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Study of dependence between thermal diffusivity and sample concentration measured by means of frequency-resolved thermal lens experiment

Departamento de Física, Escuela Superior Politécnica del Litoral, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador

E-mail Address: gerarluis@gmail.com

E-mail Address: luisg.rodriguez@epn.edu.ec

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Peter Iza

Departamento de Física, Escuela Superior Politécnica del Litoral, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador

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J. L. Paz

Departamento de Física, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Ed. Ing. Civil Piso 1, 170517, Apdo. 17-12-866 Quito, Ecuador

Departamento de Química, Universidad Simón Bolívar, Apartado 89000, Caracas 1086, Venezuela

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https://doi.org/10.1142/S0218863516500223Cited by:8 (Source: Crossref)

Abstract

This paper describes experimental results of thermal diffusivity measurements performed on different concentrations of aqueous Tartrazine solutions. The measurements are performed using the frequency-resolved thermal lensing technique and the results are compared with the thermal diffusivity value of pure water used as a solvent or host liquid. The results show that at low concentrations, the thermal properties of the solution are roughly equal to those of the water. However, when the concentration is increased, the thermal properties of the solutions diverge from that of the host liquid.

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