Measurement of Low Concentrations of Nanoparticles in Aerosols Using Optical Dielectric Microcavity: The Case of TiO2 Nanoparticles

A method for measuring low concentrations (up to 0.001 mg/mL) of TiO 2 nanoparticles in aerosols using an optical dielectric microcavity is proposed. The method is based on measuring the change in the microcavity Q factor due to the adsorption of particles on its surface. The results of experimental...

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Bibliographic Details
Published in:Nanotechnologies in Russia 2018, Vol.13 (1-2), p.38-44
Main Authors: Min’kov, K. N., Ivanov, A. D., Samoilenko, A. A., Ruzhitskaya, D. D., Levin, G. G., Efimov, A. A.
Format: Article
Language:English
Subjects:
Aerosols
Chemistry and Materials Science
Dielectrics
Error analysis
Industrial and Production Engineering
Low concentrations
Machines
Manufacturing
Materials Science
Nanoparticles
Nanotechnology
Processes
Q factors
Titanium dioxide
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Summary:A method for measuring low concentrations (up to 0.001 mg/mL) of TiO 2 nanoparticles in aerosols using an optical dielectric microcavity is proposed. The method is based on measuring the change in the microcavity Q factor due to the adsorption of particles on its surface. The results of experimental studies of aerosol samples containing TiO 2 nanoparticles with a diameter of 40 nm with different concentrations are presented. The method for calibrating the measurement channel is developed. The basic requirements for the optical dielectric microcavity as a primary measuring transducer are formulated. The influence of the opticalmode volume on the measurement error is estimated.
ISSN:1995-0780
1995-0799
DOI:10.1134/S1995078018010093