Thermal induced tunability of surface plasmon resonance in Au-VO2 nano-photonics

被引：90

作者：

Maaza, M

Nemraoui, O

Sella, C

Beye, AC

Baruch-Barak, B

机构：

[1] ITHEMBA Labs, Nanosci & Nanotechnol Labs, Mat Res Grp, ZA-7129 Faure, South Africa

[2] Rand Afrikaans Univ, Dept Phys, Johannesburg, South Africa

[3] Univ Paris 06, Lab Opt Solides, F-0005 Paris, France

[4] Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA

[5] Haifa Technion, Sch Phys, Haifa, Israel

来源：

OPTICS COMMUNICATIONS | 2005年 / 254卷 / 1-3期

基金：

新加坡国家研究基金会;

关键词：

nano-photonics; plasmon resonance frequency; laser ablation; mott insulator transitions; vanadium dioxide; thermochromism;

D O I：

10.1016/j.optcom.2004.08.056

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new class of nano-photonics for possible Z(3)(omega) applications have been synthesized by pulsed laser ablation and optically characterized. Compared to standard nano-composites exhibiting an exalted effective Z(3)(omega) due to the enhancement of the local electric field, these Au VO2, nano-composites display m additional reversibly tunable surface plasmon frequency under external temperature stimuli. This is due to the semi-conducting/metallie first order transition of the host VO2, matrix. The nano-gold surface plasmon wavelength shifts reversibly from 645 to 598 nm when the Au-VO2 nano-composites temperature varies from 25 to 120 degrees C. Even if the spectral shift is not extensively large. such a tunability is positively genuine. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：188 / 195

页数：8

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