Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Zeno Gaburro"'
Autor:
Francesco Aieta, Zeno Gaburro, Mikhail A. Kats, Patrice Genevet, Nanfang Yu, Federico Capasso
Publikováno v:
Nano Letters. 12:6328-6333
We demonstrate optically thin quarter-wave plates built with metasurfaces that generate high-quality circularly polarized light over a broad wavelength range for arbitrary orientation of the incident linear polarization. The metasurface consists of a
Autor:
Mikhail A. Kats, Zeno Gaburro, Nanfang Yu, Romain Blanchard, Patrice Genevet, Francesco Aieta, Federico Capasso
Publikováno v:
Nano Letters. 12:4932-4936
The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced optical antennas. The lenses and axicons consist of V-sh
Autor:
Romain Blanchard, Zeno Gaburro, Mikhail A. Kats, Guillaume Aoust, Patrice Genevet, Nanfang Yu, Federico Capasso, Francesco Aieta
Publikováno v:
Proceedings of the National Academy of Sciences. 109:12364-12368
The manipulation of light by conventional optical components such as lenses, prisms, and waveplates involves engineering of the wavefront as it propagates through an optically thick medium. A unique class of flat optical components with high function
Autor:
Patrice Genevet, Francesco Aieta, Nanfang Yu, Federico Capasso, Mikhail A. Kats, Zeno Gaburro
Publikováno v:
Nano Letters. 12:1702-1706
Experiments on ultrathin anisotropic arrays of subwavelength optical antennas display out-of-plane refraction. A powerful three-dimensional (3D) extension of the recently demonstrated generalized laws of refraction and reflection shows that the inter
Publikováno v:
204 (2007): 1351–1355.
info:cnr-pdr/source/autori:Ghulinyan, M; Gaburro, Z; Wiersma, DS; Pavesi, L/titolo:Vapor control of resonant Zener tunneling of light in a photonic crystal/doi:/rivista:/anno:2007/pagina_da:1351/pagina_a:1355/intervallo_pagine:1351–1355/volume:204
info:cnr-pdr/source/autori:Ghulinyan, M; Gaburro, Z; Wiersma, DS; Pavesi, L/titolo:Vapor control of resonant Zener tunneling of light in a photonic crystal/doi:/rivista:/anno:2007/pagina_da:1351/pagina_a:1355/intervallo_pagine:1351–1355/volume:204
We show a vapor controlled one-dimensional photonic crystal built with a silicon-based dielectric mesoporous material, in which the refractive index can be continuously tuned by flowing organic vapors through the pores. Exposure of the crystal to vap
Autor:
Diederik S. Wiersma, Costanza Toninelli, Mher Ghulinyan, Pierre Barthelemy, Zeno Gaburro, Lorenzo Pavesi
Publikováno v:
Nature photonics
1 (2007): 172–175.
info:cnr-pdr/source/autori:Barthelemy, P; Ghulinyan, M; Gaburro, Z; Toninelli, C; Pavesi, L; Wiersma, DS/titolo:Optical switching by capillary condensation/doi:/rivista:Nature photonics (Print)/anno:2007/pagina_da:172/pagina_a:175/intervallo_pagine:172–175/volume:1
1 (2007): 172–175.
info:cnr-pdr/source/autori:Barthelemy, P; Ghulinyan, M; Gaburro, Z; Toninelli, C; Pavesi, L; Wiersma, DS/titolo:Optical switching by capillary condensation/doi:/rivista:Nature photonics (Print)/anno:2007/pagina_da:172/pagina_a:175/intervallo_pagine:172–175/volume:1
Photonic materials, which have optical properties that can be modulated by light, are extremely interesting both for their fundamental properties as well as for their potential in the applications of all-optical signal processing and possibly optical
Autor:
Roberta Adamo, Zeno Gaburro, E. Froner, Adelio Rigo, Lorenzo Pavesi, Marina Scarpa, Benno Margesin
Publikováno v:
Journal of Nanoparticle Research. 8:1071-1074
Aqueous solutions of silicon nanocrystals have been obtained, by sonication, from porous Si (p-Si) aged in air for various times. The photoluminescence of these solutions changes with the aging time of p-Si. These changes correlate with nanocrystal c
Autor:
Claudio J. Oton, Zeno Gaburro, Mher Ghulinyan, Lorenzo Pavesi, Daniel Navarro-Urrios, Nestor E. Capuj, E. Lorenzo
Publikováno v:
physica status solidi (c). 2:3227-3231
We report an experimental study of porous silicon-based rugate filters. Possible optimisations that can improve different features of the filters are investigated. We demonstrate sidelobe attenuation by means of half-apodization of the structures wit
Autor:
C. Pérez-Padrón, Lorenzo Pavesi, E. Lorenzo, Nestor E. Capuj, Zeno Gaburro, Daniel Navarro-Urrios, Claudio J. Oton
Publikováno v:
physica status solidi (a). 202:1518-1523
After electrochemical etching, we have made a study of the effects generated on p + -type porous silicon layers when they are left in presence of the electrolyte for different post-etching times. Using an interferometric technique, we have monitored
Autor:
Mher Ghulinyan, Zeno Gaburro, Lorenzo Pavesi, Claudio J. Oton, Nestor E. Capuj, Lucio Pancheri
Publikováno v:
physica status solidi (a). 202:1467-1471
The electrical injection in porous silicon fabricated with heavily doped p-type silicon is very sensitive to NO2. The known effect is an injection increase associated to NO2. We show experimentally a strong correlation between two structural properti