Direct imaging of nanogap-mode plasmon-resonant fields
Direct imaging of nanogap-mode plasmon-resonant fields
复制标题
DOI：
10.1364/oe.19.007726
复制
发表时间：
2011-04-11
期刊：
影响因子：
3.8
通讯作者：
Sasaki, Keiji
中科院分区：
文献类型：
--
作者：
Tanaka, Yoshito;Ishiguro, Hiroyasu;Sasaki, Keiji
我们进行直接局域场成像的等离子体共振金纳米粒子对分离的间隙为几个纳米，使用散射型近场光学显微镜与原子力显微镜尖锐的硅尖。尖锐的尖端允许进入纳米间隙和高空间分辨率。我们的研究结果提供了实验证据，纳米间隙结构产生的光斑的尺寸为一个纳米（< 10 nm）。这不仅在纳米光子学领域具有重要意义，而且为具有纳米间隙结构的等离子体器件的开发提供了重要信息。(C)2011年美国光学学会
We perform direct local-field imaging of a plasmon-resonant gold nanoparticle pair separated by a gap of several nanometers using a scattering-type near-field optical microscope with a sharp silicon tip of atomic force microscope. The sharp tip allows the access for the nanogap and the high spatial resolution. Our results provide experimental evidence that the nanogap structure produces an optical spot with the size of a single nanometer (< 10 nm). This is not only of fundamental importance in the field of nanophotonics, but also provide significant information for the development of plasmonic devices with the nanogap structures. (C) 2011 Optical Society of America