title: Thickness-dependent morphologies of gold on n-layer graphenes.
abstract: We report that gold thermally deposited onto n-layer graphenes interacts differently with these substrates depending on the number layer, indicating the different surface properties of graphenes. This results in thickness-dependent morphologies of gold on n-layer graphenes, which can be used to identify and distinguish graphenes with high throughput and spatial resolution. This technique may play an important role in checking if n-layer graphenes are mixed with different layer numbers of graphene with a smaller size, which cannot be found by Raman spectra. The possible mechanisms for these observations are discussed.
authors.affiliation: National Centre for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Haiqing
authors.initials: H
authors.lastname: Zhou
authors.forename: Caiyu
authors.initials: C
authors.lastname: Qiu
authors.forename: Zheng
authors.initials: Z
authors.lastname: Liu
authors.forename: Huaichao
authors.initials: H
authors.lastname: Yang
authors.forename: Lijun
authors.initials: L
authors.lastname: Hu
authors.forename: Ji
authors.initials: J
authors.lastname: Liu
authors.forename: Haifang
authors.initials: H
authors.lastname: Yang
authors.forename: Changzhi
authors.initials: C
authors.lastname: Gu
authors.forename: Lianfeng
authors.initials: L
authors.lastname: Sun
mesh_terms: D006046:Gold / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry; D010316:Particle Size; D012825:Silicon / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D006046:Gold; D012822:Silicon Dioxide; D006108:Graphite; D012825:Silicon