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. 2018 May 16;8:7734. doi: 10.1038/s41598-018-25824-8

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Screen printed gold electrode (SPGE). (b) Stepwise representation of the fabrication of SPGE with MoS₂ nanosheets, probe DNA and target DNA. (c) Interaction of working electrode (Au) of SPGE and MoS₂ shows strong affinity between Au (SPGE) and S (MoS₂). (d) MoS₂ interacts with probe DNA via Vander Waals forces. (e) Principle for the detection of hybridization of target DNA via redox hybridization indicator, i.e., methylene blue.