title: Observation of the surface stress induced in microcantilevers by electrochemical redox processes.
abstract: The potential-induced surface stress of a solid electrode was investigated in an electrochemical cell. Gold-coated atomic force microscopy microcantilevers were used as working electrodes to measure the current-potential response (by cyclic voltammetry) and simultaneous bending characteristics in solutions of NaNO3 and K3Fe(CN)6/NaNO3. The observed changes of differential surface stress at a microcantilever electrode were attributed to electrochemical-potential-induced changes in surface charge density, ion adsorption/desorption, and electron transfer across the electrode surface. The potential dependent change in stress shows promise for the study of microscopic properties at the solid-electrolyte interface.
authors.affiliation: Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6123, USA.
authors.forename: F
authors.initials: F
authors.lastname: Tian
authors.forename: J H
authors.initials: JH
authors.lastname: Pei
authors.forename: D L
authors.initials: DL
authors.lastname: Hedden
authors.forename: G M
authors.initials: GM
authors.lastname: Brown
authors.forename: T
authors.initials: T
authors.lastname: Thundat