Deformable carbon nanotube-contact pads for inertial microswitch to extend contact time

Jae Ik Lee; Youngsup Song; Hakkyun Jung; Jungwook Choi; Youngkee Eun; Jongbaeg Kim

doi:10.1109/TIE.2011.2163918

Deformable carbon nanotube-contact pads for inertial microswitch to extend contact time

Jae Ik Lee, Youngsup Song, Hakkyun Jung, Jungwook Choi, Youngkee Eun, Jongbaeg Kim

Department of Mechanical Engineering

Research output: Contribution to journal › Article

33 Citations (Scopus)

Abstract

We have demonstrated a batch-fabricated inertial microswitch with extended contact time using carbon nanotube (CNT)-contact pads. Self-assembled and aligned CNT bundles, as deformable electromechanical contact pads are selectively synthesized on fully fabricated single crystal silicon microstructures. Outstanding mechanical flexibility and resilience, as well as electrical conductivity of CNTs, make them suitable as an electromechanical contact material. It is experimentally verified that the elastic deformation of CNTs dramatically enhances the contact time of the inertial microswitch from 7.5 μs to 114 μs. Due to the prolonged contact time, the presented inertial microswitch provides reliable and easy detection of threshold acceleration, which is crucial in diverse commercial applications such as airbag restraint systems in vehicles or geriatric healthcare systems.

Original language	English
Article number	5977025
Pages (from-to)	4914-4920
Number of pages	7
Journal	IEEE Transactions on Industrial Electronics
Volume	59
Issue number	12
DOIs	https://doi.org/10.1109/TIE.2011.2163918
Publication status	Published - 2012 Jul 17

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Electrical and Electronic Engineering

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10.1109/TIE.2011.2163918

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Lee, J. I., Song, Y., Jung, H., Choi, J., Eun, Y., & Kim, J. (2012). Deformable carbon nanotube-contact pads for inertial microswitch to extend contact time. IEEE Transactions on Industrial Electronics, 59(12), 4914-4920. [5977025]. https://doi.org/10.1109/TIE.2011.2163918

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