Fig. 6: Biomimetic simulation of helical motions with artificial hybrid spirals and helices.
From: Logarithmic and Archimedean organic crystalline spirals
a Examples of creepers that use tendrils for attachment to solid surfaces. b Photographs of a hybrid crystal actuator simulating the winding of a plant tendril. c Model of an object rolling. d An actuator curling into a wheel shape and rolling down a slope when heated with a nitrile-gloved finger. e Photographs of hybrid crystals crossing through the aperture.
