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.
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机译：摩擦电纳米发电机（TENGs）由于易于制造，高效率和广泛的材料选择，已成为通过压电和电磁等常规机制进行机械能收集的潜在解决方案。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，以实现更高的性能。但是，缺乏真正可扩展的制造工艺仍然是将TENG投入商业化生产的关键挑战和瓶颈。在本文中，我们演示了使用卷对卷紫外线压印对聚对苯二甲酸乙二酯片进行图案化的大型摩擦纳米发电机（LS-TENG）的制造。这些LS-TENG可分别用于从人体运动和车辆运动中从地板和道路中的嵌入式设备中收集能量。 LS-TENG产生的功率密度为62.5 mW m -2 。使用卷对卷处理技术，我们还演示了一种大型摩擦电压力传感器阵列，其压力检测灵敏度为1.33 V kPa -1 。大型压力传感器阵列可应用于自供电运动跟踪，姿势监测和电子皮肤应用。这项工作证明了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。
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