@inproceedings{682437b4861b44ff8565b031d1ebab8e,
title = "Molecular modeling of biomolecular hydrogen gas sensor using GaAs nanopore electrode",
abstract = "{\textcopyright} 2016 IEEE.This article presents an atomic scale model of single strand DNA based Hydrogen gas sensor using Density Functional Theory conjugated with Non-Equilibrium Green's Function based first principle approach. This device is designed to detect the presence of Hydrogen gas through its current-voltage response and by change in conductivity. The quantum transport property of the gas sensor shows that when the DNA molecules adsorbed Hydrogen gas then the quantum transmission of the biomolecules has been increased even at room temperature operation. The adsorbed gas particles play an important role in the quantum ballistic transmission of the biomolecular gas sensor which results in the creation of sharp transmission peaks near Fermi level. Though weak coupling exists between the biomolecules and electrodes in the Coulomb-blockade regime but still it encourages incoherent transmission which results in sequential tunneling. During Hydrogen gas adsorption the tunneling capability is modified and results in strong quantum transmission. Single strand DNA is able to detect the presence of Hydrogen gas when it is coupled with a Gallium Arsenide nanopore two probe electrodes. First principle results reveal that significantly large current is achieved due to the sensitivity of the DNA molecules in the presence of Hydrogen gas. These theoretical analyses suggest that DNA is able to detect and monitor the presence of Hydrogen atoms after charge stabilization in Coulomb-blockade regime and also under controlled bias voltages. The current and conductivity of the biomolecules increase dramatically upon the adsorption of Hydrogen, which suggests that this system has potential application as a biomolecular sensor.",
author = "D. Dey and P. Roy and Debashis De and T. Ghosh",
year = "2016",
month = sep,
day = "16",
doi = "10.1109/ICDCSyst.2016.7570590",
language = "English",
isbn = "9781509023097",
series = "Proceedings of the 3rd International Conference on Devices, Circuits and Systems, ICDCS 2016",
publisher = "IEEE, Institute of Electrical and Electronics Engineers",
pages = "184--188",
booktitle = "Proceedings of the 3rd International Conference on Devices, Circuits and Systems",
address = "United States",
note = "3rd International Conference on Devices, Circuits and Systems : ICDCS 2016 ; Conference date: 03-03-2016 Through 05-03-2016",
}