Large Scale Triboelectric Nanogenerator and Self-Powered Pressure Sensor Array Using Low Cost Roll-to-Roll UV Embossing.
Large Scale Triboelectric Nanogenerator and Self-Powered Pressure Sensor Array Using Low Cost Roll-to-Roll UV Embossing.
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DOI：
10.1038/srep22253
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发表时间：
2016-02-24
影响因子：
4.6
通讯作者：
Lee C
中科院分区：
文献类型：
--
作者：
Dhakar L;Gudla S;Shan X;Wang Z;Tay FE;Heng CH;Lee C
摩擦电纳米发电机（TENG）由于易于制造、效率高和材料选择范围广，已成为传统机械能量收集机制（如压电和电磁）的潜在解决方案。用于实现TENG的传统制造技术涉及等离子体蚀刻、软光刻和纳米颗粒沉积以获得更高的性能。但是，缺乏真正可扩展的制造工艺仍然是将TENG推向商业化生产的关键挑战和瓶颈。在本文中，我们展示了大规模的摩擦电纳米发电机（LS-TENG）的制造使用卷对卷紫外线压花图案聚对苯二甲酸乙二醇酯片材。这些LS-TENG可用于分别从地板和道路中的嵌入式设备中的人体运动和车辆运动中获取能量。LS-TENG产生的功率密度为62.5 mW m−2。使用卷对卷处理技术，我们还展示了一个大规模的摩擦电压力传感器阵列，压力检测灵敏度为1.33 V kPa−1。大规模压力传感器阵列在自供电运动跟踪、姿势监测和电子皮肤应用中具有应用。这项工作展示了TENG和自供电压力传感器阵列的可扩展制造，这将导致极低的成本，并使它们更接近商业生产。
Triboelectric nanogenerators (TENGs) have emerged as a potential solution for mechanical energy harvesting over conventional mechanisms such as piezoelectric and electromagnetic, due to easy fabrication, high efficiency and wider choice of materials. Traditional fabrication techniques used to realize TENGs involve plasma etching, soft lithography and nanoparticle deposition for higher performance. But lack of truly scalable fabrication processes still remains a critical challenge and bottleneck in the path of bringing TENGs to commercial production. In this paper, we demonstrate fabrication of large scale triboelectric nanogenerator (LS-TENG) using roll-to-roll ultraviolet embossing to pattern polyethylene terephthalate sheets. These LS-TENGs can be used to harvest energy from human motion and vehicle motion from embedded devices in floors and roads, respectively. LS-TENG generated a power density of 62.5 mW m−2. Using roll-to-roll processing technique, we also demonstrate a large scale triboelectric pressure sensor array with pressure detection sensitivity of 1.33 V kPa−1. The large scale pressure sensor array has applications in self-powered motion tracking, posture monitoring and electronic skin applications. This work demonstrates scalable fabrication of TENGs and self-powered pressure sensor arrays, which will lead to extremely low cost and bring them closer to commercial production.