezing" to improve the gas sensing performance of devices known as optical frequency comb lasers. These ultra-precise sensors are like fingerprint ...
Optics & Photonics
Jan 16, 2025
0
230
