Fig. 1: Conceptual design and assembly of the rotary mechanism.
From: A nanoscale reciprocating rotary mechanism with coordinated mobility control

a Sketches of the rotational mechanism in a top view (top) and side view (bottom). The shaft is depicted in gray, while the stator units are in blue, green, and orange. b Sketches of the stator units with pawls in the closed (top) and open (bottom) conformations. c Sketch of the camshaft. Black arrows indicate features used to prevent the camshaft from escaping the stator. d Sketch of the camshaft when trapped inside the stator. Pawls of the orange stator unit are not drawn. Black arrows as in c. e Sketch of the assembly steps for building the rotary mechanism. Red: connecting strands, gray: scaffold strand. f Top: sketch of the shaft release from the stator unit via toehold-mediated strand displacement. Bottom: same reaction but performed within the fully assembled stator. Green: invader strands.