A self-oscillating ionic polymer-metal composite bending actuator

Autor:	Alvo Aabloo, Kwang J. Kim, Maarja Kruusmaa, Andres Punning, Heiki Kasemägi, Deivid Pugal
Rok vydání:	2008
Předmět:	Materials science Composite number General Physics and Astronomy chemistry.chemical_element Bending Finite element method Diffusion layer chemistry.chemical_compound chemistry Nafion Electric field Electrode Physics::Chemical Physics Composite material Platinum
Zdroj:	Journal of Applied Physics. 103:084908
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.2903478
Popis:	This paper presents an electromechanical model of an ionic polymer-metal composite (IPMC) material. The modeling technique is a finite element method (FEM). An applied electric field causes the drift of counterions (e.g., Na+), which, in turn, drags water molecules. The mass and charge imbalance inside the polymer is the main cause of the bending motion of the IPMC. The studied physical effects have been considered as time dependent and modeled with FEM. The model takes into account the mechanical properties of the Nafion polymer as well as the thin coating of the platinum electrodes and the platinum diffusion layer. The modeling of the electrochemical reactions, in connection with the self-oscillating behavior of an IPMC, is also considered. Reactions occurring on the surface of the platinum electrode, which is immersed into formaldehyde (HCHO) solution during the testing, are described using partial differential equations and also modeled using FEM. By coupling the equations with the rest of the model, ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::363e253f5f9708591501f38d342b89ee https://doi.org/10.1063/1.2903478 Zobrazit plný text záznamu