Physics – Condensed Matter – Materials Science
Scientific paper
2010-09-27
Physics
Condensed Matter
Materials Science
9 pages, 8 figures
Scientific paper
We present an investigation of the role of micropatterning on adhesion properties at soft deformable polydimethylsiloxane (PDMS)/ acrylic adhesive interfaces. Contrary to what has been observed for low aspect ratio rigid patterns, where the adhesion enhancement was found to only result from the increase of interfacial area due to patterning, we show that for soft elastic arrays of cylindrical pillars, the elastic deformation of the patterns can lead to noticeable extra adhesion increase. The effect of the geometrical characteristics of the patterning for hexagonal arrays of PDMS micropillars on the adhesion energy are presented. We show that varying the size of the pattern allows one to tune the adhesion energy, and that this adhesion enhancement saturates when the pillars become too close to each other, due a coupling of the elastic deformation fields inside the underlying substrate. A mechanical model has been developed and found in good quantitative agreement with experimental data, with as unique fitting parameter the rupture criteria for the adhesive on the top of the pillars. Such a rupture a rupture criteria can thus be extracted from systematic experiments on controlled patterned surfaces. This criteria remain sensitive to the chemistry of the surfaces.
Leger Liliane
Poulard Christophe
Restagno Frederic
Weil Raphaël
No associations
LandOfFree
Mechanical tunning of adhesion through micro-patterning of elastic surfaces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mechanical tunning of adhesion through micro-patterning of elastic surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical tunning of adhesion through micro-patterning of elastic surfaces will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-517944