a potential sensing mechanism for dna nucleobases by optical properties of go and mos 2 nanopores

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ID: 152246
2019
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Ranked #21 of 107 articles by views in historia de la educación

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Abstract
Abstract We propose a new DNA sensing mechanism based on optical properties of graphene oxide (GO) and molybdenum disulphide (MoS 2) nanopores. In this method, GO and MoS 2 is utilized as quantum dot (QD) nanopore and DNA molecule translocate through the nanopore. A recently-developed hybrid quantum/classical method (HQCM) is employed which uses time-dependent density functional theory and quasi-static finite difference time domain approach. Due to good biocompatibility, stability and excitation wavelength dependent emission behavior of GO and MoS 2 we use them as nanopore materials. The absorption and emission peaks wavelengths of GO and MoS 2 nanopores are investigated in the presence of DNA nucleobases. The maximum sensitivity of the proposed method to DNA is achieved for the 2-nm GO nanopore. Results show that insertion of DNA nucleobases in the nanopore shifts the wavelength of the emitted light from GO or MoS 2 nanopore up to 130 nm. The maximum value of the relative shift between two different nucleobases is achieved by the shift between cytosine (C) and thymine (T) nucleobases, ~111 nm for 2-nm GO nanopore. Results show that the proposed mechanism has a superior capability to be used in future DNA sequencers.
Reference Key
faramarzi2019scientifica Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Vahid Faramarzi, Vahid Ahmadi, Bashir Fotouhi, Mostafa Abasifard
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Journal historia de la educación
Year 2019
DOI
10.1038/s41598-019-41165-6
URL
http://link.springer.com/article/10.1038/s41598-019-41165-6
Keywords
medicinescience

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