Time-Dependent Nonlinear Optical Susceptibility of an Out-of-Equilibrium Soft Material (Articolo in rivista)

Type
Label
  • Time-Dependent Nonlinear Optical Susceptibility of an Out-of-Equilibrium Soft Material (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.102.038303 (literal)
Alternative label
  • Neda Ghofraniha (1); Claudio Conti (2); Giancarlo Ruocco (1,2); Francesco Zamponi (3) (2009)
    Time-Dependent Nonlinear Optical Susceptibility of an Out-of-Equilibrium Soft Material
    in Physical review letters (Print); American Physical Society (APS), College Pk (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Neda Ghofraniha (1); Claudio Conti (2); Giancarlo Ruocco (1,2); Francesco Zamponi (3) (literal)
Pagina inizio
  • 038303 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prl.aps.org/abstract/PRL/v102/i3/e038303 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 102 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Dipartimento di Fisica, Università di Roma \"La Sapienza\", P. A. Moro 2, 00185, Roma, Italy 2 SOFT-INFM-CNR, c/o Università di Roma \"La Sapienza\", P. A. Moro 2, 00185, Roma, Italy 3 Laboratoire de Physique Théorique, École Normale Supérieure, 24 Rue Lhomond, 75231 Paris Cedex 05, France (literal)
Titolo
  • Time-Dependent Nonlinear Optical Susceptibility of an Out-of-Equilibrium Soft Material (literal)
Abstract
  • We investigate the time-dependent nonlinear optical absorption of a clay dispersion (Laponite) in an organic dye (rhodamine B) water solution displaying liquid-arrested state transition. Specifically, we determine the characteristic time tau(D) of the nonlinear susceptibility buildup due to the Soret effect. By comparing tau(D) with the relaxation time provided by standard dynamic light scattering measurements we report on the decoupling of the two collective diffusion times at the two very different length scales during the aging of the out-of-equilibrium system. With this demonstration experiment we also show the potentiality of nonlinear optics measurements in the study of the late stage of arrest in soft materials. (literal)
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