期刊
OPTICS EXPRESS
卷 16, 期 17, 页码 13287-13295出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.16.013287
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资金
- ETH Zurich Initiative on Composite Doped Metamaterials (CDM)
- ETH [TH-29/07-3]
- European Commission [IST FP6-202-IST-1-507879]
- Swiss National Science Foundation [206021]
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. (C) 2008 Optical Society of America.
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