An original design of a polysilicon loop-shaped microheater on a thin stacked dielectric membrane is presented. This design ensures high thermal uniformity and insulation (20,000 degrees C/W) and very low power consumption (20 mW for heating at 400 degrees C). Moreover, the use of CMOS-IC compatible TMAH-based bulk-micromachining techniques will allow an easy and low cost gas sensor integration.
Laconte, J., Dupont, C., Akheyar, A., Raskin, J.-P., & Flandre, D. (2002). Fully CMOS compatible low-power microheater. Proceedings of SPIE - the International Society for Optical Engineering, 634-644.