Experimental and modeling investigation of binary liquid mixtures

Ashley M. Bradley; Bruce E. Bernacki; Steven C. Smith; Oliva M. Primera-Pedrozo; Russell G. Tonkyn; Timothy J. Johnson; Tanya L. Myers

doi:10.1117/12.2588558

12 April 2021 Experimental and modeling investigation of binary liquid mixtures

Ashley M. Bradley, Bruce E. Bernacki, Steven C. Smith, Oliva M. Primera-Pedrozo, Russell G. Tonkyn, Timothy J. Johnson, Tanya L. Myers

Author Affiliations +

Proceedings Volume 11749, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXII; 117490R (2021) https://doi.org/10.1117/12.2588558
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

Binary mixtures of liquids may be encountered in industrial or remote sensing scenarios and present challenges to positive identification compared to neat single-component liquids. Our investigation examines whether one can predict the optical properties of the mixture, i.e. its complex index of refraction, by assuming a linear superposition of the real and imaginary components of the index of refraction in proportion to the ratio of each constituent. To investigate this hypothesis various liquid mixtures were created using mass ratios. The mixtures were then characterized as to their complex index of refraction and used in numerical modeling calculations of thin liquid mixture films on surfaces and compared with composed mixtures using linear n and k synthetic mixtures where the n and k components of the complex index of refraction were combined in similar ratios. The comparison of modeling and experimental results is presented with recommendations for further investigation.

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Citation Download Citation

Ashley M. Bradley, Bruce E. Bernacki, Steven C. Smith, Oliva M. Primera-Pedrozo, Russell G. Tonkyn, Timothy J. Johnson, and Tanya L. Myers "Experimental and modeling investigation of binary liquid mixtures", Proc. SPIE 11749, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXII, 117490R (12 April 2021); https://doi.org/10.1117/12.2588558

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