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Vol. 34, No. 8(3), S&M3042

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Sensors and Materials
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Sensors and Materials, Volume 17, Number 5 (2005)
Copyright(C) MYU K.K.
pp. 277-288
S&M606 Research Paper of Special Issue
Published: 2005

Mechanical Characterization of Gold Thin Films Based on Strip Bending and Nanoindentation Test for MEMS/NEMS Applications [PDF]

Chang-Wook Baek, Jong-Man Kim, Yong-Kweon Kim, Jae Hyun Kim, Hak Joo Lee and Seung Woo Han

(Received August 24, 2004; Accepted December 4, 2004)

Keywords: MEMS, NEMS, gold thin film, mechanical properties, strip bending test, nanoindentation test

In this paper, we report the mechanical properties of micro/nanometer-thin gold films evaluated by a strip bending technique and a conventional nanoindentation test for micronano- electromechanical systems (MEMS/NEMS) applications. Nanometer-thin freestanding fixed-fixed gold strip specimens with different thicknesses of 200, 500 and 1000 nm have been prepared to observe the effect of size dependence on the mechanical properties. All the specimens are fabricated over the open window in silicon wafers using the metal lift-off and silicon deep etching processes. A strip bending test has been performed on the fabricated freestanding strip specimens using a commercial nanoindenter with a wedgetype indenter tip for applying a line load to the strip. A nanoindentation test has also been performed on the same gold films fixed on the silicon substrate using a nanoindenter with a continuous stiffness measurement (CSM) option. Experimental details of the strip bending test and the measured mechanical properties are introduced. In addition, the results are analyzed to validate the two measurement techniques.

Corresponding author: Chang-Wook Baek


Cite this article
Chang-Wook Baek, Jong-Man Kim, Yong-Kweon Kim, Jae Hyun Kim, Hak Joo Lee and Seung Woo Han, Mechanical Characterization of Gold Thin Films Based on Strip Bending and Nanoindentation Test for MEMS/NEMS Applications, Sens. Mater., Vol. 17, No. 5, 2005, p. 277-288.



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