一种模拟复杂石墨烯片表面等离子体激元的有限元方法

IF 3.8 2区物理与天体物理 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Journal of Computational Physics Pub Date : 2025-09-15 DOI:10.1016/j.jcp.2025.114372

Jichun Li , Michael Neunteufel , Li Zhu

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引用次数: 0

摘要

表面等离子激元（SPPs）在石墨烯表面产生，并为其主体材料及其介电环境的纳米光学和电动力学响应提供了一个窗口。由于spp通常发生在具有不同介电常数的材料之间的复杂界面上，因此精确模拟spp提出了几个独特的挑战，而石墨烯界面上适当的边界条件至关重要。本文建立了一个简化的石墨烯模型，并提出了一种新的有限元方法。建立了连续模型的稳定性，并给出了大量的数值结果，表明新模型可以很好地捕获各种复杂石墨烯片的spp。

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A novel finite element method for simulating surface plasmon polaritons on complex graphene sheets

Surface plasmon polaritons (SPPs) are generated on the graphene surface, and provide a window into the nano-optical and electrodynamic response of their host material and its dielectric environment. An accurate simulation of SPPs presents several unique challenges, since SPPs often occur at complex interfaces between materials of different dielectric constants and appropriate boundary conditions at the graphene interfaces are crucial. Here we develop a simplified graphene model and propose a new finite element method accordingly. Stability for the continuous model is established, and extensive numerical results are presented to demonstrate that the new model can capture the SPPs very well for various complex graphene sheets.

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来源期刊

Journal of Computational Physics 物理-计算机：跨学科应用

CiteScore

7.60

自引率

14.60%

发文量

763

审稿时长

5.8 months

期刊介绍： Journal of Computational Physics thoroughly treats the computational aspects of physical problems, presenting techniques for the numerical solution of mathematical equations arising in all areas of physics. The journal seeks to emphasize methods that cross disciplinary boundaries. The Journal of Computational Physics also publishes short notes of 4 pages or less (including figures, tables, and references but excluding title pages). Letters to the Editor commenting on articles already published in this Journal will also be considered. Neither notes nor letters should have an abstract.