Open AccessTheoretical Investigation of Base Pairs-Dependent Electron Transport in DNA System
Author(s) -
Alaa Ayad K. Al-mebir,
Shakir A. A. AL-Saidi
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1530/1/012147
Subject(s) - dna , base pair , conductance , bioelectronics , dna sequencing , a dna , molecule , electron , base (topology) , nonlinear system , nanotechnology , biophysics , physics , biology , genetics , materials science , mathematics , quantum mechanics , condensed matter physics , mathematical analysis , biosensor
DNA molecules contain high density genetic information that make them beside their self-assembly and self-recognition properties very remarkable topics for many scientific majors, such as medicine, biology and nanotechnology. The mechanism of electron mobility through DNA is important to study DNA-based molecular electronics in nano-bioelectronics. In this study, the influence of number of base pairs on transmission probability, conductance and current for a DNA system has been investigated by using a tight-binding model. Two DNA sequences, (G/C) and (A/T), was studied using the steady state formalism. One active region of DNA molecules assumed to be represented by a fishbone model. The behavior of transmission spectrum ( T ) was discussed for both DNA sequences as a function of the number of base pairs ( N ). In addition, a nonlinear behavior of the current ( I ) was found by studying I-N curves. Further, the resistance-dependent of number of base pairs is also discussed to describe the resistance behavior and values for both DNA sequences. It demonstrates that the resistance-dependent of number of base pairs represented by nonlinear dependent with small different in its values, and the two DNA sequences gives different R-N curve characteristics.