Sergei Yushanov, Jeffrey S. Crompton, Luke T. Gritter, and Kyle C. Koppenhoefer
AltaSim Technologies
Columbus, OH
USA
表面等离子体共振(SPR)由表面等离子体产生,因为任何两个材料之间存在相干电子振荡,而介电函数的实部会改变整个表面上的信号。SPR 技术是基于入射光透入一个表面上的电磁场分量,也可用于检测表面上的分子吸附。等离子体激发通常存在两种配置:Kretschmann-Raether 配置(其中一个薄金属膜置于电介质和空气之间,而且入射波来自电介质一侧)和 Otto 配置(其中电介质和金属之间存在气隙)。使用 COMSOL Multiphysics 软件,可以对电磁场上的 SPR 效果进行定义,这样有利于表面污染物和纳米光子器件的测量。
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