研究目的
Investigating the growth of large-area monolayer graphene for high-current quantum resistance metrology applications.
研究成果
Combining FTG and PASG methods enables the reproducible fabrication of centimeter-scale, high-quality graphene samples suitable for high-current QHE devices, enhancing metrological applications.
研究不足
The study focuses on the growth and initial testing of graphene for QHE devices; long-term stability and scalability for industrial applications are not addressed.
1:Experimental Design and Method Selection:
The study combines face-to-graphite (FTG) and polymer-assisted sublimation growth (PASG) methods for graphene growth.
2:Sample Selection and Data Sources:
Polished SiC(0001) substrates were used.
3:List of Experimental Equipment and Materials:
Growth chamber, confocal laser scanning microscopy (CLSM), Raman spectroscopy, nanovolt meter system.
4:Experimental Procedures and Operational Workflow:
Samples were cleaned, polymer applied, annealed, and heated for graphene growth. Magneto-transport measurements were conducted.
5:Data Analysis Methods:
Raman spectroscopy for material quality, CLSM for homogeneity, and nanovolt meter for resistance measurements.
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