بررسی نانوساختارهای گرافن و سیلیسین–DNA به‌عنوان حسگر DNA

محمدی, سعیده; اسماعیل پور, محمد; خوئینی, فرهاد

doi:10.22055/jrmbs.2020.15567

بررسی نانوساختارهای گرافن و سیلیسین–DNA به‌عنوان حسگر DNA

نوع مقاله : مقاله پژوهشی کامل

نویسندگان

¹ گروه فیزیک، دانشگاه شهید مدنی آذربایجان، تبریز، ایران

² گروه فیزیک، دانشگاه زنجان، زنجان، ایران

10.22055/jrmbs.2020.15567

چکیده

در این مقاله ترابرد الکتریکی نانوساختارهای گرافن و سیلیسین متصل شده به دو الکترود نیمه بینهایت نانونوار گرافن و سیلیسین بررسی شده است. در این ساختارها نانوحفره ایجاد کرده ومولکول DNA را از نانو حفره عبور دادیم. با استفاده از روش تابع گرین و تقریب تنگ‌بست، دو نوع سامانه با لبه‌های زیگزاگ در گرافن و سیلیسین مورد بررسی قرار گرفته است. با اتصال نانونوارها به الکترودهای فلزی جریان ایجاد شده از سمت چپ به راست از نانوحفره و DNA عبور می‌کند. این عبور جریان الکتریکی باعث افزایش حساسیت سیستم به بازهای آلی DNA می‌شود. ما یک طرح جدید برای تعیین توالی DNA ارائه نمودیم.

کلیدواژه‌ها

موضوعات

ماده چگال

عنوان مقاله [English]

Investigation of Graphene and Silicene-DNA nanostructures: DNA Sensing

نویسندگان [English]

saeedeh mohammadi ¹
mohammad esmailpour ¹
Farhad Khoeini ²

¹ 1Department of Physics, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz, Iran

² Department of Physics, University of Zanjan, 45195-313, Zanjan, Iran

چکیده [English]

In this paper, the electrical transport of graphene and silicene nanostructures connected to two semi-infinite graphene and silicene electrodes have been investigated. In these structures, we created nanopores and passed the DNA molecule through the nanopore. Using the Green's Function method and Tight binding approximation, two types of systems with zigzag edges in graphene and silicene have been investigated. By connecting the nanoribbons to the metal electrodes, the created current passes from the nanopore and DNA, from the left to the right. This electric current flow increases the system's sensitivity to the organic DNA bases. We have introduced a new scheme for DNA sequencing.

کلیدواژه‌ها [English]

Nanoribbon graphene and silicene
DNA molecule
Electrical properties
Green’s function method

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