Research Progress on Metamaterial Structures with Negative Poisson's Ratio Based on Additive Manufacturing

Introduction: The design and topology optimization of cytosolic, 2D, and 3D negative Poisson's ratio structures are introduced, and directional regulation from microstructure to macroscopic properties is achieved through additive manufacturing technology. Different material properties are compared and analyzed for their potential application in various engineering fields. Methods: Journals and patents about negative Poisson's ratio structures are cited and organized. The theoretical understanding and practical application of negative Poisson's ratio structures are deepened through the synergy between topological configuration design and additive manufacturing processes. Results: Negative Poisson's ratio metamaterials based on additive manufacturing have excellent properties such as noise reduction, vibration damping, and energy absorption. They are widely used in medical implants, aerospace, and flexible sensing. Discussion: Challenges remain in the high-precision additive manufacturing of complex topologies, the accuracy of performance prediction models under different material systems, and the assessment of performance stability under fatigue. Conclusion: With the integration of high-performance material design and intelligent manufacturing technology, the application of negative Poisson's ratio metamaterials in high-end equipment and biomedical fields has been further expanded.