Fast-speed, Highly Sensitive, Flexible Humidity Sensors Based on a Printable Composite of Carbon Nanotubes and Hydrophilic Polymers

• DOI: 10.1021/acs.langmuir.2c02827
• Publication Date: 2023-01-15T16:18:25Z
• Authors: Su Ding; Tong Yin; Shucheng Zhang; Dingyi Yang; Houlin Zhou; Shouchen Guo; Qikun Li; Yong Wang; Yang Yang; Biaolin Peng; Rusen Yang; Zhi Jiang
• Keywords: :Materials [Engineering]; High Conductivity; 02 engineering and technology; 0210 nano-technology; Flexible Polymers

Carbon nanotubes (CNTs) are a promising material for humidity sensors and wearable electronics due to their solution capability, good flexibility, high conductivity. However, the performance of CNT-based is limited by low sensitivity slow response. Herein CNTs hydrophilic polymers were mixed form composite. The hydrophilicity network structure empowered with response 171% fast response/recovery time 23 s/10 s. Owing sticky flexible polymers, showed strong adhesion PET substrate exhibited outstanding bending durability. Furthermore, sensor was applied monitor human breathing detect finger movements handshaking.