<p>Acoustic meta-structured materials (AMSMs), acoustic manipulation, and acoustic manufacturing represent important research directions at the intersection of acoustics, materials science, and advanced manufacturing. These three fields center on engineered acoustic field generation, contactless object manipulation, and acoustically enabled fabrication, respectively. However, a unified framework that connects acoustic field shaping, acoustic manipulation, and practical manufacturing implementation, together with the underlying physical mechanisms, has not yet been established systematically. This review first examines three core mechanisms by which AMSMs shape acoustic fields—bandgap tuning, effective parameter modulation, and phase gradient control—and clarifies the physical basis and design principles of controllable acoustic field engineering. It then reviews acoustic manipulation strategies by classifying them into conventional approaches based on representative wave field configurations and unconventional approaches enabled by acoustic holography, AMSM-based localization, and acoustic streaming. Finally, through the complementary pathways of acoustically assisted manufacturing and direct acoustic manufacturing, it discusses the advantages and potential roles of acoustic manipulation technologies in advanced manufacturing. On this basis, emerging trends and future research directions are summarized, with the aim of guiding further advances in dynamic modeling of acoustic systems, high-precision active control, and intelligent acoustic manufacturing.</p>

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Recent advances in acoustic meta-structured materials, acoustic manipulation, and acoustic manufacturing

  • Yu-Ping Lin,
  • Hong-Qing Dai,
  • Xiao-Ping Wang

摘要

Acoustic meta-structured materials (AMSMs), acoustic manipulation, and acoustic manufacturing represent important research directions at the intersection of acoustics, materials science, and advanced manufacturing. These three fields center on engineered acoustic field generation, contactless object manipulation, and acoustically enabled fabrication, respectively. However, a unified framework that connects acoustic field shaping, acoustic manipulation, and practical manufacturing implementation, together with the underlying physical mechanisms, has not yet been established systematically. This review first examines three core mechanisms by which AMSMs shape acoustic fields—bandgap tuning, effective parameter modulation, and phase gradient control—and clarifies the physical basis and design principles of controllable acoustic field engineering. It then reviews acoustic manipulation strategies by classifying them into conventional approaches based on representative wave field configurations and unconventional approaches enabled by acoustic holography, AMSM-based localization, and acoustic streaming. Finally, through the complementary pathways of acoustically assisted manufacturing and direct acoustic manufacturing, it discusses the advantages and potential roles of acoustic manipulation technologies in advanced manufacturing. On this basis, emerging trends and future research directions are summarized, with the aim of guiding further advances in dynamic modeling of acoustic systems, high-precision active control, and intelligent acoustic manufacturing.