Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 138, Issue 16, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4801438
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Funding
- MIUR-PRIN
- NWO
- [ERC-226207-PATCHYCOLLOIDS]
- [ITN-234810-COMPLOIDS]
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We present a numerical study on the phase diagram for a simple model of Janus colloids, including ordered and disordered structures. Using a range of techniques, we generate a set of crystal structures and investigate their relative stability field in the pressure-temperature and temperature-density planes by means of free-energy calculations and thermodynamic integration schemes. We find that despite the Janus colloids' simple architecture, they form stable crystal structures with complicated bond-topologies on an underlying face-centered-cubic or hexagonal-close-packed lattice. In addition, we find a phase consisting of wrinkled bilayer sheets, competing with both the fluid and the crystal phases. We detect a metastable gas-liquid coexistence which displays a micellization-driven re-entrant behavior. (C) 2013 AIP Publishing LLC.
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