Ionotronic skin (i-skin) has drawn considerable attention, because it can interface with different systems to sense and respond to external stimuli, such as force and temperature. However, safety issues, such as biosecurity, sustainability, and safety in use, are rarely considered in i-skin designs. In this study, a flame-retardant and biosafe i-skin was developed by using silk fibroin and Ca²⁺ ions as starting materials. The structures, performance, and safety issues of the i-skins were well-balanced. The resultant i-skins not only maintained the advantages of conventional i-skins, such as conductivity, transparency, high stretchability, and self-healing ability, but also featured outstanding flame retardancy and temperature sensibility. With these features, an automated fire alarm system was designed to detect possible fire conditions. Benefiting from their low cost, stretchability, and sustainability, these i-skins are expected to be employed in a range of emerging fields, such as flame-retardant materials, fire alarms, temperature sensors, and human/machine interfaces.

中文翻译：

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阻燃和可持续的丝绸电离电子皮肤，用于火警系统

电离皮肤（i-skin）已经引起了广泛的关注，因为它可以与不同的系统进行交互以感知和响应外部刺激，例如力和温度。但是，在i-skin设计中很少考虑诸如生物安全性，可持续性和使用安全性之类的安全性问题。在这项研究中，使用丝素蛋白和Ca ²⁺开发了一种具有阻燃性和生物安全性的i-skin离子作为起始原料。i蒙皮的结构，性能和安全性问题得到了很好的平衡。所得的i-皮肤不仅保持了常规i-皮肤的优点，例如导电性，透明性，高拉伸性和自修复能力，而且还具有出色的阻燃性和温度敏感性。通过这些功能，设计了一个自动火灾警报系统来检测可能的火灾情况。得益于其低成本，可拉伸性和可持续性，这些i-skins有望在一系列新兴领域中使用，例如阻燃材料，火灾报警器，温度传感器和人机界面。