Flexible, ultra-wideband acoustic device for ultrasound energy harvesting and passive wireless sensing

Dielectric-Enhanced, High-Sensitivity, Wide-Bandwidth, and Moisture-Resistant Noncontact Triboelectric Sensor for Vibration Signal Acquisition

“…Triboelectric nanogenerator (TENG) is a promising technology for energy harvesting and self-powered sensing based on the coupling effect of friction electrification and electrostatic induction. − Recently, triboelectric sensors (TESs) used for vibration signal acquisition have been investigated a lot due to their simple structure and low-cost fabrication. − However, TESs operated in mechanical vibration signal acquisition, contact, and separation periodically lead to wear of the triboelectric layer inevitably. Noncontact TES works without mechanical contact, showing a great advantage in self-powered sensing signal acquisition. − …”

Nanopillar- and Nanocone-Structured SrTiO3/PDMS Films for Triboelectric Nanogenerators

“…The AAO-directed method has been developed for research for the nanopatterning template because of the facile fabrication and easily available, controllable structural parameters such as diameter, aspect ratio, and period. A variety of nanostructures, including nanorods, nanopillars, nanocones, and nanotubes, can be obtained by the AAO template with a high resolution and reproducibility. − The second strategy to enhance the output performance of the TENG is selecting suitable materials for the friction layer. The dielectric performance of the friction layer material is essential to concern, which exhibits the charge storage ability, and it dramatically impacts the output power and energy conversion efficiency .…”