Results 31 to 40 of about 896,153 (298)

Stability Analysis of the Fluorescent Tracer 1-Methylnaphthalene for IC Engine Applications by Supercontinuum Laser Absorption Spectroscopy

Sensors, 2020
1-methylnaphthalene (1-MN) is a widely used laser-induced fluorescence (LIF) tracer for planar imaging of mixture formation and temperature distributions in internal combustion (IC) engines.
Peter Fendt, Ulrich Retzer, Hannah Ulrich, Stefan Will, Lars Zigan   +4 more
doaj   +1 more source

On-chip mid-infrared photothermal spectroscopy using suspended silicon-on-insulator microring resonators [PDF]

, 2016
Mid-infrared spectroscopic techniques rely on the specific "fingerprint" absorption lines of molecules in the mid-infrared band to detect the presence and concentration of these molecules.
Baets, Roel, Kuyken, Bart, Malik, Aditya, Muneeb, Muhammad, Roelkens, Günther, Vasiliev, Anton   +5 more
core   +3 more sources

Entangled Two-Photon Absorption Spectroscopy [PDF]

Accounts of Chemical Research, 2018
The application of quantum states of light such as entangled photons, for example, created by parametric down conversion, has experienced tremendous progress in the almost 40 years since their first experimental realization. Initially, they were employed in the investigation of the foundations of quantum physics, such as the violation of Bell's ...
Frank Schlawin, Konstantin E. Dorfman, Shaul Mukamel   +2 more
openaire   +3 more sources

Quantum Cascade Laser Absorption Spectroscopy as a Plasma Diagnostic Tool: An Overview

Sensors, 2010
The recent availability of thermoelectrically cooled pulsed and continuous wave quantum and inter-band cascade lasers in the mid-infrared spectral region has led to significant improvements and new developments in chemical sensing techniques using in ...
Jürgen Röpcke, Norbert Lang, Marko Hübner, Frank Hempel, Stefan Welzel, Paul B. Davies   +5 more
doaj   +1 more source

Efficient Semiclassical Dynamics for Vibronic Spectroscopy beyond Harmonic, Condon, and Zero-Temperature Approximations

CHIMIA, 2021
Understanding light-induced processes in biological and human-made molecular systems is one of the main goals of physical chemistry. It has been known for years that the photoinduced dynamics of atomic nuclei can be studied by looking at the vibrational ...
Tomislav Begušić, Jirí Vaníček
doaj   +1 more source

Tinaksite and Tokkoite: X-ray Powder Diffraction, Optical, and Vibrational Properties

Crystals, 2022
In this study, natural tinaksite (K2Ca2NaTi[Si7O18OH]O) and tokkoite (K2Ca4[Si7O18OH](OH,F)) collected in charoite rocks of the Murun alkaline massif (Siberia, Russia) were examined by X-ray diffraction and optical and vibrational spectroscopic methods ...
Ekaterina Kaneva, Roman Shendrik
doaj   +1 more source

Photothermal Absorption Spectroscopy of Individual Semiconductor Nanocrystals [PDF]

, 2005
Photothermal heterodyne detection is used to record the first room-temperature absorption spectra of single CdSe/ZnS semiconductor nanocrystals.
Achermann M., Berciaud S., Berciaud S., Boyer D., Caruge J. M., Chan W. C., Colvin V. L., Dabbousi B. O., Efros A. L., Efros A. L., Ekimov A. I., Htoon H., Klimov V. I., Klimov V. I., Krauss T. D., Kuno M., Leatherdale C. A., Lounis B., Michler P., Nirmal M., Patton B., Schlegel G., Shimizu K. T., Wang L. W.   +23 more
core   +3 more sources

Diagnostic Potential of Cosmic-Neutrino Absorption Spectroscopy [PDF]

, 2004
Annihilation of extremely energetic cosmic neutrinos on the relic-neutrino background can give rise to absorption lines at energies corresponding to formation of the electroweak gauge boson $Z^{0}$.
A. Liddle, A. W. Strong, Chris Quigg, E. Harrison, E. W. Kolb, G. T. Zatsepin, G. T. Zatsepin, Gabriela Barenboim, M. Trodden, Olga Mena Requejo, S. Dodelson, S. Weinberg, S. S. Gershtein, S. S. Gershtein, T. Yanagida, V. S. Berezinsky, W. Y. Lee, Y. Itow   +17 more
core   +3 more sources

Absorption spectroscopy at the ultimate quantum limit from single-photon states

New Journal of Physics, 2017
Absorption spectroscopy is routinely used to characterise chemical and biological samples. For the state-of-the-art in laser absorption spectroscopy, precision is theoretically limited by shot-noise due to the fundamental Poisson-distribution of photon ...
R Whittaker, C Erven, A Neville, M Berry, J L O’Brien, H Cable, J C F Matthews   +6 more
doaj   +1 more source

Detection of Cold Atomic Clouds in the Magellanic Bridge [PDF]

, 1998
We report a detection of cold atomic hydrogen in the Magellanic Bridge using 21-cm absorption spectroscopy toward the radio source B0312-770. With a column density of N_HI=1.2E20 cm^-2, a maximum absorption optical depth of tau=0.10 and a maximum 21-cm ...
Courtes G., Despois D., Dickey J. M., Henry A. Kobulnicky, Hindman J. V., Israel F. P., John M. Dickey, Johnson P. G., Kalberla P. W. M., Meaburn J., Mebold U., Murai T., Otrupcek R., Pagel B. E. J., Rubio M., Schwering P. B. W., Shapley H.   +16 more
core   +2 more sources