近日，北京航空航天大学刘明杰团队实现了应变耦合结晶聚合物-无机界面助力高效磁电传感。相关论文于2025年8月7日发表在《科学》杂志上。

磁电传感有望用于柔性传感器，以最小的功耗提供对电场和磁场的精确检测。然而，其实际应用受限于磁电效应较弱和整体性能有限，特别是在机械应变下。

研究组通过界面共结晶策略制备了稳健的磁电聚合物-无机纳米复合材料。通过利用二硒化钒（VSe₂）单层上的重氮化学，他们在铁磁性VSe₂和铁电聚偏氟乙烯（PVDF）纳米晶体之间创建了一个亚分子平面界面。这种高度结晶的界面几乎没有可移动聚合物链，从而限制了能量耗散并增强了界面能量传递。

该可扩展复合薄膜具有优异的磁电性能，磁电容系数为23.6%。这些薄膜实现了超快磁电检测，与传统传感器相比，速度提高了近10倍，有望实现多功能材料（如热电制冷器）集成到可穿戴设备。

附：英文原文

Title: Strain-coupled, crystalline polymer-inorganic interfaces for efficient magnetoelectric sensing

Author: Binbin He, Yuanyuan He, Wenhui Wang, Yingzhi Sun, Shengwen Kong, Jin Huang, Yunfei Ru, Bingchao Qin, Huili Ren, Jing He, Tianyi Zhao, Jing Li, Jiong Lu, Li-Dong Zhao, Mingjie Liu

Issue&Volume: 2025-08-07

Abstract: Magnetoelectric sensing holds promise for flexible sensors, offering precise detection of both electric and magnetic fields with minimal power consumption. However, its practical use has been constrained by weak magnetoelectric effects and limited overall performance, particularly under mechanical strain. Herein, we fabricated robust magnetoelectric polymer-inorganic nanocomposites through an interfacial cocrystallization strategy. By leveraging diazonium chemistry on vanadium diselenide (VSe2) monolayers, we created a submolecular-flat interface between ferromagnetic VSe2 and ferroelectric poly(vinylidene fluoride) (PVDF) nanocrystals. This highly crystalline interface has few mobile polymer chains and thus limits energy dissipation and enhances interfacial energy transfer. The scalable composite films show exceptional magnetoelectric performance, with a magnetocapacitive coefficient of 23.6%. These films enable ultrafast magnetoelectric detection, approaching a 10-fold increase in speed compared with conventional sensors, and offer opportunities for integrating multifunctional materials such as thermoelectric coolers into wearable devices.

DOI: adt2741

Source: https://www.science.org/doi/10.1126/science.adt2741