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Ultrastretchable Strain Sensors and Arrays with High Sensitivity and Linearity Based on Super Tough Conductive Hydrogels
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-10-01 00:00:00 , DOI: 10.1021/acs.chemmater.8b03999 Zhenwu Wang 1 , Jing Chen 1 , Yang Cong 2 , Hua Zhang 1 , Ting Xu 1 , Lei Nie 1 , Jun Fu 1
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-10-01 00:00:00 , DOI: 10.1021/acs.chemmater.8b03999 Zhenwu Wang 1 , Jing Chen 1 , Yang Cong 2 , Hua Zhang 1 , Ting Xu 1 , Lei Nie 1 , Jun Fu 1
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Biocompatible conductive hydrogels with intrinsic flexibility, high sensitivity, linearity and outstanding reliability are highly demanded for wearable devices or implantable sensors. Here we report novel tough conductive hydrogels composed of interpenetrating polyaniline (PANI) and poly(acrylamide-co-hydroxyethyl methyl acrylate) (P(AAm-co-HEMA)) networks. Intrinsic interactions between the conductive PANI network and the flexible P(AAm-co-HEMA) endowed hydrogels with outstanding strength and toughness to cyclic loadings. The conductive hydrogels show very high sensitivity (gauge factor 11) and outstanding linear dependence of sensitivity on strain. Strain sensors based on the conductive hydrogels demonstrate reliable detection of repeated large strains and subtle vibrations, including the movements of various human joints, pulses and voiceprints. Moreover, a prototype 2D sensor array is fabricated to sense strains or pressures in the two dimensions, which is promising for electronic skin, touchpads, biosensors, human-machine interfaces, biomedical implants, wearable electronic devices and so on.
中文翻译：
基于超强导电水凝胶的高灵敏度和线性度的超拉伸应变传感器和阵列
对于可穿戴设备或植入式传感器，人们强烈要求具有内在柔性，高灵敏度，线性和出色可靠性的生物相容性导电水凝胶。这里，我们报告互穿聚苯胺（PANI）和聚（丙烯酰胺-组成的新颖韧导电水凝胶共羟乙基甲基丙烯酸酯）（P（AAM -共- HEMA））的网络。导电PANI网络与柔性P（AAm- co-HEMA）赋予水凝胶以出色的强度和韧性，可承受循环载荷。导电水凝胶显示出极高的灵敏度（规格因子11），并且灵敏度对应变的线性关系非常突出。基于导电水凝胶的应变传感器可以可靠地检测出重复出现的大应变和细微的振动，包括各种人体关节，脉搏和声纹的运动。而且，制造了原型二维传感器阵列以感测二维上的应变或压力，这有望用于电子皮肤，触摸板，生物传感器，人机界面，生物医学植入物，可穿戴电子设备等。
更新日期：2018-10-01
中文翻译：
基于超强导电水凝胶的高灵敏度和线性度的超拉伸应变传感器和阵列
对于可穿戴设备或植入式传感器，人们强烈要求具有内在柔性，高灵敏度，线性和出色可靠性的生物相容性导电水凝胶。这里，我们报告互穿聚苯胺（PANI）和聚（丙烯酰胺-组成的新颖韧导电水凝胶共羟乙基甲基丙烯酸酯）（P（AAM -共- HEMA））的网络。导电PANI网络与柔性P（AAm- co-HEMA）赋予水凝胶以出色的强度和韧性，可承受循环载荷。导电水凝胶显示出极高的灵敏度（规格因子11），并且灵敏度对应变的线性关系非常突出。基于导电水凝胶的应变传感器可以可靠地检测出重复出现的大应变和细微的振动，包括各种人体关节，脉搏和声纹的运动。而且，制造了原型二维传感器阵列以感测二维上的应变或压力，这有望用于电子皮肤，触摸板，生物传感器，人机界面，生物医学植入物，可穿戴电子设备等。
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