INVESTIGADORES
VACA CHAVEZ FORNASERO Fabian
artículos
Título:
NMR STUDY OF THE LOCAL MOLECULAR DYNAMICS IN THE ISOTROPIC PHASE OF A THERMOTROPIC LIQUID CRYSTAL
Autor/es:
FABIAN VACA CHAVEZ; FERNANDO BONETTO; DANIEL PUSIOL
Revista:
MOLECULAR CRYSTALS AND LIQUID CRYSTALS - (Print)
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Londres; Año: 2001 vol. 366 p. 37 - 42
ISSN:
1542-1406
Resumen:
Nuclear Magnetic Resonance proton spin-lattice measurements in phentylcyano-phenylcyclohexane
liquid crystal at the Larmor frequencies 1.235 MHz and 48 kHz in a temperature
range above the nematic-isotropic phase transition are reported.
The Landau.De Gennes theory for nematic-isotropic phase transition is used to analize the
temperature dependence of the spin-lattice correlation functions. We conclude that the low
frequency approximation can be applied only when the experiment is carried out at Larmor
frequencies in the kHz range.
