Results 11 to 20 of about 25,059 (249)

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   +2 more sources

Progress and Perspectives of Mid-Infrared Photoacoustic Spectroscopy for Non-Invasive Glucose Detection. [PDF]

Biosensors (Basel), 2023
Kaysir MR, Song J, Rassel S, Aloraynan A, Ban D.   +4 more
europepmc   +3 more sources

Study on neural network algorithm for detecting respirable dust in photoacoustic cavity

AIP Advances, 2021
The traditional photoacoustic cavity has the advantages of simple structure, low cost, and easy integration with optical cavity technology, so it has significant advantages in the measurement of the optical characteristics of respirable dust. In order to
Huawei Jin, Ping Luo, Juan Dou, Huachun Bai   +3 more
doaj   +1 more source

Microphysical properties of carbonaceous aerosol particles generated by laser ablation of a graphite target [PDF]

Atmospheric Measurement Techniques, 2015
In this work various microphysical properties including mass concentration, size distribution and morphology of aerosol particles generated by laser ablation of a high purity graphite sample were investigated in detail. Supplementary chemical analysis of
T. Ajtai, N. Utry, M. Pintér, G. Kiss-Albert, R. Puskás, Cs. Tápai, G. Kecskeméti, T. Smausz, B. Hopp, Z. Bozóki, Z. Kónya, G. Szabó   +11 more
doaj   +1 more source

Photoacoustic and photothermal methods in spectroscopy and characterization of soils and soil organic matter

Photoacoustics, 2020
Review sums up the application of photoacoustic and photothermal spectroscopies for the analysis and characterization of soils and soil organic matter and discusses the outlooks in this area.
Dmitry S. Volkov, Olga B. Rogova, Mikhail A. Proskurnin   +2 more
doaj   +1 more source

On the accuracy of aerosol photoacoustic spectrometer calibrations using absorption by ozone [PDF]

Atmospheric Measurement Techniques, 2018
In recent years, photoacoustic spectroscopy has emerged as an invaluable tool for the accurate measurement of light absorption by atmospheric aerosol. Photoacoustic instruments require calibration, which can be achieved by measuring the photoacoustic ...
N. W. Davies, N. W. Davies, M. I. Cotterell, M. I. Cotterell, C. Fox, K. Szpek, J. M. Haywood, J. M. Haywood, J. M. Langridge   +8 more
doaj   +1 more source

Cantilever-enhanced photoacoustic spectroscopy for gas sensing: A comparison of different displacement detection methods

Photoacoustics, 2022
Photoacoustic spectroscopy (PAS) combines the advantages of high sensitivity, high specificity and zero background, which is very suitable for trace gas detection.
Yonggang Yin, Danyang Ren, Chiye Li, Ruimin Chen, Junhui Shi   +4 more
doaj   +1 more source

Applications of Near Infrared Photoacoustic Spectroscopy for Analysis of Human Respiration: A Review

Molecules, 2020
In this review, applications of near-infrared photoacoustic spectroscopy are presented as an opportunity to evaluate human respiration because the measurement of breath is fast, intact and simple to implement.
Dan C. Dumitras, Mioara Petrus, Ana-Maria Bratu, Cristina Popa   +3 more
doaj   +1 more source

Source apportionment of carbonaceous chemical species to fossil fuel combustion, biomass burning and biogenic emissions by a coupled radiocarbon–levoglucosan marker method [PDF]

Atmospheric Chemistry and Physics, 2017
An intensive aerosol measurement and sample collection campaign was conducted in central Budapest in a mild winter for 2 weeks. The online instruments included an FDMS-TEOM, RT-OC/EC analyser, DMPS, gas pollutant analysers and meteorological sensors ...
I. Salma, I. Salma, Z. Németh, Z. Németh, T. Weidinger, W. Maenhaut, M. Claeys, M. Molnár, I. Major, T. Ajtai, N. Utry, Z. Bozóki   +11 more
doaj   +1 more source

Photoacoustic Spectroscopy [PDF]

, 2020
In its broadest sense, optical spectroscopy can be defined as the study of theinteraction of light with matter. Optical spectroscopy is invaluable in studies on cleanmedia but there are several instances where it is inadequate. In order to solve this problem,several techniques were developed, but these were applicable to only a small category ...
openaire   +3 more sources