Self-assembly of magnetic colloids on a honeycomb lattice of triangular shaped minima of a magnetic substrate. (Top) Direction of the applied magnetic field. (Middle) Microscopy images of the structures that form. (Bottom) Energy landscape of the system.
From the article:
Geometric Frustration of Colloidal Dimers on a Honeycomb Magnetic LatticePietro Tierno
Phys. Rev. Lett. 116, 038303 (2016)
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