Figure 1.

Dispersion relations of graphene surface plasmons (GSPs) on monolayer graphene with different material on two sides. Here, we use the graphene parameters of μc = 0.2 eV, τ-1 = 1 meV.

Yuan et al. Nanoscale Research Letters 2014 9:90   doi:10.1186/1556-276X-9-90
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