Collective modes of self-assembled supercluster metamaterials: towards label-free sensing

被引：0

作者：

Lauri, Alberto ^{[1
]}

Velleman, Leonora ^{[2
]}

Xiao, Xiaofei ^{[1
]}

Cortes, Emiliano ^{[3
]}

Edel, Joshua B. ^{[2
]}

Giannini, Vincenzo ^{[4
]}

Rakovich, Aliaksandra ^{[5
]}

Maier, Stefan A. ^{[1
,3
]}

机构：

[1] Imperial Coll London, Dept Phys, London SW7 2AZ, England

[2] Imperial Coll London, Dept Chem, London SW7 2AZ, England

[3] Ludwig Maximilians Univ Munchen, Fac Phys, Nanoinst Munich, Munich, Germany

[4] CSIC, Inst Estruct Mat, Madrid, Spain

[5] Kings Coll London, Dept Phys, London WC2R 2LS, England

来源：

FOURTH INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS | 2019年 / 11207卷

基金：

英国工程与自然科学研究理事会; 欧盟地平线“2020”;

关键词：

supercluster; plasmonic nanoparticle; self-assembly; Raman tomography; sensing; collective modes; metamaterial; OPTICAL-PROPERTIES; NANOPARTICLES; ENHANCEMENT; SIZE;

D O I：

10.1117/12.2530098

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Lithographically-produced plasmonic structures, while offering exceptional control of light through light-matter interactions, have seen limited implementation into sensing technologies. This has been due to several factors, such as large ohmic losses and high cost of fabrication. The use of self-assembled superclusters of chemically-synthesized metallic nanoparticles has been proposed as means of overcoming some of these limitations, by exploiting their collective modes. In this work, the existence of such modes is successfully verified by 3D Raman tomography. Proof-of-principle experiments are also conducted to demonstrate the potential of superclusters in sensing schemes.

引用

页数：6

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