  The electronic and optical properties of graphene can be precisely tuned by
generating deterministic arrangements of strain features. In this paper, we
report the formation of widespread and controlled buckling delamination of
monolayer graphene deposited on hexagonal boron-nitride promoted by a
significant squeezing of the graphene flake and induced by polymeric
micro-actuators. The flexibility of this method offers a promising technique to
create arbitrary buckling geometries and arrays of wrinkles which could also be
subjected to iterative folding-unfolding cycles. Further development of this
method could pave the way to tune the properties of several kinds of other
two-dimensional materials, such as transition metal dichalcogenides, by
tailoring their surface topography.
