Send to

Choose Destination
Phys Rev Lett. 2009 Sep 18;103(12):127801. Epub 2009 Sep 15.

Vortexlike topological defects in nematic colloids: chiral colloidal dimers and 2D crystals.

Author information

J. Stefan Institute, 1000 Ljubljana, Slovenia.


We show that chiral ordering of the underlying complex fluid strongly influences defect formation and colloidal interactions. Nonsingular defect loops with a topological charge -2 are observed, with a cross section identical to hyperbolic vortices in magnetic systems. These loops are binding spontaneously formed pairs of colloidal particles and dimers, which are chiral objects. Chiral dimer-dimer interaction weakly depends on the chirality of dimers and leads to the assembly of 2D nematic colloidal crystals of pure or "mixed" chirality, intercalated with a lattice of nonsingular vortexlike defects.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center