Investigating the temperature dependence of the viscosity of a non-Newtonian fluid within lithographically defined microchannels (Articolo in rivista)

Type
Label
  • Investigating the temperature dependence of the viscosity of a non-Newtonian fluid within lithographically defined microchannels (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Girardo, S; Cingolani, R; Pisignano, D (2007)
    Investigating the temperature dependence of the viscosity of a non-Newtonian fluid within lithographically defined microchannels
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Girardo, S; Cingolani, R; Pisignano, D (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 127 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Salento, CNR, INFM, Natl Nanotechnol Lab,NNL, I-73100 Lecce, Italy (literal)
Titolo
  • Investigating the temperature dependence of the viscosity of a non-Newtonian fluid within lithographically defined microchannels (literal)
Abstract
  • We present a study of the rheological phenomenology of a non-Newtonian glass former within hybrid microchannels above the vitrification region. We determined the temperature behavior of the viscosity, which is well fitted by a Vogel-Fulcher-Tamman law for shear rates between 4 x 10(-2) and 9 x 10(-1) s(-1). The microflow viscosity was compared with previously reported conductivity data of the investigated molecular system. Our findings provide an insight into the coupling between the structural dynamics in the bulk and that within the microchannels, suggesting lithographically defined microfluidic systems as promising tools for the investigation of the rheological properties of complex liquids. (C) 2007 American Institute of Physics. (literal)
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