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Proceedings Paper

A bi-material microbeam based thermal actuator for out-of-plane rotation
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Paper Abstract

A new design for bi-material microbeams is presented in this paper which enables the tuning of their thermal actuation response to deliver out-of-plane rotation . The design is applied to a group of 300 μm long and 20 μm wide gold-over-polysilicon microbeams with a 60 μm long top gold strip positioned in different locations along the beam length. Numerical simulation predicts that if the gold strip is situated 20 μm from one end of the microbeam, a maximum out-of- plane rotation angle of 0.9 degree can be achieved with a temperature increase of 150 °C. Thermal loading experiments carried out on fabricated similar microbeams show similar responses to those predicted by finite element simulations.

Paper Details

Date Published: 7 March 2014
PDF: 8 pages
Proc. SPIE 8977, MOEMS and Miniaturized Systems XIII, 89770M (7 March 2014); doi: 10.1117/12.2040728
Show Author Affiliations
Ali Najafi Sohi, Univ. of Waterloo (Canada)
Patricia M. Nieva, Univ. of Waterloo (Canada)

Published in SPIE Proceedings Vol. 8977:
MOEMS and Miniaturized Systems XIII
Wibool Piyawattanametha; Yong-Hwa Park, Editor(s)

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