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Ex distrubutions in unit cells of Triangle (a,b), SRR (e,f) and Heptagon (i,j) structures at fundamental and SHG resonance, respectively. Corresponding schematic charge distribution in unit cell of Triangle (c,d), SRR (g,h) and Heptagon (k.l) structures. See Supplementary Material for dynamic version of (a) and (b) and corresponding Ey distributions.
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