材料科学
辅助
可伸缩电子设备
弹性体
多孔性
复合材料
石墨烯
电磁屏蔽
制作
多孔介质
泊松比
超材料
纳米复合材料
数码产品
纳米技术
光电子学
泊松分布
医学
化学
替代医学
统计
数学
物理化学
病理
作者
X. Zhang,Qi Sun,Xing Liang,Puzhong Gu,Zhenyu Hu,Y. Xiao,M. Liu,Zejun Sun,Jia Huang,Guangming Wu,Guoqing Zu
标识
DOI:10.1038/s41467-024-44707-3
摘要
Highly stretchable porous materials are promising for flexible electronics but their fabrication is a great challenge. Herein, several kinds of highly stretchable conductive porous elastomers with low or negative Poisson's ratios are achieved by uniaxial, biaxial, and triaxial hot-pressing strategies. The reduced graphene oxide/polymer nanocomposite elastomers with folded porous structures obtained by uniaxial hot pressing exhibit high stretchability up to 1200% strain. Furthermore, the meta-elastomers with reentrant porous structures combining high biaxial (or triaxial) stretchability and negative Poisson's ratios are achieved by biaxial (or triaxial) hot pressing. The resulting elastomer-based wearable strain sensors exhibit an ultrawide response range (0-1200%). The materials can be applied for smart thermal management and electromagnetic interference shielding, which are achieved by regulating the porous microstructures via stretching. This work provides a versatile strategy to highly stretchable and negative-Poisson-ratio porous materials with promising features for various applications such as flexible electronics, thermal management, electromagnetic shielding, and energy storage.
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