Flexible intelligent fabric composed of pinecone-like microstructure Co-cMOFs/CoZnAl-LDH composite nanomaterial for various types of sensor signals to guide personalized health activities

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2024-11, Vol.499, p.155977, Article 155977
• Main Authors: Zhang, Aijia, Lin, Haijiao, Yuan, Tian, Zhu, Qiancheng, Li, Ling, Zhao, Youwei, Zhang, Wenming
• Format: Article
• Language: English
• Subjects: Coupled Co-cMOFs/CoZnAl-LDH; Human motion and health monitoring; Light intensity feedback system; Pinecone-like structure; Various types of sensor signals detection
• ISSN: 1385-8947
• DOI: 10.1016/j.cej.2024.155977

[Display omitted] •The synergistic reinforcement strategy was used to prepare a nanocomposite (Co-cMOFs/CoZnAl-LDH) with multifunctionality.•Inspired by the natural pinecone structure, the sensor exhibits high electromechanical performance.•The sensor with signal recognition function of various types of sensors is developed.•Fully develop the coupling effect of Co-cMOFs and CoZnAl-LDH, and construct a light intensity feedback system. Multifunctional interfacing is a key aspect of flexible sensor development that facilitates enhanced interaction with the natural environment. However, challenges faced by contemporary multifunctional flexible sensors are structural complexity and high cost. Herein, inspired by the specific structure of pinecone in nature and the microstructured neural networks randomly distributed within human skin, we fabricated Co-cMOFs/CoZnAl-LDH composite nanomaterials with pinecone-like microstructure. Through the mutual verification of finite element simulation and experimental data, the mechanism of high sensitivity of the sensor is dynamically revealed from the structural point of view. The prepared pressure sensors exhibit a detection range (0–120 kPa), high sensitivity (2.35 × 109 kPa−1) and fast response. The photoelectric sensor shows enhanced photoelectric energy conversion, which shows great potential in the detection of sunlight intensity (20–100 mW cm−2). Simultaneously, building a hybrid pressure, acoustic and optical sensing platform and validating its superior performance in human movement and health monitoring applications. Furthermore, a strategy of light intensity feedback system to guide personalized health activities is put forward, so that doctors can guide patients/elderly health activities remotely.