Publication Date:
2008-05-20
Description:
Thin elastic membranes supported on a much softer elastic solid or a fluid deviate from their flat geometries upon compression. We demonstrate that periodic wrinkling is only one possible solution for such strained membranes. Folds, which involve highly localized curvature, appear whenever the membrane is compressed beyond a third of its initial wrinkle wavelength. Eventually the surface transforms into a symmetry-broken state with flat regions of membrane coexisting with locally folded points, reminiscent of a crumpled, unsupported membrane. We provide general scaling laws for the wrinkled and folded states and proved the transition with numerical and experimental supported membranes. Our work provides insight into the interfacial stability of such diverse systems as biological membranes such as lung surfactant and nanoparticle thin films.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pocivavsek, Luka -- Dellsy, Robert -- Kern, Andrew -- Johnson, Sebastian -- Lin, Binhua -- Lee, Ka Yee C -- Cerda, Enrique -- New York, N.Y. -- Science. 2008 May 16;320(5878):912-6. doi: 10.1126/science.1154069.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and James Franck Institute (JFI), University of Chicago, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18487188" target="_blank"〉PubMed〈/a〉
Keywords:
Elasticity
;
Gels
;
Lipids/chemistry
;
Mathematics
;
*Membranes/chemistry
;
*Membranes, Artificial
;
Metal Nanoparticles/chemistry
;
*Polyesters/chemistry
;
Pulmonary Surfactants/chemistry
;
Stress, Mechanical
;
Thermodynamics
;
Water
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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