title: Analytical calculation of sensing parameters on carbon nanotube based gas sensors.
abstract: Carbon Nanotubes (CNTs) are generally nano-scale tubes comprising a network of carbon atoms in a cylindrical setting that compared with silicon counterparts present outstanding characteristics such as high mechanical strength, high sensing capability and large surface-to-volume ratio. These characteristics, in addition to the fact that CNTs experience changes in their electrical conductance when exposed to different gases, make them appropriate candidates for use in sensing/measuring applications such as gas detection devices. In this research, a model for a Field Effect Transistor (FET)-based structure has been developed as a platform for a gas detection sensor in which the CNT conductance change resulting from the chemical reaction between NH3 and CNT has been employed to model the sensing mechanism with proposed sensing parameters. The research implements the same FET-based structure as in the work of Peng et al. on nanotube-based NH3 gas detection. With respect to this conductance change, the I-V characteristic of the CNT is investigated. Finally, a comparative study shows satisfactory agreement between the proposed model and the experimental data from the mentioned research.
authors.affiliation: Centre for Artificial Intelligence and Robotics (CAIRO), Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia. elnazzz1@gmail.com.
authors.forename: Elnaz
authors.initials: E
authors.lastname: Akbari
authors.affiliation: Institute of High Voltage & High Current, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia. zolkafle@fke.utm.my.
authors.forename: Zolkafle
authors.initials: Z
authors.lastname: Buntat
authors.affiliation: Institute of High Voltage & High Current, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia. mohdhafizi@fke.utm.my.
authors.forename: Mohd Hafizi
authors.initials: MH
authors.lastname: Ahmad
authors.affiliation: Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia. a_enzevaee@yahoo.com.
authors.forename: Aria
authors.initials: A
authors.lastname: Enzevaee
authors.affiliation: Centre for Artificial Intelligence and Robotics (CAIRO), Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia. rubiyah@ic.utm.my.
authors.forename: Rubiyah
authors.initials: R
authors.lastname: Yousof
authors.affiliation: Institute of High Voltage & High Current, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia. zafbwp@yahoo.com.
authors.forename: Syed Muhammad Zafar
authors.initials: SM
authors.lastname: Iqbal
authors.affiliation: Computational Nanoelectronic Research Group Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia. taghi@fke.utm.my.
authors.forename: Mohammad Taghi
authors.initials: MT
authors.lastname: Ahmadi
authors.affiliation: Institute of High Voltage & High Current, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia. abubakar@fke.utm.my.
authors.forename: Muhammad Abu Bakar
authors.initials: MA
authors.lastname: Sidik
authors.affiliation: Centre for Artificial Intelligence and Robotics (CAIRO), Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia. hediyeh.karimi@gmail.com.
authors.forename: Hediyeh
authors.initials: H
authors.lastname: Karimi
mesh_terms: D000327:Adsorption; D000641:Ammonia / Q000032:analysis; D005740:Gases / Q000032:analysis*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013696:Temperature; D014173:Transistors, Electronic
chemical_list: D005740:Gases; D037742:Nanotubes, Carbon; D000641:Ammonia