Thermal expansion within a chain of magnetic colloidal particles

Details Thermal expansion within a chain of magnetic colloidal particles Thermal expansion within a chain of magnetic colloidal particles

2009-06-19

arxiv.org/abs/0906.3707v1

Phys. Rev. E, 80, 011401 (2009)

Physics

Condensed Matter

Soft Condensed Matter

5 pages and 3 figures

Scientific paper

We study the thermal expansion of chains formed by self-assembly of magnetic colloidal particles in a magnetic field. Using video-microscopy, complete positional data of all the particles of the chains is obtained. By changing the ionic strength of the solution and the applied magnetic field, the interaction potential can be tuned. We analyze the thermal expansion of the chain using a simple model of a one dimensional anharmonic crystal of finite size.

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