Review: Auxetic Polymer-Based Mechanical Metamaterials for Biomedical Applications

Area of Science:

• Materials Science
• Biomedical Engineering
• Mechanical Engineering

Background:

• Auxetic metamaterials, particularly polymer-based ones, have gained attention for their unique mechanical properties, including a negative Poisson's ratio.
• These properties lead to enhanced static modulus, energy adsorption, and shear resistance compared to conventional polymers.
• Additive manufacturing techniques facilitate the design and fabrication of complex auxetic architectures.

Purpose of the Study:

• To review recent advancements in polymer-based auxetic mechanical metamaterials.
• To highlight the potential of these materials in biomedical applications.
• To encourage further research into their unusual mechanical properties for high-performance medical uses.

Main Methods:

• Focus on additive manufacturing techniques for fabricating polymer auxetic metamaterials.
• Review of existing literature on polymer auxetic metamaterials and their properties.
• Analysis of biomedical applications, including tissue engineering, stents, and sensors.

Main Results:

• Polymer auxetic metamaterials demonstrate superior mechanical characteristics compared to bulk polymers.
• Additive manufacturing allows for precise control over the architecture of these metamaterials.
• Significant potential exists for applications in tissue engineering, medical devices (stents, sensors), and beyond.

Conclusions:

• Polymer auxetic metamaterials offer promising avenues for advanced biomedical applications.
• Further investigation is warranted to fully exploit their unique mechanical properties.
• Additive manufacturing is a key enabler for realizing the potential of these materials in medicine.