Year: 2000
Type: article
Abstract: Certain fluorinated ion-exchange membranes, when swollen and suitably plated by conducting electrodes, display a spontaneous curvature increasing with the applied electric field E (1) . There is also an inverse effect, where an imposed curvature induces an electric field (in open circuit conditions). We present here a compact description of these effects in the linear regime, and in static conditions: this is based on linear irreversible thermodynamics, with two driving forces ( E and a water pressure gradient ∇ p ) and two fluxes (electric current and water current). We also give some qualitative estimates of the three Onsager coefficients which come into play.
Source: Europhysics Letters (EPL)
Authors: P. G. de Gennes, Ko Okumura, M Shahinpoor, K. J Kim
Institutions: Collège de France, University of New Mexico
Language: English
Subfield: Filtration and Separation
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2059008183