Results 51 to 60 of about 1,555,141 (308)
Enhanced photothermal displacement spectroscopy for thin-film characterization using a Fabry-Perot resonator [PDF]
, 2003 We have developed a technique for photothermal displacement spectroscopy that is potentially orders of magnitude more sensitive than conventional methods.
Black, Eric D. +3 more
core +3 more sources
Calibration of a multi-pass photoacoustic spectrometer cell using light-absorbing aerosols [PDF]
Atmospheric Measurement Techniques, 2017 The multi-pass photoacoustic spectrometer (PAS) is an important tool for the direct measurement of light absorption by atmospheric aerosol. Accurate PAS measurements heavily rely on accurate calibration of their signal.
N. Bluvshtein +8 more
doaj +1 more source
IEEE Photonics Journal, 2020 A simultaneous in-situ detection technique to obtain multi-optical parameters was proposed. The same 403.56 nm, low power, blue diode laser was used to conduct the cavity ring-down spectroscopy and photoacoustic spectroscopy, which were coupled.
Hua-Wei Jin +5 more
doaj +1 more source
Photoacoustic heterodyne breath sensor for real-time measurement of human exhaled carbon monoxide
Photoacoustics, 2022 A breath sensor for real-time measurement of human exhaled carbon monoxide is reported. This breath sensor is based on a novel photoacoustic heterodyne gas sensing technique, which combines the conventional photoacoustic spectroscopy with the beat ...
Biao Li +4 more
doaj +1 more source
A measurement strategy for non-dispersive ultra-violet detection of formaldehyde in indoor air: Spectral analysis and interferent gases [PDF]
, 2015 We have conducted an extensive review of published spectra in order to identify a region with potential for detection of formaldehyde in indoor air.
Davenport, John +3 more
core +1 more source
Applied Physics ReviewsThe precise detection of volatile organic compounds plays a pivotal role in addressing environmental concerns, industrial safety, and medical diagnostics.
Kumar Kinjalk +14 more
semanticscholar +1 more source
Photo-acoustic dual-frequency comb spectroscopy
Nature Communications, 2020 Here, the authors show that the resolution and speed limitations in broadband photo-acoustic spectroscopy can be overcome by combining dual-comb spectroscopy with photo-acoustic detection.
Thibault Wildi +4 more
doaj +1 more source
Modelling of open photoacoustic resonators
Photoacoustics, 2020 Photoacoustic spectroscopy employs acoustic resonators for signal amplification. Resonators are usually closed, however, in some applications, open resonators are preferred. The opening deteriorates the photoacoustic signal hence reducing the sensitivity
Said Ali Said El-Busaidy +3 more
doaj +1 more source
Brazilian Archives of Biology and Technology, 2023 Monteverdia ilicifolia (Mart. ex Reissek) Biral (basionym: Maytenus ilicifolia Mart. ex Reissek) (Celastraceae) is popularly known as holy thorn or “espinheira-santa” in Brazil. This herb is traditionally used for gastric and digestive problems. However,
Mylena de França Martins +7 more
doaj +1 more source
Photoacoustic Imaging and Spectroscopy [PDF]
Journal of Biomedical Optics, 2010 Photoacoustic Imaging and Spectroscopy Lihong V. Wang, Editor, 499 pages +xx, ISBN: 978-1-4200- 5991-5, CRC Press, Taylor and Francis Group, Boca Raton, Florida (2009), $149.95, hardcover. Reviewed by Barry R. Masters, Visiting Scientist, Department of Biological Engineering, Massachusetts Institute of Technology, and Visiting Scholar, Department of ...
Lihong V. Wang, Barry R. Masters
openaire +3 more sources