Electrospinning Machine | Entropy-Assisted Flexible Nanofibrous Dielectrics Enable High- performance Strain Sensing

Challenge: Ceramics possess remarkable properties, including high-temperature stability, strong chemical resistance, and excellent wear resistance, making them highly promising for various applications. However, the brittleness of ceramics poses a significant obstacle to fully realizing their application potential in wearable devices and unrestricted load environments. 

Method: Professor Yuanhua Lin from Tsinghua University and others proposed an entropy-assisted strategy to achieve flexibility in Bi4Ti3O12-based dielectric nanofibers. 

Innovation 1: The enhancement of atomic configuration entropy in the nanofibers stimulated favorable structural changes, including refined grains and the development of a substantial amorphous component, significantly improving the flexibility and functional performance of the ceramic nanofibers. 

Innovation 2: The flexible high-entropy nanofibers enabled the development of a high-performance capacitive strain sensor with exceptional response sensitivity (1.62 kPa−1), broad temperature range adaptability from 25-350°C, and excellent fatigue resistance over 3000 cycles. 

Innovation 3: Importantly, this entropy-driven approach is expected to advance the development of flexible functional ceramics, moving beyond simple oxides like amorphous silica and alumina. 

https://doi.org/10.1002/adfm.202507617