# Micromachined Polycrystalline Sige-Based Thermopiles for Micropower Generation on Human Body - Computer Science > Other Computer Science

Micromachined Polycrystalline Sige-Based Thermopiles for Micropower Generation on Human Body - Computer Science > Other Computer Science - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: This paper presents a polycrystalline silicon germanium poly-SiGethermopile specially designed for thermoelectric generators used on human body.Both the design of the single thermocouple and the arrangement of thethermocouple array have been described. A rim structure has been introduced inorder to increase the temperature difference across the thermocouple junctions.The modeling of the thermocouple and the thermopile has been performedanalytically and numerically. An output power of about 1 $\mu$W at an outputvoltage of more than 1 V is expected from the current design of thermopiles ina watch-size generator. The key material properties of the poly-SiGe have beenmeasured. The thermopile has been fabricated and tested. Experimental resultsclearly demonstrate the advantage of the rim structure in increasing outputvoltage. In presence of forced convection, the output voltage of a non-releasedthermopile can increase from about 53 mV-K-cm2 to about 130 mV-K-cm2 after therim structure is formed. A larger output voltage from the thermopile isexpected upon process completion.

Autor: Z. Wang, V. Leonov, P. Fiorini, C. Van Hoof

Fuente: https://arxiv.org/