Strain sensors with high stretchability, broad strain range, high sensitivity, and good reliability are desirable, owing to their promising applications in electronic skins and human motion monitoring systems. In this paper, we report a high-performance strain sensor based on printable and stretchable electrically conductive elastic composites. This strain sensor is fabricated by mixing silver-coated polystyrene spheres (PS@Ag) and liquid polydimethylsiloxane (PDMS) and screen-printed to a desirable geometry. The strain sensor exhibits fascinating comprehensive performances, including high electrical conductivity (1.65 × 104 S/m), large workable strain range (> 80%), high sensitivity (gauge factor of 17.5 in strain of 0%–10%, 6.0 in strain of 10%–60% and 78.6 in strain of 60%–80%), inconspicuous resistance overshoot (< 15%), good reproducibility and excellent long-term stability (1,750 h at 85 °C/85% relative humidity) for PS@Ag/PDMS-60, which only contains ∼ 36.7 wt.% of silver. Simultaneously, this strain sensor provides the advantages of low-cost, simple, and large-area scalable fabrication, as well as robust mechanical properties and versatility in applications. Based on these performance characteristics, its applications in flexible printed electrodes and monitoring vigorous human motions are demonstrated, revealing its tremendous potential for applications in flexible and wearable electronics.

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由于其在电子皮肤和人体运动监测系统中的有希望的应用，因此期望具有高拉伸性，宽应变范围，高灵敏度和良好可靠性的应变传感器。在本文中，我们报告了一种基于可印刷和可拉伸导电弹性复合材料的高性能应变传感器。该应变传感器是通过将涂银的聚苯乙烯球（PS @ Ag）和液体聚二甲基硅氧烷（PDMS）混合并丝网印刷成所需的几何形状而制成的。应变传感器具有令人着迷的综合性能，包括高电导率（1.65×104 S / m），较大的工作应变范围（> 80％），高灵敏度（应变率为0％–10％的应变系数为17.5，应变为6.0分别为10％–60％和78.6，应变为60％–80％），不起眼的电阻过冲（<15％），PS @ Ag / PDMS-60具有良好的重现性和出色的长期稳定性（在85°C / 85％相对湿度下为1,750 h），仅含约36.7 wt。％的银。同时，该应变传感器具有低成本，简单且可大面积扩展的制造优势，并具有强大的机械性能和通用性。基于这些性能特征，展示了其在柔性印刷电极中的应用以及对人体剧烈运动的监控，从而揭示了其在柔性和可穿戴电子产品中的巨大潜力。以及强大的机械性能和通用性。基于这些性能特征，展示了其在柔性印刷电极中的应用以及对人体剧烈运动的监控，从而揭示了其在柔性和可穿戴电子产品中的巨大潜力。以及强大的机械性能和通用性。基于这些性能特征，展示了其在柔性印刷电极中的应用以及对人体剧烈运动的监控，从而揭示了其在柔性和可穿戴电子产品中的巨大潜力。

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