  Graphene nanopatterning on highly oriented pyrolytic graphite (HOPG) has
previously been shown using both atomic force microscopy (AFM) and scanning
tunneling microscopy (STM) based techniques, including folding of intrinsic
step edges and electrochemical etching or cutting in graphene layers. We here
report development of a new technique, combining electrochemical etching and
folding using mechanical STM manipulation. Our technique shows unprecedented
control of nanoscale folding of graphene in multiple folding steps and could be
a route towards STM study of magic angle graphene with in-situ fabricated
samples.
