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大学物理实验, 2024, 37(5): 38-43     https://doi.org/10.14139/i.cnki.cn22-228.2024.05.008
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温度敏感型黏性水凝胶电极的制备及心电监测实验
任传天 1,赵冉 3 ,刘浩楠 3,汪成 2,雷鸣 1,黄凯 2*
1.北京邮电大学 集成电路学院,北京 100876;2.北京邮电大学 理学院,北京 100876;3.北京邮电大学 电子工程学院,北京 100876
Preparation of Temperature-Sensitive Viscous HydrogelElectrodes and ECG Monitoring Experiment
REN Chuantian 1 ,ZHAO Ran 3, LU Haonan 3, WANG Cheng 2, LEI Ming 1, HUANG Kai 2*
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摘要 

智能响应水凝胶由于能够感应并响应环境变化,具有很大的应用前景。但目前许多智能水凝胶由于力学性能弱、导电性差等问题,阻碍了许多应用的可能。实验以 N-异丙基丙烯酰胺(NIPAM)和丙烯酰胺(AAM)为单体,纳米银片作为导电填料,合成了具有温度响应性的 Ag-P(NIPAM-co-AAm)-NaCl 水凝胶。该水凝胶具有 700%以上的极限应变、较高的电导率、可调节的低黏附性,能够减少人体正常生理活动下由于运动伪影产生的噪声,并且可以通过改变 N-异丙基丙烯酰胺(NIPAM)和丙烯酰胺(AAM)的占比来调控凝胶的最低临界温(LCST)。实验使用水凝胶组装了电极,该电极在100 Hz 下达到了 20 kΩ 的低接触阻抗,采集到的心电信号信噪比超过 28 dB,并且能够稳定工作长达24 h。这种高性能水凝胶电极为下一代智能生理信号监测和应用场景提供了更多可能性。

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任传天
赵 冉
刘浩楠
汪 成
雷 鸣
黄 凯
关键词:  黏性水凝胶  心电电极  心电监测     
Abstract: 

lnteligent response hydrogels have significant application prospeets due to their ability to sense andrespond to environmental changes. However, many smart hydrogels are limited by weak mechanical propertiesand poor electrical conductivity.In this experiment, a temperature-responsive AgP ( NIPAM-C0-AAm) -NaCnydrogel was synthesized using N-isopropylacrylamide (NIPAM) and acrylamide ( AAm) as monomers, with nano-silver sheets as conductive fillers.'This hydrogel demonstrates an ultimate strain exceeding 700% , higlelectrical conductivity, and tunable low adhesion properties, effectively mitigating noise caused by motionartifacts during normal physiological activities,By adjusting the ratio of N-isopropylaerylamide ( NIPAM)andacrylamide ( AAM) , the hydrogel’s lower critical solution temperature (LCST) can be precisely controlledExperimental results show that electrodes assembled with this hydrogel achieved a low contact impedanee of20 k(2 at 100 Hz, and the signal-to-oise ratio of the recorded electrocardiogram signals exceeded 28 dB,maintaining funetionality for up to 24 hours. This high -performance hydrogel electrode offers greater potential for the next generation of intelligent physiological signal monitoring and application scenarios.

Key words:  viscous hydrogel    ECG electrode    ECG monitoring
                    发布日期:  2024-10-25     
ZTFLH:  TB 381  
引用本文:    
任传天 , 赵 冉 , 刘浩楠 , 汪 成 , 雷 鸣 , 黄 凯 . 温度敏感型黏性水凝胶电极的制备及心电监测实验 [J]. 大学物理实验, 2024, 37(5): 38-43.
REN Chuantian , ZHAO Ran , LU Haonan , WANG Cheng, LEI Ming , HUANG Kai. Preparation of Temperature-Sensitive Viscous HydrogelElectrodes and ECG Monitoring Experiment . Physical Experiment of College, 2024, 37(5): 38-43.
链接本文:  
http://dawushiyan.jlict.edu.cn/CN/10.14139/i.cnki.cn22-228.2024.05.008  或          http://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I5/38
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