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Scalable and Automated Fabrication of Conductive Tough-Hydrogel Microfibers with Ultrastretchability, 3D Printability, and Stress Sensitivity
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-05 00:00:00 , DOI: 10.1021/acsami.8b00379 Shanshan Wei , Gang Qu , Guanyi Luo , Yuxing Huang , Huisheng Zhang , Xuechang Zhou , Liqiu Wang 1, 2 , Zhou Liu , Tiantian Kong 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-05 00:00:00 , DOI: 10.1021/acsami.8b00379 Shanshan Wei , Gang Qu , Guanyi Luo , Yuxing Huang , Huisheng Zhang , Xuechang Zhou , Liqiu Wang 1, 2 , Zhou Liu , Tiantian Kong 2
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Creating complex three-dimensional structures from soft yet durable materials enables advances in fields such as flexible electronics, regenerating tissue engineering, and soft robotics. Tough hydrogels that mimic the human skin can bear enormous mechanical loads. By employing a spider-inspired biomimetic microfluidic nozzle, we successfully achieve continuous printing of tough hydrogels into fibers, two-dimensional networks, and even three-dimensional structures without compromising their extreme mechanical properties. The resultant thin fibers demonstrate a stretch up to 21 times of their original length at a water content of 52%, and are intrinsically transparent, biocompatible, and conductive at high stretches. Moreover, the printed robust tough-hydrogel networks can sense strain that are orders of magnitude lower than stretchable conductors by percolations of conductive particles. To demonstrate their potential application, we use printed tough-hydrogel fiber networks as wearable sensors for detecting human motions. The capability to shape tough hydrogels into complex structures by scalable continuous printing opens opportunities for new areas of applications such as tissue scaffolds, large-area soft electronics, and smart textiles.
中文翻译：
具有超拉伸性，3D可印刷性和应力敏感性的导电性韧性水凝胶微纤维的可扩展和自动化制造
用柔软耐用的材料创建复杂的三维结构，可以在诸如柔性电子，再生组织工程和软机器人等领域取得进步。模仿人类皮肤的坚韧水凝胶可以承受巨大的机械负荷。通过采用仿蜘蛛启发的仿生微流体喷嘴，我们成功地将坚韧的水凝胶连续印刷到纤维，二维网络甚至是三维结构中，而不会损害其极端的机械性能。所得的细纤维在水含量为52％时表现出高达其原始长度的21倍拉伸，并且本质上是透明的，生物相容性的，并且在高拉伸下具有导电性。而且，印刷的坚固的硬质水凝胶网络可以通过导电颗粒的渗透来感知比可拉伸导体低几个数量级的应变。为了证明其潜在的应用，我们使用印刷的坚韧水凝胶纤维网络作为可穿戴传感器来检测人体运动。通过可扩展的连续印刷将坚韧的水凝胶成型为复杂结构的能力，为组织支架，大面积软电子产品和智能纺织品等新的应用领域提供了机会。
更新日期：2018-03-05
中文翻译：
具有超拉伸性，3D可印刷性和应力敏感性的导电性韧性水凝胶微纤维的可扩展和自动化制造
用柔软耐用的材料创建复杂的三维结构，可以在诸如柔性电子，再生组织工程和软机器人等领域取得进步。模仿人类皮肤的坚韧水凝胶可以承受巨大的机械负荷。通过采用仿蜘蛛启发的仿生微流体喷嘴，我们成功地将坚韧的水凝胶连续印刷到纤维，二维网络甚至是三维结构中，而不会损害其极端的机械性能。所得的细纤维在水含量为52％时表现出高达其原始长度的21倍拉伸，并且本质上是透明的，生物相容性的，并且在高拉伸下具有导电性。而且，印刷的坚固的硬质水凝胶网络可以通过导电颗粒的渗透来感知比可拉伸导体低几个数量级的应变。为了证明其潜在的应用，我们使用印刷的坚韧水凝胶纤维网络作为可穿戴传感器来检测人体运动。通过可扩展的连续印刷将坚韧的水凝胶成型为复杂结构的能力，为组织支架，大面积软电子产品和智能纺织品等新的应用领域提供了机会。
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