3D plasmonic crystal metamaterials for ultra-sensitive biosensing.
3D plasmonic crystal metamaterials for ultra-sensitive biosensing.
复制标题
DOI：
10.1038/srep25380
复制
发表时间：
2016-05-06
影响因子：
4.6
通讯作者：
Kabashin AV
中科院分区：
文献类型：
--
作者：
Aristov AI;Manousidaki M;Danilov A;Terzaki K;Fotakis C;Farsari M;Kabashin AV
我们探索了 3D 等离激元晶体超材料中等离激元的激发，并报告了离域等离激元模式的观察，该模式提供了极高的光谱灵敏度（每折射率单位 (RIU) 变化 >2600nm），优于 2D 纳米级几何形状中激发的所有等离激元对应物，以及突出的相敏响应（每 RIU 相位 >3*104 度）。结合 3D 矩阵提供的用于生物固定的大表面，所提出的传感器架构有望成为等离子体生物传感技术发展的新的重要里程碑。
We explore the excitation of plasmons in 3D plasmon crystal metamaterials and report the observation of a delocalized plasmon mode, which provides extremely high spectral sensitivity (>2600 nm per refractive index unit (RIU) change), outperforming all plasmonic counterparts excited in 2D nanoscale geometries, as well as a prominent phase-sensitive response (>3*104 deg. of phase per RIU). Combined with a large surface for bioimmobilization provided by the 3D matrix, the proposed sensor architecture promises a new important landmark in the advancement of plasmonic biosensing technology.