6533b83afe1ef96bd12a71ed

RESEARCH PRODUCT

One- and Two-Dimensional Diffusion of Metal Atoms in Graphene

Florian BanhartLitao SunLitao SunYanjie Gan

subject

Work (thermodynamics)Materials scienceMacromolecular SubstancesSurface PropertiesDiffusionMolecular Conformationchemistry.chemical_elementMolecular physicslaw.inventionDiffusionBiomaterialsMetallawMaterials TestingNanotechnologyGeneral Materials ScienceParticle SizePlatinumNanotubes CarbonGrapheneCarbon chemistryGeneral ChemistryAtmospheric temperature rangechemistryvisual_artvisual_art.visual_art_mediumGraphiteGoldParticle sizeAtomic physicsCrystallizationCarbonBiotechnology

description

In the present work, individual Au or Pt atoms in layersconsisting of one or twographene planes have been monitoredin real time at high temperature by high-resolution TEM. Weobtain information about the location of metal atoms ingrapheneandthediffusionmechanisms.Activationenergiesfordiffusion are obtained in a temperature range close to thetemperature of the technically important metal-assisted CVDprocess.Thematerialwassynthesizedinanarcdischarge

https://doi.org/10.1002/smll.200700929