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Flexible high-entropy functional ceramics
Lvye Dou1,2, Bingbing Yang1,3, Xiaoyuan Ye4
1State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, China.
Nature Communications
|July 2, 2025
Summary
Researchers developed flexible functional ceramics using a high-entropy strategy. This novel crystalline/amorphous microstructure balances performance and flexibility for advanced electronic devices.
Area of Science:
- Materials Science
- Ceramic Engineering
- Nanotechnology
Background:
- Functional ceramics offer unique electronic properties but are typically brittle.
- Integrating flexibility into ceramics is challenging due to the trade-off between performance and mechanical properties.
- Existing methods struggle to combine ceramic functionality with mechanical flexibility.
Purpose of the Study:
- To develop a flexible functional ceramic material that overcomes the inherent brittleness of ceramics.
- To achieve a balance between high performance and mechanical flexibility in ceramic-based electronic devices.
- To explore a novel high-entropy strategy for creating advanced ceramic microstructures.
Main Methods:
- Utilized a high-entropy strategy to control ceramic microstructure.
- Achieved initial nanocrystal formation followed by controlled amorphization.
- Fabricated a bismuth titanate (Bi4Ti3O12)-based film with a crystalline/amorphous structure.
Main Results:
- Developed a flexible Bi4Ti3O12-based ceramic film capable of withstanding ~180° folding.
- Achieved significant bending strain (4.80%) and tensile elongation (5.29%).
- The resulting flexible dielectric capacitor exhibited high permittivity (~35), good temperature stability, and durability.
Conclusions:
- A high-entropy strategy successfully created a flexible ceramic with a unique crystalline/amorphous microstructure.
- This approach balances ceramic functionality with mechanical flexibility, enabling new applications.
- The findings pave the way for next-generation flexible functional ceramics for advanced electronics.
