Chiral colloidal clusters

D. Zerrouki, J. Baudry, D. Pine, P. Chaikin and J. Bibette ()
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D. Zerrouki: Laboratoire Colloïdes et Matériaux Divisés, ESPCI, UPMC, CNRS, ParisTech, 10 rue Vauquelin, 75005 Paris, France
J. Baudry: Laboratoire Colloïdes et Matériaux Divisés, ESPCI, UPMC, CNRS, ParisTech, 10 rue Vauquelin, 75005 Paris, France
D. Pine: Center for Soft Matter Research, New York University, 4 Washington Place, New York, New York 10003, USA
P. Chaikin: Center for Soft Matter Research, New York University, 4 Washington Place, New York, New York 10003, USA
J. Bibette: Laboratoire Colloïdes et Matériaux Divisés, ESPCI, UPMC, CNRS, ParisTech, 10 rue Vauquelin, 75005 Paris, France

Nature, 2008, vol. 455, issue 7211, 380-382

Abstract: Chiral colloidal clusters To advance the use of colloids as building blocks for the fabrication of large-scale complex structures for applications in nanotechnology, it is desirable to give them the functionality and variability found in chemistry. A step in that direction has now been achieved with the development of magnetic colloids that can rapidly self-assemble into a variety of isomeric forms. Depending on the shape of the colloidal blocks relative to their spontaneous direction of magnetization, these colloids self-assemble into structures with controlled helicity. If the size ratio between the colloidal spheres in the assembly is large enough, a single helicity is chosen, right or left. This work opens up a new link between colloidal science and chemistry that could lead to the assembly of a wide variety of nanoparticles and mesopolymers.

Date: 2008
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DOI: 10.1038/nature07237

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