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

被引：87
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.
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页码：188 / 195
页数：8
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