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. 2019 Mar 2;9(3):334. doi: 10.3390/nano9030334

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Tuning effects of different parameters on the reflection spectra for the hexagonal nanodisk array at normal incidence. The influence of (a) Au disk thickness (h₁); (b) Au disk radius r; (c) SiO₂ interlayer thickness (H) and (f) period (P) at both plasmon resonances for the calculated reflection spectra; (d) comparison of the reflection spectra for different parameters (h₁) and (H). The responses of the resonant wavelength at the first plasmon resonance for (e) different SiO₂ interlayer thickness (H) and SiO₂ interlayer RI and (g) period (P).