Comprehensive characterization of thermal properties of solids using thermal impedance

TitleComprehensive characterization of thermal properties of solids using thermal impedance
Publication TypeJournal Article
Year of Publication2012
AuthorsMartínez-Flores, JJ, Licea-Jiménez, L, Pérez-Garcia, SA, Rodríguez-Viejo, J, Alvarez-Quintana, J
JournalJournal of Applied Physics
Start Page094901
KeywordsHeat capacity, Materials properties, Thermal conductivity, Thermal diffusion, Thermal properties

Thermal impedance Zth(iω) is a way of defining the thermophysical characteristics and behavior of thermal systems. Existing photoacoustic and photothermal approaches based on thermal impedance formalism merely allows a partial thermal characterization of the materials (generally, either thermal diffusivity or thermal effusivity). In this work, a new approach based on the thermal impedance concept in terms of its characteristic thermal time constant is developed from thermal quadrupoles formalism. The approach outlined in this contribution presents a set of analytical equations in which through a single measurement of thermal impedance is sufficient to obtain a comprehensive characterization of the thermophysical properties of solid materials in a simple way.

Short TitleJ. Appl. Phys. 112, 094901 (2012)
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