Experimental observation of local electrical signature of suspended graphene grown via chemical vapour deposition method
作者： Won-Hwa Park , Myunghee Jung , Wonbae Park , Jin-San Moon , Jungmin Lee
DOI: 10.1088/0022-3727/47/1/015306
关键词: Graphene nanoribbons 、 Graphene oxide paper 、 Optoelectronics 、 FOIL method 、 Modulation 、 Graphene 、 Amplitude 、 Electrostatic force microscope 、 Materials science 、 Chemical vapor deposition 、 Nanotechnology
摘要: We employ electrostatic force microscope (EFM) techniques to explore local electrical properties of suspended graphene on Cu foil, SiO2/Si and PET substrate. By using modulation amplitude in a tapping mode atomic tip, we can obtain distinguished mapping various substrates. In particular, at nano-valley domains surface, relatively weaker attractive interaction is observed than nano-peak domains. SiO2/Si, find that distribution still follows the substrate surface morphology. Furthermore, employing EFM system be suggested as facile tool investigate performance graphene.
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