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Proceedings Paper

Nanostructured electrodes for efficient gas ionization
Author(s): J. P. Singh; Toh-Ming Lu; Gwo-Ching Wang; Nikhil Koratkar
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Paper Abstract

We investigate Tungsten (W) nanorod electrodes as gas ionizers. These W nanorods having square-base pyramidal apexes are grown using a glancing angle sputter deposition technique with substrate rotation. We show that few tens of volts of anode voltage applied to the W nanorods are sufficient to ionize a range of different gas species including Ar, CO2, N2 and O2. A distinct ionization onset voltage is observed for each individual gas specie, which suggests that these nanostructured ionization devices may be useful for gas sensing applications. In addition, the low anode voltage and high ion currents observed in this study indicates that the gas ionization devices could be operated using commercially available off-the-shelf batteries.

Paper Details

Date Published: 16 May 2005
PDF: 9 pages
Proc. SPIE 5763, Smart Structures and Materials 2005: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (16 May 2005); doi: 10.1117/12.594571
Show Author Affiliations
J. P. Singh, Rensselaer Polytechnic Institute (United States)
Toh-Ming Lu, Rensselaer Polytechnic Institute (United States)
Gwo-Ching Wang, Rensselaer Polytechnic Institute (United States)
Nikhil Koratkar, Rensselaer Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 5763:
Smart Structures and Materials 2005: Smart Electronics, MEMS, BioMEMS, and Nanotechnology
Vijay K. Varadan, Editor(s)

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