A low pressure gas ionization sensor using freestanding gold nanowires

Ramin Banan Sadeghian; Mojtaba Kahrizi

doi:10.1109/ISIE.2007.4374803

A low pressure gas ionization sensor using freestanding gold nanowires

Ramin Banan Sadeghian, Mojtaba Kahrizi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Citations (Scopus)

Abstract

Freestanding gold nanowires (AuNWs) were grown by electrochemically filling the nanoscale pores of anodic aluminum oxide (AAO) membranes, and removing the membrane selectively. The array of vertically-aligned AuNWs was used at one of the electrodes of a capacitor-like gas ionizing cell, while the counter electrode was a polished silicon wafer coated with aluminum. The field enhancement property of high aspect-ratio AuNWs was employed to reduce the gaseous breakdown voltage (V_b) at room temperature. The device was operated in low-pressure gas to study the effect of AuNWs on pre-breakdown current, and tested in sub-torr argon, where it demonstrated considerable reduction in the breakdown voltage compared to uniform field conditions. The effect of nanowire polarity on V_b and the pre-breakdown discharge current was also studied.

Original language	English
Title of host publication	2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Proceedings
Pages	1387-1390
Number of pages	4
DOIs	https://doi.org/10.1109/ISIE.2007.4374803
Publication status	Published - 2007 Dec 1
Event	2007 IEEE International Symposium on Industrial Electronics, ISIE 2007 - Caixanova - Vigo, Spain Duration: 2007 Jun 4 → 2007 Jun 7

Publication series

Name	IEEE International Symposium on Industrial Electronics

Other

Other	2007 IEEE International Symposium on Industrial Electronics, ISIE 2007
Country/Territory	Spain
City	Caixanova - Vigo
Period	07/6/4 → 07/6/7

Keywords

Field enhancement effect
Freestanding gold nanowires
Gas ionization sensor

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/ISIE.2007.4374803

Cite this

A low pressure gas ionization sensor using freestanding gold nanowires. / Sadeghian, Ramin Banan; Kahrizi, Mojtaba.

2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Proceedings. 2007. p. 1387-1390 4374803 (IEEE International Symposium on Industrial Electronics).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sadeghian, RB & Kahrizi, M 2007, A low pressure gas ionization sensor using freestanding gold nanowires. in 2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Proceedings., 4374803, IEEE International Symposium on Industrial Electronics, pp. 1387-1390, 2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Caixanova - Vigo, Spain, 07/6/4. https://doi.org/10.1109/ISIE.2007.4374803

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abstract = "Freestanding gold nanowires (AuNWs) were grown by electrochemically filling the nanoscale pores of anodic aluminum oxide (AAO) membranes, and removing the membrane selectively. The array of vertically-aligned AuNWs was used at one of the electrodes of a capacitor-like gas ionizing cell, while the counter electrode was a polished silicon wafer coated with aluminum. The field enhancement property of high aspect-ratio AuNWs was employed to reduce the gaseous breakdown voltage (Vb) at room temperature. The device was operated in low-pressure gas to study the effect of AuNWs on pre-breakdown current, and tested in sub-torr argon, where it demonstrated considerable reduction in the breakdown voltage compared to uniform field conditions. The effect of nanowire polarity on Vb and the pre-breakdown discharge current was also studied.",

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A low pressure gas ionization sensor using freestanding gold nanowires

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