Anodized aluminum oxide membranes of tunable porosity with platinum nanoscale-coating for photonic application
作者： Yuhai Zhang , Sang Jun Son , Heongkyu Ju
DOI: 10.1016/J.CAP.2012.04.036
关键词: Optics 、 Materials science 、 Coating 、 Anodizing 、 Photonics 、 Membrane 、 Porosity 、 Diffraction grating 、 Optoelectronics 、 Oxide 、 Fabry–Pérot interferometer
摘要: Abstract We fabricate anodized aluminum oxide (AAO) membranes with platinum (Pt) coating of various thickness ranging from 0 nm to 12 nm. also demonstrate the tunability membrane porosity, add a degree freedom in addition Pt coating, for optical modulation that can be used photonic application. The reflectance measurement and its analysis are provided based on Fabry–Perot etalon optics takes into account spectral dependence absorption loss AAO membrane. It is revealed frequency-dependent finesse (color purity) enhances nonlinearly thickness, by quantitative estimation, while effective refractive index substantially governed porosity. These features allow as dye-free color displaying film efficient both purity. In particular, strong an porosity demonstrated such have down about 1.2, making it possible candidate single layer anti-reflection material deposited components including low-index glass. fabricate, facile dipping method, whose pore size changes gradually along direction surface. This intra-membrane allows find application grating or band-pass filter transmission wavelength varies position device
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