Investigation and comparison of graphene nanoribbon and carbon nanotube based SARS-CoV-2 detection sensors: An ab initio study

被引：6

作者：

Yamacli, Serhan ^{[1
]}

Avci, Mutlu ^{[2
]}

机构：

[1] Nuh Naci Yazgan Univ, Dept Elect Elect Engn, Kayseri, Turkiye

[2] Cukurova Univ, Dept Biomed Engn, Adana, Turkiye

来源：

PHYSICA B-CONDENSED MATTER | 2023年 / 648卷

关键词：

SARS-CoV-2; Sensor; Graphene nanoribbon; Carbon nanotube; PBASE linker; Antibody; IN-SILICO DESIGN; PYRENEBUTYRIC ACID; SPIKE PROTEIN; PLATFORM; FUNCTIONALIZATION; IMMOBILIZATION; NANOCOMPOSITE; FORMALDEHYDE; MOLECULE; BEHAVIOR;

D O I：

10.1016/j.physb.2022.414438

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The rapid detection of SARS-CoV-2, the pathogen of the Covid-19 pandemic, is obviously of great importance for stopping the spread of the virus by detecting infected individuals. Here, we report the ab initio analysis results of graphene nanoribbon (GNR) and carbon nanotube (CNT) based SARS-CoV-2 detection sensors which are experimentally demonstrated in the literature. The investigated structures are the realistic molecular models of the sensors that are employing 1-pyrenebutyric acid N-hydroxysuccinimide ester as the antibody linker. Density functional theory in conjunction with non-equilibrium Green's function formalism (DFT-NEGF) is used to obtain the transmission spectra, current-voltage and resistance-voltage characteristics of the sensors before and after the attachment of the SARS-CoV-2 spike protein. The operation mechanism of the GNR and CNT based SARS-CoV-2 sensors are exposed using the transmission spectrum analysis. Moreover, it is observed that GNR based sensor has more definitive detection characteristics compared to its CNT based counterpart.

引用

页数：8

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