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More than a decade of research in the field of thermal, motion, vibration and electromagnetic radiation energy harvesting has yielded increasing power output and smaller embodiments. Power management circuits for rectification and DC–DC conversion are becoming able to efficiently convert the power from these energy harvesters. This paper summarizes recent energy harvesting results and their power...
This paper reports the design, modeling, fabrication and measurement of a CMOS-compatible surface-micromachined test structure for the determination of the thermal conductivity of thin films based on the Seebeck effect. The Seebeck effect-based temperature sensing is more advantageous for thin film materials with a relatively large Seebeck coefficient, such as lightly doped poly-Si and poly-SiGe....
Piezoelectric converters designed for harvesting energy from mechanical vibrations have been fabricated by micromachining technologies. The manufactured piezoelectric energy harvesters have been characterized by applying a sinusoidal oscillation as mechanical input and by using a simple resistive load to measure the output power of the system. A maximum output power of 40 muW has been measured for...
This paper presents a polycrystalline silicon germanium thermopile specially designed as a power scavenger on human body. The design of both a single thermocouple and the thermopile has been described. The modeling has been performed analytically and numerically. An output power of 1-2 muW with an output voltage of about 1 V can be obtained from the designed thermopiles when installed in a watch-size...
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