Surface plasmon resonance tunability in Au-VO2 thermochromic nano-composites

被引：78

作者：

Maaza, M

Nemraoul, O

Sella, C

Beye, AC

机构：

[1] IThemba Labs, Nanosci Labs, Mat Res Grp, ZA-7129 Somerset W, 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

来源：

GOLD BULLETIN | 2005年 / 38卷 / 03期

关键词：

D O I：

10.1007/BF03215243

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new type of photo-active nano-composite material appropriate for Ultra-fast Nonlinear Optical chi((3)) (omega) applications has been synthesized and optically characterized. Compared to standard noble metal particles-oxide nano-composites exhibiting a superior effective chi((3)) (omega) due to the enhancement of the local electric field, these Au-VO2 nano-composites display an additional reversibly tunable surface plasmon frequency under external temperature stimuli. Such a smart plasmon tunability is correlated to the Mott's type semiconducting/metallic 1st order transition of the host VO2 matrix. The nano-gold surface plasmon wavelength shifts reversibly from 645 nm to 598 nm when the Au-VO2 nano-composites temperature varies from 25 degrees C to 12 degrees C.

引用

页码：100 / 106

页数：7

共 58 条

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