  We demonstrate that circular graphene ring under a shear stress displays
strong pseudo-magnetic fields. We calculate the pseudo-magnetic field both from
continuum elasticity theory as well as molecular dynamics simulations. Stable
wrinkles are induced by shear deformations and lead to enhancement of the
pseudo-magnetic field. The strong pseudo-magnetic field found here can be
observed by imaging graphene flake at the atomic level e.g. through scanning
tunneling microscope.
