Active structuring of colloidal armour on liquid drops
Dommersnes, Paul; Rozynek, Zbigniew; Mikkelsen, Alexander; Castberg, Rene; Kjerstad, Knut; Hersvik, Kjetil; Fossum, Jon Otto
Journal article, Peer reviewed
Permanent lenke
http://hdl.handle.net/11250/2357900Utgivelsesdato
2013Metadata
Vis full innførselSamlinger
- Institutt for fysikk [2698]
- Publikasjoner fra CRIStin - NTNU [38278]
Sammendrag
Adsorption and assembly of colloidal particles at the surface of liquid droplets are at the base
of particle-stabilized emulsions and templating. Here we report that electrohydrodynamic and
electro-rheological effects in leaky-dielectric liquid drops can be used to structure and
dynamically control colloidal particle assemblies at drop surfaces, including electric-fieldassisted
convective assembly of jammed colloidal ‘ribbons’, electro-rheological colloidal
chains confined to a two-dimensional surface and spinning colloidal domains on that surface.
In addition, we demonstrate the size control of ‘pupil’-like openings in colloidal shells. We
anticipate that electric field manipulation of colloids in leaky dielectrics can lead to new routes
of colloidosome assembly and design for ‘smart armoured’ droplets.