Results 141 to 150 of about 6,759 (194)

High-sensitivity narrow‑band T-shaped cantilever Fabry-perot acoustic sensor for photoacoustic spectroscopy. [PDF]

Photoacoustics
Wang J, Wang Q, Yan C, Xu S, Zou X, Wu Q, Ng WP, Binns R, Fu YQ.   +8 more
europepmc   +1 more source

Photoacoustic Spectroscopy Using a Quantum Cascade Laser for Analysis of Ammonia in Water Solutions. [PDF]

ACS Omega
Apostolakis A, Aoust G, Maisons G, Laurent L, Pereira MF.   +4 more
europepmc   +1 more source

Miniature optical fiber photoacoustic spectroscopy gas sensor based on a 3D micro-printed planar-spiral spring optomechanical resonator. [PDF]

Photoacoustics
Li T, Zhao P, Wang P, Krishnaiah KV, Jin W, Zhang AP.   +5 more
europepmc   +1 more source

Application of fourier transform infrared photoacoustic spectroscopy for quantification of nutrient contents and their plant availability in manure and digestate. [PDF]

Heliyon
Wali K, Khan HA, Sica P, Van Henten EJ, Meers E, Brunn S.   +5 more
europepmc   +1 more source

Machine Learning Enabled Photoacoustic Spectroscopy for Noninvasive Assessment of Breast Tumor Progression In Vivo: A Preclinical Study. [PDF]

ACS Sens
Rodrigues J, Amin A, Chandra S, Mulla NJ, Nayak GS, Rai S, Ray S, Mahato KK.   +7 more
europepmc   +1 more source

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Photoacoustic spectroscopy

Review of Scientific Instruments, 1983
The subject of photoacoustic spectroscopy is reviewed. The basic areas of instrumentation (excitation sources, acoustic cells, and acoustic detectors) are described, and the specific advantages of various designs and techniques are discussed. Results are presented to highlight the applicability of photoacoustic spectroscopy to a wide variety of ...
Gary A. West, Joseph J. Barrett, Donald R. Siebert, K. Virupaksha Reddy   +3 more
exaly   +3 more sources

Photoacoustic spectroscopy with condensed samples

Applied Optics, 1976
A discussion of the photoacoustic spectroscopy of condensed matter is presented with emphasis on the role of the sample and the sample cell in the photoacoustic signal waveform. The spectrometer and sample cell are described, and an experimental evaluation of the system performance is given.
John F Mcclelland
exaly   +3 more sources

Optimization of a Microphone for Photoacoustic Spectroscopy

Applied Spectroscopy, 2003
The principles of optimizing a microphone for a photoacoustic detector in the nonresonant mode of operation are presented. Performance of the constructed optical cantilever microphone is compared to the commercial electret microphone by measuring the photoacoustic spectrum of methane with both systems.
Klaus Wilcken, Jyrki Kauppinen
exaly   +3 more sources

Photoacoustic Spectroscopy of Condensed Matter

Angewandte Chemie International Edition in English, 1978
AbstractPhotoacoustic spectroscopy is a new analytical tool that provides a simple nondestructive technique for obtaining information about the electronic absorption sprctrum of samples such as powders, semisolids, gels, and liquids. It can also be applied to samples which cannot be examined by conventional optical methods.
exaly   +3 more sources

Photoacoustic spectroscopy of solids

The Journal of the Acoustical Society of America, 1973
There are a great many substances, both organic and inorganic, that, because of their physical state, cannot be readily studied by conventional absorption or reflection techniques. In photoacoustic spectroscopy, light absorbed by the sample is converted into a measurable acoustic signal, and spectra closely corresponding to optical absorption spectra ...
openaire   +1 more source