The Measurement of Nanoparticle Concentrations by the Method of Microcavity Mode Broadening Rate

Autor:	Alexey Ivanov, Kirill Min`kov, Alexey Samoilenko, Gennady Levin
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	whispering-gallery mode (WGM) microcavity nanoparticles concentration sensing adsorption measurement system Chemical technology TP1-1185
Zdroj:	Sensors, Vol 20, Iss 20, p 5950 (2020)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s20205950
Popis:	A measurement system for the detection of a low concentration of nanoparticles based on optical microcavities with whispering-gallery modes (WGMs) is developed and investigated. A novel method based on the WGM broadening allows us to increase the precision of concentration measurements up to 0.005 ppm for nanoparticles of a known size. We describe WGM microcavity manufacturing and quality control methods. The collective interaction process of suspended Ag nanoparticles in a liquid and TiO2 in the air with a microcavity surface is studied.
Databáze:	Directory of Open Access Journals
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