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Article Released Mon-4th-March-2019 09:25 GMT
Contact: Mikiko Tanifuji Institution: National Institute for Materials Science
 Converting vibrations into electricity [Asia Research News 2019 Magazine]

Compact chips could power electronics using natural vibrations.

Charging
Researchers are developing a chip that converts vibrations, from natural sources like gentle air movements or human walking, into electricity that can power sensors or wearable electronics.
Copyright : maridav/123rf
Researchers in Japan are developing a chip that harvests energy from freely available natural motions, such as the vibrations of buildings, gentle air movements, or human walking, and converts it into electricity. This electricity can fully power small electronic devices, such as environmental sensors; it can also charge batteries in wearable gadgets. At the heart of the chip is a miniature polymer puck, which features a double layer of ions locked into position by a chemical reaction. The puck, sandwiched between two electrodes, generates a small current whenever tiny vibrations cyclically force the unit’s layers into frictional contact with each other, a process called triboelectric charging. The ‘ionic liquid polymer’ device is described in the journal Science and Technology of Advanced Materials.

For further information, contact:
Chikako Sano
Institute of Industrial Science
The University of Tokyo
E-mail: chiko727@iis.u-tokyo.ac.jp

For information about STAM, contact:
Mikiko Tanifuji
Science and Technology of Advanced Materials
National Institute for Materials Science
E-mail: Tanifuji.Mikiko@nims.go.jp

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