Abstract
Understanding the mechanism of charge generation, distribution, and transfer between surfaces is very important for energy harvesting applications based on triboelectric effect. Here, we demonstrate dynamic nanotriboelectrification with torsional resonance (TR) mode atomic force microscopy (AFM). Experiments on rubbing the sample surface using TR mode for the generation of triboelectric charges and in-situ characterization of the charge distribution using scanning Kelvin probe microcopy (SKPM) were performed. This method allows the tip to perform lateral oscillation and maintains the tip-sample interaction in the attractive region to ensure high efficiency of the charge generation during the rubbing process. The measured efficiency of generating triboelectric charges can achieve ~10.53 times higher than conventional static/contact mode in the triboelectrification experiments. In addition to the charge generation, local discharging experiments were also performed. This work would provide a new method to generate patterned charges and also be helpful in understanding the mechanism of nanotriboelectrification.
Highlights
Process would cost several frames to generate more charges, it is time-consuming and less efficient due to charges decay and diffusion
The experiment results indicate that the efficiency to generate the triboelectric charges using TR mode can achieve ~10.53 times higher compared with the contact mode AFM
We demonstrated in-situ manipulation of charging and discharging process on a test sample surface
Summary
Process would cost several frames to generate more charges, it is time-consuming and less efficient due to charges decay and diffusion. By rubbing the sample surface with TR (torsional resonance) mode, the triboelectric charges on the surface of insulating material were generated.
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