Multilevel States of Nano-Electromechanical Switch for a PUF-Based Security Device

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A nano-electromechanical (NEM) switch using multilevel states based on the high security physical unclonable function (PUF) is proposed and experimentally demonstrated. Using the asymmetric random stiction of a silicon nanowire (SiNW), the conventional binary state is simply expanded to a quaternary-state encryption key without increasing chip area. The multiple states are determined by the asymmetrically bent direction and stiction of the SiNW. The experimental results show that the fabricated NEM-PUF with multistates retains unique, random, and robust characteristics, while the key capacity is doubled, even with the same array size footprint.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2019-01
Language
English
Article Type
Article
Citation

SMALL, v.15, no.3

ISSN
1613-6810
DOI
10.1002/smll.201803825
URI
http://hdl.handle.net/10203/250401
Appears in Collection
EE-Journal Papers(저널논문)
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