Contact
    Start Publications Geometric Stability and Elastic Response of a Supported ...
    ←  Publication Finder
    KSV NIMA

    Geometric Stability and Elastic Response of a Supported Nanoparticle Film

    Year: 2010

    Journal: Phys. Rev. Lett., 2010, 105, 058301 (4 pp), 20131009

    Authors: Brian D. Leahy, Luka Pocivavsek, Mati Meron, Kin Lok Lam, Desiree Salas, P. James Viccaro, Ka Yee C. Lee, Binhua Lin

    Organizations: Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, USA; James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA; Department of Chemistry and Institute for Biophysical Dynamics, University of Chicago, Chicago, Illinois 60637, USA

    The mechanical response to compression of a self-assembled gold nanoparticle monolayer and trilayer at the air-liquid interface is examined. Analysis of the film’s buckling morphology under compression reveals an anomalously low bending rigidity for both the monolayer and the trilayer, in contrast with continuum elastic plates. We attribute this to the spherical geometry of the nanoparticles and poor coupling between layers, respectively. The elastic energy of the trilayers is first delocalized in wrinkles and then localized into folds, as predicted by linear and nonlinear elastic theory for an inextensible thin film supported on a fluid.