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<p>Recent advancements in shape memory materials (SMMs) and auxetic materials have created new opportunities for next-generation engineering applications. SMMs, including alloys, polymers, ceramics, and gels, can recover their original shape in response to external forces, enabling adaptive and self-healing systems. Auxetic materials with a negative Poisson’s ratio offer exceptional energy absorption, impact resistance, and mechanical tunability, making them ideal for aerospace, biomedical, and protective applications. Despite their advantages, the integration of these materials remains an emerging research frontier with significant potential for multifunctional material design. This review study provides a comparative analysis of recent progress in microstructure engineering, fabrication techniques, and performance optimization of auxetic materials, while also investigating the synergistic effects of combining SMMs and auxetic materials. It proposes future directions for industrial implementation and offers concrete insights to guide researchers in developing next-generation hybrid SMM-auxetic systems by addressing key challenges. This review research also bridges the gap between fundamental material science and practical applications, highlighting the transformative potential of these materials for advanced multifunctional structures in high-performance industries.</p>

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Programmable metamaterial hybrids: merging shape memory materials and auxetic properties for transformative applications

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • Gülcan Aydın,
  • İdris Candan,
  • Mahpeyker Kocakoç Toprakoğlu,
  • Tarek Yousif Elrasasi,
  • Mohammed Hamouni,
  • Sait Eren San

摘要

Recent advancements in shape memory materials (SMMs) and auxetic materials have created new opportunities for next-generation engineering applications. SMMs, including alloys, polymers, ceramics, and gels, can recover their original shape in response to external forces, enabling adaptive and self-healing systems. Auxetic materials with a negative Poisson’s ratio offer exceptional energy absorption, impact resistance, and mechanical tunability, making them ideal for aerospace, biomedical, and protective applications. Despite their advantages, the integration of these materials remains an emerging research frontier with significant potential for multifunctional material design. This review study provides a comparative analysis of recent progress in microstructure engineering, fabrication techniques, and performance optimization of auxetic materials, while also investigating the synergistic effects of combining SMMs and auxetic materials. It proposes future directions for industrial implementation and offers concrete insights to guide researchers in developing next-generation hybrid SMM-auxetic systems by addressing key challenges. This review research also bridges the gap between fundamental material science and practical applications, highlighting the transformative potential of these materials for advanced multifunctional structures in high-performance industries.