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Quasi-total omnidirectional light absorption in nanostructured gold films

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Abstract

A series of experiments and simulations have been performed to evidence the omnidirectional light absorption of planar gold structures containing a two-dimensional lattice of spherical beads or pores. We show that more than 90 % of incident light is absorbed at angles of incidence up to 65° for optimum values of the gold film thickness. We also report the tunability of the absorption wavelength by varying the size of the beads/pores.

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Acknowledgments

The authors thank the Région Aquitaine in the frame of the Erasmus Mundus International doctoral school IDS-FunMat for the Ph.D. scholarship of H. Zheng. I. Ly is gratefully acknowledged for the SEM images.

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Correspondence to Serge Ravaine.

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Zheng, H., Vallée, R., Almeida, R.M. et al. Quasi-total omnidirectional light absorption in nanostructured gold films. Appl. Phys. A 117, 471–475 (2014). https://doi.org/10.1007/s00339-014-8684-9

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  • DOI: https://doi.org/10.1007/s00339-014-8684-9

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