Power production by a dynamic micro heat engine with an integrated thermal switch

Mechanical power production by a dynamic micro heat engine with integrated thermal switch is demonstrated. A microengine operated from a constant heat source of 60 deg C is shown to produce 350 muW of mechanical power. Employing an active thermal switch to control heat rejection from the microengine...

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Bibliographic Details
Published in:Journal of micromechanics and microengineering 2007-09, Vol.17 (9), p.S217-S223
Main Authors: Cho, J H, Weiss, L W, Richards, C D, Bahr, D F, Richards, R F
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Mechanical engineering. Machine design
Mechanical instruments, equipment and techniques
Microelectronic fabrication (materials and surfaces technology)
Micromechanical devices and systems
Physics
Precision engineering, watch making
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:Mechanical power production by a dynamic micro heat engine with integrated thermal switch is demonstrated. A microengine operated from a constant heat source of 60 deg C is shown to produce 350 muW of mechanical power. Employing an active thermal switch to control heat rejection from the microengine enables power to be increased to 2500 muW. Power consumption by the thermal switch is shown to be minimized by operating the cantilever switch at its resonant frequency. Thermal switch power requirements can be reduced to less than 20 muW for operational speeds up to 100 Hz.
ISSN:0960-1317
1361-6439
DOI:10.1088/0960-1317/17/9/S02