Periodic nanostructures for tunable thin optics

L. Criante; F. Di Fonzo; F. Fumagalli; G. Lanzani; L. Passoni; F. Scotognella; F. Simoni

doi:10.1117/12.2187050

20 August 2015 Periodic nanostructures for tunable thin optics

L. Criante, F. Di Fonzo, F. Fumagalli, G. Lanzani, L. Passoni, F. Scotognella, F. Simoni

Proceedings Volume 9558, Nanostructured Thin Films VIII; 95580O (2015) https://doi.org/10.1117/12.2187050
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

We report the realization and characterization of porous nanostructures where a periodic refractive index modulation is achieved by stacking layers with different nano-architectures. One multilayer photonic crystal has been fabricated starting from colloidal dispersion of silicon dioxide and zirconium dioxide using spin coating technique. Improved efficiency of Bragg reflectivity (up to 85%) has been obtained by a new bottom-up fabrication technique of photonic hierarchical nanostructures based on self-assembly from the gas-phase at low temperature whit a very thin (≈ 1 μm) photonic crystal devices. Due to the high porosity, these systems can be infiltrated with nematic liquid crystals leading to tuning of the Bragg reflection band by applying low voltages to the structure.

Conference Presentation

Citation Download Citation

L. Criante, F. Di Fonzo, F. Fumagalli, G. Lanzani, L. Passoni, F. Scotognella, and F. Simoni "Periodic nanostructures for tunable thin optics", Proc. SPIE 9558, Nanostructured Thin Films VIII, 95580O (20 August 2015); https://doi.org/10.1117/12.2187050

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