Dr. Eva G. Noya et al have studied the phase diagram of a two-dimensional system of disk particles with three patches distributed symmetrically along the particle equator (read more). Due to the geometry of the particles, this system shows a rich phase diagram that goes from a nearly empty honey-comb lattice (at low temperatures),to an almost filled lattice at high temperatures.
Their work, along with our picture, made it to the cover of Soft Matter.