A new wireless energy transfer device can charge any device without using cables

August 20, 2014
José Sánchez-Dehesa and Jorge Carbonell

Researchers at the Universitat Politècnica de València (UPV) have designed a new device for wireless energy transfer that will, for example, charge mobile phones or laptops without needing cables.

The system, patented by the UPV, is based on the use of resonators designed with radial photonic crystals; one of them would act as an energy transmitter and the other would be set on the device that needed to be charged. Between them a phenomena known as resonant coupling is produced, which is what finally produces the charging or recharging of the equipment.

"This phenomena is produced when a resonant object is moved closer to a second resonant element and both resonance frequencies are equal or quite similar. This physical proximity produces an energy coupling from the first device, that acts as the source, to the second one, that acts as the charge," says José Sánchez-Dehesa, researcher at the Wave Phenomena Group of the Universitat Politècnica de València.

The could also be used as a power supply system for equipment such as keyboards and wireless mice, speakers, etc. Besides consumer electronics, it could also be used in an industrial environment as for robots or guided vehicles, and bioelectric devices (cardiac pacemakers, defibrillators, etc.)

The UPV researchers' study was released last June in the Annals of Physics magazine. After the first laboratory simulations and calculations of the system's performance, the engineers of the Wave Phenomena Group are now working on the development of the first prototype.

Technology implementation


With regard to the implementation of these devices, UPV researchers say that, "although it may seem futuristic, it is foreseeable that they become universal due to the spread of charging infrastructure in many settings. This technology could follow the same path as WIFI networks," explains Jorge Carbonell, researcher at the Wave Phenomena Group.

Explore further: Key factors for wireless power transfer

More information: Ana Díaz-Rubio, Jorge Carbonell, José Sánchez-Dehesa. "Wireless energy transfer between anisotropic metamaterials shells." Annals of Physics. Volume 345, June 2014, Pages 55–62. DOI: 10.1016/j.aop.2014.03.005

Related Stories

Key factors for wireless power transfer

July 31, 2013

What happens to a resonant wireless power transfer system in the presence of complex electromagnetic environments, such as metal plates? A team of researchers explored the influences at play in this type of situation, and ...

Researchers design a new structure that absorbs all sound

May 30, 2014

A new step toward the perfect acoustic absorber. Researchers of the Universitat Politècnica de València at the Campus de Gandia have designed and experimentally evaluated in the laboratory a new structure made of conventional ...

Qi wireless charging standard offers more design freedom

August 1, 2014

Wireless charging is getting a new technology treatment which offers more design freedom. The Wireless Power Consortium's advance in its Qi wireless charging standard means that phones and chargers will no longer need to ...

Researchers develop new wireless power transfer technique

August 4, 2014

A wireless power transfer technique that uses miniaturised receivers suitable for real-world use has been demonstrated by researchers in Korea. Hyoungjun Kim and Chulhun Seo from Soongsil University used a metamaterial slab ...

Recommended for you

AI machine achieves IQ test score of young child

October 6, 2015

Some people might find it enough reason to worry; others, enough reason to be upbeat about what we can achieve in computer science; all await the next chapters in artificial intelligence to see what more a machine can do ...

Dutch create world's largest man-made wave

October 5, 2015

In a country where most people live below sea level, studying the oceans is a matter of survival. Now Dutch scientists have created the world's biggest man-made wave in a bid to prepare for the worst.


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.