Orientation Control of Graphene Flakes by Magnetic Field: Broad Device Applications of Macroscopically Aligned Graphene.

Lin, Feng; Zhu, Zhuan; Zhou, Xufeng; Qiu, Wenlan; Niu, Chao; Hu, Jonathan; Dahal, Keshab; Wang, Yanan et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

Owing to a large diamagnetism, graphene flakes can respond and be aligned to magnetic field like a ferromagnetic material. Aligned graphene flakes exhibit emergent properties approaching single-layer graphene. Anisotropic optical properties also give rise to a magnetic writing board using graphene suspension and a bar magnet as a pen. This simple alignment technique opens up enormous applications of graphene.