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FlexMat文章精选: 南京邮电大学李巍教授团队 | 铁驻极体纳米发电机(FENG)引领智能医疗新变革

  • 2026-03-30 10:12:34
FlexMat文章精选: 南京邮电大学李巍教授团队 | 铁驻极体纳米发电机(FENG)引领智能医疗新变革

Exploring the application of ferroelectret nanogenerators in medical engineering

Xianfa Cai, Xiaowen Han, Jiaqi Xie*, Yunqi Cao, Wei Li*

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文章简介
可穿戴与植入式医疗设备的供电瓶颈如何突破?铁驻极体纳米发电机(FENG)以其自供电、高灵敏度、卓越柔性和优异生物相容性成为破局利器。南京邮电大学李巍团队最新综述系统解析了FENG的工作原理与制备技术,并重点展示了其在血液循环、呼吸、肌肉活动及神经反射四大核心生理系统监测与治疗中的前沿应用,同时直面挑战、展望未来,为下一代无源智能医疗设备发展指明方向。该综述文章以“Exploring the Application of Ferroelectret Nanogenerators in Medical Engineering”发表在南京邮电大学柔性电子全国重点实验室与Wiley出版集团联合新创办的国际学术期刊FlexMat上。该论文的第一作者为南京邮电大学蔡先法,通讯作者为南京邮电大学谢佳琪、李巍。

铁驻极体纳米发电机(FENG)由具有人造微孔结构通过特殊极化处理在微孔内壁形成方向排列的电偶极子,从而拥有高压电系数(d33可达数千pC/N)、超低杨氏模量(极柔软)、低密度、易大面积制备及低成本等独特优势。这使得FENG在压力或拉伸下(压电效应)能高效产生电信号,反之施加电压也可致其形变(逆压电效应),成为生物医学应用的理想平台。

制备:构筑能量转换核心

FENG的制备旨在形成稳定电荷分布的微孔结构。常用材料包括聚丙烯(PP)、氟化乙烯丙烯(FEP)、Ecoflex弹性体及膨体聚四氟乙烯(ePTFE)等。多孔结构制备方法包括高压气体注入法、无水乙醇混合加热加热法、3D打印网格复合结构法、溶剂交换法(适用于离子凝胶复合)等。尤其关键的是植入应用的生物相容性封装(如聚酰亚胺PI膜),可有效隔离体液,降低免疫风险。

1 FENG的制备方法。(a) 包含四个传感器单元(A1 ~ A4)设备的原理图 (b) 3d打印TPU网格和FEP层组成的夹层结构。(c) 高可拉伸FENG制造工艺示意图 (d) 高压注气结合无机小颗粒制备FENG的典型方法。

医学应用:精准感知,赋能健康

1. 在血液循环系统,柔性压电超声能量收集(PUEH)阵列可利用超声波无线供电给植入设备(如起搏器、神经刺激器),即便在组织深处仍保持高效;而自供电FENG脉搏传感器则能高精度捕捉桡动脉搏动,用于实时心率监测及中医脉象现代化分析,甚至集成于智能坐垫实现无感监测。

2 FENG在血液循环中的应用。(a) PUEH结构示意图。(b) 办公室久坐人群健康管理平台示意图。(c) 脉象监测实验装置示意图。(d) 脉冲传感监测系统概念。

2. 针对呼吸系统,置于床下的非接触式FENG传感条可无扰监测睡眠呼吸模式、心率和变异性,性能媲美商用设备;集成超薄FENG传感器(仅5.5µm厚)的智能口罩更能无线识别呼吸状态(正常、急促、咳嗽、屏气),为呼吸管理提供新工具。

3 FENG在呼吸系统中的应用。(a) 睡眠监测传感器的结构示意图。(b) 非接触式睡眠监测系统的示意图。(c) 睡眠监测传感器与商用压力传感器之间压力响应曲线的比较。(d) FENG远程监控传感器。(e) 睡眠监测传感器的位置描述。(f) 配备超薄FENG的智能口罩。(g) Au-Au键固定的两层Au/聚对二甲苯/聚四氟乙烯AF膜构成。(h) FENG在呼吸系统中表现出良好的输出稳定性。

3. 在肌肉运动领域,基于LIG和多孔Ecoflex制备的 FENG可制成智能肌贴,实时捕捉肌肉关节信号,助力运动矫正与评估;同时,集成于手套的柔性传感器能精准识别手势动作,结合AI算法分类准确率超96%。更令人瞩目的是传感-致动一体化设计,部分FENG器件可同时感知运动并产生触觉反馈,为人机交互开辟新径。

