Flexible Ferroelectric Vortex Tube Arrays

Freestanding and substrate-free

Substrate-free pure polar vortex tube arrays that are flexible and robust, directly integrable into Fe-FET memory devices with stable performance under extreme conditions.

Jing-Jing, Wang · Shuai, Yin · Liu, Zhen · Xiao-Long, Li · Wang, Jia · Tang, Long · Hong, Zijian · Ma, Xiuliang

Advanced Materials 2026

Specifications

Bending angle

{'zh': '90', 'en': '90'} °

Memory retention time

{'zh': '3600', 'en': '3600'} s

Endurance

{'zh': '10^4', 'en': '10^4'} cycles

Operating voltage range

{'zh': '-60 to 60', 'en': '-60 to 60'} V

Maximum operating temperature

{'zh': '450', 'en': '450'} K

Advantages

Substrate constraint lifted

Removing sacrificial layers yields freestanding films that can be directly integrated into memory devices without lattice matching to a substrate.

Bendable and robust

The flexible vortex tube arrays can bend at 90° without breaking, suitable for flexible electronics and wearable devices.

Stable at high temperature

The device shows a wide and stable hysteresis loop from room temperature to 450 K, indicating reliable operation at elevated temperatures.

Applications

• Ferroelectric memory：Utilizes stable polarization of vortex tube arrays for data storage with high retention and endurance.
• Flexible electronics：Allows device fabrication on flexible substrates for bendable electronic systems.
• Spintronics：Polar topologies offer potential spin-orbit coupling for spintronic device development.
• Wearable memory：Flexible and high-temperature-tolerant memory devices can be integrated into wearables.