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Identification of epitaxial graphene domains and adsorbed species in ambient conditions using quantified topography measurements
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10.1063/1.4748957
/content/aip/journal/jap/112/5/10.1063/1.4748957
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/5/10.1063/1.4748957

Figures

Image of FIG. 1.
FIG. 1.

Area of 1LG and 2LG domains, where the 1LG is decorated with 0D adsorbates. Top row left to right: topography, deflection error, and EFM phase images. The scale bar is 1 μm. Middle row: region A showing 1LG and 2LG domains. Bottom row: region B showing a 1LG domain only. For middle and bottom rows left to right: topography, step height profile, and histogram obtained from the dashed box in the topography image. The colored/white lines and frame highlight the location of corresponding profiles and the dotted black lines show the histogram areas. On both histograms: the green lines show the Gaussian fits to individual peaks, whereas the red line shows a multiple peak fit.

Image of FIG. 2.
FIG. 2.

Area of 1LG and 2LG domains without significant 0D adsorbate decoration. Top row left to right: topography, deflection error, and EFM phase images. The scale bar is 1 μm. Middle row: region A showing 1LG and 2LG domains. Bottom row: region B showing a 1LG domain only. For middle and bottom rows left to right: topography, step height profile, and histogram obtained from the dashed box in the topography image. The colored/white lines and frame highlight the location of corresponding profiles and the dotted black line shows the histogram area. On both histograms: the green lines show the Gaussian fits to individual peaks, whereas the red line shows a multiple peak fit.

Image of FIG. 3.
FIG. 3.

Schematic diagram showing the arrangement of graphene, IFL, 2D, and 0D adsorbates corresponding to (a) Fig. 1 and (b) Fig. 2.

Tables

Generic image for table
Table I.

Comparison of experimental results and model predictions for the step height for Figs. 1 and 2. All height values are in picometers and the minus sign signifies that the 1LG domain is below the 2LG domain. The model results show a range of possible options for the height between the graphene domains as theorised by the referenced works. The corrected values simply add 400 pm to the 1LG to give recalculated step heights.

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/content/aip/journal/jap/112/5/10.1063/1.4748957
2012-09-06
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Identification of epitaxial graphene domains and adsorbed species in ambient conditions using quantified topography measurements
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/5/10.1063/1.4748957
10.1063/1.4748957
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