Photonic Effects On Nanostructures In The Ti- TiO2 Interphase
C. P. Barrera-Patiño1*, Heiddy P. Quiroz2, R. R. Rey-González1, A. Dussan2
1Grupo de Óptica e Información Cuántico, Departamento de Física, Universidad Nacional de Colombia – Bogotá,Street address: Cra. 30 No. 45-03 Edificio 404 Of. 206 Ciudad Universitaria, 11001, Colombia
2Grupo de Materiales Nanoestructurados y sus Aplicaciones, Departamento de Física, Universidad Nacional de Colombia – Bogotá. Street address: Cra. 30 No. 45-03 Edificio 404 Lab. 121C Ciudad Universitaria, 11001, Colombia
Adv. Mater. Lett., 2016, 7 (10), pp 802-805
DOI: 10.5185/amlett.2016.6623
Publication Date (Web): Aug 01, 2016
Copyright © 2019 VBRI Press
E-mail:cpbarrerap@unal.edu.co
In this work we present a theoretical-experimental study of optics effects in nanostructures formed during the growth of titania nanotubes. Titania nanotubes were fabricated via electrochemical anodization method using Ethylene glycol. Traces or prints left by the nanotubes on the titanium surface are observed thought X-ray diffraction measurements. The pattern shows a polycrystalline structure with the presence of Anatase and titanium phases. The reflectance and absorbance spectra reveal in the traces optical phenomena similar to iridescence. The iridescence behavior is commonly found in nature and is traditionally associated to photonic properties. Using the plane wave method and modelling the nanostructures observed on the interphase like two-dimensional photonic crystals, the photonic dispersion relation was calculated in function of geometrical parameters. Enlargement of the photonic band gap was found as spatial contrast is increased. These results suggest that these types of nanostructures can be promissory candidates to develop photonic devices.
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