TY - JOUR
T1 - Plasmonic nanoparticles and metasurfaces to realize Fano spectra at ultraviolet wavelengths
AU - Argyropoulos, Christos
AU - Monticone, Francesco
AU - Daguanno, Giuseppe
AU - Alù, Andrea
N1 - Funding Information:
This work has been partially supported by the ARO STTR project “Dynamically Tunable Metamaterials,” AFOSR with the YIP Award No. FA9550-11-1-0009 and the ONR MURI Grant No. N00014-10-1-0942.
PY - 2013/9/30
Y1 - 2013/9/30
N2 - We discuss the possibility to realize sharp Fano scattering signatures in the ultraviolet (UV) range, based on dipolar scattering of nanoparticles. At these frequencies, material losses usually do not allow sharp resonant effects, hindering plasmonic applications based on higher-order multipolar modes, like conventional Fano resonances. We propose to excite degenerate scattering states supported by core-shell nanoparticles made of a sapphire core and an aluminum shell. We predict enhanced, highly confined fields, supporting sharp far-field scattering signatures from single nanoparticles and planar arrays of them. These results may lead to the design of UV filters, photodetectors, sensors, and energy-harvesting devices.
AB - We discuss the possibility to realize sharp Fano scattering signatures in the ultraviolet (UV) range, based on dipolar scattering of nanoparticles. At these frequencies, material losses usually do not allow sharp resonant effects, hindering plasmonic applications based on higher-order multipolar modes, like conventional Fano resonances. We propose to excite degenerate scattering states supported by core-shell nanoparticles made of a sapphire core and an aluminum shell. We predict enhanced, highly confined fields, supporting sharp far-field scattering signatures from single nanoparticles and planar arrays of them. These results may lead to the design of UV filters, photodetectors, sensors, and energy-harvesting devices.
UR - http://www.scopus.com/inward/record.url?scp=84885582537&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84885582537&partnerID=8YFLogxK
U2 - 10.1063/1.4823575
DO - 10.1063/1.4823575
M3 - Article
AN - SCOPUS:84885582537
SN - 0003-6951
VL - 103
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 14
M1 - 143113
ER -