Constructing Graphene Grain Boundaries to Control Graphene Plasmons

Although graphene offers tremendous advantages for plasmon technologies, it is often difficult to co-excite multiple graphene plasmons on a highly dense single graphene sheet. In an article recently published in the journal ACS Nano, the researchers reported heteroepitaxially grown polycrystalline graphene monolayer with patterned gradient grain boundary (GB) density to aid the development of single atomic layer nanoscience, integrated photonics, and optoelectronics.