摘要
应用时域有限差分算法系统地研究了内嵌银纳米棒圆形银缝隙结构的透射特性.由于倾斜银纳米棒破坏了圆形腔原有的对称稳态磁场分布,该系统中产生了法诺共振现象.此外,透射光谱强烈地依赖于纳米棒的倾斜角度和纳米棒的形貌参数.这些结果有助于设计复合结构滤波器,满足特定的滤波需要.
The transmittance property and steady-state magnetic field distribution of the sliver circular gap embedded with a sliver nanorod are investigated using the finite-difference time-domain method. Since the titled nanorod breaks the symmetric steady-state magnetic field distribution, Fano resonance occurs in the composite system. In addition, the transmittance spectrum depends strongly on the tilting angle and topologic shape of the nanorod. These results would be useful for designing filter for specific usage.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第14期403-407,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:11004160)
国家级大学生创新创业训练计划(批准号:201210635131)资助的课题~~
关键词
表面等离极化激元
法诺共振
时域有限差分算法
surface plasmon polariton Fano resonance finite-difference time-domain method
