Rapid production of large-area, transparent and stretchable electrodes using metal nanofibers as wirelessly operated wearable heaters
Rapid production of large-area, transparent and stretchable electrodes using metal nanofibers as wirelessly operated wearable heaters
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DOI：
10.1038/am.2017.172
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发表时间：
2017-09-08
影响因子：
9.7
通讯作者：
Park, Jang-Ung
中科院分区：
文献类型：
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作者：
Jang, Jiuk;Hyun, Byung Gwan;Park, Jang-Ung
对可穿戴电子产品的快速增长的兴趣导致了可拉伸和透明加热膜的发展，这些加热膜可以取代传统的易碎和不透明的加热器。在此，我们描述了使用静电纺丝超长金属纳米纤维（mNF）快速生产大面积、可拉伸和透明电极，并展示了它们作为无线操作的可穿戴加热器的潜在用途。这些mNF网络提供了优异的光电性能（薄层电阻类似于1.3O/sq，光学透射率类似于90%）和机械可靠性（90%拉伸性）。可以通过调节mNF网络的面积分数来控制光电性质，这也使得能够调制加热器的功耗。例如，加热器的低薄层电阻呈现出0.65W cm（-2）的出色功率效率（在4.5V的低DC电压下温度达到250摄氏度），这比传统的基于氧化铟锡的加热器的性能好10倍。此外，我们还演示了使用蓝牙智能设备对加热膜温度的无线精细控制，这表明这种加热膜在下一代可穿戴电子产品中的应用前景广阔。
A rapidly growing interest in wearable electronics has led to the development of stretchable and transparent heating films that can replace the conventional brittle and opaque heaters. Herein, we describe the rapid production of large-area, stretchable and transparent electrodes using electrospun ultra-long metal nanofibers (mNFs) and demonstrate their potential use as wirelessly operated wearable heaters. These mNF networks provide excellent optoelectronic properties (sheet resistance of similar to 1.3 O per sq with an optical transmittance of similar to 90%) and mechanical reliability (90% stretchability). The optoelectronic properties can be controlled by adjusting the area fraction of the mNF networks, which also enables the modulation of the power consumption of the heater. For example, the low sheet resistance of the heater presents an outstanding power efficiency of 0.65 W cm(-2) (with the temperature reaching 250 degrees C at a low DC voltage of 4.5 V), which is similar to 10 times better than the properties of conventional indium tin oxide-based heaters. Furthermore, we demonstrate the wireless fine control of the temperature of the heating film using Bluetooth smart devices, which suggests substantial promise for the application of this heating film in next-generation wearable electronics.