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Proceedings Paper

Huber effect and its application to micromotors
Author(s): Yullia Shen; Boon Kain Tay; Benjamin Thompson; Wen L. Soong; Bruce R. Davis; Derek Abbott
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Paper Abstract

The micromotor is an extremely small device a few millimeters or less in size. Micromotors in the order of microns are realized by MEMS technology. Important applications in biomedicine include ultrasound probes for blood vessels, microrobots for colon intervention, smart pills and nanolitre pumps. Other uses include actuator for MOEMS and small variable capacitors. One exciting implication of micromotors is that they can be powered by rectifying mechanical vibrations. MEMS are playing an important role in our daily life as these systems are widely used in optics, communication and information systems, fluidics, biotechnology and medicine, scanning probe microscopes, automobiles and aerospace. There are a number technical challenges with micromotors, including the need to reduce stiction and increase torque. The precise geometry of the motor is usually tightly coupled to the stiction effect - the sticking of adjacent surfaces after release due to static friction. Piezoelectric, electrostatic and electromagnetic effects have been investigated to produce the electromotive force for the micromotor. However, we propose a micromotor design based on the Huber effect, as this will allow a new range of geometries and hence possibilities for managing stiction. To date, there have been no reported attempts at using the Huber effect, and this is possibly due to it being a poorly understood phenomenon. The reason for this is that large motors that utilize the Huber effect are self-destructive and hence have never been reliably characterized. Such motors are shown to be able to operate form a dc or ac source, and this property may be valuable in some MEMS applications.

Paper Details

Date Published: 29 September 1999
PDF: 6 pages
Proc. SPIE 3891, Electronics and Structures for MEMS, (29 September 1999); doi: 10.1117/12.364436
Show Author Affiliations
Yullia Shen, Univ. of Adelaide (Australia)
Boon Kain Tay, Univ. of Adelaide (Australia)
Benjamin Thompson, Univ. of Adelaide (Australia)
Wen L. Soong, Univ. of Adelaide (Australia)
Bruce R. Davis, Univ. of Adelaide (Australia)
Derek Abbott, Univ. of Adelaide (Australia)

Published in SPIE Proceedings Vol. 3891:
Electronics and Structures for MEMS
Neil W. Bergmann; Olaf Reinhold; Norman C. Tien, Editor(s)

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