Fig. 5: Spiral modulation of hybrid crystals.
From: Logarithmic and Archimedean organic crystalline spirals
a Diagram of the transformation of a planar spiral into a spatial spiral. b An actuator being transformed from a planar spiral into a three-dimensional spiral (helix). c Adjustment of the pitch of the helix by using a needle to gradually pull its tip outward. d, e Hybrid crystalline helices with opposite handedness, left-handed (S, d) and right-handed (R, e). Scale bars, 400 μm.
