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All-optical nanometric switch based on the directional scattering of semiconductor nanoparticles

AuthorsGarcía-Cámara, Braulio; Algorri, J. Francisco; Cuadrado, A. ; Urruchi, V.; Sánchez-Pena, J.M.; Serna, Rosalía ; Vergaz, R.
Issue Date31-Jul-2015
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry C 119: 19558- 19564 (2015)
Abstract© 2015 American Chemical Society. A structure based on a dimer of silicon nanoparticles, presenting directional scattering in the visible range, was studied as a new design of an all-optical switch. The combination of spherical nanoparticles satisfying, at the same incident wavelength, the zero-backward and the minimum-forward scattering conditions can produce either a maximum or a minimum of the scattered field in the area between the nanoparticles. The modulation of the incident wavelength can be used as a switching parameter due to the sensitivity of these conditions to it. An optimization of the dimer setup, both in the distance between the nanoparticles and the incident wavelength, was numerically performed to obtain a maximum contrast. Also, near-field and far-field distributions of the electric field have been considered.
Description7 págs.; 7 figs.
Publisher version (URL)http://dx.doi.org/10.1021/acs.jpcc.5b06302
Identifiersdoi: 10.1021/acs.jpcc.5b06302
issn: 1932-7455
Appears in Collections:(CFMAC-IO) Artículos
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