North West | Energy, utilities | Technology & innovation
In Russia, new approach to wireless energy transmission developed
3 Feb '16
Researchers working on metamaterials at the St. Petersburg University of IT, Mechanics and Optics (ITMO) in partnership with colleagues at Girikond, a local research institute, have shown that using ceramic dielectrics can lead to developing efficient wireless energy transmission systems, portal Science & Technologies RF reported.
In a lab experiment, the developers are said to have been able to light up a LED bulb at a 20-30cm distance without any wires.
“It’s but pioneering work; but the system does already work for a 20cm distance and 1W capacity,” ITMO research fellow Polina Kapitanova was quoted as saying.
According to the scientist, her colleagues at Girikond have come up with new samples of ceramics with an augmented dielectric permittivity and reduced losses, which is expected to help increase distances for energy transmission and also shift to megahertz range operating frequencies that are not harmful to man.
In 2007, a research team at the Massachusetts Institute of Technology conducted a similar experiment and lit up a 60W bulb at a 2.5m distance by using two copper coils interacting with each other in resonance. At ITMO, the scientists replaced the coils with dielectric ceramic resonators which are said to enable the excitation of magnetic fields with reduced losses of energy.