Power-harvesting nanogenerator impressed by swaying seaweed

In case you’ve ever taken a peek beneath the floor of the ocean, you may have seen seaweed waving backwards and forwards within the present. Scientists from China’s Dalian Maritime College have now utilized that very same movement in an underwater energy-harvesting gadget.

Developed by a workforce led by Minyi Xu and Zhong Lin Wang, the seaweed-inspired software is a sort of triboelectric nanogenerator, or TENG for brief.

TENGs make the most of the triboelectric impact, a phenomenon through which {an electrical} cost accumulates in a single materials after it is separated from one other materials with which it was in touch. It is what’s chargeable for the static cost that happens whenever you’re combing your hair.

On this specific gadget, a skinny layer of porous sponge materials is sandwiched between a few 1.5 by 3-inch (38 by 76-mm) strips fabricated from two completely different polymers. These strips are each coated in a conductive ink, with the sponge creating an air hole between them. The entire thing is sealed with waterproof tape.

When the ensuing TENG bends backwards and forwards in even a comparatively weak underwater present, the 2 polymer strips squeeze via the sponge to intermittently come out and in of contact with each other, producing {an electrical} present within the course of. In wave tank assessments, it was proven that a number of TENGs might be used to repeatedly energy units comparable to marine environmental sensors, eliminating the necessity to carry out battery-changes.

The gadget is demonstrated within the following video, and is described in a paper that was lately printed within the journal ACS Nano.

Seaweed-Like Machine Generates Electrical energy Underwater

Supply: American Chemical Society

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