I-V characteristics on G4 DNA molecule: Electric field and current dependent hopping amplitude model

E. N. Sinurat; E. Yudiarsah

doi:10.1088/1757-899X/578/1/012023

I-V characteristics on G4 DNA molecule: Electric field and current dependent hopping amplitude model

E. N. Sinurat, E. Yudiarsah

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We study the charge transport property of G4 DNA molecule by calculating the I-V characteristics at several temperatures. The G4 DNA we used consists of 32 G-tetrads built from four guanine bases and is contacted to metallic electrodes at both ends. The molecule is represented mathematically by using tight binding Hamiltonian model. Miller-abrahams scheme is used in calculating electron hopping constant under electric field which is applied along the molecular axis of DNA. Temperature is considered in the model by assuming twisting angles are distributed following Gaussian distribution. The current as voltage function is calculated using Landauer-Buttiker formalism from transmission probabilities. The result show that twisting motion due thermal agitation weakens the effect of electric field.

Original language	English
Article number	012023
Journal	IOP Conference Series: Materials Science and Engineering
Volume	578
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/578/1/012023
Publication status	Published - 4 Oct 2019
Event	3rd International Conference on Advanced Material for Better Future 2018, ICAMBF 2018 - Surakarta, Central Java, Indonesia Duration: 15 Oct 2018 → 16 Oct 2018

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10.1088/1757-899X/578/1/012023

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title = "I-V characteristics on G4 DNA molecule: Electric field and current dependent hopping amplitude model",

abstract = "We study the charge transport property of G4 DNA molecule by calculating the I-V characteristics at several temperatures. The G4 DNA we used consists of 32 G-tetrads built from four guanine bases and is contacted to metallic electrodes at both ends. The molecule is represented mathematically by using tight binding Hamiltonian model. Miller-abrahams scheme is used in calculating electron hopping constant under electric field which is applied along the molecular axis of DNA. Temperature is considered in the model by assuming twisting angles are distributed following Gaussian distribution. The current as voltage function is calculated using Landauer-Buttiker formalism from transmission probabilities. The result show that twisting motion due thermal agitation weakens the effect of electric field.",

author = "Sinurat, {E. N.} and E. Yudiarsah",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; 3rd International Conference on Advanced Material for Better Future 2018, ICAMBF 2018 ; Conference date: 15-10-2018 Through 16-10-2018",

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T1 - I-V characteristics on G4 DNA molecule

T2 - 3rd International Conference on Advanced Material for Better Future 2018, ICAMBF 2018

AU - Sinurat, E. N.

AU - Yudiarsah, E.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2019/10/4

Y1 - 2019/10/4

N2 - We study the charge transport property of G4 DNA molecule by calculating the I-V characteristics at several temperatures. The G4 DNA we used consists of 32 G-tetrads built from four guanine bases and is contacted to metallic electrodes at both ends. The molecule is represented mathematically by using tight binding Hamiltonian model. Miller-abrahams scheme is used in calculating electron hopping constant under electric field which is applied along the molecular axis of DNA. Temperature is considered in the model by assuming twisting angles are distributed following Gaussian distribution. The current as voltage function is calculated using Landauer-Buttiker formalism from transmission probabilities. The result show that twisting motion due thermal agitation weakens the effect of electric field.

AB - We study the charge transport property of G4 DNA molecule by calculating the I-V characteristics at several temperatures. The G4 DNA we used consists of 32 G-tetrads built from four guanine bases and is contacted to metallic electrodes at both ends. The molecule is represented mathematically by using tight binding Hamiltonian model. Miller-abrahams scheme is used in calculating electron hopping constant under electric field which is applied along the molecular axis of DNA. Temperature is considered in the model by assuming twisting angles are distributed following Gaussian distribution. The current as voltage function is calculated using Landauer-Buttiker formalism from transmission probabilities. The result show that twisting motion due thermal agitation weakens the effect of electric field.

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U2 - 10.1088/1757-899X/578/1/012023

DO - 10.1088/1757-899X/578/1/012023

M3 - Conference article

AN - SCOPUS:85074755431

SN - 1757-8981

VL - 578

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

IS - 1

M1 - 012023

Y2 - 15 October 2018 through 16 October 2018

ER -

I-V characteristics on G4 DNA molecule: Electric field and current dependent hopping amplitude model

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