Evidence of anomalous refraction of self-assembled curved gold nanowires

Resonant metallic nanostructures, located at the interface between two dielectrics, can produce abrupt phase discontinuities on propagating light that will be anomalously refracted by following the generalized Snell’s law. In this work, we show evidence of anomalous refraction arising when such an interface is nano-patterned with self-assembled bent gold nano-wires having sub-wavelength periodicity.Resonant metallic nanostructures, located at the interface between two dielectrics, can produce abrupt phase discontinuities on propagating light that will be anomalously refracted by following the generalized Snell’s law. In this work, we show evidence of anomalous refraction arising when such an interface is nano-patterned with self-assembled bent gold nano-wires having sub-wavelength periodicity.

[1]  A. Toma,et al.  Self-organized ion-beam synthesis of nanowires with broadband plasmonic functionality , 2010 .

[2]  Mario Bertolotti,et al.  Tailored second harmonic generation from self-organized metal nano-wires arrays. , 2009, Optics express.

[3]  D. Tsai,et al.  Metamaterials: optical activity without chirality. , 2009, Physical review letters.

[4]  A. Persoons,et al.  Light-polarization-induced optical activity , 1999 .

[5]  D. Massabò,et al.  Self-organized metal nanowire arrays with tunable optical anisotropy , 2008 .

[6]  N. Yu,et al.  Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction , 2011, Science.

[7]  M. Jenko,et al.  Erosive versus shadowing instabilities in the self-organized ion patterning of polycrystalline metal films , 2008 .

[8]  J. Pendry.  A Chiral Route to Negative Refraction , 2004, Science.

[9]  A. Persoons,et al.  Optical Activity of Anisotropic Achiral Surfaces. , 1996, Physical review letters.

[10]  F. Mongeot,et al.  Nanostructuring by ion beam , 2003 .

[11]  A. Kildishev,et al.  Broadband Light Bending with Plasmonic Nanoantennas , 2012, Science.

[12]  A Belardini,et al.  Circular dichroism in the optical second-harmonic emission of curved gold metal nanowires. , 2011, Physical review letters.

[13]  Nader Engheta,et al.  Antenna-Guided Light , 2011, Science.

[14]  S. N. Volkov,et al.  Optical activity in diffraction from a planar array of achiral nanoparticles , 2009 .

[15]  A. Keller,et al.  Minimization of topological defects in ion-induced ripple patterns on silicon , 2008 .