Clean Graphene Surfaces: A Force‐Engineered Lint Roller for Superclean Graphene (Adv. Mater. 43/2019)

A new approach to clean the surface of graphene is reported by Hailin Peng, Zhongfan Liu, and co-workers in article number 1902978, who use a force-engineered “lint roller” to selectively removing the graphene's intrinsic surface contaminants. The as-obtained super-clean graphene can be transferred to dielectric substrates with significantly reduced polymer residues, and it exhibits superior electronic and optical properties such as ultrahigh carrier mobility and low contact resistance.