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Abstract: The use of hot disk sensors for the determination of content ratio in binary mixtures of fluids was investigated. The sensors were manufactured with various layouts of metal foil encapsulated by Kapton. Due to the difference in thermal conductivity between two fluids in a mixture, the thermal conductivity of the mixture is dependent on the ratio of the fluids. This method could be used in the future in Direct Methanol Fuel Cells (DMFCs) to determine the methanol concentration in water, or in a number of other applications.

Reference: Microsystem Technologies, 20, 4 (2014) 641-652

DOI: 10.1007/s00542-013-2001-y