title: Large Scale Triboelectric Nanogenerator and Self-Powered Pressure Sensor Array Using Low Cost Roll-to-Roll UV Embossing.
abstract: 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.
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576.|NUS Graduate School for Integrative Sciences and Engineering, Centre for Life Sciences (CeLS), 28 Medical Drive, Singapore 117456.
authors.forename: Lokesh
authors.initials: L
authors.lastname: Dhakar
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576.
authors.forename: Sudeep
authors.initials: S
authors.lastname: Gudla
authors.affiliation: Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075.
authors.forename: Xuechuan
authors.initials: X
authors.lastname: Shan
authors.affiliation: Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075.
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Wang
authors.affiliation: NUS Graduate School for Integrative Sciences and Engineering, Centre for Life Sciences (CeLS), 28 Medical Drive, Singapore 117456.|Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575.
authors.forename: Francis Eng Hock
authors.initials: FE
authors.lastname: Tay
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576.
authors.forename: Chun-Huat
authors.initials: CH
authors.lastname: Heng
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576.
authors.forename: Chengkuo
authors.initials: C
authors.lastname: Lee