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 collaborative project has made a breakthrough in enhancing the speed and resolution of widefield quantum sensing, leading to new opportunities in scientific research and practical applications.
Optics & Photonics
Feb 19, 2024
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Auger electron spectroscopy (AES) is an incredibly useful technique for probing material samples—but current assumptions about the process ignore some of the key time-dependent effects it involves. So far, this has resulted ...
General Physics
Feb 15, 2024
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Supercontinuum (SC) white light (the spectrum stretching from the near ultraviolet to the infrared wavelengths) has advanced ultrafast laser spectroscopy in condensed matter science, biology, physics and chemistry. Compared ...
Optics & Photonics
Feb 8, 2024
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High pressure has revealed surprising physics and created novel states in condensed matter. Exciting examples include near room temperature superconductivity (Tc > 200 K) in high-pressure hydrides such as H3S and LaH10.
Condensed Matter
Feb 2, 2024
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Our understanding of the world relies greatly on our knowledge of its constituent materials and their interactions. Recent advances in materials science technologies have ratcheted up our ability to identify chemical substances ...
Optics & Photonics
Jan 25, 2024
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An international team of researchers have presented new ideas for ultrafast multi-dimensional spectroscopy of strongly correlated solids. Their work is published in Nature Photonics.
Condensed Matter
Jan 24, 2024
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A research team led by Prof. Yang Liangbao from Hefei Institutes of Physical Science, Chinese Academy of Sciences (CAS), has observed the interactions between aromatic molecules and Au surfaces on a single Au nanodimer by ...
Nanomaterials
Jan 19, 2024
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415
Scientists are making significant strides in the development of ultrabroadband white laser sources, covering a wide spectrum from ultraviolet to far infrared. These lasers find applications in diverse fields such as large-scale ...
Optics & Photonics
Jan 16, 2024
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Laser-based absorption spectroscopy is an important method for determining the concentration of gas components in a sample. Modern devices are highly specialized for detecting very specific gases, such as trace gases in the ...
Optics & Photonics
Jan 9, 2024
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Sensors are essential tools for detecting and analyzing trace molecules in a variety of fields, including environmental monitoring, food safety, and public health. However, developing sensors with high enough sensitivity ...
Bio & Medicine
Jan 8, 2024
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