Optical magnetism in metal nanoforests

James Cook; Kosmas Tsakmakidis; Ortwin Hess

doi:10.1117/12.828722

1 September 2009 Optical magnetism in metal nanoforests

James Cook, Kosmas Tsakmakidis, Ortwin Hess

Proceedings Volume 7392, Metamaterials: Fundamentals and Applications II; 73921I (2009) https://doi.org/10.1117/12.828722
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

Abstract

We discuss the optical properties metal nanoforests - a composite metamaterial in which silver nanowires are aligned inside a finite-thickness dielectric host medium. Using finite-element modelling and a self-consistent extraction of effective-medium parameters, we find that this structure can enable an effective optical diamagnetic response that is orders of magnitude stronger compared to that of naturally occurring diamagnetic materials. Our analysis reveals that there is a frequency region where the nanoforest exhibits strong diamagnetic response while simultaneously allowing for high transmission of incident electromagnetic waves. Our analysis shows that the phenomena are robust to the presence of disorder, in the occurrence of which it can still facilitate high figure-of-merit diamagnetic responses.

Citation Download Citation

James Cook, Kosmas Tsakmakidis, and Ortwin Hess "Optical magnetism in metal nanoforests", Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73921I (1 September 2009); https://doi.org/10.1117/12.828722

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