
Proceedings Paper
Mechanical behavior of microelectromechanical microshuttersFormat | Member Price | Non-Member Price |
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$17.00 | $21.00 |
Paper Abstract
A custom micro-mechanical test system was constructed using off-the-shelf components to characterize the mechanical
properties of microshutters. Microshutters are rectangular microelectromechanical apertures which open and close about
a narrow torsion bar hinge. Displacement measurements were verified using both capacitive and digital image
correlation techniques. Repeatable experiments on Si3N4 cantilever beams verified that the test system operates consistently. Using beam theory, the modulus of elasticity of the low stress Si3N4 was approximately 150 GPa, though significant uncertainty exists for this measurement due primarily to imprecise knowledge of the cantilever thickness. Tests conducted on microshutter arrays concluded that reducing the Si3N4 thickness from 250 nm to 500 nm reduces the torsional stiffness by a factor of approximately four. This is in good agreement with analytical and finite element models of the microshutters.
Paper Details
Date Published: 28 August 2014
PDF: 8 pages
Proc. SPIE 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI, 917009 (28 August 2014); doi: 10.1117/12.2060449
Published in SPIE Proceedings Vol. 9170:
Nanoengineering: Fabrication, Properties, Optics, and Devices XI
Eva M. Campo; Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)
PDF: 8 pages
Proc. SPIE 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI, 917009 (28 August 2014); doi: 10.1117/12.2060449
Show Author Affiliations
Devin E. Burns, NASA Goddard Space Flight Ctr. (United States)
Justin S. Jones, NASA Goddard Space Flight Ctr. (United States)
Justin S. Jones, NASA Goddard Space Flight Ctr. (United States)
Mary J. Li, NASA Goddard Space Flight Ctr. (United States)
Published in SPIE Proceedings Vol. 9170:
Nanoengineering: Fabrication, Properties, Optics, and Devices XI
Eva M. Campo; Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)
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