Results 11 to 20 of about 881,282 (301)
Upconversion time-stretch infrared spectroscopy
Light: Science & Applications, 2023 We develop upconversion time-stretch infrared spectroscopy, which enables high-speed and high-resolution broadband mid-infrared spectroscopy with over 1000 spectral elements at a rate of more than 10 MSpectra s−1.
Kazuki Hashimoto +6 more
doaj +2 more sources
Nanostructure-enhanced infrared spectroscopy [PDF]
Nanophotonics, 2021 While infrared spectroscopy is a powerful technique that provides molecular information such as chemical constituents and chemical structures of analytes, it suffers from low absorption cross-section resulting in low sensitivity and poor signal-to-noise ...
Tanaka Takuo, Yano Taka-aki, Kato Ryo
doaj +3 more sources
iScience, 2022 Summary: Terahertz emission from ferromagnetic/non-magnetic spintronic heterostructures had been demonstrated as pump wavelength-independent. We report, however, the pump wavelength dependence of terahertz emission from an optimized Fe/Pt spintronic ...
Valynn Katrine Mag-usara +15 more
doaj +1 more source
Frontiers in Aging Neuroscience, 2022 Brain perfusion declines with aging. Physical exercise represents a low-cost accessible form of intervention to increase cerebral blood flow; however, it remains unclear if exercise-induced amelioration of brain perfusion has any impact on cognition.
Maria B. Renke +7 more
doaj +1 more source
Infrared Spectroscopy–Quo Vadis?
Applied Sciences, 2022 Given the exquisite capability of direct, non-destructive label-free sensing of molecular transitions, IR spectroscopy has become a ubiquitous and versatile analytical tool.
Michael Hlavatsch +6 more
doaj +1 more source
Photoacoustics, 2021 In this work, we report on a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for hydrogen sulfide (H2S) detection, exploiting a liquid-nitrogen-cooled THz quantum cascade laser (QCL) operating in pulsed mode.
Angelo Sampaolo +12 more
doaj +1 more source
Infrared and Raman Spectroscopy [PDF]
Journal of Biomedical Optics, 2005 This PDF file contains the editorial “Infrared and Raman Spectroscopy” for JBO Vol.
Michael D, Morris +2 more
openaire +2 more sources
IR action spectroscopy of glycosaminoglycan oligosaccharides [PDF]
, 2020 Glycosaminoglycans (GAGs) are a physio- and pharmacologically highly relevant class of complex saccharides, possessing a linear sequence and strongly acidic character.
Freyse, Joanna +9 more
core +2 more sources
Infrared Spectroscopy of Be Stars [PDF]
Symposium - International Astronomical Union, 1994 FeII emission lines are present in a variety of astrophysical objects and, in particular, in Be stars, where in some situations they can also be seen in absorption. Selvelli & Araujo (1984) studied a sample of classical Be stars that have FeII emission lines in the optical region.
R.M. Torres +2 more
openaire +1 more source
Shock Excitation in Narrow-line Regions Powered by AGN Outflows
The Astrophysical Journal, 2023 Outflows in an active galactic nucleus (AGN) are considered to play a key role in the evolution of the host galaxy through transfer of a large amount of energy.
Misaki Mizumoto +12 more
doaj +1 more source