Systematic Analysis of the Coupling Effects within Supported Plasmonic Nanorod Antenna Arrays
Systematic Analysis of the Coupling Effects within Supported Plasmonic Nanorod Antenna Arrays
复制标题
支持等离子体纳米棒天线阵列内耦合效应的系统分析
DOI：
10.1021/acs.jpcc.8b04830
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Cottom J
中科院分区：
文献类型：
--
作者：
Cottom J
采用电化学沉积法在多孔阳极氧化铝模板中制备了垂直排列的金纳米棒阵列（纵横比为3.0 ~ 18.0）。然而，在这些支持的阵列中发生的耦合效应是复杂的，涉及粒子-衬底和粒子-粒子耦合，并且远未完全理解。我们已经进行了系统的调查，这些影响，使用有限元建模和相关的实验结果。我们表明，在强耦合制度，阵列的光学性质主要是由棒间间距。此外，通过将阵列支撑在金属膜上，吸收效率显著增强。我们解释这些耦合效应的等离子体杂化理论和图像电荷。我们证明，纵模可以在整个可见光区域进行调谐，并提出谐振波长轮廓图作为杆间间距和纵横比的函数，作为在应用中，如photopolics和photopolics等离子体阵列的设计的辅助。最后，我们表明，无支撑和有支撑的阵列内的耦合可以重新分配电场的中心或基地的纳米棒，分别，而传播沿着棒间轴，这是潜在的光波导应用的兴趣。
Vertically aligned gold nanorod arrays (of aspect ratios from 3.0 to 18.0) supported on metal substrates were fabricated by electrochemical deposition within porous anodic aluminum oxide templates. However, the coupling effects that occur within these supported arrays are complex, involving both particle–substrate and particle–particle coupling, and far from fully understood. We have performed a systematic investigation into these effects using finite element modeling and correlated these results to experiment. We demonstrate that within the strong coupling regime, the optical properties of the arrays are predominantly governed by inter-rod spacing. Additionally, by supporting the arrays on metal films, the absorption efficiency is significantly enhanced. We explain these coupling effects in terms of plasmon hybridization theory and image charges. We demonstrate that the longitudinal mode may be tuned throughout the visible region and present resonant wavelength contour plots as a function of inter-rod spacing and aspect ratio as an aid for the design of plasmonic arrays in applications, such as photovoltaics and photocatalysis. Finally, we show that coupling within unsupported and supported arrays can redistribute the electric field to either the center or base of the nanorods, respectively, while propagating along the inter-rod axis, which is potentially of interest for optical waveguide applications.
登录
查看更多内容
等离激元纳米棒天线阵列：反射和透射分析
影响因子：
3.7
作者：
Vera Fiehler;Fabian Patrovsky;L. Ortmann;Susan Derenko;Andreas Hille;L. Eng
通讯作者：
L. Eng
通过化学浴沉积在裸露和 ITO 涂层玻璃基板上生长垂直排列的 ZnO 纳米棒阵列
DOI：
10.1109/iceee.2016.7751259
发表时间：
2016
期刊：
2016 13th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE)
影响因子：
--
作者：
M. A. Lopez;M. Ortega;Y. Matsumoto
通讯作者：
Y. Matsumoto
影响因子：
7.4
作者：
Krismastuti, Fransiska Sri Herwahyu;Bayat, Haider;Schoenherr, Holger
通讯作者：
Schoenherr, Holger
影响因子：
19
作者：
Evans, Paul R.;Kullock, Rene;Eng, Lukas M.
通讯作者：
Eng, Lukas M.
影响因子：
10.8
作者：
Mock JJ;Hill RT;Degiron A;Zauscher S;Chilkoti A;Smith DR
通讯作者：
Smith DR