An efficient preparation method for ionic E-skin based on the electrospun PVDF-HFP/TPU/[EMIM][TFSI] films and its multi-functional applications

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-08-27 DOI:10.1016/j.sna.2025.117014

Yunlong Zhu , Zongcheng Jiang , Xiaofeng Zheng , Xudong Liu , Zhicheng Dong , Jian Li , Chuanjie Hu , Zhenyu Xue , Yangxin Zhou , Xudong Cheng , Peimei Dong

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引用次数: 0

Abstract

The emerging iontronic sensing mechanism offers a multi-mode sensing strategy that can decouple pressure and temperature in a single sensing unit, which is beneficial for the lightweight and multifunctional development of electronic skin (E-skin). However, at present, an effective preparation method for iontronic E-skins is still desired. Especially, the preparation of electrolytes containing ionic liquids has the risk of leakage, and it relies on strict encapsulation. Moreover, the cross-interference of pressure and temperature has a significant impact on the signal decoupling and the sensing sensitivities. In this study, we reported an effective approach for preparing ionic E-skin by integrating PU films with Ag electrodes and iontronic electrospun films. With the concentration of ionic liquids as the variable, the temperature sensing and pressure sensing exhibited different patterns. A detailed study on the cross-interference of pressure and temperature was also be conducted. The obtained E-skin with the optimal ionic concentration of 20 % achieved coordinated temperature and pressure sensing performances, which showed the high pressure sensitivity of 1.67 kPa⁻¹ in the range of 0 – 70 kPa, as well as a typical thermally activated behavior at temperature from 30 °C to 65 °C.

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基于静电纺PVDF-HFP/TPU/[EMIM][TFSI]薄膜的离子电子皮肤高效制备方法及其多功能应用

新兴的离子电子传感机制提供了一种多模式传感策略，可以将压力和温度解耦在一个传感单元中，这有利于电子皮肤的轻量化和多功能发展。然而，目前仍需要一种有效的制备电子电子皮肤的方法。特别是含有离子液体的电解质的制备有泄漏的危险，并且依赖于严格的封装。此外，压力和温度的交叉干扰对信号去耦和传感灵敏度有显著影响。在这项研究中，我们报道了一种将PU膜与Ag电极和离子电子静电纺膜结合在一起制备离子E-skin的有效方法。当离子液体浓度为变量时，温度传感和压力传感表现出不同的模式。对压力和温度的交叉干扰进行了详细的研究。当离子浓度为20% %时，所制备的E-skin具有良好的温度和压力传感性能，在0 ~ 70 kPa范围内具有1.67 kPa−1的高压敏感性，在30 ~ 65℃范围内具有典型的热激活行为。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...