Phononic Bandgap Programming in Kirigami By Unique Mechanical Input Sequencing

This study investigates the programming of elastic wave propagation bandgaps in periodic and multi-stable metamaterials by intentionally uniquely sequencing its constitutive mechanical bits. To this end, stretched kirigami is used as a simple versatile testing platform. Each bit can switch between two stable equilibria with different external shapes (aka. “(0)” “(1)” states). Therefore, designing sequence (0) (1) bits, one fundamentally change underlying periodicity thus program phononic bandgap frequencies. develops an algorithm to identify unique periodicities generated assembling “n-bit strings” consisting n Based on simplified geometry these n-bit strings, also formulates theory uncover rich mapping input output bandgaps. The theoretical prediction experiment results confirm that effective for phonic Moreover, additionally fine-tune adjusting global stretch. Overall, elucidate new strategies dynamic responses architected material systems.