Figure 3.

Typical membrane configurations, for several values of J, and for two values of the curvature-composition coupling, namely γ = 5 (top row) and γ = 3 (lower row). The lattice size is L = 200. (Blue) Lo domains; (yellow) ld domains. The snapshots left of the vertical line (J ≤ 0.7) correspond to the raft region f₂ of the phase diagram of Fig. 1. In this case, the membrane is characterized by composition fluctuations of typical size ∼(κ/σ)^1/2 (18), but there is no long-range order. The snapshots at J = 0.9 show modulated phases (region mod of Fig. 1), where the domains have crystallized into lamellae (in two dimensions, we do not expect the orientational order to be long-ranged, but rather to decay algebraically with system size (37)). To see this figure in color, go online.