Graphite Pencil Drawn Lines: A Nanomaterial or Few Layer Graphene/Graphite Layered Structure

摘要

A non-conventional method of obtaining few-layer graphene (FLG) is suggested, which comprises repeatedly rubbing bulk graphite against semiconducting and insulating substrates. The obtained graphene/graphite structures consisting of rubbed-off layers behave like a semiconducting material with through-thickness anisotropy of carrier mobility reaching to 3000 cm~2/V·sec at the surface. The structure surface demonstrates more ordered and oriented character containing FLG. The suggested method allows easily obtaining graphene with pencil directly on paper, as well as graphene-based electronic components and circuits on paper and other substrates, which could enable flexible and cheap electronics. The observed phenomenon is universal, does not depend on the substrate material and could find a widespread application.