On-skin devices are highly sought after for physiological information detection, individual protection, and bioenergy conversion with minimal sensory interference. This paper introduces versatile electrospun micropyramid arrays (EMPAs) combined with ultrathin, ultralight, gas-permeable structures, developed through self-assembly technology. The designable self-assembly allows structural and material optimization of EMPAs for various applications, including daytime radiative cooling, pressure sensing, and bioenergy harvesting. Results demonstrate a -4°C temperature drop using an EMPA-based radiative cooling fabric, high sensitivity pressure sensing, and reliable biomechanical energy harvesting. The flexible self-assembly of EMPAs shows significant potential for healthcare and human-machine interaction.

Jia-Han Zhang, Zhengtong Li, Juan Xu, Jiean Li, Ke Yan, Wen Cheng, Ming Xin, Tangsong Zhu, Jinhua Du, Sixuan Chen, Xiaoming An, Zhou Zhou, Luyao Cheng, Shu Ying, Jing Zhang, Xingxun Gao, Qiuhong Zhang, Xudong Jia, Yi Shi, Lijia Pan