title: Material transfer and polarity reversal in contact charging.
abstract: In touch: the outcome of contact electrification between dielectrics depends not only on the transfer of charge but also on the transfer of material. Although only minute quantities of materials are being exchanged during contact, they can reverse the polarity of dielectrics. The reported results corroborate the mosaic model and suggest that the observations are because of the mechanical softness/hardness of the materials.
authors.affiliation: Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.
authors.forename: H Tarik
authors.initials: HT
authors.lastname: Baytekin
authors.forename: Bilge
authors.initials: B
authors.lastname: Baytekin
authors.forename: Jared T
authors.initials: JT
authors.lastname: Incorvati
authors.forename: Bartosz A
authors.initials: BA
authors.lastname: Grzybowski
mesh_terms: D004553:Electric Conductivity; D004735:Energy Transfer; D018625:Microscopy, Atomic Force; D015394:Molecular Structure; D011137:Polystyrenes / Q000737:chemistry*; D011138:Polytetrafluoroethylene / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D055672:Static Electricity; D013499:Surface Properties
chemical_list: D011137:Polystyrenes; D011138:Polytetrafluoroethylene