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- W4313479968 endingPage "108122" @default.
- W4313479968 startingPage "108122" @default.
- W4313479968 abstract "Triboelectric nanogenerators (TENGs) are energy harvesters generating electricity via the triboelectric effect and electrostatic induction. However, the influence of interface mechanics on TENG performance requires attention. Here, we study the effect of random multiscale surface roughness on TENG performance using a novel in-situ optical technique to directly visualise the contact interface. To achieve this, a new type of TENG is developed based on transparent mica in contact with polyvinyl siloxane (PVS). A wide range of surface roughness instances were created on the PVS surface (Sq from 1.5 to 82.5 µm) by replicating 3D-printed masters developed from numerically generated rough surfaces. TENG output was found to be highly sensitive to surface roughness over a wide range of forces and frequencies. The dependence of real contact area on roughness was identified as the underlying cause. In this work, electrical output (and contact area) decreased significantly with increasing roughness. The highest output (smoothest PVS surface) gave open circuit voltage 222.8 V, short-circuit current density 53 mA/m2 and peak-power density 4256 mW/m2: a competitive output given the rapid and simple fabrication, low cost and long durability demonstrated. The new Mica-PVS TENG, the direct technique for TENG interface visualisation and the insights on the role of topography and contact area will be invaluable for future TENG design." @default.
- W4313479968 created "2023-01-06" @default.
- W4313479968 creator A5004982788 @default.
- W4313479968 creator A5038029667 @default.
- W4313479968 creator A5050935840 @default.
- W4313479968 creator A5054840757 @default.
- W4313479968 creator A5065211795 @default.
- W4313479968 creator A5072885533 @default.
- W4313479968 creator A5075191166 @default.
- W4313479968 date "2023-03-01" @default.
- W4313479968 modified "2023-10-17" @default.
- W4313479968 title "Multiscale in-situ quantification of the role of surface roughness and contact area using a novel Mica-PVS triboelectric nanogenerator" @default.
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