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. 2020 Mar 3;20(5):1380. doi: 10.3390/s20051380

Figure 3.

Figure 3

The phase velocity dispersion curves of Rm, Sm, R3, and R4 modes for SiO2 thickness-to-wavelength ratio ranging (a) from 0.01 to 0.05 and (b) from 0.001 to 0.01.