▎ 摘　　要

Recently, graphene plasmons with an excellent tenability by doping or gating have been drawing increasing interest. In this work, we designed graphene-based superlens to achieve subwavelength optical imaging. We systematically investigated the imaging property in monolayer and multi-layer graphene structures and discussed in detail the effects of possible physical quantities. We found that the image resolution of the graphene-based superlens could be better than lambda/50, since graphene plasmons could significantly amplify evanescent waves carrying the high spatial frequency information of the object, and restore them at the image plane.