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Current issue

ELEKTRO 1/202 was released on January 20th 2021. Its digital version will be available on February 10th 2021.

Topic: Electrotechnology; Materials for electrical engineering; Wiring material

Main article
Universal wireless charging of electric cars

SVĚTLO (Light) 6/2020 was released 12.14.2020. Its digital version will be available on 12.18.2020.

Fairs and exhibitions
Looking back at twenty second anniversary of Designblok
Competition of journal Světlo (Light) at FOR ARCH and FOR GARDEN fair 2020

Architectural and scenic lighting
Lighting design in a nutshell – Part 48
Light design for Vivaldianno show
Světlík (skylight) – workshop with light and about light for children

Converting Wi-Fi signals to electricity with new 2-D materials

29. 1. 2019 | MIT | www.mit.edu

Imagine a world where smartphones, laptops, wearables, and other electronics are powered without batteries. Researchers from MIT and elsewhere have taken a step in that direction, with the first fully flexible device that can convert energy from Wi-Fi signals into electricity that could power electronics.

Devices that convert AC electromagnetic waves into DC electricity are known as “rectennas.” The researchers demonstrate a new kind of rectenna, described in a study appearing in Nature today, that uses a flexible radio-frequency (RF) antenna that captures electromagnetic waves — including those carrying Wi-Fi — as AC waveforms.

Electricity from Wi-Fi

The antenna is then connected to a novel device made out of a two-dimensional semiconductor just a few atoms thick. The AC signal travels into the semiconductor, which converts it into a DC voltage that could be used to power electronic circuits or recharge batteries.

Read more at MIT

Image Credit: Christine Daniloff

-jk-