Journal
ACS NANO
Volume 12, Issue 4, Pages 3461-3467Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b00140
Keywords
triboelectric nanogenerator; noncontact sensor; self-powered positioning and motion-tracking system
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Funding
- National key R and D project [2016YFA0202702]
- National Natural Science Foundation of China (NSFC) [21575009, 21173017, 51272011, 21275102, 51432005, Y4YR011001]
- science and technology research projects from education ministry [213002A]
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Recent development of interactive motion-tracking and positioning technologies is attracting increasing interests in many areas, such as wearable electronics, intelligent electronics, and the internet of things. For example, the so-called somatosensory technology can afford users strong empathy of immersion and realism due to their consistent interaction with the game. Here, we report a noncontact self-powered positioning and motion-tracking system based on a freestanding triboelectric nanogenerator (TENG). The TENG was fabricated by a nanoengineered surface in the contact-separation mode with the use of a free moving human body (hands or feet) as the trigger. The poly(tetrafluoroethylene) (PTFE) arrays based interactive interface can give an output of 222 V from casual human motions. Different from previous works, this device also responses to a small action at certain heights of 0.01-0.11 m from the device with a sensitivity of about 315 V.m(-1), so that the mechanical sensing is possible. Such a distinctive noncontact sensing feature promotes a wide range of potential applications in smart interaction systems.
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