Controllable Sliding Transfer of Wafer-Size Graphene

摘要: The successful isolation of high‐quality single‐layer or few‐layer graphene by mechanical exfoliation has unleashed a flurry research activities in 2D carbon worldwide over the past few years.1, 2, 3, 4, 5 ease production and low cost make graphite most popular route to prepare whenever wherever possible.6, 7, 8 However, this generally involves using either an adhesive tape attach surface force vertically peel off plus layers attached1, rubbing against another material slide sheets from bulk.6, 9 Thus, technique fails provide sufficient output yield, large size layer‐number homogeneity for many applications owing multiple cleavage planes strong interlayer van der Waals interactions normal direction.8 Moreover, produced often contains exfoliating agent remnants such as glues due pre‐press obtain compact contact following violent peeling achieve separation, micromechanical action may induce strains on layer during adherence substrate introduce various types defects, including atomic vacancies, wrinkles cracks, microscopic corrugation. These inhomogeneities defects lower electrical performance devices since they break translational rotational symmetry.10, 11 Some studies have been conducted improve controllability process. Instead which relies enforced press full contact, zinc was implemented multilayer flakes realize better via refined sputtering process subsequently mildly removed diluted hydrochloric acid, resulted controllable removal single material, one at time.12 procedure can be repeated remove additional layers, nevertheless, improved transfer method quite cumbersome still whole uniformity as‐obtained graphene. In conclusion, core problem lies interaction exfoliated improper mode apply force, hampers transferred onto target substrates. Accordingly, we attempt design innovative based uniform easily support applying sliding parallel interfacial shear slip, not only inherits simplicity traditional but also improves interface lowers energy, thus its size.