  The ability to fabricate dense small features over a large area is important
for graphene plasmonics. We present the first self-assembled graphene plasmonic
resonators operating in the mid-IR. The resonators are 35 nm in diameter with
20 nm spacing and cover a centimeter sized area. The resonators exhibit a very
broad resonance. We fit our data using a drude model and combine it with SEM
data to investigate the contribution to broadening from our process. We find
that the self-assembly does not contribute significantly to the broadening
observed.
