liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Geometry- and rate-dependent adhesive failure of micropatterned surfaces
Wageningen University.
Linköping University, Department of Management and Engineering, Mechanics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-1503-8293
Wageningen University.
2012 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, Vol. 24, no 6, 065103- p.Article in journal (Refereed) Published
Abstract [en]

The dynamic nature of adhesive interface failure remains poorly understood, especially when the contact between the two surfaces is localized in microscopic points of adhesion. Here, we explore the dynamic failure of adhesive interfaces composed of a large number of micron-sized pillars against glass. Surprisingly, we find a large influence of the microcontact geometry; ordered arrays of these pillars exhibit significantly stronger adhesive properties than equivalent surfaces in which the pillars are disordered. This can be understood with a simple geometric argument that accounts for the number of adhesive bonds that needs to be broken simultaneously to propagate the crack front. Moreover, the adhesive strength in both cases depends largely on the velocity with which the surfaces are separated. This rate dependence is explained on the basis of a semi-phenomenological model that describes macroscopic failure as a consequence of microscopic bond-rupture events. Our results suggest that the dynamics of adhesive failure, in the limit explored here, is predominantly stress-driven and highly sensitive to local geometry effects.

Place, publisher, year, edition, pages
2012. Vol. 24, no 6, 065103- p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-73670DOI: 10.1088/0953-8984/24/6/065103OAI: diva2:475745
Available from: 2012-01-11 Created: 2012-01-11 Last updated: 2016-05-04

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Lindström, Stefan
By organisation
MechanicsThe Institute of Technology
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 228 hits
ReferencesLink to record
Permanent link

Direct link