Electrical-field–induced curvature increase on a drop of conducting liquid

Autor:	M. Bienia, Catherine Quilliet, M. Vallade, Friedrich Gunther Mugele
Přispěvatelé:	Physics of Complex Fluids, Faculty of Science and Technology
Rok vydání:	2006
Předmět:	Physics Surface (mathematics) METIS-232832 IR-61317 Field (physics) General Physics and Astronomy Conformal map Mechanics Curvature Contact angle Classical mechanics Electric field Electrowetting Voltage
Zdroj:	Europhysics letters, 74(1). IOP Publishing Ltd.
ISSN:	1286-4854 0295-5075
DOI:	10.1209/epl/i2006-10003-3
Popis:	We present an analytical approach using conformal mapping to the free-boundary problem of the shape of a liquid drop submitted to a strong electrical field, as encountered in electrowetting systems. In agreement with recent numerical calculations, we show that both the curvature of the surface profile and the electric field diverge algebraically close to the three-phase line. The algebraic exponents agree with the numerical results. We show analytically that the local contact angle remains equal to Young's angle, independent of the applied voltage. Furthermore, we present experimental evidence of a curvature increase close to the contact line.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b6461bf4e93bf9ef2039d44cb1e5ebc https://doi.org/10.1209/epl/i2006-10003-3 Zobrazit plný text záznamu