2 September 2008 Three-dimensional metal dielectric photonic crystal based on self-assembled gold nanoshells
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Abstract
Recently developed metal nanoshells are ideal building blocks for metal-dielectric photonic crystals operating in visible and near-infrared spectrum. We applied silica coating to screen the van der Waals force and also added a dispersant to increase the electrostatic repulsive force. We also stabilized the gold nanoshell sterically by using a surfactant. With the use of tetrasodium pyrophosphate as a dispersant and Tween as a surfactant, we successfully obtained highly stable colloidal solution of gold nanoshells and subsequently self-assembled them into highly ordered opal structures. We observed well-defined diffraction pattern in the fast Fourier Transform spectra and optical spectra that match well the theoretical photonic band structure.
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Jin Hyoung Lee, Jin Hyoung Lee, Wounjhang Park, Wounjhang Park, } "Three-dimensional metal dielectric photonic crystal based on self-assembled gold nanoshells", Proc. SPIE 7039, Nanoengineering: Fabrication, Properties, Optics, and Devices V, 703905 (2 September 2008); doi: 10.1117/12.795041; https://doi.org/10.1117/12.795041
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