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设计了一个三角缺口三角形破缺纳米结构,它是从正三角形底边切掉一个三角切片所构成.应用离散偶极子近似方法研究了其消光光谱及表面电场分布.结果发现,该破缺纳米结构的消光光谱中出现了具有Fano共振的线形.分析表明,这个Fano共振线形是由绑定与反绑定混合表面等离激元模式相互作用所致.研究了三角缺口三角形纳米结构的结构参数对Fano共振的影响.
A triangle-shaped triangular broken nanostructure is designed, which is formed by cutting off a triangular slice from the bottom of the equilateral triangle. The extinction spectrum and the surface electric field distribution are studied by the discrete dipole approximation method. It is found that the broken nanometer The extinction spectrum of the structure appears linear with Fano resonance.The analysis shows that this Fano resonance line is caused by the interaction of bound and unbinding mixed surface plasmon modes.The structure parameters of triangle gapd triangular nanostructures Effect on Fano Resonance.