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Suppression of Inelastic Deformation in Multilayer Microcantilevers with Nanoscale Coating

  • I-Kuan Lin (a1), Xin Zhang (a2) and Yanhang Zhang (a3)

Abstract

Multilayer microcantilevers present in micro-/nano- electromechanical system (MEMS/NEMS) applications serving passive and active structural roles. The application and commercialization of MEMS devices suffer from reliability problems. Appropriate nanocoatings, such as atomic layer deposition (ALD), have been demonstrated to be promising solutions for these reliability problems in MEMS devices. However, the micro/nano- mechanics within and/or between the microcantilevers and nanocoatings are not fully understood, especially when temperature, time, microstructural evolution and material nonlinearities play significant roles in thermomechanical response. The overall goal of this work is to suppress and understand the inelastic deformation and microstructural evolution in multilayer microcantilevers with nanocoatings. Moreover, to better understand the stress relief and Al2O3 suppression mechanism, scanning electron microscopy (SEM) was employed to explore the microstructural evolution.

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1 Chang, C. L. and Chang, P. Z. Sens. Actuators A79, 71 (2000)
2 Miller, D. C. Herrmann, C. F. Maier, H. J. George, S. M. Stoldt, C. R. and Gall, K., Acta Mech., 52, 873 (2005)
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5 Zhang, Y., Dunn, M. L. J. Microelectromech. Syst., 12, 788 (2003).

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Suppression of Inelastic Deformation in Multilayer Microcantilevers with Nanoscale Coating

  • I-Kuan Lin (a1), Xin Zhang (a2) and Yanhang Zhang (a3)

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