λ3/1000 Plasmonic Nanocavities for Biosensing Fabricated by Soft UV Nanoimprint Lithography

被引：215

作者：

Cattoni, Andrea ^{[1
]}

Ghenuche, Petru ^{[1
,2
]}

Haghiri-Gosnet, Anne-Marie ^{[1
]}

Decanini, Dominique ^{[1
]}

Chen, Jing ^{[1
]}

Pelouard, Jean-Luc ^{[1
]}

Collin, Stephane ^{[1
]}

机构：

[1] CNRS, LPN, F-91460 Marcoussis, France

[2] ONERA French Aerosp Lab, F-91761 Palaiseau, France

来源：

NANO LETTERS | 2011年 / 11卷 / 09期

关键词：

Nanocavities; plasmonics; nanoimprint; perfect absorbers; LSPR resonances; refractive index sensing; RESONANCE SENSORS; OPTICAL SENSORS; SURFACE; NANOPARTICLE; NANOSTRUCTURES; TRANSMISSION; RESONATORS; SYSTEMS; ARRAYS;

D O I：

10.1021/nl201004c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Arrays of plasmonic nanocavities with very low volumes, down to lambda(3)/1000, have been fabricated by soft UV nanoimprint lithography. Nearly perfect omnidirectional absorption (3-70 degrees) is demonstrated for the fundamental mode of the cavity (lambda similar or equal to 1.15 mu m). The second-order mode exhibits a sharper resonance with strong angular dependence and total optical absorption when the critical coupling condition is fulfilled (45-50 degrees, lambda similar or equal to 750 nm). It leads to high refractive index sensitivity (405 nm/RIU) and figure of merit (similar to 21) and offers new perspectives for efficient biosensing experiments in ultralow volumes.

引用

页码：3557 / 3563

页数：7

共 43 条

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