Ekinci Y, Christ A, Agio M, Martin O J F, Solak H H, Löffler J F
Department of Materials, Laboratory of Metal Physics and Technology, ETH Zurich, 8093 Zurich, Switzerland.
Opt Express. 2008 Aug 18;16(17):13287-95. doi: 10.1364/oe.16.013287.
We present an experimental and theoretical study on the optical properties of arrays of gold nanoparticle in-tandem pairs (nanosandwiches). The well-ordered Au pairs with diameters down to 35 nm and separation distances down to 10 nm were fabricated using extreme ultraviolet (EUV) interference lithography. The strong near-field coupling of the nanoparticles leads to electric and magnetic resonances, which can be well reproduced by Finite-Difference Time-Domain (FDTD) calculations. The influence of the structural parameters, such as nanoparticle diameter and separation distance, on the hybridized modes is investigated. The energy and lifetimes of these modes are studied, providing valuable physical insight for the design of novel plasmonic structures and metamaterials.
我们展示了一项关于串联金纳米粒子对（纳米三明治）阵列光学性质的实验和理论研究。使用极紫外（EUV）干涉光刻技术制备了直径低至35nm且间距低至10nm的有序金对。纳米粒子的强近场耦合导致了电共振和磁共振，这可以通过时域有限差分（FDTD）计算得到很好的再现。研究了诸如纳米粒子直径和间距等结构参数对杂化模式的影响。对这些模式的能量和寿命进行了研究，为新型等离子体结构和超材料的设计提供了有价值的物理见解。
