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Mechanically bi-stable in-plane switch with dual-stiffness actuators
KTH, School of Electrical Engineering (EES), Microsystem Technology.
KTH, School of Electrical Engineering (EES), Microsystem Technology.
KTH, School of Electrical Engineering (EES), Microsystem Technology.ORCID iD: 0000-0001-9552-4234
KTH, School of Electrical Engineering (EES), Microsystem Technology.
2007 (English)In: TRANSDUCERS '07 & EUROSENSORS XXI, DIGEST OF TECHNICAL PAPERS: VOLS 1 AND 2, New York: IEEE , 2007, U709-U710 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents an optimized mechanical multi-spring concept for electrostatic actuators, demonstrated in a lateral curved-electrode configuration for a mechanically interlocking bi-stable switch. The concept features a dual-stiffness mechanism where the actuator is operated in two regimes of different spring constants, which in contrast to conventional actuator mechanisms allows for independently optimizing both the deflection and the force provided during actuation. Further, the non-linear electrostatic force is optimally matched to the linear spring force by the design of the two stiffness regimes. A mechanically bi-stable switch with two separate dual-stiffness cantilevers and a interlocking mechanism has been designed and fabricated in a single photolithographic mask step. The evaluation of the prototype devices has successfully shown the advantages of the dual-stiffness actuator concept.

Place, publisher, year, edition, pages
New York: IEEE , 2007. U709-U710 p.
Keyword [en]
MEMS switches, electrostatic actuators, microrelays, mechanical, bi-stability
National Category
Information Science
Identifiers
URN: urn:nbn:se:kth:diva-13788DOI: 10.1109/SENSOR.2007.4300405ISI: 000249603700348Scopus ID: 2-s2.0-50049102376ISBN: 978-1-4244-0841-2 (print)OAI: oai:DiVA.org:kth-13788DiVA: diva2:328091
Conference
14th International Conference on Solid-State Sensors, Actuators and Microsystems, Lyon, FRANCE, JUN 10-14, 2007
Note
QC 20100701Available from: 2010-07-01 Created: 2010-06-29 Last updated: 2012-01-10Bibliographically approved

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Stemme, Göran

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