Schematic diagram of the experimental setup used to transfer energy between two circuits, developed by UAB researchers. Author: Jordi Prat.
Universitat Autònoma de Barcelona researchers have developed a system which efficiently transfers electrical energy between two separate circuits. The system, made with a shell of metamaterials which concentrates the magnetic field, could transmit energy efficiently enough to charge mobile devices without having to place them close to the charging base.
The research was published in the journal Advanced Materials.
Wireless charging of mobile devices is possibly one of the most desired technological milestones. Some devices can already be charged wirelessly by placing the mobile device on top of a charging base. The next step, charging devices without the need of taking them out of one’s pocket, might be just around the corner.
A group of researchers from the Department of Physics of Universitat Autònoma de Barcelona has developed a system which can efficiently transfer electrical energy between two separated circuits thanks to the use of metamaterials. This system is still in the experimental stage, but once it has been perfected and can be applied to mobile devices, it will be able to charge them wirelessly and at a longer distance than currently possible.
Today’s wireless devices make use of induction to charge through a special case adapted to the device and a charging base connected to an electrical socket. When the device is placed on top of the base, this generates a magnetic field which induces an electric current inside the case and, without the need of using any cables, the device is charged. If the device is separated from the base, the energy is not transferred efficiently enough and the battery cannot be charged.
The system created by UAB researchers overcomes these limitations. It is made up of metamaterials which combine layers of ferromagnetic materials, such as iron compounds, and conductor materials such as copper. The metamaterials envelop the emitter and receiver and enable transferring energy between the two, at a distance and with unprecedented efficiency.
With the use of metamaterial crowns researchers were able in the lab to increase the transmission efficiency 35-fold, “and there is much more room for improvement, since theoretically the efficiency can be increased even more if conditions and the design of the experiment are perfected” explains Àlvar Sánchez, director of the research.
“Enveloping the two circuits with metamaterial shells has the same effect as bringing them close together; it’s as if the space between them literally disappears”, states Jordi Prat, lead author of the paper.
Moreover, the materials needed to construct these crowns such as copper and ferrite are easily available. The first experiments conducted with the aim of concentrating static magnetic fields required the use of superconductor metamaterials, unfeasible for everyday uses with mobile devices. “In contrast, low frequency electromagnetic waves – the ones used to transfer energy from one circuit to the other – only need conventional conductors and ferromagnets”, Carles Navau explains.
Learn more: Distance Wireless Charging Enhanced by Magnetic Metamaterials
The Latest on: Distance Wireless Charging
via Google News
The Latest on: Distance Wireless Charging
- Wireless EV Charging Market Forecast to Reach $250 Million by 2025on April 22, 2021 at 7:09 am
The Wireless EV Charging Market is forecast to reach 250 million by 2025 growing at a CAGR of 45 2 from 2020 to 2025 Implementation of strict emission standards growing emphasis on R D activities and ...
- B&W aims to set a new standard with true wireless earphones debuton April 21, 2021 at 5:35 am
British high-end audio brand Bowers & Wilkins has announced its late entry into the true wireless earphones space with the PI7 and PI5 models, but is suggesting that mobile music lovers will find the ...
- Signia Reveals Hearing Aids With Wireless Earbud Technology And Artificial Intelligenceon April 21, 2021 at 5:00 am
Signia is a major hearing aid manufacturer that has developed the Active and Active Pro hearables that bring the advantages offered by true wireless earbuds along with advanced hearing loss ...
- Bowers & Wilkins Finally Unveils Its First Range Of True Wireless Earbuds With Adaptive Noise Cancelationon April 21, 2021 at 1:00 am
Iconic UK audio brand Bowers & Wilkins has finally launched two pairs of true wireless earbuds with ANC built-in. The P17 and P15 bring the True Sound promise from Bowers & Wilkins to the true ...
- VW ID.3 price, range, specs, charging and moreon April 20, 2021 at 11:30 am
Electric vehicle (EV) buyers interested in the VW ID.3 who might have been put off by its price have a cheaper version to choose from. While the five-door hatchback still isn’t available in the U.S.
- Cheap True Wireless earbuds: Anker’s Spirit Dot 2 now £38 OFFon April 20, 2021 at 7:48 am
ANKER’S Spirit Dot 2 earbuds are on sale at Amazon for the next six days. A range of the Anker’s audio products have received discounts, but we like these cheap True Wireless earphones. This ...
- EZGO Announces Strategic Cooperation with University to Jointly Develop Fast-charging Technologies for E-bicycleson April 20, 2021 at 6:26 am
EZGO Technologies Ltd. (Nasdaq: EZGO) (“EZGO” or the “Company”), a leading short-distance transportation solutions provider in China, today announced that it entered into a strategic cooperation ...
- Collaboration speeds mainstream adoption of wireless charging for smartphoneson April 19, 2021 at 2:14 am
Qualcomm Technologies’ 5G mobile reference designs offer turnkey solutions that are designed to aid smartphone OEMs to quickly and cost-effectively implement fast wireless charging on flagship and mid ...
- Outlook on the Wireless Charging Global Market to 2026 - by Technology, Transmission Range, Application and Region - ResearchAndMarkets.comon April 15, 2021 at 3:38 am
Global Industry Trends, Share, Size, Growth, Opportunity and Forecast 2021-2026” report has been added to ResearchAndMarkets.com’s offering. The global wireless charging market exhibited strong growth ...
- Renesas Collaborates with Qualcomm Technologies to Speed Mainstream Adoption of Wireless Charging for Smartphoneson April 14, 2021 at 5:00 am
Renesas collaborates with Qualcomm on 30W wireless charging capabilities for mid-range smartphones powered by the Snapdragon 780G 5G mobile platform ...
via Bing News