Cooperation, and a gift from Mr. Lewis van Amerongen.

Abstract Structural distortions in nano-materials can in-duce dramatic changes in their electronic properties. This situation is well manifested in graphene, a two-dimensional honeycomb structure of carbon atoms with only one atomic layer thickness. In particular, strained graphene can result in both charging effects and pseudo-magnetic fields, so that controlled strain on a perfect graphene lattice can be tai-lored to yield desirable electronic properties. Here we de-scribe the theoretical foundation for strain-engineering of the electronic properties of graphene, and then provide experi-mental evidences for strain-induced pseudo-magnetic fields and charging effects in monolayer graphene. We further demonstrate the feasibility of nano-scale strain engineering for graphene-based devices by means of theoretical simula-tions and nano-fabrication technology