Nano Archive

Surface Plasmon Resonance Tunability in Au-VO2 Thermochromic Nano-composites

M., Maaza and O., Nemraoui and C., Sella and A. C., Beye (2005) Surface Plasmon Resonance Tunability in Au-VO2 Thermochromic Nano-composites. Gold Bulletin, 38 (3). pp. 100-106.

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Abstract

A new type of photo-active nano-composite material appropriate for Ultra-fast Nonlinear Optical (3)() applications has been synthesized and optically characterized. Compared to standard noble metal particles- oxide nano-composites exhibiting a superior effective (3)() 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 598nm when the Au-VO2 nano-composites temperature varies from 25°C to 120°C.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
Physical Science > Quantum phenomena
Material Science > Nanostructured materials
Physical Science > Photonics
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
ID Code:7872
Deposited By:Dr Balla Diop Ngom
Deposited On:28 Nov 2009 20:10
Last Modified:21 Jan 2010 16:33

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