Mechanical properties of carbynes investigated by ab initio total-energy   calculations
  As sp carbon chains (carbynes) are relatively rigid molecular objects, can we exploit them as construction elements in nanomechanics? To answer this question, we investigate their remarkable mechanical properties by ab-initio total-energy simulations. In particular, we evaluate their linear response to small longitudinal and bending deformations and their failure limits for longitudinal compression and elongation. 
Ivano E. Castelli, Paolo Salvestrini, Nicola Manini
cond-mat.mes-hall