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Naslov:Photoacoustics - A nondestructive evaluation technique for thermal and optical characterisation of metal mirrors
Avtorji:ID Swapna, Mohanachandran Nair Sindhu, UNIVERSITY OF KERALA (Avtor)
ID V P N, NAMPOORI, CUSAT (Avtor)
ID S, Sankararaman, UNIVERSITY OF KERALA (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Photoacoustic technique has emerged as a powerful tool for nondestructive evaluation and characterization. The high signal to noise ratio, sensitivity, and the least quantity of sample required make the technique suitable for wide range of applications. The intensity modulated laser beam focused on to the sample in the photoacoustic cell generates acoustic waves. Analysis of the acoustic signal enables the measurement of thermal and optical properties of the material. In the present work, the photoacoustic technique has been extended to find the thermal diffusivity and to demonstrate how the technique can be used for measuring optical reflection coefficient of a precious metal mirror—Aranmula mirror. The mirror being metal with high reflection coefficient, it finds application in optical instrumentation. The mirror is subjected to morphological characterization by atomic force microscopy and field emission scanning electron microscopy. The elemental and structural characterizations are done by energy dispersive x-ray spectroscopy, X-ray dot mapping, and X-Ray diffraction analysis. The fractal dimension of the particle distribution over the surface provides information about the surface roughness. The box-counting and power spectral fractal dimensions are found to be around 1.63 and 1.65 respectively.
Ključne besede:Photoacoustics, Nondestructive evaluation, Aranmula metal mirror, Reflectivity
Verzija publikacije:Objavljena publikacija
Leto izida:2018
Št. strani:9
Številčenje:3, 47
PID:20.500.12556/RUNG-7432 Novo okno
COBISS.SI-ID:113403395 Novo okno
DOI:10.1007/s12596-018-0471-0 Novo okno
NUK URN:URN:SI:UNG:REP:V3RBACDP
Datum objave v RUNG:30.06.2022
Število ogledov:3220
Število prenosov:0
Metapodatki:XML DC-XML DC-RDF
:
SWAPNA, Mohanachandran Nair Sindhu, V P N, NAMPOORI in S, Sankararaman, 2018, Photoacoustics - A nondestructive evaluation technique for thermal and optical characterisation of metal mirrors. Journal of Optics [na spletu]. 2018. Vol. 3, no. 47. [Dostopano 3 april 2025]. DOI 10.1007/s12596-018-0471-0. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=7432
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Gradivo je del revije

Naslov:Journal of Optics
Leto izida:2018
ISSN:Journal of Optics

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:29.06.2022

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