Effects of CNT density variation in field emission model of ionization gas sensor

Mahmood, S. and Burhanudin, Z.A. and Hamid, N.H. (2011) Effects of CNT density variation in field emission model of ionization gas sensor. In: UNSPECIFIED.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

A new model to study the gas detection mechanism of carbon nanotube (CNT) based ionization gas sensor has been developed. The model incorporates electron field emission property of the CNTs. The CNT density and aspect ratio variations which are major factors involved in the field emission are also included. The CNT field emission is controlled with density and aspect ratio parameters in the model. The model is then embedded in the standard Particle-In-Cell/Monte-Carlo- Collision (PIC-MCC) codes. With the help of these enhanced PIC-MCC codes the simulation of gas breakdown behaviour with CNT field emission and density variation effects become possible for the first time. From the simulations, it is observed that the electrostatic screening effects are reduced and the field emission is high for the moderate CNT density on the electrode. © 2011 IEEE.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 1; Conference of 2011 IEEE Regional Symposium on Micro and Nano Electronics, RSM 2011 ; Conference Date: 28 September 2011 Through 30 September 2011; Conference Code:87842
Uncontrolled Keywords: Density variations; Electron field emission properties; Electrostatic screening; Emission model; Gas breakdown; Gas detection; Ionization gas sensors; Major factors; New model; Particle-in-cell, Aspect ratio; Carbon nanotubes; Codes (symbols); Field emission; Gas detectors; Leakage currents; Sensors, Ionization of gases
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 15:49
Last Modified: 09 Nov 2023 15:49
URI: https://khub.utp.edu.my/scholars/id/eprint/1427

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