Developing films with excellent conformability and adhesion has become a research hotspot in many fields, such as medical bandages. The conventional method for enhancing films conformability and adhesion is to make the films thinner or modify the material of the films, which usually compromises the function of the films. In this paper, a novel metamaterial film was proposed to cover the skin area of a human elbow during the rotation of elbow. This structure is composed of unit cells with rectangular perforations, whose Poisson's ratio (PR) is determined by the length of the perforation. With finite element analysis (FEA), relations among the stretch strain, Poisson's ratio and length of the perforation of unit cell was obtained. Then, the proposed film was generated by mapping unit cells with different PR to the target skin surface. With the same deformation behavior as the elbow skin, conformability and adhesion of the generated film can be guaranteed during the entire rotation process of the elbow, which has been verified by both FEA and experimental tests. Theoretically, by changing the arrangement of different PR unit cells, the proposed method can be applied to design films for other complex surface on human body. It also provides a new way to introduce materials with better biocompatibility but poor mechanical properties as bandage substrates. As a possible application, a prototype of smart bandage was developed by installing a high-resolution temperature sensor on the proposed film, which can monitor the inflammation of the wounded skin in real time.

开发具有优异顺应性和粘附性的薄膜已成为许多领域的研究热点，例如医用绷带。提高薄膜顺应性和附着力的常规方法是使薄膜更薄或改变薄膜的材料，这通常会损害薄膜的功能。在本文中，提出了一种新型超材料薄膜，用于在肘部旋转过程中覆盖人体肘部的皮肤区域。这种结构由具有矩形穿孔的晶胞组成，其泊松比 (PR) 由穿孔的长度决定。通过有限元分析(FEA)，得到了拉伸应变、泊松比和晶胞穿孔长度之间的关系。然后，通过将具有不同 PR 的单位单元映射到目标皮肤表面来生成建议的薄膜。与肘部皮肤相同的变形行为，在肘部的整个旋转过程中可以保证生成的薄膜的顺应性和粘附性，这已通过有限元分析和实验测试验证。理论上，通过改变不同PR单元的排列，所提出的方法可以应用于设计人体其他复杂表面的薄膜。它还提供了一种引入具有更好生物相容性但机械性能较差的材料作为绷带基材的新方法。作为一种可能的应用，智能绷带的原型是通过在提议的薄膜上安装高分辨率温度传感器来开发的，该传感器可以实时监测受伤皮肤的炎症。在弯头的整个旋转过程中可以保证生成的薄膜的顺应性和粘附性，这已经通过有限元分析和实验测试验证。理论上，通过改变不同PR单元的排列，所提出的方法可以应用于设计人体其他复杂表面的薄膜。它还提供了一种引入具有更好生物相容性但机械性能较差的材料作为绷带基材的新方法。作为一种可能的应用，通过在提议的薄膜上安装高分辨率温度传感器开发了智能绷带的原型，该传感器可以实时监测受伤皮肤的炎症。在弯头的整个旋转过程中可以保证生成的薄膜的顺应性和粘附性，这已经通过有限元分析和实验测试验证。理论上，通过改变不同PR单元的排列，所提出的方法可以应用于设计人体其他复杂表面的薄膜。它还提供了一种引入具有更好生物相容性但机械性能较差的材料作为绷带基材的新方法。作为一种可能的应用，通过在提议的薄膜上安装高分辨率温度传感器开发了智能绷带的原型，该传感器可以实时监测受伤皮肤的炎症。该方法可用于设计人体其他复杂表面的薄膜。它还提供了一种引入具有更好生物相容性但机械性能较差的材料作为绷带基材的新方法。作为一种可能的应用，通过在提议的薄膜上安装高分辨率温度传感器开发了智能绷带的原型，该传感器可以实时监测受伤皮肤的炎症。该方法可用于设计人体其他复杂表面的薄膜。它还提供了一种引入具有更好生物相容性但机械性能较差的材料作为绷带基材的新方法。作为一种可能的应用，智能绷带的原型是通过在提议的薄膜上安装高分辨率温度传感器来开发的，该传感器可以实时监测受伤皮肤的炎症。