Engineered control of polarisation rotation in ferroelectric bilayers

本项目旨在开发具有适合集成功能特性的界面工程纳米铁电薄膜。大块铁电体构成了传感器、执行器和超声波装置等传统单机机电设备的核心。未来的应用需要集成到半导体晶圆上的薄膜形式，但与晶圆的附着会产生机械约束，这极大地抑制了机电响应。这个项目旨在通过“极化旋转”来解决这个问题，通过薄膜铁电体的分层堆叠来实现。铁电极化旋转的工程化控制可能是实现现代机电设备的途径。

This project aims to develop interface engineered nanoscale ferroelectric thin films with functional properties suitable for integration. Bulk ferroelectrics form the core of traditional stand-alone electromechanical devices such as sensors, actuators and ultrasonic devices. Future applications need to be integrated into thin film form on semiconductor wafers, but the attachment to the wafer induces a mechanical constraint, which dramatically suppresses the electromechanical response. This project aims to solve this problem by "polarisation rotation", achieved by layered stacking of thin film ferroelectrics. Engineered control of ferroelectric polarization rotation could be the pathway to modern electromechanical devices.