六边形石墨烯量子等离子体纳米天线传感器

Hexagonal-shaped graphene quantum plasmonic nano-antenna sensor.

作者信息

Kavitha S, Saxena Ravi Shankar, Singh Ashish, Kumari Kamakshi, Aneesh Mohammed

机构信息

Department of Computer & Communication, NMAMIT (Affiliated to Nitte (Deemed to Be University)), Udupi, India.

Department of Electronics and Communication, GMRIT, Rajam, India.

出版信息

Sci Rep. 2023 Nov 6;13(1):19219. doi: 10.1038/s41598-023-46164-2.

DOI:10.1038/s41598-023-46164-2

PMID:37932312

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10628248/

Abstract

In this manuscript, a hexagonal-shaped graphene quantum plasmonic nanopatch antenna sensor is designed and investigated on silicon dioxide, zinc oxide and silicon substrates for quantum plasmonic biosensing applications. The optical properties of graphene are demonstrated using Kubo modeling to analyze the plasmon resonance characteristics of the nanopatch antenna. Nano-circuit modeling of the hexagonal-shaped graphene nano-antenna is proposed and validated using CST simulations. The parametric analysis of the hexagonal-shaped nanopatch antenna is performed using design parameters such as R (radius of the hexagon), T (thickness of the hexagon) and µ (chemical potential of graphene) to obtain optimum characteristics suitable for quantum plasmonic sensing applications. The study demonstrates that the proposed hexagonal-shaped nano-antenna exhibits gain of 4.9 dBi, 2.46 dBi, 14.99 dBi, 8.25 dBi, 5.15 dBi, 10.87 dBi and 2.4 dBi at 29.87 THz, 30 THz, 35 THz, 113.5 THz, 132.5 THz, 85 THz and 24 THz, respectively. The field enhancement factors observed at these frequencies are 794, 779, 584, 255, 234, 654 and 217, respectively.

摘要

在本论文中，设计并研究了一种六边形石墨烯量子等离子体纳米贴片天线传感器，该传感器基于二氧化硅、氧化锌和硅衬底，用于量子等离子体生物传感应用。利用久保模型展示了石墨烯的光学特性，以分析纳米贴片天线的等离子体共振特性。提出了六边形石墨烯纳米天线的纳米电路模型，并通过CST模拟进行了验证。使用诸如R（六边形半径）、T（六边形厚度）和µ（石墨烯的化学势）等设计参数对六边形纳米贴片天线进行参数分析，以获得适合量子等离子体传感应用的最佳特性。研究表明，所提出的六边形纳米天线在29.87太赫兹、30太赫兹、35太赫兹、113.5太赫兹、132.5太赫兹、85太赫兹和24太赫兹时的增益分别为4.9 dBi、2.46 dBi、14.99 dBi、8.25 dBi、5.15 dBi、10.87 dBi和2.4 dBi。在这些频率下观察到的场增强因子分别为794、779、584、255、234、654和217。