Pattern formation in colloidal explosions
arXiv:1009.1930 · doi:10.1209/0295-5075/94/48008
Abstract
We study the non-equilibrium pattern formation that emerges when magnetically repelling colloids, trapped by optical tweezers, are abruptly released, forming colloidal explosions. For multiple colloids in a single trap we observe a pattern of expanding concentric rings. For colloids individually trapped in a line, we observe explosions with a zigzag pattern that persists even when magnetic interactions are much weaker than those that break the linear symmetry in equilibrium. Theory and computer simulations quantitatively describe these phenomena both in and out of equilibrium. An analysis of the mode spectrum allows us to accurately quantify the non-harmonic nature of the optical traps. Colloidal explosions provide a new way to generate well-characterized non-equilibrium behaviour in colloidal systems.
New restructured version (supplementary material goes into main text, no change of content), added journal reference and DOI information; 6 pages, 6 figures, published in Europhysics Letters (EPL)
References in corpus (9)
- Wigner Crystal in One Dimension
- Phonons in a one-dimensional microfluidic crystal
- Generic properties of a quasi-one dimensional classical Wigner crystal
- Harmonic lattice behavior of two-dimensional colloidal crystals
- Frenkel-Kontorova model with cold trapped ions
- Transition from a one-dimensional to a quasi-one-dimensional state in interacting quantum wires
- Anomalous Microfluidic Phonons Induced by the Interplay of Hydrodynamic Screening and Incompressibility
- Three-body interactions in colloidal systems
- The interplay between hydrodynamic and Brownian fluctuations in sedimenting colloidal suspensions
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- Experimental demonstration of an efficient number diagnostic for long 1D ion chains
- Static kinks in chains of interacting atoms