Aging of the nonlinear optical susceptibility in doped colloidal suspensions (Articolo in rivista)

Type
Label
  • Aging of the nonlinear optical susceptibility in doped colloidal suspensions (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.75.224203 (literal)
Alternative label
  • Neda Ghofraniha (1); Claudio Conti (2,3); Giancarlo Ruocco (3,4) (2007)
    Aging of the nonlinear optical susceptibility in doped colloidal suspensions
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Neda Ghofraniha (1); Claudio Conti (2,3); Giancarlo Ruocco (3,4) (literal)
Pagina inizio
  • 224203 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://journals.aps.org/prb/abstract/10.1103/PhysRevB.75.224203#authors (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 75 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 22 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) SMC-INFM-CNR, Università di Roma \"La Sapienza,\" P. A. Moro 2, 00185 Roma, Italy (2) Research Center \"Enrico Fermi,\" Via Panisperna 89/A, 00184 Rome, Italy (3) SOFT-INFM-CNR, Università di Roma \"La Sapienza,\" P. A. Moro 2, 00185 Roma, Italy (4) Dipartimento di Fisica, Università di Roma \"La Sapienza,\" P. A. Moro 2, 00185 Roma, Italy (literal)
Titolo
  • Aging of the nonlinear optical susceptibility in doped colloidal suspensions (literal)
Abstract
  • Using Z-scan and dynamic light-scattering measurements, we investigate the nonlinear optical response of a colloidal solution undergoing dynamics slowing down with age. We study the high optical nonlinearity of an organic dye (Rhodamine B) dispersed in a water-clay (Laponite) solution, at different clay concentrations (2.0-2.6 wt %), experiencing the gelation process. We determine the clay platelet self-diffusion coefficient and, by its comparison with the structural relaxation time, we conclude that the gelation process proceeds through the structuring of interconnecting clay platelet network rather than through cluster growth and aggregation. (literal)
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