折り畳みと展開が連動するミウラ折りチューブによるトポロジカル音響

Key Points

• The study aims to propose a tunable topological metamaterial for acoustic systems by coupling the folding and unfolding motion of Miura origami tubes.
• Proposed a system that adjusts the folded state of Miura origami tubes.
• Analyzed changes in band structure due to folding states.
• Explored control of sound localization through topological invariants.
• Alterations in folding state modified the band structure.
• Different topological numbers were connected at the interface, localizing sound pressure.
• Adjusting the folding state allowed for the loss of localization.