  We demonstrate high resolution scanning fluorescence resonance energy
transfer 10 microscopy between a single nitrogen-vacancy center as donor and
graphene as acceptor. 11 Images with few nanometer resolution of single and
multilayer graphene structures were 12 attained. An energy transfer efficiency
of 30% at distances of 10nm between a single 13 defect and graphene was
measured. Further the energy transfer distance dependence of 14 the
nitrogen-vacancy center to graphene was measured to show the predicted d-4 15
dependence. Our studies pave the way towards a diamond defect center based
versatile 16 single emitter scanning microscope.
