Figure 5

Diverse patterns prepared by chiral microstructures on flat and complex surfaces. (a–c) Top view and (d–f) 45° tilted SEM images of three-, four- and six-fold symmetric patterns with three, four and six spiral lobes, respectively. (g, h) SEM images of microscale letters of ‘L’ (left) and ‘R’ (right) arranged with left- and right-handed microstructures, respectively. (i) Chiral microstructures integrated in a nonplanar substrate (inset: 45° tilted SEM image). (j) A Fibonacci number pattern fabricated with topological charge l=3.