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Coalescence and movement of nanobubbles studied with tapping mode AFM and tip-bubble interaction analysis

hal.structure.identifierNanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics [NLB2]
dc.contributor.authorBHUSHAN, Bharat
hal.structure.identifierNanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics [NLB2]
hal.structure.identifierMechanical Engineering
dc.contributor.authorWANG, Yuliang
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorMAALI, Abdelhamid
dc.date.created2008-07-14
dc.date.issued2008-10-17
dc.identifier.issn0953-8984
dc.description.abstractEnImaging of a polystyrene (PS) coated silicon wafer immersed in deionized (DI) water was conducted using atomic force microscopy (AFM) in the tapping mode (TMAFM). As reported earlier, spherical cap-like domains, referred to as nanobubbles, were observed to be distributed on the PS surface. Experiments reveal that, in addition to the well-known parameter of scan load, scan speed is also an important parameter which affects nanobubble coalescence. The process of nanobubble coalescence was studied. It was found that during coalescence, small nanobubbles were easily moved and merged into bigger ones. Based on the interaction between the AFM cantilever tip and a bubble in the so-called force modulation mode of TMAFM, bubble height and adhesive force information for a given bubble was extracted. A viscoelastic model is used to obtain the interaction stiffness and damping coefficient, which provides a method to obtain the mechanical properties of nanobubbles. The model was further used to study the effect of surface tension force on attractive interaction force and contact angle hysteresis on the changes of the interaction damping coefficient during tip-bubble interaction.
dc.language.isoen
dc.publisherIOP Publishing
dc.title.enCoalescence and movement of nanobubbles studied with tapping mode AFM and tip-bubble interaction analysis
dc.typeArticle de revue
dc.identifier.doi10.1088/0953-8984/20/48/485004
bordeaux.journalJournal of Physics: Condensed Matter
bordeaux.page485004 (1-10)
bordeaux.volume20
bordeaux.issue48
bordeaux.peerReviewedoui
hal.identifierhal-00745996
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00745996v1
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