Hu Yongqin, Hou Chen, Shi Yuxia, Wu Jiamei, Yang Da, Huang Zhuili, Wang Yan, Liu Yufei
Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China.
Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, People's Republic of China.
Nanotechnology. 2022 Jan 24;33(16). doi: 10.1088/1361-6528/ac4878.
Electromagnetic pollution seriously affects the human reproductive system, cardiovascular system, people's visual system, and so on. A novel versatile stretchable and biocompatible electromagnetic interference (EMI) shielding film has been developed, which could effectively attenuate electromagnetic radiation. The EMI shielding film was fabricated with a convenient solution casting and steam annealing with 2D MXene, iron oxide nanoparticles, and soluble polyurethane. The EMI shielding effectiveness is about 30.63 dB at 8.2 GHz, based on its discretized interfacial scattering and high energy conversion efficiency. Meanwhile, the excellent tensile elongation is 30.5%, because of the sliding migration and gradient structure of the nanomaterials doped in a polymer matrix. In addition, the film also demonstrated wonderful biocompatibility and did not cause erythema and discomfort even after being attached to the arm skin over 12 h, which shows the great potential for attenuation of electromagnetic irradiation and protection of human health.
电磁污染严重影响人类生殖系统、心血管系统、视觉系统等。一种新型的多功能可拉伸且生物相容的电磁干扰（EMI）屏蔽膜已被开发出来，它能有效衰减电磁辐射。该EMI屏蔽膜是通过简便的溶液浇铸和蒸汽退火工艺，使用二维MXene、氧化铁纳米颗粒和可溶性聚氨酯制备而成。基于其离散的界面散射和高能量转换效率，在8.2 GHz时其电磁干扰屏蔽效能约为30.63 dB。同时，由于掺杂在聚合物基体中的纳米材料的滑动迁移和梯度结构，其优异的拉伸伸长率为30.5%。此外，该膜还表现出出色的生物相容性，即使贴在手臂皮肤上超过12小时也不会引起红斑和不适，这显示出其在衰减电磁辐射和保护人类健康方面的巨大潜力。
