Assembling Ellipsoidal Particles at Fluid Interfaces using Switchable Dipolar Capillary Interactions
arXiv:1408.3140 · doi:10.1002/adma.201402419
Abstract
The fabrication of novel soft materials is an important scientific and technological challenge. We investigate the response of magnetic ellipsoidal particles adsorbed at fluid-fluid interfaces to external magnetic fields. By exploiting previously discovered first-order orientation phase transitions we show how to switch on and off dipolar capillary interactions between particles, leading to the formation of distinctive self-assembled structures and allowing dynamic control of the bottom-up fabrication of reconfigurable novel-structured materials
5 pages, 5 Figures
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- Dynamic capillary assembly of colloids at interfaces with 10,000g accelerations
- Capillary Forces on a Small Particle at a Liquid-Vapor Interface: Theory and Simulation
- Controlled Capillary Assembly of Magnetic Janus Particles at Fluid-Fluid Interfaces
- Elastocapillary driven assembly of particles at free-standing smectic-A films
- Effect of orientational restriction on monolayers of hard ellipsoids
- Curvature dynamics and long-range effects on fluid-fluid interfaces with colloids
- The Raspberry model for protein-like particles: ellipsoids and confinement in cylindrical pores
- Capillary interactions between soft capsules protruding through thin fluid films
- Self-assembly of colloidal bands driven by a periodic external field
- Biaxial nematic phase stability and demixing behaviour in monolayers of rod-plate mixtures
- Mixing properties of bi-disperse ellipsoid assemblies: Mean-field behaviour in a granular matter experiment
- Controllable Capillary Assembly of Magnetic Ellipsoidal Janus Particles into Tunable Rings, Chains and Hexagonal Lattices