Sang Shengbo, Pei Zhen, Zhang Fan, Ji Chao, Li Qiang, Ji Jianlong, Yang Kun, Zhang Qiang
Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China.
Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
ACS Appl Mater Interfaces. 2022 Jul 13;14(27):31493-31501. doi: 10.1021/acsami.2c09311. Epub 2022 Jun 29.
People with neurological deficits face difficulties perceiving their surroundings, resulting in an urgent need for wearable electronic skin (e-skin) that can monitor external stimuli and temperature changes. However, the monolithic structure of e-skin is not conducive to breathability and hinders hair growth, limiting its wearing comfort. In this work, we prepared fully three-dimensional (3D) printed e-skin that allowed hair penetration and growth. This e-skin also achieved simultaneous pressure and temperature detection and a high tactile resolution of 100 cm, which is close to that of human fingertips. The temperature sensor maintained linear measurements within 10-60 °C. The pore microstructure prepared by a sacrificial template method helped the pressure-sensing unit achieve a high sensitivity of 0.213 kPa. Considering the distribution of human hair, the design of the main structure of the e-skin was studied to realize hair penetration and growth. High-performance pressure-sensitive inks and transparent flexible substrate inks for 3D printing were developed, and e-skins combining these functions were realized through multimaterial in situ 3D printing with high accuracy and high consistency. The temperature and pressure sensors separately performed simultaneous detection without interference, and the tactile sensor array accurately identified stimuli at different locations.
患有神经功能缺损的人在感知周围环境方面面临困难，因此迫切需要能够监测外部刺激和温度变化的可穿戴电子皮肤（e-skin）。然而，电子皮肤的整体结构不利于透气性，阻碍头发生长，限制了其佩戴舒适度。在这项工作中，我们制备了完全三维（3D）打印的电子皮肤，允许毛发穿透和生长。这种电子皮肤还实现了压力和温度的同时检测以及100厘米的高触觉分辨率，这与人类指尖的分辨率相近。温度传感器在10-60°C范围内保持线性测量。通过牺牲模板法制备的孔隙微观结构帮助压力传感单元实现了0.213 kPa的高灵敏度。考虑到人类毛发的分布，研究了电子皮肤主要结构的设计以实现毛发穿透和生长。开发了用于3D打印的高性能压敏油墨和透明柔性基板油墨，并通过高精度和高一致性的多材料原位3D打印实现了具有这些功能的电子皮肤。温度和压力传感器分别进行同时检测且互不干扰，触觉传感器阵列能够准确识别不同位置的刺激。
