Materials design study demonstrates unbounded piezoelectric sensitivity in composite lattice structures, indicating potential for highly sensitive sensors and tunable vibration damping.
Lattice structures are presented with a piezoelectric sensitivity, d, much larger in magnitude than that of material comprising the lattice ribs. Large sensitivity is achieved by using piezoelectric bimorph elements as ribs; these bend in response to electric input, giving rise to a much larger displacement than for axial elements. Complex electrical connectivity is helpful, but not necessary; surface contact can be sufficient. Lattices are amenable to piezoelectric vibration damping. Piezoelectric sensitivity can be arbitrarily large and is unbounded.
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Roderic S. Lakes (2013) studied this question.
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