Ageing of the nonlinear optical susceptibility in soft matter (Articolo in rivista)

Type
Label
  • Ageing of the nonlinear optical susceptibility in soft matter (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-8984/19/20/205129 (literal)
Alternative label
  • N. Ghofraniha (1); C. Conti (2,3); R. Di Leonardo (3,4); B. Ruzicka (3,4); G. Ruocco (3,4) (2007)
    Ageing of the nonlinear optical susceptibility in soft matter
    in Journal of physics. Condensed matter (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • N. Ghofraniha (1); C. Conti (2,3); R. Di Leonardo (3,4); B. Ruzicka (3,4); G. Ruocco (3,4) (literal)
Pagina inizio
  • 205129 (literal)
Pagina fine
  • 205136 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0953-8984/19/20/205129/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 19 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 20 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) SMC-INFM-CNR, c/o Universita' di Roma 'La Sapienza', Piazzale Aldo Moro 2, 00185, Roma, Italy (2) Research Centre 'Enrico Fermi', Via Panisperna 89/A, 00184 Rome, Italy (3) SOFT-INFM-CNR, c/o Universita' di Roma 'La Sapienza', Piazzale Aldo Moro 2, 00185, Roma, Italy (4) Dipartimento di Fisica, Universita' di Roma 'La Sapienza', Piazzale Aldo Moro 2, 00185, Roma, Italy (literal)
Titolo
  • Ageing of the nonlinear optical susceptibility in soft matter (literal)
Abstract
  • We investigate the nonlinear optics response of a colloidal dispersion undergoing dynamics slowing down with age, by using Z-scan and dynamic light scattering measurements. We study the high optical nonlinearity of an organic dye (rhodamine B) dispersed in a water-clay (laponite) suspension. We consider different clay concentrations (2.0-2.6 wt%) experiencing dynamics arrest. We find that (i) the concentration dependent exponential growth of both mean relaxation time and nonlinear absorption coefficient can be individually scaled to a master curve and (ii) the scaling times are the same for the two physical quantities. These findings indicate that the optical nonlinear susceptibility exhibits the same ageing universal scaling behaviour, typical of disordered out of equilibrium systems. (literal)
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