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Issue 15, 2016
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Nanoporous hard data: optical encoding of information within nanoporous anodic alumina photonic crystals

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Abstract

Herein, we present a method for storing binary data within the spectral signature of nanoporous anodic alumina photonic crystals. A rationally designed multi-sinusoidal anodisation approach makes it possible to engineer the photonic stop band of nanoporous anodic alumina with precision. As a result, the transmission spectrum of these photonic nanostructures can be engineered to feature well-resolved and selectively positioned characteristic peaks across the UV-visible spectrum. Using this property, we implement an 8-bit binary code and assess the versatility and capability of this system by a series of experiments aiming to encode different information within the nanoporous anodic alumina photonic crystals. The obtained results reveal that the proposed nanosized platform is robust, chemically stable, versatile and has a set of unique properties for data storage, opening new opportunities for developing advanced nanophotonic tools for a wide range of applications, including sensing, photonic tagging, self-reporting drug releasing systems and secure encoding of information.

Graphical abstract: Nanoporous hard data: optical encoding of information within nanoporous anodic alumina photonic crystals

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Supplementary files

Article information


Submitted
05 Feb 2016
Accepted
11 Mar 2016
First published
14 Mar 2016

Nanoscale, 2016,8, 8091-8100
Article type
Paper

Nanoporous hard data: optical encoding of information within nanoporous anodic alumina photonic crystals

A. Santos, C. S. Law, T. Pereira and D. Losic, Nanoscale, 2016, 8, 8091
DOI: 10.1039/C6NR01068G

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