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    Elastic Properties of Langmuir-Blodgett Films. A New Brillouin Spectroscopic Strategy

    Year: 1998

    Journal: Langmuir 1998, 14, 6625-6627, 20111221

    Authors: Rafael J. Jimnez Riobo, Jorge Souto, Jose A. de Saja, and Carlos Prieto

    Organizations: Instituto de Ciencia de Materiales de Madrid (CSIC), Cantoblanco, E-28049 Madrid, Spain, and Departamento de Fisica de la Materia Condensada, Cristalografia y Mineralogia, Universidad de Valladolid, E-47005 Valladolid, Spain

    A new Brillouin spectroscopic strategy has permitted us, for the first time, to obtain direct information about the values of the longitudinal elastic constant in the growth plane and in the growth direction (c11 and c33, respectively) of a Langmuir-Blodgett film of copper arachidate. The obtained results show the elastic isotropy of the film in the growth plane and the clear difference from the value obtained in directions almost parallel to the growth direction (c11 ) 9.4 = 0.1 GPa and c33 > 10.59 GPa). This nondestructive and contactless method opens new perspectives in the determination of the elastic properties of thin film samples.