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23 April 2008 Periodic structures modified with silver nanoparticles for novel plasmonic application
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Forming structures similar to or smaller than the optical wavelength offers a wide range of possibilities to modify the optical properties of materials. Tunable optical nanostructures can be applied as materials for surface-enhanced spectroscopy, optical filters, plasmonic devices, and sensors. In this work we present experimental results on technology and properties of periodical, polymer based optical structures modified by ordered adsorption of silver nanoparticles. These structures were formed combining UV hardening and dip coating from colloidal solutions. We have investigated the influence of silver nanoparticles assembly on the ambient conditions (deposition temperature and time) and surface features (periodicities and shape) of the template micro structures. Optical absorbance as well as morphology of the structures containing silver nanoparticles were investigated by UV-VIS spectroscopy, AFM, SEM and optical microscopy. The influence of silver nanoparticles on the optical properties of the structures was investigated by polarized light spectroscopy (Grating Light Reflection Spectroscopy - GLRS). From the results of this study we propose a low cost procedure for fabricating structures that could be potentially new type of plasmonic sensors exploiting surface enhanced plasmon resonance in silver nano structures.
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Asta Šileikaitčė, Tomas Tamulevičius, Sigitas Tamulevičius, Mindaugas Andrulevičius, Judita Puišo, Asta Guobienčė, Igoris Prosyčevas, Morten Madsen, Christian Maibohm, and Horst-Günter Rubahn "Periodic structures modified with silver nanoparticles for novel plasmonic application", Proc. SPIE 6988, Nanophotonics II, 69881Q (23 April 2008);

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