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J. Vac. Sci. Technol. B 15, 1 (1997); http://dx.doi.org/10.1116/1.589247 (20 pages)

Critical Review: Adhesion in surface micromechanical structures

Roya Maboudian1 and Roger T. Howe2

1Berkeley Sensor and Actuator Center, and Department of Chemical Engineering, University of California, Berkeley, California 94720
2Berkeley Sensor and Actuator Center, Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720

We present a review on the state of knowledge of surface phenomena behind adhesion in surface micromechanical structures. After introducing the problem of release-related and in-use adhesion, a theoretical framework for understanding the various surface forces that cause strong adhesion of micromechanical structures is presented. Various approaches are described for reducing the work of adhesion. These include surface roughening and chemical modification of polycrystalline silicon surfaces. The constraints that fabrication processes such as release, drying, assembly, and packaging place on surface treatments are described in general. Finally, we briefly outline some of the important scientific and technological issues in adhesion and friction phenomena in micromechanical structures that remain to be clarified. © 1997 American Vacuum Society.

© 1997 American Vacuum Society

KEYWORDS and PACS

PACS

  • 68.35.Gy

    Mechanical properties; surface strains

  • 07.10.Cm

    Micromechanical devices and systems

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PUBLICATION DATA

ISSN

0734-211X (print)  

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