31 July 2007 Total light absorption in ultrathin size-gradient metal-dielectric nanostructures
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Proceedings Volume 6728, ICONO 2007: Novel Photonics Materials; Optics and Optical Diagnostics of Nanostructures; 672838 (2007) https://doi.org/10.1117/12.752455
Event: The International Conference on Coherent and Nonlinear Optics, 2007, Minsk, Belarus
Abstract
We propose ultrathin plasmonic nanocoatings that can absorb more than 90% of visible light in a broad (exceeding 100 nm) wavelength range, reaching almost total absorption at the surface plasmon resonance (SPR) wavelength. Such a coating contains only two monolayers of metal nanoparticles (with smaller nanoparticles in the first monolayer and larger nanoparticles in the second monolayer) separated by a dielectric film with quarter-wave thickness. We analytically derive spectral characteristics of two-monolayer systems and explore the regimes, which must be satisfied for realization of high-absorptive coatings at the SPR range.
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S. M. Kachan, S. M. Kachan, A. N. Ponyavina, A. N. Ponyavina, "Total light absorption in ultrathin size-gradient metal-dielectric nanostructures", Proc. SPIE 6728, ICONO 2007: Novel Photonics Materials; Optics and Optical Diagnostics of Nanostructures, 672838 (31 July 2007); doi: 10.1117/12.752455; https://doi.org/10.1117/12.752455
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