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.

在本文中，我们使用格林函数方法研究了在不存在和存在纳米孔和DNA分子的情况下，两末端三层石墨烯和硅薄片（双层和单层纳米带）的电迁移。DNA分子通过纳米孔的通道显着改变了运输性质。发现双链DNA穿过三层石墨烯纳米孔（tGNP）会导致金属-半导体量子相变，而在三层硅纳米孔（tSNP）中会增加能隙。穿过纳米孔的DNA链的传输特性取决于纳米孔的厚度，引线和电极的位置。已经表明，在tSNP和tGNP中，具有单层连接的能隙大于双层连接的能隙。计算结果表明，两种类型的纳米孔的电子传输都减少了。这些结果对于制造DNA测序装置可能是有用的。