title: Assembling ellipsoidal particles at fluid interfaces using switchable dipolar capillary interactions.
abstract: How to dynamically tune an assembly of anisotropic colloidal particles adsorbed at fluid-fluid interfaces using dipolar capillary interactions is demonstrated. A previously discovered first-order phase transition is exploited and it is shown how to spontaneously turn off these dipolar capillary interactions by exceeding a critical field strength, providing unprecedented control of the bottom-up fabrication of soft materials.
authors.affiliation: Centre for Computational Science, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom.
authors.forename: Gary B
authors.initials: GB
authors.lastname: Davies
authors.forename: Timm
authors.initials: T
authors.lastname: Krüger
authors.forename: Peter V
authors.initials: PV
authors.lastname: Coveney
authors.forename: Jens
authors.initials: J
authors.lastname: Harting
authors.forename: Fernando
authors.initials: F
authors.lastname: Bresme
mesh_terms: D057446:Hydrodynamics; D060328:Magnetic Phenomena; D055595:Mechanical Phenomena; D013499:Surface Properties
keywords: capillary interactions; colloidal particles; emulsions; fluid-fluid interfaces; self assembly