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Current issue

ELEKTRO 7/2018 was released on June 27th 2018. Its digital version will be available on July 27th 2018.

Topic: Cables, conductors and cable engineering; Tools, equipment and accessories for work with cables

Main Article
Parametrization of circuit models of Li-accumulators for electromobility
Smart Cities (part 3 – volume 1)

SVĚTLO (Light) 3/2018 was released on June 15th 2018. Its digital version will be available on July 17th 2018.

Accessories of lighting installations
Evening with Foxtrot on the Czech heaven

Public lighting
Timeless luminaire for public lighting – Streetlight 11
Control of public lighting

ASU team fuses art, engineering to create stretchable batteries

24.06.2015 | ASU | asunews.asu.edu

Advances could expand capabilities of wearable electronics

Origami, the centuries-old Japanese paper-folding art, has inspired recent designs for flexible energy-storage technology. But energy-storage device architecture based on origami patterns has so far been able to yield batteries that can change only from simple folded to unfolded positions. They can flex, but not actually stretch.

Stretchable battery

Now an Arizona State University research team has overcome the limitation by using a variation of origami, called kirigami, as a design template for batteries that can be stretched to more than 150 percent of their original size and still maintain full functionality. A paper published on June 11 in the research journal Scientific Reports describes how the team developed kirigami-based lithium-ion batteries using a combination of folds and cuts to create patterns that enable a significant increase in stretchability.

The kirigami-based prototype battery was sewn into an elastic wristband that was attached to a smart watch. The battery fully powered the watch and its functions - including playing video - as the band was being stretched. Such stretchable batteries could even be integrated into fabrics - including those used for clothing.

Read more at ASU

Image Credit: Jessica Hochreiter/ASU

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