title: Anomalous long-range repulsion between silica surfaces induced by density inhomogeneities in supercritical ethanol.
abstract: Anomalous long-range repulsion, extending over several micrometres, emerged between silica surfaces around the ridge of density fluctuations in supercritical ethanol at temperatures and pressures near the gas/liquid critical point (T(c) = 241 °C, P(c) = 6.14 MPa). Analysis shows that augmentation of ethanol density around silica surfaces in the presence of density fluctuations facilitates dissociation of silanol groups, leading to long-range electrostatic repulsion in the nonpolar medium.
authors.affiliation: Research and Development Center for Marine Biosciences, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan. shigeru.deguchi@jamstec.go.jp.
authors.forename: Sada-atsu
authors.initials: SA
authors.lastname: Mukai
authors.forename: Takehito
authors.initials: T
authors.lastname: Koyama
authors.forename: Kaoru
authors.initials: K
authors.lastname: Tsujii
authors.forename: Shigeru
authors.initials: S
authors.lastname: Deguchi