TY - JOUR
T1 - Self-assembled InAs nanowires as optical reflectors
AU - Floris, Francesco
AU - Fornasari, Lucia
AU - Marini, Andrea
AU - Bellani, Vittorio
AU - Banfi, Francesco
AU - Roddaro, Stefano
AU - Ercolani, Daniele
AU - Rocci, Mirko
AU - Beltram, Fabio
AU - Cecchini, Marco
AU - Sorba, Lucia
AU - Rossella, Francesco
PY - 2017
Y1 - 2017
N2 - Subwavelength nanostructured surfaces are realized with self-assembled vertically-aligned InAs nanowires, and their functionalities as optical reflectors are investigated. In our system, polarization-resolved specular reflectance displays strong modulations as a function of incident photon energy and angle. An effective-medium model allows one to rationalize the experimental findings in the long wavelength regime, whereas numerical simulations fully reproduce the experimental outcomes in the entire frequency range. The impact of the refractive index of the medium surrounding the nanostructure assembly on the reflectance was estimated. In view of the present results, sensing schemes compatible with microfluidic technologies and routes to innovative nanowire-based optical elements are discussed.
AB - Subwavelength nanostructured surfaces are realized with self-assembled vertically-aligned InAs nanowires, and their functionalities as optical reflectors are investigated. In our system, polarization-resolved specular reflectance displays strong modulations as a function of incident photon energy and angle. An effective-medium model allows one to rationalize the experimental findings in the long wavelength regime, whereas numerical simulations fully reproduce the experimental outcomes in the entire frequency range. The impact of the refractive index of the medium surrounding the nanostructure assembly on the reflectance was estimated. In view of the present results, sensing schemes compatible with microfluidic technologies and routes to innovative nanowire-based optical elements are discussed.
KW - Chemical Engineering (all)
KW - Materials Science (all)
KW - Nanostructured optical surface
KW - Semiconductor nanowire
KW - Sensing
KW - Specular reflectance
KW - Sub-wavelength nanostructures
KW - Chemical Engineering (all)
KW - Materials Science (all)
KW - Nanostructured optical surface
KW - Semiconductor nanowire
KW - Sensing
KW - Specular reflectance
KW - Sub-wavelength nanostructures
UR - http://hdl.handle.net/10807/110184
UR - http://www.mdpi.com/2079-4991/7/11/400/pdf
U2 - 10.3390/nano7110400
DO - 10.3390/nano7110400
M3 - Article
SN - 2079-4991
VL - 7
SP - N/A-N/A
JO - Nanomaterials
JF - Nanomaterials
ER -