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Electronic transport properties of nanoribbons of graphene and ψ-graphene -based lactate nanobiosensor
Micro and Nanostructures ( IF 3.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.spmi.2020.106603
Nadia Mahmoudi Khatir , Aidin Ahmadi , Narges Taghizade , Samane Motevali khameneh , Mahdi Faghihnasiri

Abstract In this paper, the adsorption of lactate molecules is studied on the two-dimensional structure of graphene and ψ-graphene. First-principle calculations based on density functional theory showed that the absorption energy of the lactate molecule on ψ-graphene is much higher than that of graphene. The monolayer of graphene and ψ-graphene is conductive after the adsorption of lactate molecules. Furthermore, the I-V characteristics based on the non-equilibrium Green's function explain that negative differential resistance occurs in 0.75 V for the absorption of lactate molecules. Based on our findings, AGNR and ZψGNR can be used as the detection of lactate molecule, and ψ-graphene is used as an absorbent of this molecule from the environment.

中文翻译:

石墨烯纳米带和ψ-石墨烯基乳酸纳米生物传感器的电子输运特性

摘要 本文研究了乳酸分子对石墨烯和ψ-石墨烯二维结构的吸附作用。基于密度泛函理论的第一性原理计算表明,乳酸分子在ψ-石墨烯上的吸收能量远高于石墨烯。石墨烯和ψ-石墨烯的单层吸附乳酸盐分子后具有导电性。此外,基于非平衡格林函数的 IV 特性解释了在 0.75 V 时出现负微分电阻以吸收乳酸分子。根据我们的发现,AGNR 和 ZψGNR 可用作乳酸分子的检测,而ψ-石墨烯用作该分子从环境中的吸收剂。
更新日期:2020-09-01
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