spectroscopy
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Physics
Photoacoustic spectroscopy approach enables real-time detection of low gas concentrations
A new method for detecting and identifying gases at very low concentrations in real time adds coherent control to quartz-enhanced photoacoustic spectroscopy, which uses a quartz tuning fork to detect gas absorption. Credit: Florian Sterl, Sterltech Optics GmbH Researchers have developed a new method to quickly detect and identify gases at very low concentrations. This new approach, called coherently controlled…
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Chemistry
High-resolution IR spectroscopy reveals new insights into hydrogen bonding in hydrogen sulfide
Far-infrared spectrum of H2S-H2S at T = 0.37 K calculated using ab initio intermolecular potentials and dipole functions. Credit: Nature Communications (2024). DOI: 10.1038/s41467-024-53444-6 At first glance, water and the foul-smelling molecule hydrogen sulfide don’t seem to have much in common. However, if you invest a little energy, some differences will disappear. At first glance, the smell of soft drink…
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