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Current issue

ELEKTRO 6/2019 was released on June 6th 2019. Its digital version will be available on June 24th 2019.

Topic: Rotating electrical machines, drives and power electronics; Electromobility

Main Article
Hybrid drive of shunting locomotive

SVĚTLO (Light) 3/2019 was released on June 11th 2019. Its digital version will be available on July 17th 2019.

Fairs and exhibitions
Euroluce 2019 by designers eyes
Exhibition Light in architecture 2019
Amper 2019 in capture of sophisticated technologies

Refreshing our memory
Lighting glass from Kamenný pahorek

Energy-Harvesting Yarns Generate Electricity

25.08.2017 | University of Texas at Dallas | www.utdallas.edu

An international research team led by scientists at The University of Texas at Dallas and Hanyang University in South Korea has developed high-tech yarns that generate electricity when they are stretched or twisted.

In a study published in the Aug. 25 issue of the journal Science, researchers describe “twistron” yarns and their possible applications, such as harvesting energy from the motion of ocean waves or from temperature fluctuations. When sewn into a shirt, these yarns served as a self-powered breathing monitor.

Yarn generating electricity

The yarns are constructed from carbon nanotubes, which are hollow cylinders of carbon 10,000 times smaller in diameter than a human hair. The researchers first twist-spun the nanotubes into high-strength, lightweight yarns. To make the yarns highly elastic, they introduced so much twist that the yarns coiled like an over-twisted rubber band. In order to generate electricity, the yarns must be either submerged in or coated with an ionically conducting material, or electrolyte, which can be as simple as a mixture of ordinary table salt and water.

Read more at University of Texas at Dallas

Image Credit: University of Texas at Dallas

-jk-