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Abstract
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In this paper, we investigate the electrical transport of two-terminal trilayer graphene and silicene flake (bilayer
and monolayer nanoribbons) in the absence and presence of nanopores and DNA molecule by using Green’s
function method. The passage of the DNA molecule through the nanopore significantly changes the transport
properties. It is found that passing double-stranded DNA through trilayer graphene nanopore (tGNP) causes the
metal-semiconductor quantum phase transition and in trilayer silicene nanopore (tSNP) increases the energy gap.
The transport properties of DNA strands passing through nanopores depend on the thickness of the nanopores,
the leads and the location of the electrodes. It has been shown that in tSNP and tGNP the energy gap with
monolayer connections is larger than that of the bilayer connections. The computational results show reduction
in electron transmission for both types of nanopores. These results can be useful for making a DNA sequencing
devices.
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