Table 2.

Load configurations and associated experimental bandgap tuning results.

Configuration	1	2
Load per each semi-ellipsoides face [N]	8.0 N	16.0 N
Resulting δ displacement (refer to Fig. 5b) [mm]	0.35 mm	0.70 mm
Ratio between imposed displacement $\left(\frac{2\delta }{3}\right)$ and unit cell dimension a [%]	+0.47%	+0.93%
Experimental $\mathrm{\Delta }{f}_{start,1^{st}bg}$ (with respect to undeformed conf, at −40 dB) [%]	−0.9%	−2.1%
Experimental $\mathrm{\Delta }{f}_{end,1^{st}bg}$ (with respect to undeformed conf, at −40 dB) [%]	+ 1.7%	+ 3.2%
Experimental bandgap increase ($\mathrm{\Delta }\frac{gap}{midgap}$ with respect to undeformed conf, at −40 dB) [%]	+ 3.1%	+ 6.2%