Fully Printed, Highly Sensitive Multifunctional Artificial Electronic Whisker Arrays Integrated with Strain and Temperature Sensors
Fully Printed, Highly Sensitive Multifunctional Artificial Electronic Whisker Arrays Integrated with Strain and Temperature Sensors
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DOI：
10.1021/nn500845a
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发表时间：
2014-04-01
期刊：
影响因子：
17.1
通讯作者：
Takei, Kuniharu
中科院分区：
文献类型：
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作者：
Harada, Shingo;Honda, Wataru;Takei, Kuniharu
模仿哺乳动物的功能电子设备在机器人、可穿戴和健康监测系统以及人机界面方面具有巨大的潜力。实现这些设备的关键是(1)高灵敏度传感器，(2)在柔性基板上经济地制造宏观设备，以及(3)超越哺乳动物功能的多功能。虽然高灵敏度的人工电子器件已经被报道，但没有一个是用成本效益高的宏观印刷方法制造的，也没有一个显示出人工电子的多功能。在此，我们报道了使用可打印的纳米复合材料墨水完全打印出具有应变和温度传感器的高灵敏度多功能人造电子须（e-须）。重要的是，改变组成比可以调整应变的灵敏度。此外，除了哺乳动物须的功能外，印刷的温度传感器阵列还可以与应变传感器阵列结合。应变传感器的灵敏度非常高（类似于59%/Pa），这是迄今为止报道的最佳灵敏度（提高了7倍）。作为一个真正可打印的多功能人工电子须阵列的概念验证，展示了二维和三维空间和温度分布映射。这种完全可打印的柔性传感器阵列应该适用于广泛的低成本宏观电气应用。
Mammalian-mimicking functional electrical devices have tremendous potential in robotics, wearable and health monitoring systems, and human interfaces. The keys to achieve these devices are (1) highly sensitive sensors, (2) economically fabricated macroscale devices on flexible substrates, and (3) multifunctions beyond mammalian functions. Although highly sensitive artificial electronic devices have been reported, none have been fabricated using cost-effective macroscale printing methods and demonstrate multifunctionalities of artificial electronics. Herein we report fully printed high-sensitivity multifunctional artificial electronic whiskers (e-whisker) integrated with strain and temperature sensors using printable nanocomposite inks. Importantly, changing the composition ratio tunes the sensitivity of strain. Additionally, the printed temperature sensor array can be incorporated with the strain sensor array beyond mammalian whisker functionalities. The sensitivity for the strain sensor is impressively high (similar to 59%/Pa), which is the best sensitivity reported to date (>7 x improvement). As the proof-of-concept for a truly printable multifunctional artificial e-whisker array, two- and three-dimensional space and temperature distribution mapping are demonstrated. This fully printable flexible sensor array should be applicable to a wide range of low-cost macroscale electrical applications.