Metamaterials

Optical guided mode resonance filter on a flexible substrate

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In Optical guided mode resonance filter on a flexible substrate, published in Optics Express, we present the design, fabrication and characterization of a new filtering platform, based on the principle of Guided Mode Resonance. The filters consist of plasmonic nanofeatures realised on flexible polymer substrates, and work down to the visible range. In this paper we also exhibit an example proof-of-concept application by mounting the sample directly onto the end of a collimated fibre output, as shown in the figure.  This progresses research on lab-on-fibre technologies, introducing an alternative to directly fabricating structures on the end of a fibre, and rather produce fibre terminating caps which can be… Read More »Optical guided mode resonance filter on a flexible substrate

Flexible Metamaterials

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Metamaterials (MMs) are man made materials with unusual electromagnetic properties that are not typically found in Nature. They are the key to achieving such extraordinary properties as invisibility cloaks and perfect lenses. At present, they are bulky and confined to laboratories. If they were flexible, they could become much more versatile and practical. We are working towards a novel concept for flexible MMs (Metaflex) that will turn current cloaking devices from suits of armour into true cloaks.   In the following figure a single layer of Metaflex is placed on a commercial disposable contact lens, to show the potential of the approach. Our interest in Metaflex… Read More »Flexible Metamaterials