Silicene as a new ultrafast DNA sequencing device
arXiv:1404.2706 · doi:10.1088/0957-4484/26/15/154002
Abstract
Silicene, a hexagonal buckled 2-D 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 ultrafast 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.
References in corpus (21)
- Electric Field Effect in Atomically Thin Carbon Films
- Density functional method for nonequilibrium electron transport
- Van der Waals Density Functional for General Geometries
- Two and one-dimensional honeycomb structures of silicon and germanium
- Efficient implementation of a van der Waals density functional: Application to double-wall carbon nanotubes
- Graphene: A sub-nanometer trans-electrode membrane
- Epitaxial Growth of a Silicene Sheet
- Evidence of silicene in honeycomb structures of silicon on Ag(111)
- DNA Translocation through Graphene Nanopores
- Electronic structure of silicon-based nanostructures
- Growth of silicene layers on Ag(111): unexpected effect of the substrate temperature
- Physisorption of Nucleobases on Graphene
- Physisorption of DNA nucleobases on h-BN and graphene: vdW-corrected DFT calculations
- DNA nucleotide-specific modulation of μA transverse edge currents through a metallic graphene nanoribbon with a nanopore
- Transverse conductance of DNA nucleotides in a graphene nanogap from first principles
- Theoretical Study of Physisorption of Nucleobases on Boron Nitride Nanotubes: A New Class of Hybrid Nano-Bio Materials
- Transverse Electronic Transport through DNA Nucleotides with Functionalized Graphene Electrodes
- Enhanced DNA sequencing performance through edge-hydrogenation of graphene electrodes
- Silicene-based DNA Nucleobase Sensing
- The layer impact of DNA translocation through graphene nanopores
- Graphene Nanogap for Gate Tunable Quantum Coherent Single Molecule Electronics