Nano-hole array structure with improved surface plasmon energy matching characteristics
Nano-hole array structure with improved surface plasmon energy matching characteristics
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DOI：
10.1063/1.3679173
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发表时间：
2012-01-23
影响因子：
4
通讯作者：
Carson, Jeffrey J. L.
中科院分区：
文献类型：
--
作者：
Najiminaini, Mohamadreza;Vasefi, Fartash;Carson, Jeffrey J. L.
我们提出了一种纳米孔阵列结构，在不透明的金膜，其中包含一个空腔下的每个纳米孔。腔有助于金的顶表面和底表面之间以及纳米孔结构内的表面等离子体能量匹配。基于体表面等离子体共振（SPR）传感实验，SP匹配的结构具有2.8倍更高的差分传输，2倍更高的灵敏度，和7倍更高的比率非常光学透射共振附近的最小值相比，传统的NHA。结果表明，与腔的结构具有潜在的提高性能的体SPR传感应用。(C)2012年美国物理学会。[doi 10.1063/1.3679173]
We present a nano-hole array structure in an opaque gold film that contains a cavity beneath each nano-hole. The cavity contributes to surface plasmon energy matching between the top and bottom surfaces of the gold and within the nano-hole structures. Based on bulk surface plasmon resonance (SPR) sensing experiments, the SP-matched structure had 2.8-fold higher differential transmission, 2-fold higher sensitivity, and a 7-fold higher ratio of extraordinary optical transmission at resonance to the nearby minimum compared to a conventional NHA. The results suggest that the structure with cavities has potential to improve performance of bulk SPR sensing applications. (C) 2012 American Institute of Physics. [doi:10.1063/1.3679173]