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. 2016 Apr 15;2(4):e1501518. doi: 10.1126/sciadv.1501518

Fig. 5. Transport properties in the BLG affected by surface CO2 physisorption.

Fig. 5

(A to C) Cross-sectional charge density difference distribution along the CO2 molecule: in freestanding BLG, in BLG placed on a defective SiO2 surface, and in BLG placed on an ideal SiO2 surface, respectively. (D) Top view of the simulated charge density difference distribution in freestanding BLG with one CO2 adsorption event. Blue and red denote electron density enrichment and depletion with an isovalue of 6 × 10−6 e/Å3 in all simulations, respectively. (E) Coulomb potential energy distribution on the x axis on the BLG along a CO2 molecule. The blue dashed line indicates the thermal energy at room temperature. The thin dotted line marks the location of a CO2 molecule. (F) Schematic of partial conducting channel shutoff in BLG by Coulomb impurity scattering.