Results 21 to 30 of about 908,256 (325)

Characterizing viral samples using machine learning for Raman and absorption spectroscopy

open access: yesMicrobiologyOpen, 2022
Machine learning methods can be used as robust techniques to provide invaluable information for analyzing biological samples in pharmaceutical industries, such as predicting the concentration of viral particles of interest in biological samples. Here, we
Miad Boodaghidizaji   +5 more
doaj   +1 more source

A Method for Correcting the Interference of Overlapping Absorption Lines Using Second Harmonic Spectral Reconstruction

open access: yesApplied Sciences, 2021
The measurement accuracy of trace gas detection based on infrared absorption spectroscopy is influenced by the overlap of absorption lines. A method for correcting the interference of overlapping absorption lines using second harmonic spectral ...
Yue Hou, Kejin Huang
doaj   +1 more source

Scanning tunnelling miscroscopy/spectroscopy and X-ray absorption spectroscopy studies of Co adatoms and anoislands on highly oriented pyrolytic graphite [PDF]

open access: yes, 2010
In this paper, the scanning tunneling microscopy, scanning tunneling spectroscopy and X-ray absorption spectroscopy of cobalt adatoms and nanoislands were studied on a highly oriented pyrolytic graphite.
de Jong, M.P.   +6 more
core   +7 more sources

Entanglement-Assisted Absorption Spectroscopy [PDF]

open access: yesPhysical Review Letters, 2020
We propose a practical transmitter-receiver system that exploits entanglement to achieve a provable quantum advantage over all spectrometers based on classical sources. The quantum advantage is robust against noise and loss.
Shi, Haowei   +3 more
openaire   +5 more sources

Integrated Nanophotonic Waveguide-Based Devices for IR and Raman Gas Spectroscopy

open access: yesSensors, 2021
On-chip devices for absorption spectroscopy and Raman spectroscopy have been developing rapidly in the last few years, triggered by the growing availability of compact and affordable tunable lasers, detectors, and on-chip spectrometers.
Sebastián Alberti   +2 more
doaj   +1 more source

Optical Characterization of Ciprofloxacin Photolytic Degradation by UV-Pulsed Laser Radiation

open access: yesMolecules, 2021
Ciprofloxacin is one of the most prescribed antibiotics in treating bacterial infections, becoming an important pollutant of the wastewaters. Moreover, ciprofloxacin is hard to be destroyed by conventional water treatment processes; therefore, efficient ...
Tatiana Tozar   +3 more
doaj   +1 more source

Reduction of optical noise in near-infrared range laser hygrometry [PDF]

open access: yesMetrology and Measurement Systems, 2023
A contactless laser hygrometer based on light absorption by H2O molecules at 1392.5 nm is described. However, measurement results can be affected by optical noise when applied to an atmospheric tunnel or glass cuvette.
Tadeusz Stacewicz   +2 more
doaj   +1 more source

Long-Term Stable Online Acetylene Detection by a CEAS System with Suppression of Cavity Length Drift

open access: yesSensors, 2019
A trace acetylene (C2H2) detection system was demonstrated using the cavity-enhanced absorption spectroscopy (CEAS) technique and a near-infrared distributed feedback (NIR-DFB) laser.
Qixin He, Qibo Feng, Jiakun Li
doaj   +1 more source

Interpretation of X-ray Absorption Spectroscopy in the Presence of Surface Hybridization [PDF]

open access: yes, 2017
X-ray absorption spectroscopy yields direct access to the electronic and geometric structure of hybrid inorganic-organic interfaces formed upon adsorption of complex molecules at metal surfaces.
Diller, Katharina   +3 more
core   +2 more sources

Ultrasensitive Absorption Spectroscopy

open access: yesPhysics, 2011
Absorption spectroscopy limited only by quantum noise has been demonstrated over a broad frequency range using laser frequency combs.
Mandon, J.B., Harren, F.
openaire   +3 more sources

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