title: Mixed self-assembled monolayers of alkanethiolates on ultrasmooth gold do not exhibit contact-angle hysteresis.
abstract: We present the first study of mixed alkanethiolate SAMs on ultrasmooth gold surfaces. By eliminating surface roughness, it became possible, for the first time, to investigate wetting properties as a function of surface chemical composition. In three different surface compositions, it was found that contact-angle hysteresis apparently vanished. This suggests that surface chemical heterogeneity does not contribute to contact-angle hysteresis in mixed SAMs on ultrasmooth gold surfaces.
authors.affiliation: Department of Chemical and Biological Sciences and Engineering, Polytechnic niversity, 6 Metrotech Center Brooklyn, New York 11201, USA.
authors.forename: Pooja
authors.initials: P
authors.lastname: Gupta
authors.forename: Abraham
authors.initials: A
authors.lastname: Ulman
authors.forename: Stephanie
authors.initials: S
authors.lastname: Fanfan
authors.forename: Alexander
authors.initials: A
authors.lastname: Korniakov
authors.forename: Katja
authors.initials: K
authors.lastname: Loos