Fig 3 - Nanogears Mechanics: From a Single Molecule to Solid-State Nanogears on a Surface
STM images showing a single HB-NBP molecule (a) before and (b) after manipulation. An atomic sized impurity bind to an elbow shown in (a) appears as a small protrusion from center of molecule after being mounted on top of it shown in (b). I = 10 pA, V = 100 mV.