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

被引：75
|
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
收藏
页码：100 / 106
页数：7
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