Computational investigation of label free detection of biomolecules based on armchair graphene nanoribbon

被引：10

作者：

Bagherzadeh-Nobari, S. ^{[1
]}

Kalantarinejad, R. ^{[2
]}

Elahi, S. M. ^{[1
]}

Sanvito, S. ^{[3
,4
]}

机构：

[1] Islamic Azad Univ, Sci & Res Branch, Plasma Phys Res Ctr, Tehran, Iran

[2] Minist Sci Res & Technol, Aerosp Res Inst, Tehran, Iran

[3] Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland

[4] Trinity Coll Dublin, CRANN Inst, Dublin 2, Ireland

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 255卷

关键词：

Graphene nanoribbon; Biosensor; Amino acid; Quantum transport; ELECTRONIC TRANSPORT; GAS; NANOTUBES; DYNAMICS; STATE;

D O I：

10.1016/j.snb.2017.08.113

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We propose here an amino acid nanosensor based on a single armchair graphene nanoribbon (AGNR) connected to two gold electrodes. Using the non-equilibrium Green's function method for quantum transport together with density functional theory, we compute the electrical properties of the sensor before and after the adsorption of different amino acids on the AGNR. Our results show that there is a significant shift of the projected density of states and of the transmission function, T, upon adsorption with a distinct response depending on the specific amino acid. These results suggest that AGNRs may be employed as materials of choice in bio-sensorics. (C) 2017 Published by Elsevier B.V.

引用

页码：1276 / 1284

页数：9

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