Probing the Ultimate Limits of Plasmonic Enhancement

被引：1017

作者：

Ciraci, C. ^{[1
,2
]}

Hill, R. T. ^{[3
]}

Mock, J. J. ^{[1
,2
]}

Urzhumov, Y. ^{[1
,2
]}

Fernandez-Dominguez, A. I. ^{[4
]}

Maier, S. A. ^{[4
]}

Pendry, J. B. ^{[4
]}

Chilkoti, A. ^{[3
,5
]}

Smith, D. R. ^{[1
,2
]}

机构：

[1] Duke Univ, Ctr Metamat & Integrated Plasmon, Durham, NC 27708 USA

[2] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

[3] Duke Univ, Ctr Biol Inspired Mat & Mat Syst, Durham, NC 27708 USA

[4] Univ London Imperial Coll Sci Technol & Med, Dept Phys, Blackett Lab, London SW7 2AZ, England

[5] Duke Univ, Dept Biomed Engn, Durham, NC 27708 USA

来源：

SCIENCE | 2012年 / 337卷 / 6098期

基金：

英国工程与自然科学研究理事会;

关键词：

FIELD ENHANCEMENT; NANOPARTICLES; QUANTUM;

D O I：

10.1126/science.1224823

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Metals support surface plasmons at optical wavelengths and have the ability to localize light to subwavelength regions. The field enhancements that occur in these regions set the ultimate limitations on a wide range of nonlinear and quantum optical phenomena. We found that the dominant limiting factor is not the resistive loss of the metal, but rather the intrinsic nonlocality of its dielectric response. A semiclassical model of the electronic response of a metal places strict bounds on the ultimate field enhancement. To demonstrate the accuracy of this model, we studied optical scattering from gold nanoparticles spaced a few angstroms from a gold film. The bounds derived from the models and experiments impose limitations on all nanophotonic systems.

引用

页码：1072 / 1074

页数：3