Constitutional dynamics expressed in chirality switching of the caged trimeric unit. Constitutional dynamics expressed in chirality switching of the caged trimeric unit. The blurred STM imaging is a result of intracavity decay and reassembly proceeding in parallel with rapid rotational motion of the caged dynamer. (A) The envelope of the intracavity molecular features reflects a superposition of the two enantiomers (δ and λ) of the chiral rotator (VB = 0.5 V, IT = 0.1 nA, TSample = 145 K), as demonstrated by the model in B. Dirk Kühne et al. PNAS 2010;107:50:21332-21336 ©2010 by National Academy of Sciences