4 FENG在肌肉运动中的应用。(a) 篮球运动员使用FENG来收集运动信号。(b) 展示了柔性FENG薄膜。(c) 显示了推荐的传感器放置位置。(d) 可穿戴纺织品衬底上基于pp的触觉传感器。(e) 压电极体致动器/传感器结构示意图。(f) 基于FENG传感器的可穿戴设备。

4. 面向神经反射调控,柔性压电薄膜可植入脑部,其弯曲产生的电能直接刺激运动皮层成功诱发动物肢体动作;高效超声能量收集器(H-UEH)则能经皮供电刺激外周神经(如迷走神经、坐骨神经),展现出神经修复潜力;此外,FENG还被用于研究脑部力学响应,深化对脑损伤机制的理解。

5 FENG在神经反射中的应用。(a) 柔性神经信号收集装置。(b) 柔性神经信号收集装置的理论模型。(c)(d) 动物实验演示(e) H-UEH作为植入式生物电子学用于能量供应和神经修复的示意图。(f) 超声驱动H-UEH刺激周围神经的示意图。(g) 显示孔洞和银电极的FENG横截面。(h) 放置在脑中的FENG(i) FENG输出电荷放大电路。

挑战与未来:迈向临床之路

尽管前景广阔,FENG迈向实际应用仍面临核心挑战:生物相容性与长期稳定性(需抵御体液侵蚀、免疫排斥及环境干扰)、输出一致性与可靠性(复杂生理环境中的信号稳定性)、系统集成与智能化(融合微处理与无线通信)、以及商业化进程加速(工艺成熟与成本控制)。

未来突破点在于:开发更高性能、更稳定的新材料;通过表面改性优化生物界面;实现多模态(电//光等)传感集成;构建高效能量收集-存储-管理回路;并大力拓展在慢性病管理、康复辅助及神经疾病治疗等场景的临床应用。

总结

FENG凭借其独特的自供电本质、超凡的柔韧性和生物适配性,正重塑医学工程的边界——从无感监测生命体征到为植入设备无线赋能,再到精准调控神经活动。随着材料、微纳加工与生物医学的深度交叉融合,持续突破挑战的FENG技术,必将为可穿戴健康监护、植入式诊疗设备及远程医疗注入强大动能,开启智能、普惠、无扰的新医疗时代。

How to cite this article: X. Cai, X. Han, J. Xie, Y. Cao, W. Li, FlexMat2025, 2, 204. https://doi.org/10.1002/flm2.44

期刊介绍

FlexMat是由南京邮电大学柔性电子全国重点实验室Wiley出版集团联合新创办的开放获取国际学术期刊,于2024式出版发行。FlexMat创刊主编由中国科学院院士、俄罗斯科学院外籍院士、美国国家工程院外籍院士黄维院士担任;共同主编由新加坡材料研究院罗贤俊教授和南京邮电大学汪联辉教授担任;执行主编由南京邮电大学赖文勇教授担任;编委团队由来自世界各地的杰出专家学者组成。FlexMat主要刊载先进材料和柔性电子领域的最新材料科学研究进展,聚焦柔性电子功能材料,涉及材料、化学、生物、物理、光学工程、电子信息、生命科学和先进能源等学科交叉领域材料研究和应用最前沿,涵盖柔性电子、有机电子、塑料电子、印刷电子、生物电子、智能电子、能源电子、健康电子等方向的新材料、新概念和新应用。

期刊邮箱:flexmat@njupt.edu.cn

期刊官网:https://onlinelibrary.wiley.com/journal/28369106

投稿系统:https://authors.wiley.com/dashboard/journal?groupCode=FLM2

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  1. CONNECT:[ UseTime:0.000536s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000740s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000345s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000273s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000554s ]
  6. SELECT * FROM `set` [ RunTime:0.000192s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000987s ]
  8. SELECT * FROM `article` WHERE `id` = 507312 LIMIT 1 [ RunTime:0.000488s ]
  9. UPDATE `article` SET `lasttime` = 1774848368 WHERE `id` = 507312 [ RunTime:0.000855s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000224s ]
  11. SELECT * FROM `article` WHERE `id` < 507312 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000399s ]
  12. SELECT * FROM `article` WHERE `id` > 507312 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004084s ]
  13. SELECT * FROM `article` WHERE `id` < 507312 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005258s ]
  14. SELECT * FROM `article` WHERE `id` < 507312 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000715s ]
  15. SELECT * FROM `article` WHERE `id` < 507312 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003255s ]
0.088903s