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Triboelectric nanogenerator as self-powered impact force sensor for falling object
Aminullah,Ajab Khan Kasi,Jafar Khan Kasi,Moiz Uddin,Muzamil Bokhari 한국물리학회 2020 Current Applied Physics Vol.20 No.1
In this research, a simple and an innovative design of triboelectric nanogenerator (TENG) is reported that converts impact response in electrical signal. The two contacts of vertical separation mode TENG consist of Al and nanostructured PDMS with integral spacer of 1.5 mm. The feature size of 80 nm PDMS domes was achieved by replicating nanostructured aluminum. The performance of the device was measured by applying the mechanical pulses of 4 kgf at frequency of 3 Hz. The fabricated TENG demonstrated 0.73mW output power at load resistance of 107 Ω. The nanostructured PDMS TENG was successfully used as self-powered impact sensor by falling small objects on it. The impact force of 1 g metallic ball from different height was calculated directly from the output voltage of TENG which showed an outstanding correlation with impact force calculated from workenergy theorem.
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Rafique Sumera,Kasi Ajab Khan,Aminullah,Kasi Jafar Khan,Bokhari Muzamil,Zafar Shakoor 한국물리학회 2021 Current Applied Physics Vol.21 No.-
In this research, a unique strategy was developed to enhance the output performance of 2D ZnO nanosheets based piezoelectric nanogenerator (PENG). The Br doped 2D ZnO nanosheets were fabricated by facile hydrothermal method on nanoporous anodic aluminum oxide (AAO) template. Along with structural and optical characterization of Br doped 2D ZnO nanosheets, the electrical output performance of Br doped 2D ZnO PENG was demonstrated under external mechanical force. The corresponding output voltage of Br doped 2D ZnO nanosheets PENG reached to 8.82 V at 6HZ, which is 3 times higher than undoped ZnO nanosheets PENG. The output power density of Br doped 2D ZnO nanosheets PENG reached to 38.8962μWcm 2 at an external load resistanec of about 2 MΩ. The Br doping in ZnO nanosheets significantly increased the sensitivity of PENG for pressure sensing and the flexibility of PENG contribute in the application of position sensing.
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