Xie Zhenghui, Meng Feiran, Yang Junlong, Wang Yuhong, Park Chul B, Gong Pengjian, Li Guangxian
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 24 Yihuan Road, Nanyiduan, Chengdu, Sichuan, 610065, People's Republic of China.
Jiangsu JITRI Advanced Polymer Materials Research Institute, Tengfei Building, 88 Jiangmiao Road, Jiangbei New District, Nanjing, Jiangsu, 211800, People's Republic of China.
Nanoscale. 2024 Nov 7;16(43):20288-20303. doi: 10.1039/d4nr02541e.
The swing process between the construction and destruction of hybrid nanostructures in conductive nanocomposites under an external stimulation plays a pivotal role in their sensing performance and is directly related to the nanoscale motion of the corresponding hybrid nanoparticles. When one-dimensional (1D) nanofibers and two-dimensional (2D) nanoplatelets were selectively distributed in thin cell walls supercritical CO foaming, the confined nanoscale motion of 1D nanofibers and 2D nanoplatelets in the stretching process, including hybrid nanoparticle rotation and separation, was precisely regulated based on the hybrid nanoparticles' Monte Carlo theoretical modelling. Correspondingly, an optimized complex hybrid nanostructure with a suitable nanoparticle content, hybrid ratio and geometry was proposed to achieve a high gauge factor of 4469. The flexible nanocomposite sensor with a designated hybrid nanostructure that shows high sensing performance was then tested for different signals, and it shows great potential in the application of monitoring human body motions.
在外部刺激下，导电纳米复合材料中混合纳米结构的构建与破坏之间的转换过程对其传感性能起着关键作用，且与相应混合纳米颗粒的纳米级运动直接相关。当通过超临界CO₂发泡使一维（1D）纳米纤维和二维（2D）纳米片选择性地分布在薄细胞壁中时，基于混合纳米颗粒的蒙特卡洛理论模型，精确调控了拉伸过程中1D纳米纤维和2D纳米片在受限条件下的纳米级运动，包括混合纳米颗粒的旋转和分离。相应地，提出了一种具有合适纳米颗粒含量、混合比例和几何形状的优化复合混合纳米结构，以实现4469的高应变计因子。然后对具有指定混合纳米结构且显示出高传感性能的柔性纳米复合传感器进行了不同信号测试，结果表明其在监测人体运动应用中具有巨大潜力。
