Figure 5.

Theoretical frequency ranges of gaps for square lattices of cylindrical air holes with different lattice parameters. The ratios r/a and h/a were set as 0.38 and 0.4, respectively. The dielectric constant of Si was set at ϵ = 11.56.

Recio-Sánchez et al. Nanoscale Research Letters 2012 7:449   doi:10.1186/1556-276X-7-449
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