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An ambient-stable and stretchable ionic skin with multimodal sensation
Materials Horizons ( IF 12.2 ) Pub Date : 2019/10/11 , DOI: 10.1039/c9mh00715f Binbin Ying 1, 2, 3, 4, 5 , Qiyang Wu 1, 2, 3, 4, 5 , Jianyu Li 4, 5, 6, 7, 8 , Xinyu Liu 1, 2, 3, 4, 5
Materials Horizons ( IF 12.2 ) Pub Date : 2019/10/11 , DOI: 10.1039/c9mh00715f Binbin Ying 1, 2, 3, 4, 5 , Qiyang Wu 1, 2, 3, 4, 5 , Jianyu Li 4, 5, 6, 7, 8 , Xinyu Liu 1, 2, 3, 4, 5
Affiliation
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Skin serves as a physical and hygroscopic barrier to protect the inner body, and also contains sensory receptors to perceive environmental and mechanical stimuli. To recapitulate these salient features, hydrogel-based artificial skins have been developed. However, existing designs are constrained by limited functionality, low stability, and requirement of external power. Herein, a novel artificial ionic skin (AIskin) – an analog of the diode based on controlled ion mobility – is demonstrated with high toughness, stretchability, ambient stability and transparency. The AIskin consists of a bilayer of oppositely-charged, double-network hydrogel, and converts mechanical stimuli and humidity into signals of resistance, capacitance, open-circuit voltage (OCV), and short-circuit current (SCC), among which the OCV- and SCC-based sensing signals are self-generated. Its multimodal sensation is maintained in a wide range of relative humidities (13–85%). It is demonstrated for wearable strain-humidity sensing, human–machine interaction and walking energy harvesting. This work will open new avenues toward next-generation, skin-inspired wearable electronics.
中文翻译：
具有多态感觉的环境稳定且可拉伸的离子型皮肤
皮肤既是保护体内的物理和吸湿屏障，又含有感觉受体，可感知环境和机械刺激。为了概括这些显着特征，已经开发了基于水凝胶的人造皮肤。但是，现有设计受到功能受限，稳定性低和外部电源需求的限制。本文展示了一种新颖的人造离子皮肤（AIskin）-一种基于可控离子迁移率的二极管类似物-具有高韧性，可拉伸性，环境稳定性和透明性。AIskin由一层带相反电荷的双网络水凝胶组成，并将机械刺激和湿度转换为电阻，电容，开路电压（OCV）和短路电流（SCC）的信号，其中基于OCV和SCC的传感信号是自生成的。在广泛的相对湿度范围内（13％至85％），可保持其多峰感觉。它可用于穿戴式应变-湿度传感，人机交互和步行能量收集。这项工作将为下一代，受皮肤启发的可穿戴电子设备开辟新的途径。
更新日期：2020-02-13
中文翻译：
具有多态感觉的环境稳定且可拉伸的离子型皮肤
皮肤既是保护体内的物理和吸湿屏障，又含有感觉受体，可感知环境和机械刺激。为了概括这些显着特征，已经开发了基于水凝胶的人造皮肤。但是，现有设计受到功能受限，稳定性低和外部电源需求的限制。本文展示了一种新颖的人造离子皮肤（AIskin）-一种基于可控离子迁移率的二极管类似物-具有高韧性，可拉伸性，环境稳定性和透明性。AIskin由一层带相反电荷的双网络水凝胶组成，并将机械刺激和湿度转换为电阻，电容，开路电压（OCV）和短路电流（SCC）的信号，其中基于OCV和SCC的传感信号是自生成的。在广泛的相对湿度范围内（13％至85％），可保持其多峰感觉。它可用于穿戴式应变-湿度传感，人机交互和步行能量收集。这项工作将为下一代，受皮肤启发的可穿戴电子设备开辟新的途径。
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