Nanostructured electrodes for efficient gas ionization

J. P. Singh; Toh-Ming Lu; Gwo-Ching Wang; Nikhil Koratkar

doi:10.1117/12.594571

16 May 2005 Nanostructured electrodes for efficient gas ionization

J. P. Singh, Toh-Ming Lu, Gwo-Ching Wang, Nikhil Koratkar

Proceedings Volume 5763, Smart Structures and Materials 2005: Smart Electronics, MEMS, BioMEMS, and Nanotechnology; (2005) https://doi.org/10.1117/12.594571
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

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.

Citation Download Citation

J. P. Singh, Toh-Ming Lu, Gwo-Ching Wang, and Nikhil Koratkar "Nanostructured electrodes for efficient gas ionization", Proc. SPIE 5763, Smart Structures and Materials 2005: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (16 May 2005); https://doi.org/10.1117/12.594571

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