NDLI: Micromechanics of elastic buckling of a colloidal polymer layer on a soft substrate: experiment and theory

Content Provider	Springer Nature Link
Author	Tordesillas, Antoinette Carey, David Croll, Andrew B. Shi, Jingyu Gurmessa, Bekele
Copyright Year	2013
Abstract	We study the buckling instability of a colloidal particle layer adhered to an elastic substrate using an integrated experimental and theoretical approach. Experiments using monodisperse colloid-scale spherical particles made of polystyrene and silica, show that the wavelength of the initial (critical) buckling mode is independent of particle modulus and linearly dependent on particle radius—in contradiction with the predictions of the prevailing continuum model. We developed a granular model of the particle layer using structural mechanics techniques. The granular model predicts the observed wavelength of the initial, critical buckling mode within the estimated range of parameter values for the experiment. The evolution of this mode into the post-buckling regime is examined. Results highlight the crucial role of material discreteness in the mechanical response, and the need for accurate methods of estimating parameters for the particle-scale resistances against buckling.
Starting Page	249
Ending Page	258
Page Count	10
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	16
Issue Number	2
e-ISSN	14347636
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-12-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Localisation Periodicity Bifurcation Instability Buckling Soft and Granular Matter, Complex Fluids and Microfluidics Engineering Fluid Dynamics Materials Science Geoengineering, Foundations, Hydraulics Industrial Chemistry/Chemical Engineering Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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