Probing Gap Plasmons Down to Subnanometer Scales Using Collapsible Nanofingers
Probing Gap Plasmons Down to Subnanometer Scales Using Collapsible Nanofingers
复制标题
使用可折叠纳米指探测小至亚纳米尺度的间隙等离子体
DOI：
10.1021/acsnano.7b01468
复制
发表时间：
2017-06-01
期刊：
影响因子：
17.1
通讯作者：
Wu, Wei
中科院分区：
文献类型：
--
作者：
Song, Boxiang;Yao, Yuhan;Wu, Wei
Gap plasmonic nanostructures are of great interest due to their ability to concentrate light into small volumes. Theoretical studies, considering quantum mechanical effects, have predicted the optimal spatial gap between adjacent nanoparticles to be in the subnanometer regime in order to achieve the strongest possible field enhancement. Here, we present a technology to fabricate gap plasmonic structures with subnanometer resolution, high reliability, and high throughput using collapsible nanofingers. This approach enables us to systematically investigate the effects of gap size and tunneling barrier height. The experimental results are consistent with previous findings as well as with a straightforward theoretical model that is presented here.
