Silicene as a new potential DNA sequencing device

Nanotechnology
Rodrigo G Amorim, Ralph H Scheicher

Abstract

Silicene, a hexagonal buckled 2D allotrope of silicon, shows potential as a platform for numerous new applications, and may allow for easier integration with existing silicon-based microelectronics than graphene. Here, we show that silicene could function as an electrical DNA sequencing device. We investigated the stability of this novel nano-bio system, its electronic properties and the pronounced effects on the transverse electronic transport, i.e., changes in the transmission and the conductance caused by adsorption of each nucleobase, explored by us through the non-equilibrium Green's function method. Intriguingly, despite the relatively weak interaction between nucleobases and silicene, significant changes in the transmittance at zero bias are predicted by us, in particular for the two nucleobases cytosine and guanine. Our findings suggest that silicene could be utilized as an integrated-circuit biosensor as part of a lab-on-a-chip device for DNA sequencing.

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Citations

May 24, 2019·Chemical Society Reviews·Wei TaoJong Seung Kim
Aug 4, 2016·Nanotechnology·Fábio A L de SouzaRalph H Scheicher
Jun 21, 2017·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mehdi Shakourian-FardGanesh Kamath
Aug 20, 2018·Journal of Molecular Modeling·Gurleen Kaur Walia, Deep Kamal Kaur Randhawa
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Feb 20, 2016·Nanotechnology·Sourav Kundu, S N Karmakar
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Mar 23, 2021·Journal of Molecular Graphics & Modelling·V Nagarajan, R Chandiramouli
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Dec 13, 2018·ACS Applied Materials & Interfaces·Rameshwar L KumawatBiswarup Pathak
Nov 4, 2021·Physical Chemistry Chemical Physics : PCCP·Ali KiakojouriEbrahim Nadimi

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