Investigation of multiple metal nanoparticles near-field coupling on the surface by discrete dipole approxima-tion method

• 作者: YIN Ping LIN Qiang RUAN Yi CHEN Jing-jing
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: Micro-Nanostructures
• 页码范围: 257-261
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11801-021-0064-z

摘要

We use the method of discrete dipole approximation with surface interaction to construct a model in which a plurality of nanoparticles is arranged on the surface of BK7 glass.Nanoparticles are in air medium illuminated by evanescent wave generated from total internal reflection.The effects of the wavelength,the polarization of the incident wave,the number of nanoparticles and the spacing of multiple nanoparticles on the field enhancement and extinction efficiency are calcu-lated by our model.Our work could pave the way to improve the field enhancement of multiple nanoparticles systems.