We designed magneto-electro-elastic piezoelectric, electromagnetic (EM) metamaterials (MEEPEM) by using a square lattice of the periodic arrays conducting wires, piezoelectric photonic crystal (PPC), and split-ring resonators (SRRs). analyzed mechanism for multi-field coupling in MEEPEM. The magnetic field EM wave excites an attractive Ampère force SRRs, which periodically compress MEEPEM, this...