Fig. 4

a Reflection spectrum of the plasmonic metasurface with only the gold nanobar A. b Reflection spectrum of the plasmonic metasurface with only the gold nanobar B. c Calculated magnetic field distributions H of the metasurface at resonant wavelengths of ω_A mode. d Calculated magnetic field distributions H of the metasurface at resonant wavelengths of ω_B mode. (The thickness of both gold A and gold B is 92 nm; the width of both gold A and gold B is 92 nm; the thickness of polymer is 110 nm; the period is 1395 nm)