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 team of Johns Hopkins engineers has developed a new, more powerful method to observe molecular vibrations, an advance that could have far-reaching implications for early disease detection.
Optics & Photonics
Aug 18, 2025
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In a study published in the Gold Bulletin journal by a group of researchers from the Center for Applied Physics and Advanced Technology (CFATA) and National School of Higher Education (ENES), Leon, both from the National ...
Macquarie University researchers have demonstrated a technique to dramatically narrow the linewidth of a laser beam by a factor of over ten thousand—a discovery that could revolutionize quantum computing, atomic clocks and ...
Optics & Photonics
Jul 14, 2025
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118
Technologies such as biomedical imaging and spectroscopy could be enhanced by a discovery in research that involved several institutions, including the University of Glasgow. Scientists have found that two-photon processes, ...
Optics & Photonics
Jul 7, 2025
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By combining artificial intelligence and sensors that can see beyond visible light, Arkansas researchers have developed a system that exceeds human discernment when it comes to measuring herbicide-induced stress in plants.
Plants & Animals
Jun 18, 2025
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22
How do we know exactly what is happening at a molecular level during extremely fast processes, such as burning during combustion? In less than the blink of an eye, one chemical compound and then another are present in a flame ...
Nanophysics
Jun 17, 2025
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40
Color, as the way light's wavelength is perceived by the human eye, goes beyond a simple aesthetic element, containing important scientific information like a substance's composition or state.
Optics & Photonics
Jun 13, 2025
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A team has developed a powerful new spectroscopic technique that enables real-time tracking of how perovskite nanomaterials change under light. The study is published in the journal Nature Communications.
Nanophysics
Jun 12, 2025
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29
Resonantly tunable quantum cascade lasers (QCLs) are high-performance laser light sources for a wide range of spectroscopy applications in the mid-infrared (MIR) range. Their high brilliance enables minimal measurement times ...
Condensed Matter
Jun 3, 2025
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33
Raman spectroscopy uses scattered light to identify a substance's chemical ingredients and is one of the most widely used scientific methods in space exploration. It is used for lunar exploration to identify volcanic minerals, ...
Space Exploration
May 28, 2025
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