Thermal investigation of micro-filament heaters

The present work is a study of the thermal properties of integrable micro-filaments. The realised structure is the key element of the targeted integrable micro-pellistor for catalytic gas sensing, therefore, its thermal characterisation is of crucial importance. Direct measurement of temperature in the micro-heater is unfortunately troublesome due to the small dimensions used. In this work the temperature of the micro-filament was measured by two different methods, based upon the resistance alteration of the filament, and analysis of the thermal radiation of the heated micro-filament. The reason for the differences was explained by inherent features of the methods, and confirmed by thermal simulation.