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. 2017 Jun 19;7:3843. doi: 10.1038/s41598-017-04235-1

Figure 3.

Figure 3

Comparison of numerical dispersion relation and experimental transmission results along different crystallographic directions (samples with l = 5.0 mm and A = 1.0 mm). (a) Numerical dispersion relation (d = 0.52 mm) with complete band gaps indicated in grey. (b) Experimental transmission spectrum of a sample with transmission direction (100), (c) (110) and (d) (111) with a thickness of 0.52 mm 0.08 mm.