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Electronic skin based on cellulose/KCl/sorbitol organohydrogel
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2022-05-21 , DOI: 10.1016/j.carbpol.2022.119645
Minzhang Chen 1 , Xinyi Qian 1 , Jie Cai 1 , Jinping Zhou 1 , Ang Lu 1
Affiliation  

With the increasing interests in the fields of wearable devices, it is essential yet also challenging to develop electronic skin with customized functionalities, especially for harsh conditions. Herein, by using KCl as both anti-solvent for cellulose regeneration and ionic charge carrier in the cellulose gel network, cellulose/KCl/sorbitol organohydrogel (CKS) combining transparency (over 95% at 550 nm), stretchability (235%), high conductivity (3.88 S/m), and low temperature tolerance (−51.8 °C) was prepared. The CKS based electronic skin achieved simultaneous monitoring of object contact-separation/pressure, stretching/bending and thermal variation, with excellent reliability and stability even in harsh conditions, resembling the human skin with multiply functions. The CKS based electronic skin as efficient human-machine interface was also demonstrated. Furthermore, the CKS based triboelectric nanogenerator delivered a power density of 991 mW/m2, potential as mechanical energy harvesters for wearable devices. We believe the present work will inspire the development of cellulose based skin-like materials and contribute to the comprehensive utilization of naturel polymer in the field of smart devices.



中文翻译:

基于纤维素/KCl/山梨醇有机水凝胶的电子皮肤

随着人们对可穿戴设备领域的兴趣日益浓厚,开发具有定制功能的电子皮肤至关重要,但也具有挑战性,尤其是在恶劣条件下。在此,通过使用氯化钾作为纤维素再生的抗溶剂和纤维素凝胶网络中的离子电荷载体,纤维素/氯化钾/山梨糖醇有机水凝胶 (CKS) 结合了透明度(在 550 nm 处超过 95%)、拉伸性(235%)、高制备了电导率(3.88 S / m)和低温耐受性(-51.8°C)。基于CKS的电子皮肤实现了对物体接触分离/压力、拉伸/弯曲和热变化的同步监测,即使在恶劣的条件下也具有出色的可靠性和稳定性,类似于人类皮肤的多功能。还展示了基于 CKS 的电子皮肤作为高效的人机界面。此外,基于 CKS 的摩擦纳米发电机的功率密度为 991 mW/m2,作为可穿戴设备的机械能量收集器的潜力。我们相信目前的工作将激发纤维素类皮肤材料的发展,并为天然聚合物在智能设备领域的综合利用做出贡献。

更新日期:2022-05-26
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