Direction specific adhesion induced by subsurface liquid filled microchannels

dc.bibliographicCitation.firstPage7228eng
dc.bibliographicCitation.issue27eng
dc.bibliographicCitation.lastPage7233eng
dc.bibliographicCitation.volume8
dc.contributor.authorMajumder, Abhijit
dc.contributor.authorMondal, Subrata
dc.contributor.authorTiwari, Anurag Kumar
dc.contributor.authorGhatak, Animangsu
dc.contributor.authorSharma, Ashutosh
dc.date.accessioned2016-03-24T17:36:56Z
dc.date.available2019-06-28T12:39:12Z
dc.date.issued2012
dc.description.abstractWhile directional effects in adhesion and locomotion have in general been generated by creating symmetry breaking topographic features on the surface of a soft bodied object, here we present a novel method for imparting this effect to thin adhesive layers by embedding liquid filled microchannels arranged in pairs with specific intra and inter pair distances. The adhesive exhibits uniform adhesion in classical peel tests when both the channels are filled with either air or a wetting liquid. But the asymmetric effect shows up when only one of the channels in the pair is filled with the liquid. The liquid alters the surface tension of the inner wall of the channel, which results in bulging deformation of the thin skin of the adhesive over the channel. The bulging however remains asymmetric, the extent of asymmetry depending on the intra-pair spacing between the channels. Besides the bulging effect, filling in one channel of a pair with liquid also leads to an asymmetric variation in its modulus. As a result, when an adherent is peeled off the adhesive from two opposite directions, significantly different adhesion strengths result. A similar directional effect also results when channels of two different diameters are used in the pair, thus opening up the possibility of generating several different adhesion strengths simply by altering the geometric features of the embedded microstructure and its filling status. We show also that for both channels in a pair filled with liquid, the adhesion strength increases significantly, by over 60 times of what is achieved for a smooth, featureless, adhesive layer.eng
dc.description.versionpublishedVersioneng
dc.formatapplication/pdf
dc.identifier.urihttps://doi.org/10.34657/1470
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/4212
dc.language.isoengeng
dc.publisherCambridge : Royal Society of Chemistryeng
dc.relation.doihttps://doi.org/10.1039/C2SM25507C
dc.relation.ispartofseriesSoft Matter, Volume 8, Issue 27, Page 7228-7233eng
dc.rights.licenseThis document may be downloaded, read, stored and printed for your own use within the limits of § 53 UrhG but it may not be distributed via the internet or passed on to external parties.eng
dc.rights.licenseDieses Dokument darf im Rahmen von § 53 UrhG zum eigenen Gebrauch kostenfrei heruntergeladen, gelesen, gespeichert und ausgedruckt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.ger
dc.subject.ddc530eng
dc.titleDirection specific adhesion induced by subsurface liquid filled microchannelseng
dc.typearticleeng
dc.typeTexteng
dcterms.bibliographicCitation.journalTitleSoft Mattereng
tib.accessRightsopenAccesseng
wgl.contributorINMeng
wgl.subjectPhysikeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
inm201246.pdf
Size:
407.89 KB
Format:
Adobe Portable Document Format
Description:
Collections