Electrodeless Nanogenerator for Dust Recover

Abstract

Triboelectric nanogenerator (TENG) has the advantages of low cost, low weight, simple structure, and high efficiency. It is a promising low‐frequency mechanical energy capture technology, which shows great potential in dealing with energy and environmental crisis and promoting new electronic products. TENGs have demonstrated irreplaceable design freedom over traditional electronic devices, including its ability to work independently of electrodes. In fact, the displacement current is an unreal current, it can work independently without electrodes. Moreover, due to the lack of “shielding effect” of the electrode, the surface potential can be larger than devices worked with electrodes. Here, based on TENG's high‐voltage characteristic without electrode, the application of dust removal is explored, and a kind of electrodeless polyethylene triboelectric blackboard eraser was demonstrated as an example, which can effectively restrain the flying of chalk dust (limit the dust diffusion within 0.648 m). The electrostatic charge decayed blackboard eraser can be recharged by the electrodeless TENG without requirement of electrodes establishment. In fact, contact electrification may happen frequently in natural environment, and further design may be achieved without the limitation of electrodes.

Sm-Doped PIN-PMN-PT Transparent Ceramics with High Curie Temperature, Good Piezoelectricity, and Excellent Electro-Optical Properties

“…Moreover, when the external force was removed, negative voltage signals were generated because of the volume expansion of the sample. One can conclude that PIN-PMN-PT transparent ceramics are capable of converting mechanical energy into electric energy, which can be applied for energy harvesting. , …”

Recent Advances in Flexible Nanogenerators for Microphone and Loudspeaker Applications

“…This process transforms mechanical energy into electrical energy. Different forms of TENG can be constructed based on this theory and depending on the particular application. , As seen in Figure , there are four different types of triboelectric collecting device geometries that may be used for this. These techniques play a significant role in supplying microscale power to compact and intelligent electronic devices, and making use of them might serve as the foundation for large-scale energy harvesting .…”

Self-Powered Electronic Skin for Remote Human–Machine Synchronization

“…At present, many research groups at home and abroad have already started research on energy harvesting and signal sensing of nanogenerators, especially in wearable flexible sensors. − By changing the structure and composition of nanogenerators, the signal monitoring of tactile pressure, physiological state, and physical environment can be realized. Under different monitoring indexes, nanogenerators can realize different state monitoring by using the particularity of their structures.…”