Abstract
In this paper we discuss the use of an alternative photothermal technique for measurements of thermal properties of liquid mixtures. The proposed technique is based upon the concept of a thermal wave interferometer. The liquid sample is confined between two thin pyroelectric detectors. One of these detectors acts as a modulated light absorber while the other is used for sensing the temperature fluctuations transmitted through the liquid layer. It is demonstrated that the proposed experimental configuration allows us to fully characterize the thermal properties of the constituent liquids.
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