Orientationally Glassy Crystals of Janus Spheres
arXiv:1406.2625 · doi:10.1103/PhysRevLett.112.218301
Abstract
Colloidal Janus spheres in water (one hemisphere attractive and the other repulsive) assemble into two-dimensional hexagonal crystals with orientational order controlled by anisotropic interactions. We exploit the decoupled translational and rotational order to quantify the orientational dynamics. Via imaging experiments and Monte Carlo simulations we demonstrate that the correlations in the orientation of individual Janus spheres exhibit glasslike dynamics that can be controlled via the ionic strength. Thus, these colloidal building blocks provide a particularly suitable model glass system for elucidating nontrivial dynamics arising from directional interactions, not captured by the consideration of just translational order.
References in corpus (9)
- Colloquium: Artificial spin ice: Designing and imaging magnetic frustration
- Geometric Frustration in Buckled Colloidal Monolayers
- Fractional Stokes-Einstein and Debye-Stokes-Einstein relations in a network forming liquid
- Cooperativity and the freezing of molecular motion at the glass transition
- Glass transitions in two-dimensional suspensions of colloidal ellipsoids
- Dynamics of the rotational degrees of freedom in a supercooled liquid of diatomic molecules
- Orientationally Glassy Crystals of Janus Spheres
- Glassy Dislocation Dynamics in 2-D Colloidal Dimer Crystals
- Restricted Dislocation Motion in Crystals of Colloidal Dimer Particles
Cited by in corpus (10)
- Orientationally Glassy Crystals of Janus Spheres
- Deconstructing the glass transition through critical experiments on colloids
- Jamming Distance Dictates Colloidal Shear Thickening
- Natural selection in the colloid world: Active chiral spirals
- Dynamical facilitation governs glassy dynamics in suspensions of colloidal ellipsoids
- Orientational ordering of closely packed Janus particles
- Roughness Induced Rotational Slowdown Near the Colloidal Glass Transition
- Universal Critical Behavior of Percolation in Orientationally Ordered Janus Particles and Other Anisotropic Systems
- On the selective formation of cubic tetrastack crystals from tetravalent patchy particles
- Bethe-lattice calculations for the phase diagram of a two-state Janus gas