Currently, space-coiling acoustic metamaterials are static, requiring manual reconfiguration for sound-field modulation. Here, we introduce an approach to enable active reconfiguration, using standalone dynamic space-coiling unit cells called dynamic meta-bricks. Unlike their static counterparts, these meta-bricks, house an actuatable soft robotic-inspired magnetorheological elastomeric flap. This flap operates like a switch to directly control the transmitted ultrasound. For scalability, we present a hybrid stacking method, which vertically combines static and dynamic meta-bricks. This allows us to form a surface-integrated metasurface through concatenating variations of either fully static or hybrid stacks. By actuating dynamic metasurface sections, we experimentally demonstrate accurate modulation of λ/4 (≈2 mm) between two acoustic twin traps. We shift a levitated bead between the traps, validating that full-array operational dynamicity is achievable with partial, localised actuation. This work showcases the synergy between active and passive reconfigurability, opening possibilities to develop multifunctional metamaterials with additional degrees of freedom in design and control.

目前，空间螺旋声学超材料是静态的，需要手动重新配置以进行声场调制。在这里，我们介绍了一种使用称为动态元砖的独立动态空间螺旋单元来实现主动重新配置的方法。与静态对应物不同，这些元砖块装有一个可驱动的软机器人磁流变弹性体瓣。该瓣膜的工作原理就像一个开关，可以直接控制发射的超声波。为了可扩展性，我们提出了一种混合堆叠方法，它垂直组合静态和动态元块。这使我们能够通过串联完全静态或混合堆栈的变体来形成表面集成的超表面。通过驱动动态超表面部分，我们通过实验证明了两个声学双陷阱之间的 λ/4 (≈2 mm) 的精确调制。我们在陷阱之间移动悬浮珠，验证通过部分局部驱动可以实现全阵列操作动态性。这项工作展示了主动和被动可重构性之间的协同作用，为开发具有额外设计和控制自由度的多功能超材料提供了可能性。