材料科学
电磁屏蔽
电磁干扰
电磁干扰
光电子学
无线
复合材料
可穿戴计算机
涂层
导电体
电气工程
电信
计算机科学
工程类
嵌入式系统
作者
Li Yang,Xi Tian,Si‐Ping Gao,Lin Jing,Kerui Li,Haitao Yang,Fanfan Fu,Jim Yang Lee,Yong‐Xin Guo,John S. Ho,Po‐Yen Chen
标识
DOI:10.1002/adfm.201907451
摘要
Abstract In the emerging Internet of Things, stretchable antennas can facilitate wireless communication between wearable and mobile electronic devices around the body. The proliferation of wireless devices transmitting near the human body also raises interference and safety concerns that demand stretchable materials capable of shielding electromagnetic interference (EMI). Here, an ultrastretchable conductor is fabricated by depositing a crumple‐textured coating composed of 2D Ti 3 C 2 T x nanosheets (MXene) and single‐walled carbon nanotubes (SWNTs) onto latex, which can be fashioned into high‐performance wearable antennas and EMI shields. The resulting MXene‐SWNT (S‐MXene)/latex devices are able to sustain up to an 800% areal strain and exhibit strain‐insensitive resistance profiles during a 500‐cycle fatigue test. A single layer of stretchable S‐MXene conductors demonstrate a strain‐invariant EMI shielding performance of ≈30 dB up to 800% areal strain, and the shielding performance is further improved to ≈47 and ≈52 dB by stacking 5 and 10 layers of S‐MXene conductors, respectively. Additionally, a stretchable S‐MXene dipole antenna is fabricated, which can be uniaxially stretched to 150% with unaffected reflected power <0.1%. By integrating S‐MXene EMI shields with stretchable S‐MXene antennas, a wearable wireless system is finally demonstrated that provides mechanically stable wireless transmission while attenuating EM absorption by the human body.
科研通智能强力驱动
Strongly Powered by AbleSci AI