摘要
金属亚波长纳米颗粒之间表面等离子体耦合由于其新颖的理论和传感等方面的应用前景,已成为一个光学领域的研究热点。应用三维时域有限差分法模拟研究了相邻的金属纳米颗粒和金属纳米棒之间共振模式的耦合情况。考虑颗粒与天线的不同结合情况,模拟计算整个结构衰减谱的变化以及电场分布。颗粒和金属棒之间的表面等离子体出现串联和并联耦合模式。当相对位置发生变化时,两者之间的耦合模式发生不同的变化。颗粒之间的耦合模式不同,导致了不同的散射光,在传感等应用方面具有一定的参考价值。
Surface plasmon couplings between the subwavelength metal particles have become a hotspot due to the novel theory and widely application prospects. The coupling between metal nanopartiele and rod is investiga-ted by using the three-dimensional finite difference of time domain method （3-D FDTD ）. By calculating the transmission spectra and electric field distributions, it is found that there exist series and parallel coupling models when nanoparticle and rod is combined, which scatter incident lights at special wavelengths. The investigation has certain applications in the subwavelength sensor.
出处
《贵州大学学报（自然科学版）》
2013年第2期1-7,共7页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金(11104041)
