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Plasmonic nanohelix metamaterials with tailorable giant circular dichroism

2013

Article

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Plasmonic nanohelix arrays are shown to interact with electromagnetic fields in ways not typically seen with ordinary matter. Chiral metamaterials (CMMs) with feature sizes small with respect to the wavelength of visible light are a promising route to experimentally achieve such phenomena as negative refraction without the need for simultaneously negative e and mu. Here we not only show that giant circular dichroism in the visible is achievable with hexagonally arranged plasmonic nanohelix arrays, but that we can precisely tune the optical activity via morphology and lattice spacing. The discrete dipole approximation is implemented to support experimental data. (C) 2013 AIP Publishing LLC.

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Author(s): Gibbs, John G. and Mark, Andrew G. and Eslami, Sahand and Fischer, Peer
Journal: APPLIED PHYSICS LETTERS
Volume: 103
Number (issue): 21
Year: 2013

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: 10.1063/1.4829740
Note: Featured cover article.

BibTex

@article{ISI:000327590400061,
  title = {Plasmonic nanohelix metamaterials with tailorable giant circular dichroism},
  author = {Gibbs, John G. and Mark, Andrew G. and Eslami, Sahand and Fischer, Peer},
  journal = {APPLIED PHYSICS LETTERS},
  volume = {103},
  number = {21},
  year = {2013},
  note = {Featured cover article.}
}