Lu Qianying, Zhou Yunlei, Yin Xiangfei, Cao Shitai, Wang Xiaoliang, Kong Desheng
College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China.
Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, China.
Research (Wash D C). 2021 Dec 14;2021:9874939. doi: 10.34133/2021/9874939. eCollection 2021.
In contrast to ionically conductive liquids and gels, a new type of yield-stress fluid featuring reversible transitions between solid and liquid states is introduced in this study as a printable, ultrastretchable, and transparent conductor. The fluid is formulated by dispersing silica nanoparticles into the concentrated aqueous electrolyte. The -printed features show solid-state appearances to allow facile encapsulation with elastomers. The transition into liquid-like behavior upon tensile deformations is the enabler for ultrahigh stretchability up to the fracture strain of the elastomer. Successful integrations of yield-stress fluid electrodes in highly stretchable strain sensors and light-emitting devices illustrate the practical suitability. The yield-stress fluid represents an attractive building block for stretchable electronic devices and systems in terms of giant deformability, high ionic conductivity, excellent optical transmittance, and compatibility with various elastomers.
与离子导电液体和凝胶不同，本研究引入了一种新型的屈服应力流体，它具有在固态和液态之间的可逆转变特性，可作为可印刷、超拉伸且透明的导体。该流体通过将二氧化硅纳米颗粒分散到浓水电解质中配制而成。印刷后的特征呈现固态外观，便于用弹性体进行封装。拉伸变形时转变为类似液体的行为是实现高达弹性体断裂应变的超高拉伸性的关键。屈服应力流体电极成功集成到高拉伸应变传感器和发光器件中，说明了其实际适用性。就巨大的可变形性、高离子导电性、出色的光学透射率以及与各种弹性体的兼容性而言，屈服应力流体是可拉伸电子器件和系统极具吸引力的构建模块。
