Electronic Skin Based on a Cellulose/Carbon Nanotube Fiber Network for Large-Area 3D Touch and Real-Time 3D Surface Scanning

• DOI: 10.1021/acsami.1c16166
• Publication Date: 2021-10-28T20:55:42Z
• Authors: Daesik Kim; Dong Keon Lee; Jinsu Yoon; Donghyo Hahm; Byeongmoon Lee; Eunho Oh; Geonhee Kim; Jiseok Seo; Hanul Kim; Yongtaek Hong
• Keywords: Electronic Skin; Tactile sensor; Piezoresistive effect

Electronic skin (E-skin) based on tactile sensors has great significance in next-generation electronics such as biomedical application and artificial intelligence that requires interaction with humans. To mimic the properties of human skin, high flexibility, excellent sensing capability, sufficient spatial resolution through high-level sensor integration are required. Here, we report a highly sensitive pressure matrix piezoresistive cellulose/single-walled carbon nanotube-entangled fiber network, which forms its own porous structure enabling superior sensitivity (9.097 kPa-1), fast response speed (<2 ms), orders magnitude detection range limit 1 Pa. Furthermore, remarkable device expandability ease patterning scalability allows easy implementation large-area 2304 (48 × 48) pixels. Combined real-time distribution monitoring system, flexible 3D touch simultaneously displays plane coordinates information scanning detects morphology soft body surface successfully demonstrated.