Journal
ADVANCED OPTICAL MATERIALS
Volume 3, Issue 1, Pages 12-32Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201400333
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Funding
- EPSRC through the Cambridge NanoDTC [EP/G037221/1, EP/G060649/1, EP/L027151/1]
- ERC LINASS [320503]
- EPSRC [EP/G060649/1, EP/L027151/1, EP/K028510/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K028510/1, EP/G060649/1, 1208452, EP/L027151/1] Funding Source: researchfish
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The gyroid is a continuous and triply periodic cubic morphology which possesses a constant mean curvature surface across a range of volumetric fill fractions. Found in a variety of natural and synthetic systems which form through self-assembly, from butterfly wing scales to block copolymers, the gyroid also exhibits an inherent chirality not observed in any other similar morphologies. These unique geometrical properties impart to gyroid structured materials a host of interesting optical properties. Depending on the length scale on which the constituent materials are organised, these properties arise from starkly different physical mechanisms (such as a complete photonic bandgap for photonic crystals and a greatly depressed plasma frequency for optical metamaterials). This article reviews the theoretical predictions and experimental observations of the optical properties of two fundamental classes of gyroid structured materials: photonic crystals (wavelength scale) and metamaterials (sub-wavelength scale).
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