Fig. 6.

Demonstration of dynamic behaviour associated with smaller walled-in area (15 μm × 50 μm) containing a square lattice of bumps with a more open lattice of 600 nm between the bumps. a) Spontaneous switching of the Lo pixel location and size on the lattice as the area fraction decreases. At t=0, each domain pixels is centred and confined inside of a unit cell of 4 bumps (solid circles), at t=3.3 hrs each pixels is larger and appears to form an annulus around a bump confined by 4 unit cells (dashed circles), and at t=23 hrs the pixels have switched back to being centred inside of a unit cell (solid circles). We use the visibility of the lattice in the bright Ld regions to prove that these geometries correspond to 1 and 4 unit cells. b and c) Images demonstrating the mobility of these pixels where the arrows show spontaneous pixel motion over very short periods of time (seconds).