Fig. 5. (a) Schematic demonstration of a biaxially deformed graphene structure on the SiO2 nanospheres with a graphene gap Gg and wrinkle period Tg = DS + Gg. (b) Optical absorption spectra for the wrinkled graphene structure with varying Gg from 0 to 25 nm at DS = 150 nm. (c) Scaling of the fundamental-mode resonant wavelength with respect to wrinkle period Tg.
