Thickness-dependent morphologies of gold on n-layer graphenes.
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.
Zhou
Haiqing
H
National Centre for Nanoscience and Technology, Beijing, 100190, China.
Qiu
Caiyu
C
Liu
Zheng
Z
Yang
Huaichao
H
Hu
Lijun
L
Liu
Ji
J
Yang
Haifang
H
Gu
Changzhi
C
Sun
Lianfeng
L
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
D008567:Membranes, Artificial; D006046:Gold; D012822:Silicon Dioxide; D006108:Graphite; D012825:Silicon