Thermocolorimetry based on VO2 to Measure Thermal Conductivity
Phase-change materials, such as VO₂, exhibit non-linear properties that enable advanced applications, notably due to their semiconductor-to-metal transition. Scientists have developed an optical method to measure thermal conductivity by analysing the size of a laser-induced metallic region. This approach, validated on several materials, is accessible and adaptable to a range of samples, with potential forspatially resolved thermal conductivity mapping.
References :
VO2 Thin-Film Transducer for Steady-State Thermal Conductivity Measurements, Ilaria Delbono, Pascal J. Schroeder, Boris Kalinic, Carlo Scian, Irving Alonzo-Zapata, Frédéric Dumas-Bouchiat, Corinne Champeaux, Tiziana Cesca, Giovanni Mattei, Danièle Fournier, James K. Utterback, Jose Ordonez-Miranda, ACS Photonics, 12, 12, 7002–7012 - Published December 6, 2025.
DOI: https://doi.org/10.1021/acsphotonics.5c02339
Open access: HAL
The present study was carried out in the following CNRS laboratories: