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Tailoring the Number of Junctions per Electrode Pair in Networked ZnO Nanowire Sensors
Author(s) -
Park Jae Young,
Choi SunWoo,
Kim Sang Sub
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04597.x
Subject(s) - nanowire , electrode , materials science , nanotechnology , nanogenerator , optoelectronics , vapor phase , chemistry , composite material , physics , piezoelectricity , thermodynamics
Networked ZnO nanowire sensors have been fabricated via selective growth of ZnO nanowires by the vapor growth method. The number of junctions per electrode pair ( NJE ) was deliberately controlled by changing the spacing of interdigital electrodes. Its effects on the sensing properties to NO 2 and CO were investigated. As the NJE increased, superior sensing properties were attained. This novel method to fabricate gas sensors using vapor‐phase grown nanowires may circumvent the drawbacks of single nanowire gas sensors. Importantly, the NJE needs to be tuned to fully exploit networked nanowires in gas sensors.