What question did this study set out to answer?

This research aims to measure the work function difference between single and bilayer graphene grown on silicon carbide.

Local work function measurements of epitaxial graphene

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Randomized trial measures work function difference in graphene layers, indicating layer characteristics.

This research aims to measure the work function difference between single and bilayer graphene grown on silicon carbide.
Used Kelvin probe force microscopy to measure work function.
Investigated single layer and bilayer graphene films on 6H-SiC(0001).
Combined work function measurements with high-resolution topographic imaging.
Found work function difference of 135±9 meV between single and bilayer graphene.
Bilayer films exhibit a higher work function compared to single layer films.
Resolved complex step structure of epitaxial graphene concerning substrate and graphene layers.

Filleter et al. (2008) studied this question.

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