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New device that transforms vibrations into electricity

New device that transforms vibrations into electricity

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By Wisse Hettinga



An international research group has engineered a new energy-generating device by combining piezoelectric composites with carbon fiber-reinforced polymer

Energy harvesting involves converting energy from the environment into usable electrical energy and is something crucial for ensuring a .

“Everyday items, from fridges to street lamps, are connected to the internet as part of the Internet of Things (IoT), and many of them are equipped with sensors that collect data,” says Fumio Narita, co-author of the study and professor at Tohoku University’s Graduate School of Environmental Studies. “But these IoT devices need power to function, which is challenging if they are in remote places, or if there are lots of them.”

“We pondered whether a piezoelectric vibration energy harvester (PVEH), harnessing the robustness of CFRP together with a piezoelectric composite, could be a more efficient and durable means of harvesting energy,” says Narita.

The group fabricated the device using a combination of CFRP and potassium sodium niobate (KNN) nanoparticles mixed with epoxy resin. The CFRP served as both an electrode and a reinforcement substrate.

More information at the Tohoku University page on Techxplore.com

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