Pattern formation in colloidal explosions

Straube, Arthur V.; Louis, Ard A.; Baumgartl, Jörg; Bechinger, Clemens; Dullens, Roel P. A.

Pattern formation in colloidal explosions

Files

Straube_0-412634.pdf(852.76 KB)

Date

2011

Authors

Straube, Arthur V.

Louis, Ard A.

Baumgartl, Jörg

Bechinger, Clemens

Dullens, Roel P. A.

Publication type

Journal article

Publication status

Published

Published in

EPL : Europhysics Letters ; 94 (2011), 4. - 48008. - ISSN 0295-5075. - eISSN 1286-4854

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.

Subject (DDC)

530 Physics

Cite This

ISO 690

STRAUBE, Arthur V., Ard A. LOUIS, Jörg BAUMGARTL, Clemens BECHINGER, Roel P. A. DULLENS, 2011. Pattern formation in colloidal explosions. In: EPL : Europhysics Letters. 94(4), 48008. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/94/48008

BibTex

@article{Straube2011-05-18Patte-39381,
  year={2011},
  doi={10.1209/0295-5075/94/48008},
  title={Pattern formation in colloidal explosions},
  number={4},
  volume={94},
  issn={0295-5075},
  journal={EPL : Europhysics Letters},
  author={Straube, Arthur V. and Louis, Ard A. and Baumgartl, Jörg and Bechinger, Clemens and Dullens, Roel P. A.},
  note={Article Number: 48008}
}

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