Different from the traditional ways for enhancing the dielectric properties of polymers by compositing with rigid electronic conductors, here an alternative strategy is reported via introducing ionically conductive liquid electrolytes as functional fillers. Dielectric constant has significantly improved (up to 600%) by liquid electrolyte inclusions in an elastomer matrix. Moreover, by taking advantage of the inherent transparency of liquid electrolyte fillers, high transparency, good stretchability, and high dielectric constant are achieved simultaneously. Using the composite elastomer, the fabrication of highly sensitive strain sensor is demonstrated with 5–6 times higher sensitivity than the pristine elastomer, and flexible electroluminescent device with greatly lowed driving voltage. The strategy provides new opportunities for novel electroactive polymers, including flexible touchscreen panels and displays, biomimetic soft machines, and smart optics.

中文翻译：

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通过液体电解质包裹体提高聚合物的介电常数

与通过与刚性电子导体复合来增强聚合物介电性能的传统方式不同，这里报道了通过引入离子导电液体电解质作为功能性填料的另一种策略。通过弹性体基质中的液体电解质夹杂物，介电常数已显着提高（高达600％）。此外，通过利用液体电解质填充剂的固有透明性，同时实现了高透明性，良好的拉伸性和高介电常数。使用复合弹性体，可以证明制造高灵敏度应变传感器的灵敏度是原始弹性体的5-6倍，并且柔性电致发光器件的驱动电压大大降低。