Dynamic Thermal characterization of Thin Films via IR Thermography

Anton Greppmair (Autor)

Buch | Softcover

138 Seiten

2018
Verein zur Förderung des Walter Schottky Instituts der Technischen Universität München (Verlag)
978-3-946379-15-7 (ISBN)

Infos

This work presents a novel method for the thermal characterization of thin films via infrared thermography. In order to measure the thermal conductivity of a material, a temperature gradient has to be introduced. For this purpose, the films are suspended above rectangular and circular cavities in opaque substrates. The free-standing area of the films is heated homogeneously by a visible light source. In order to measure the resulting temperature distribution, a contact-free method is preferred, such as infrared microscopy. Under steady-state conditions, the measured temperature distribution can be fitted with an analytical model, yielding the in-plane thermal conductivity. The method can be extended by periodically heating the film and capturing the temperature distribution as a function of time. We develop a finite differences model with which not only the thermal conductivity but also the volumetric heat capacity and the effective total emissivity can be obtained from the time-dependent temperature measurement.

Produkt-Details

• Erscheinungsdatum: 20.11.2018
• Verlagsort: Garching
• Sprache: englisch
• Maße: 150 x 210 mm
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Allgemeines / Lexika
• Schlagworte: ir thermography • thermal conductivity • Thin Films
• ISBN-10: 3-946379-15-X / 394637915X
• ISBN-13: 978-3-946379-15-7 / 9783946379157
• Zustand: Neuware