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Influence of substrate on the optical properties of non-aggregated silver nanoparticles

Published online by Cambridge University Press:  15 November 2013

Serhiy Z. Malynych*
Affiliation:
V.E. Lashkarev Institute of Semiconductor Physics NAS of Ukraine, 41 Nauky Ave., Kyiv 03028, Ukraine
Nicolas L. Dmitruk
Affiliation:
V.E. Lashkarev Institute of Semiconductor Physics NAS of Ukraine, 41 Nauky Ave., Kyiv 03028, Ukraine
Iryna E. Moroz
Affiliation:
National University “Lviv Polytechnic”, 12 S. Bandery St., Lviv 79013, Ukraine
*
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Abstract

In this paper, experimental results on the influence of the substrates of different refractive index on the optical properties of two-dimensional silver nanoparticle array are presented. It is shown that plasmon mode that arises from cooperative interactions between closely spaced nanoparticles exhibit different dependences on the incident angle of light. Those dependencies can be qualitatively explained by the concept of mirror images induced in a substrate. Semiconductor (ITO) substrate possesses higher refractive index which even more affects the optical response of silver nanoparticle array.

Type
Research Article
Copyright
© EDP Sciences, 2013

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