Figure 3: Elastic transmission of mono- and bilayer graphene.
From: Virtual substrate method for nanomaterials characterization
Elastic transmission (TΔN/ΔS(E), that is JΔN(E)/JΔS(E)) of monolayer graphene and bilayer graphene measured by the virtual substrate method for primary electron energies of 10 and 15 keV. The elastic transmission was calculated by the extended Mermin (EM), Monte Carlo (MC) and time-dependent density functional theory (TDDFT) methods. The total transmission was measured by low-energy electron point-source (LEEPS) microscopy22,23 corrected to the elastic transmission by the MC method. The elastic transmission was measured by the overlayer method for graphene/gold at 2.3 eV, associated with gold surface plasmons (overlayer-SP), and for graphene/SiO2 samples at 78 and 503 eV (overlayer).
