Biofuel-powered soft electronic skin with multiplexed and wireless sensing for human-machine interfaces
Biofuel-powered soft electronic skin with multiplexed and wireless sensing for human-machine interfaces
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DOI：
10.1126/scirobotics.aaz7946
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发表时间：
2020-04
期刊：
影响因子：
25
通讯作者：
You Yu;Joanna Nassar;Changhao Xu;Jihong Min;Yiran Yang;Adam Dai;Rohan Doshi;Adrian Huang;
中科院分区：
文献类型：
--
作者：
You Yu;Joanna Nassar;Changhao Xu;Jihong Min;Yiran Yang;Adam Dai;Rohan Doshi;Adrian Huang;
一个灵活的和完全生物燃料供电的电子皮肤，使连续的，多路复用的，多模式的无线传感。现有的电子皮肤（e-skin）感测平台被配备成使用来自电池的电力或近场通信来监测物理参数。电子皮肤要应用于下一代机器人和医疗设备，它们必须无线操作并自供电。然而，尽管最近努力从人体收集能量，但由于缺乏连续的能源和有限的功率效率，具有利用蓝牙通信执行生物感测的能力的自供电电子皮肤受到限制。在这里，我们报告了一个灵活的和完全出汗供电的集成电子皮肤（PPES）的多路复用代谢传感原位。无电池电子皮肤包含多模态传感器和高效乳酸生物燃料电池，使用独特的零至三维纳米材料集成，以实现高功率强度和长期稳定性。PPES在未经处理的人体体液（人类汗液）中为生物燃料电池提供了破纪录的3.5毫瓦·厘米-2的功率密度，并在60小时连续运行期间显示出非常稳定的性能。它选择性地监测关键代谢分析物（例如，尿素、NH 4+、葡萄糖和pH）和皮肤温度，并使用蓝牙将数据无线传输到用户界面。PPES还能够监测肌肉收缩，并作为人类假肢行走的人机界面。
A flexible and fully biofuel-powered electronic skin enables continuous, multiplexed, and multimodal wireless sensing. Existing electronic skin (e-skin) sensing platforms are equipped to monitor physical parameters using power from batteries or near-field communication. For e-skins to be applied in the next generation of robotics and medical devices, they must operate wirelessly and be self-powered. However, despite recent efforts to harvest energy from the human body, self-powered e-skin with the ability to perform biosensing with Bluetooth communication are limited because of the lack of a continuous energy source and limited power efficiency. Here, we report a flexible and fully perspiration-powered integrated electronic skin (PPES) for multiplexed metabolic sensing in situ. The battery-free e-skin contains multimodal sensors and highly efficient lactate biofuel cells that use a unique integration of zero- to three-dimensional nanomaterials to achieve high power intensity and long-term stability. The PPES delivered a record-breaking power density of 3.5 milliwatt·centimeter−2 for biofuel cells in untreated human body fluids (human sweat) and displayed a very stable performance during a 60-hour continuous operation. It selectively monitored key metabolic analytes (e.g., urea, NH4+, glucose, and pH) and the skin temperature during prolonged physical activities and wirelessly transmitted the data to the user interface using Bluetooth. The PPES was also able to monitor muscle contraction and work as a human-machine interface for human-prosthesis walking.