Paper
23 December 2015 Mesoscopic effects in discretised metamaterial spheres
Mikhail Lapine, Christopher G. Poulton, Ross C. McPhedran
Author Affiliations +
Proceedings Volume 9668, Micro+Nano Materials, Devices, and Systems; 96680L (2015) https://doi.org/10.1117/12.2202561
Event: SPIE Micro+Nano Materials, Devices, and Applications, 2015, Sydney, New South Wales, Australia
Abstract
It is well known that effective medium description of metamaterials requires much caution, even for strongly subwavelength systems. Boundary effects play a dramatic role in finite samples with discrete structure, making their observable properties quite different from the predictions of effective medium theory. We report some new findings regarding the distinction between a homogenised response and actual properties of discrete structures, looking into canonical shape of metamaterial objects. Even for large size (up to 20000 “meta-atoms”), we observe a difference between large discretised spheres and a continuous one, which is important for practical design and future development of metamaterials. Finally, we also provide the results for non-resonant discrete finite systems
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Mikhail Lapine, Christopher G. Poulton, and Ross C. McPhedran "Mesoscopic effects in discretised metamaterial spheres", Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 96680L (23 December 2015); https://doi.org/10.1117/12.2202561
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KEYWORDS
Metamaterials

Optical spheres

Magnetism

Metals

Spherical lenses

Copper

Polarizability

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