Tailoring broadband radiative properties of glass with silver nano-pillars for saving energy

Periodically-isolated and metallic nano-structures are shown to tailor dual radiative properties within a broadband. Embedded silver nano-pillars successfully manipulate reflectance and transmittance through glass (SiO2) from the ultraviolet to near-infrared. The rigorous coupled-wave analysis and g...

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Bibliographic Details
Published in:International journal of thermal sciences 2016-04, Vol.102, p.17-25
Main Authors: Ho, Chi-Chun, Chen, Yu-Bin, Shih, Fu-Yuan
Format: Article
Language:English
Subjects:
Broadband
Dispersions
Electromagnetic fields
Energy conservation
Energy-saving
Glass
Nano-pillars
Nanostructure
Radiative properties
Silver
Spectra
Wavelength-selectivity
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Summary:Periodically-isolated and metallic nano-structures are shown to tailor dual radiative properties within a broadband. Embedded silver nano-pillars successfully manipulate reflectance and transmittance through glass (SiO2) from the ultraviolet to near-infrared. The rigorous coupled-wave analysis and genetic algorithm are integrated into numerical programs to optimize dual property spectra for energy-saving. The performance of two examples is also quantitatively demonstrated based on ISO 9050 at the incidence of transverse electric and transverse magnetic waves. Physical mechanisms responsible for tailored spectra are explained using dispersion curves and electromagnetic field patterns. [Display omitted] •Reflectance and transmittance within a broadband are tailored with metallic nano-pillars.•Glass embedded with a silver nano-pillar array can save illumination and air-conditioning cost.•Tailored spectra are caused by multiple resonances and effective medium behaviors.
ISSN:1290-0729
1778-4166
DOI:10.1016/j.ijthermalsci.2015.10.038