Carbonized Silk Nanofiber Membrane for Transparent and Sensitive Electronic Skin
Carbonized Silk Nanofiber Membrane for Transparent and Sensitive Electronic Skin
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用于透明敏感电子皮肤的碳化丝纳米纤维膜
DOI：
10.1002/adfm.201605657
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发表时间：
2017-03-03
影响因子：
19
通讯作者：
Zhang, Yingying
中科院分区：
文献类型：
--
作者：
Wang, Qi;Jian, Muqiang;Zhang, Yingying
近年来，电子皮肤得到了爆炸式的发展。高灵敏度的压力传感是电子皮肤的主要功能之一。迄今为止，大多数报道的类皮肤压力传感器都是基于纳米材料和微结构聚二甲基硅氧烷（PDMS）薄膜，由于未知的生物毒性和制造过程的冗余，限制了它们的广泛实际应用。我们迫切需要一种具有成本效益、大面积能力和生物相容性的方法来制造高性能的类皮肤压力传感器。丝素蛋白（SF）是一种天然蛋白，近年来因其作为柔性电子材料的基底而受到广泛关注。在这里，皮肤样的压力传感器的制造是演示使用sf衍生的活性材料。利用透明碳化丝纳米纤维膜（CSilkNM）和非结构化PDMS薄膜，可以通过成本效益高和大规模可行的方法制造柔性保形压力传感器。由于CSilkNM独特的n掺杂碳纳米纤维网络结构，所获得的压力传感器表现出优异的性能，包括在宽压力范围内的超高灵敏度（34.47 kPa(-1)），超低检测限（0.8 Pa），快速响应时间（10,000循环）。基于其优越的性能，介绍了其在人体生理信号监测、细微触觉感知、压力空间分布检测等方面的应用。
Recent years have witnessed the explosive development of electronic skin. Highly sensitive pressure sensing is one of the primary abilities of electronic skin. To date, most of the reported skin-like pressure sensors are based on nanomaterials and microstructured polydimethylsiloxane (PDMS) films, limiting their wide practical applications due to the unknown biotoxicity and the redundant fabrication procedure. A cost-effective, large-area-capable, and biocompatible approach for fabrication of high-performance skin-like pressure sensors is highly desired. Silk fibroin (SF) is a natural protein that has recently drawn great attention due to its application as the substrate for flexible electronics. Here, the fabrication of skin-like pressure sensors is demonstrated using SF-derived active materials. Flexible and conformal pressure sensors can be fabricated using transparent carbonized silk nanofiber membranes (CSilkNM) and unstructured PDMS films through a cost-effective and large-scale capable approach. Due to the unique N-doped carbon nanofiber network structure of CSilkNM, the obtained pressure sensor shows superior performance, including ultrahigh sensitivity (34.47 kPa(-1)) for a broad pressure range, an ultralow detection limit (0.8 Pa), rapid response time (10 000 cycles). Based on its superior performance, its applications in monitoring human physiological signals, sensing subtle touch, and detecting spatial distribution of pressure are demonstrated.