Fig. 5
From: A chiral molecular propeller designed for unidirectional rotations on a surface
Propeller rotation by mechanical manipulation. a A drawing depicting the mechanical rotation. b Mechanical manipulation signals during a single step rotation of M and P propellers. Inset: The arrows indicate the path and direction of manipulations. The top manipulation signal is vertically displaced 1.5 Å for clarity. c The mechanical rotation process. The dashed circles indicate the propeller bottom and the position of a phenyl ring underneath. d STM image before and e after a single propeller blade rotation. White arrow in d indicates the manipulation direction [Imaging parameters: Vt = −0.1 V, It = 50 pA]. f An initial STM image of a left-handed molecular propeller. g and h After single step rotations into clockwise direction. i STM image of a right-handed propeller and j and k are after stepwise rotations into anticlockwise directions. [Imaging parameters: Vt = −0.1 V, It = 50 pA] l and m Rotation angle as a function of count for the forward and reverse rotations, respectively
