Journal ArticleDOI
Gold Helix Photonic Metamaterial as Broadband Circular Polarizer
Justyna K. Gansel,Michael Thiel,Michael S. Rill,Manuel Decker,Klaus Bade,Volker Saile,Georg von Freymann,Stefan Linden,Martin Wegener +8 more
TLDR
This work investigated propagation of light through a uniaxial photonic metamaterial composed of three-dimensional gold helices arranged on a two-dimensional square lattice that is scalable to other frequency ranges and can be used as a compact broadband circular polarizer.Abstract:
We investigated propagation of light through a uniaxial photonic metamaterial composed of three-dimensional gold helices arranged on a two-dimensional square lattice. These nanostructures are fabricated via an approach based on direct laser writing into a positive-tone photoresist followed by electrochemical deposition of gold. For propagation of light along the helix axis, the structure blocks the circular polarization with the same handedness as the helices, whereas it transmits the other, for a frequency range exceeding one octave. The structure is scalable to other frequency ranges and can be used as a compact broadband circular polarizer.read more
Citations
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Journal ArticleDOI
Flat Optics With Designer Metasurfaces
Nanfang Yu,Federico Capasso +1 more
TL;DR: This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.
Journal ArticleDOI
Directed Self-Assembly of Nanoparticles
TL;DR: The present review critically investigates to what extent self-assembly can be directed, enhanced, or controlled by either changing the energy or entropy landscapes, using templates or applying external fields.
Journal ArticleDOI
DNA-based self-assembly of chiral plasmonic nanostructures with tailored optical response
Anton Kuzyk,Robert D. Schreiber,Zhiyuan Fan,Günther Pardatscher,Eva-Maria Roller,Alexander Högele,Friedrich C. Simmel,Alexander O. Govorov,Tim Liedl +8 more
TL;DR: It is shown that DNA origami enables the high-yield production of plasmonic structures that contain nanoparticles arranged in nanometre-scale helices, and it is found that the structures in solution exhibit defined circular dichroism and optical rotatory dispersion effects at visible wavelengths that originate from the collective plAsmon–plasmon interactions of the nanoparticles positioned with an accuracy better than two nanometres.
Journal ArticleDOI
Past achievements and future challenges in the development of three-dimensional photonic metamaterials
TL;DR: In this paper, the authors describe recent progress in the fabrication of three-dimensional metamaterial structures and discuss some of the remaining challenges, including ultra-high-resolution imaging systems, compact polarization optics and cloaking devices.
Journal ArticleDOI
Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction
Nathaniel K. Grady,Jane E. Heyes,Dibakar Roy Chowdhury,Yong Zeng,Matthew T. Reiten,Abul Kalam Azad,Antoinette J. Taylor,Diego A. R. Dalvit,Hou-Tong Chen +8 more
TL;DR: In this paper, the authors demonstrated ultrathin, broadband, and highly efficient metamaterial-based terahertz polarization converters that are capable of rotating a linear polarization state into its orthogonal one.
References
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TL;DR: This work describes here the first practical realization of a cloak of invisibility, constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies.
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TL;DR: Recent advances in metamaterials research are described and the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena is discussed.