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Proceedings Paper

A critical comparison and development of nano-mechanical characterization of MEMS/NEMS thin film materials
Author(s): Johnny H. He; H. R. Le; J. K. Luo; Y. Q. Fu; D. F. Moore
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Paper Abstract

This paper compared the three different methods for determination of thin film modulus or MEMS applications: 1) scanning bending cantilever, 2) nanoindentation and 3) resonance frequency method. Surface profilometer was used to scan along the micro-machined cantilevers at different loads and produce the bending profile, from which the Youngss modulus can be extracted. Indentation profiled produced by Nano-indenter can deduce Young's modulus and hardness of the thin film materials. AFM vibrometer is used to detect the resonance of the thin film cantilever, from which the stiffness, and therefore the Young's modulus can be derived. The material properties of silicon nitride characterized by three methods are consistent and comparable with one another. The following MEMS materials: SiN, Ni, Ni/SiN bimorph, Nano-Diamond, SiC have been characterized and compared by using different method. Their advantages and disadvantages are also discussed.

Paper Details

Date Published: 5 January 2006
PDF: 11 pages
Proc. SPIE 6111, Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS V, 61110T (5 January 2006); doi: 10.1117/12.647295
Show Author Affiliations
Johnny H. He, Institute of Microelectronics (Singapore)
H. R. Le, Univ. of Cambridge (United Kingdom)
J. K. Luo, Univ. of Cambridge (United Kingdom)
Y. Q. Fu, Univ. of Cambridge (United Kingdom)
D. F. Moore, Univ. of Cambridge (United Kingdom)

Published in SPIE Proceedings Vol. 6111:
Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS V
Danelle M. Tanner; Rajeshuni Ramesham, Editor(s)

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