Interaction properties between different modes of localized and propagating surface plasmons in a dimer nanoparticle array
Interaction properties between different modes of localized and propagating surface plasmons in a dimer nanoparticle array
复制标题
二聚体纳米颗粒阵列中不同模式的局域和传播表面等离子体激元之间的相互作用特性
DOI：
10.1117/1.oe.57.8.087108
复制
发表时间：
2018-08
影响因子：
1.3
通讯作者：
Cai Weiping
中科院分区：
文献类型：
--
作者：
Ma Qilin;Liu Guangqiang;Feng Sujuan;Chen Yiqing;Cai Weiping
抽象。当单个纳米颗粒阵列结构中传播的表面等离子体激元（SPP）和局域表面等离子体激元共振（LSPR）的峰位变得非常接近时，通常会发生表面等离子体激元共振（SPR）峰位的反交叉行为，这可以显著增强近场强度。我们首次报道了二聚体纳米盘-SiO2间隔层-金膜混合三明治结构中两种类型的SPR的相互作用。在这种结构中，由于LSPR的不同模式，反交叉行为并不总是出现。此外，还出现了交叉行为的基础上的相互作用的表面活性剂和LSPR的纵向键合模式。当发生反交叉行为时，也出现仅随阵列周期变化的带隙。该带隙不仅在反交叉行为中而且在交叉行为中影响电场强度增强。结合SPPs和LSPRs模的混合特性，讨论了反交叉行为和交叉行为下的电场强度分布特性。此外，我们报告的发生机制，这些不同的行为。
Abstract. When the peak positions of propagating surface plasmon polaritons (SPPs) and localized surface plasmon resonances (LSPRs) become very close to each other in a single nanoparticle array structure, an anticrossing behavior of the surface plasmon resonances (SPRs) peak positions usually occurs, which can considerably enhance the near-field intensity. We first report on the interaction of two types of SPRs in a dimer nanodisk–SiO2 spacer–gold film hybrid sandwich structure. The anticrossing behavior does not appear always due to various modes of LSPRs in such structures. Moreover, a crossing behavior also appears based on the interaction of SPPs and a longitudinal bonding mode of LSPRs. When the anticrossing behavior occurs, a bandgap that changes only with the array period also appears. This bandgap influences the electric field intensity enhancement not only in the anticrossing behavior but also in the crossing behavior. The electric field intensity distribution properties both in the anticrossing behavior and crossing behavior are discussed with reference to the hybrid properties of the SPPs and LSPRs modes. Furthermore, we report on the occurrence mechanisms of these different behaviors.
登录
查看更多内容
影响因子：
10.8
作者：
Haberfehlner G;Trügler A;Schmidt FP;Hörl A;Hofer F;Hohenester U;Kothleitner G
通讯作者：
Kothleitner G
影响因子：
3.7
作者：
JOHNSON, PB;CHRISTY, RW
通讯作者：
CHRISTY, RW
影响因子：
8.6
作者：
Xu, HX;Bjerneld, EJ;Börjesson, L
通讯作者：
Börjesson, L
影响因子：
--
作者：
OTTO, A
通讯作者：
OTTO, A
影响因子：
3.6
作者：
Chu, Yizhuo;Crozier, Kenneth B.
通讯作者：
Crozier, Kenneth B.