用于探测中红外频率\(\text {NO}_2\)气体的阶梯石墨烯覆盖等离子体偶极子天线

IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Mohammad Mahdi Ghods, Majid Afsahi
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引用次数: 0

摘要

本文提出了一种石墨烯基等离子体天线,用于化学掺杂的气体传感器。所提出的结构具有周期几何。原理设计是基于操纵偶极等离子体天线的几何形状来增强天线间隙中的电场,因为由于分子吸附而导致石墨烯费米能量的微小变化会导致衍射光谱的共振波长发生显着变化。结果表明,该传感器能够检测到大约1160个分子的\(\text {NO}_2\)气体,其透射光谱中的共振波长偏移步长为15.07 nm。相信这种传感结构为实现多种石墨烯基光子传感器打开了一扇新的窗口,在生物、医学和化学等领域具有潜在的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Stepped graphene-covered plasmonic dipole antenna for detecting \(\text {NO}_2\) gas at mid-infrared frequencies

Stepped graphene-covered plasmonic dipole antenna for detecting \(\text {NO}_2\) gas at mid-infrared frequencies

In this paper, a graphene-based plasmonic antenna is presented to operate as a gas senor based on chemical doping. The proposed structure has a periodic geometry. The principle design is based on manipulating the dipole plasmonic antenna geometry to enhance the electric field in the gap of the antenna as a small change of graphene Fermi energy because of the molecules adsorption results in a significant shift of the resonance wavelength of the diffraction spectrum. The results demonstrate that the proposed sensor enables the detection of \(\text {NO}_2\) gas by around 1160 molecules with steps of 15.07 nm of the resonance wavelength shifts in the transmission spectrum. It is believed that this sensing structure could open a new window to realize a variety of graphene-based photonic sensors, for potential applications in the fields of biology, medicine, and chemistry.

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来源期刊
Journal of Computational Electronics
Journal of Computational Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED
CiteScore
4.50
自引率
4.80%
发文量
142
审稿时长
>12 weeks
期刊介绍: he Journal of Computational Electronics brings together research on all aspects of modeling and simulation of modern electronics. This includes optical, electronic, mechanical, and quantum mechanical aspects, as well as research on the underlying mathematical algorithms and computational details. The related areas of energy conversion/storage and of molecular and biological systems, in which the thrust is on the charge transport, electronic, mechanical, and optical properties, are also covered. In particular, we encourage manuscripts dealing with device simulation; with optical and optoelectronic systems and photonics; with energy storage (e.g. batteries, fuel cells) and harvesting (e.g. photovoltaic), with simulation of circuits, VLSI layout, logic and architecture (based on, for example, CMOS devices, quantum-cellular automata, QBITs, or single-electron transistors); with electromagnetic simulations (such as microwave electronics and components); or with molecular and biological systems. However, in all these cases, the submitted manuscripts should explicitly address the electronic properties of the relevant systems, materials, or devices and/or present novel contributions to the physical models, computational strategies, or numerical algorithms.
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