Figure 4. Chiral assembly of colloidal particles.

(a,b) Colloidal particles trapped in the disclination lines generated from spiral defects of (s, c)=(1, π/6) and (1, 0) (a), and (s, c)=(1, −π/6) and (1, 0) (b), on the front and rear substrates, respectively. The white dashed lines indicate the direction along which the cross-sectional profile was measured and the solid white arrows indicate the defect centre that exists on the front substrate. Scale bars, 20 μm. (c,d) TPEM profile along the disclination line, corresponding to a,b. The top and bottom of each figure corresponds to the front and rear substrates, respectively.