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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Di Falco, Andrea
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2021Effective permittivity of co-evaporated metal-organic mixed filmscitations
- 2017Enhanced nonlinear effects in pulse propagation through epsilon-near-zero mediacitations
- 2017Enhanced nonlinear refractive index in ε-near-zero materialscitations
- 2016Enhanced nonlinear refractive index in ε -near-zero materialscitations
- 2016Optically induced metal-to-dielectric transition in Epsilon-Near-Zero metamaterialscitations
- 2016Optothermal nonlinearity of silica aerogelcitations
- 2016Enhanced nonlinear effects in pulse propagation through epsilon-near-zero mediacitations
- 2014Gain assisted nanocomposite multilayers with near zero permittivity modulus at visible frequenciescitations
- 2011Gain assisted nanocomposite multilayers with near zero permittivity modulus at visible frequenciescitations
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article
Effective permittivity of co-evaporated metal-organic mixed films
Abstract
The combination of organics and metals in a composite film holds promise for combining plasmonic interaction with gain and for the realization of epsilon-near-zero (ENZ) metamaterials. In particular, fluorescent organic dyes can be used to compensate the plasmonic losses of a homogenized metal-organic material. Here, we fabricate such films through thermal co-evaporation of silver and an organic host:guest system and investigate experimentally the resulting linear optical properties for varying metal concentrations. We extract the effective permittivity of the resulting films with ellipsometry measurements and demonstrate the formation of silver nanoparticles and resulting strong localised surface plasmon resonances, up until a percolation threshold. Through enhanced light-matter interaction, we observe a maximum of the photoluminescence for a concentration of 15% involume of metal in the composite material. These results showcase a variety of growth parameters and will be useful for the future design of gain-compensated plasmonics and ENZ metamaterials.