Fig. 4


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Simulated structures for the observation of the symmetry breaking. Studied structures: (a) perfect 4-fold twist symmetry, (b) broken symmetry in 1 way, and (c) broken symmetry in two ways. (d) Dispersion diagram using the dimensions: h p  = 1.2 mm, w p  = 1 mm, r i   =  1 mm, r o  = 2.5 mm, and p = 10 mm. The first symmetry breaking is obtained by shifting pin 1 (green) and pin 3 (violet) by 1 mm according to green arrows. The second breaking is obtained by reducing heights of pin 1 (green) and 4 (red) by 0.6 mm according to red arrows.

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