Extended Data Fig. 5: Orientation of the standing molecule.
From: A standing molecule as a single-electron field emitter

The histogram (left) shows all evaluated orientations of standing PTCDA molecules on the Ag(111) surface. The angle is defined as in Fig. 2d and Extended Data Fig. 3b. In total, we evaluated the orientations of 128 standing PTCDA molecules. The possible orientations on the Ag(111) surface are illustrated on the right. Black and red symbols indicate the possible positions of one of the silver atoms at the surface contact, when the other sits in the centre. See also Fig. 2d and Methods.