The mode shapes of piezoelectric metamaterials are tuned by manipulating spatially the electrical boundary conditions of the piezo-elements. in a desired and controlled manner. in order to tailor the wave propagation characteristics through these metamaterials. The boundary conditions of the piezo-elements are controlled by using inductive shunting networks. https://www.diegojavierfares.com/amazing-price-Rubbermaid-8-Gallon-Plastic-Home-Office-Wastebasket-Trash-Can-with-Liner-Lock-p12316-big-deal/