Observation of condensed phases of quasi-planar core-softened colloids

Details Observation of condensed phases of quasi-planar core-softened colloids Observation of condensed phases of quasi-planar core-softened colloids

2007-07-25

arxiv.org/abs/0707.3767v1

Phys. Rev. Lett. 99, 248301 (2007)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.99.248301

We experimentally study the condensed phases of repelling core-softened spheres in two dimensions. The dipolar pair repulsion between superparamagnetic spheres trapped in a thin cell is induced by a transverse magnetic field and softened by suitably adjusting the cell thickness. We scan a broad density range and we materialize a large part of the theoretically predicted phases in systems of core-softened particles, including expanded and close-packed hexagonal, square, chain-like, stripe/labyrinthine, and honeycomb phase. Further insight into their structure is provided by Monte Carlo simulations.

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