Identification of DNA Bases Using Nanopores Created in Finite-Size Nanoribbons from Graphene, Phosphorene, and Silicene

Abstract

The success of graphene for nanopore DNA sequencing has shown that it is possible to explore other potential single-atom and few-atom thick layers of elemental 2D materials beyond graphene (e.g., phosphorene and silicene). Using density functional theory, we studied the interaction of DNA bases with nanopores created in finite-size nanoribbons from graphene, phosphorene, and silicene. We observe that binding energies of DNA bases using nanopores from phosphorene and silicene are generally smaller compared to graphene. The band gaps of phosphorene and silicene are significantly altered due to interaction with DNA bases compared to graphene. Our findings show that phosphorene and silicene are promising alternatives to graphene for DNA base detection using advanced detection principles such as transverse tunneling current measurement.

14 pages

References in corpus (8)

• 2D materials and van der Waals heterostructures
• Graphene: A sub-nanometer trans-electrode membrane
• Superior mechanical flexibility of phosphorene and few-layer black phosphorus
• Tunable optical properties of multilayers black phosphorus thin films
• Transverse conductance of DNA nucleotides in a graphene nanogap from first principles
• Landau levels and magneto-transport property of monolayer phosphorene
• Influence of the environment and probes on rapid DNA sequencing via transverse electronic transport
• The layer impact of DNA translocation through graphene nanopores