Rectilinear Electrothermal Actuator Using High-Aspect-Ratio Micromachined Composite of SU-8 and Silicon

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Abstract:

A precisely rectilinear electrothermal actuator integrated with highly thermally expandable micromachined composites of SU-8 and silicon is presented. The actuator is capable of producing a maximum output rectilinear displacement of 42 μm with an estimated blocked force of up to 61 mN. The actuator operates at a low temperature rise of less than 266 °C and at input voltage of less than 15 V. Thermal time constant of the actuator is measured to be less than 3 ms. Such a powerful and power-efficient actuator could benefits future devices in optical MEMS.

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28-33

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September 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] M. Datta et al, Tunable optical filters for in-plane integration on InP MEMS platform. SPIE (2005).

Google Scholar

[2] C.W. Wong et al, Strain-tunable silicon photonic band gap microcavities in optical waveguide, Appl. Phys. Lett. 84 (2004) 1242-1244.

DOI: 10.1063/1.1649803

Google Scholar

[3] W. Park, J.B. Lee, Mechanically tunable photonic crystal structure, Appl. Phys. Lett. 85 (2004) 4845-47.

DOI: 10.1063/1.1823019

Google Scholar

[4] T.C. Duc, G.K. Lau, and P.M. Sarro, Polymer constraint effect for electrothermal bimorph microactuators, Appl. Phys. Lett. 91 (2007) 101902.

DOI: 10.1063/1.2779929

Google Scholar

[5] G.K. Lau et al, Polymeric thermal microactuator with embedded silicon skeleton: Part I - Design and analysis, J. MEMS 17(4) (2008) 809-822.

DOI: 10.1109/jmems.2008.924842

Google Scholar

[6] A.M. Kwan et al, Designs for improving the performance of an electro-thermal in-plane actuator, IEEE VLSI-SoC (2011) 220-225.

Google Scholar

[7] J.J. Khazaai et al, Displacment amplification and latching mechanism using V-shape actuators in design of electro-thermal MEMS switches. IEEE SENSORS (2010)

DOI: 10.1109/icsens.2010.5690374

Google Scholar

[8] R. Legtenberg, A.W. Groeneveld, and M. Elwenspoek, Comb-drive actuators for large displacements. J. Micromech. Microeng. 6(3) (1996) 320-329.

DOI: 10.1088/0960-1317/6/3/004

Google Scholar

[9] W. Benenson et al, Handbook of physics, Springer New York 2002.

Google Scholar

[10] E.V. Ardelean, D.G. Cole, and R.L. Clark, High Performance ''V-stack''Piezoelectric Actuator. J. Intelli. Mat. Syst. Struct. 15(11) (2004) 879-889.

DOI: 10.1177/1045389x04045150

Google Scholar