On the size-dependent behavior of the micro-wire in the micro-tensile test

Seonghyun Ko; Bongbu Jung; Hunkee Lee; Hyunchul Park

doi:10.1117/12.720751

11 April 2007 On the size-dependent behavior of the micro-wire in the micro-tensile test

Seonghyun Ko, Bongbu Jung, Hunkee Lee, Hyunchul Park

Proceedings Volume 6528, Nanosensors, Microsensors, and Biosensors and Systems 2007; 65281M (2007) https://doi.org/10.1117/12.720751
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

Micro-wires have used widely in microelectronic devices. In order to support the high performance of microsystems, it is important to measure the mechanical properties of the micro-wires. In this study, we measured the mechanical properties of micro-wire to investigate the size effect behavior experimentally. Specimens used in this study are platinum micro-wires that have various diameters such as 15, 25, 40, 50, 125, 200, and 250 &mgr;m. The platinum micro-wires with the purity of 99.99 % were annealed to remove the residual stress. We carried out the tensile test to measure the mechanical properties using the nanoUTM and TYTRON 250. Many researches in micro scale structures have shown that the deformation is dependent on the size of specimen as well as grain size. To evaluate the size effect, we focused on the relation between the strength and the specimen diameter. Our result shows that the strength of the specimen changes as its diameter changes. We are trying to investigate micro-structure of the specimen such as grain boundary to explain this size-dependent behavior.

Citation Download Citation

Seonghyun Ko, Bongbu Jung, Hunkee Lee, and Hyunchul Park "On the size-dependent behavior of the micro-wire in the micro-tensile test", Proc. SPIE 6528, Nanosensors, Microsensors, and Biosensors and Systems 2007, 65281M (11 April 2007); https://doi.org/10.1117/12.720751

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