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We reported the direct graphene transferring tech- nology to SiO2 substrate using self-assembly monolayer (SAM) last year. In this report, this graphene transferring technique was improved by applying other kinds of SAM with silane coupling treatment. In the former report, the SAM was deposited on the substrate after the application of precursor, however, the silane modified SAM was applied to the...
The biosensor platform of graphene material has grown rapidly in the past few years due to their unique properties in electrical, thermal conductivity, large surface area, high fracture strength, high young modulus and biocompatibility. In this work, the chemically modified graphene oxide solutions were studied for electrical performance toward biosensor applications. The graphene oxide solutions...
Large scale single-crystalline graphene was achieved on copper foils with CH4 as the precursor with a sandwich method. With a PMMA-assisted method, single-crystalline graphene was transferred to the marked SiO2/Si substrate. Quantum Hall devices will be fabricated by E-beam lithography and metallization. And, quantum Hall effect will be measured.
Field effect mobility of the graphene transferred on the SiO2/Si substrate scatters in various reports and is limited to a typical value of ~10,000 cm2/Vs. Without understanding the interaction between graphene and SiO2, it is difficult to improve transport properties. This paper discusses effects of various plasma treatments and reoxidization of the SiO2 surface on graphene characteristics.
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