Topological electric current from time-dependent elastic deformations in   graphene
  We show the possibility of inducing an edge charge current by applying time-dependent strain in gapped graphene samples preserving time reversal symmetry. We demonstrate that this edge current has the same origin as the valley Hall response known to exist in the system. 
Abolhassan Vaezi, Nima Abedpour, Reza Asgari, Alberto Cortijo, and   Mar\'ia A. H. Vozmediano
cond-mat.mes-hall cond-mat.str-el