Energy

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Magnetic field Concentrator and Amplifier: Wireless energy transfer

IP Status: PCT Patent application (26/06/2013)  European Patent application  (priority date: 27/07/2012)

Description: While magnetic shielding is a rather controlled technology, magnetic concentration still lacked satisficing solution in spite of numerous potential industrial applications.  A new passive device has been developed to concentrate / amplify magnetic fields using only conventional ferromagnetic and superconducting materials.  Applications in microelectronic, magnetic field sensing or magnetic resonance imagery are clearly in scope.

Department: Superconductivity Group

Contact: Carlos Raga

Piezoelectric nanogenerators with graphene and nanowires

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 IP Status: Priority patent application 10.7.2013

Description: Current metodologies like graphene/PEN (polyethylene naphthalate) stacked as an electrode can improve the efficiency bring about two associated problems: first, and mainly, the low density (~6%) of nanowires that contact the top electrode, and second, the existence of wrinkles on the graphene transferred to the PEN. These two problems result in a large contact resistance. On the other hand, graphene grown by chemical vapor deposition (CVD) impoverishes the properties of these devices by lowering the conductance and increasing their variability.

Department: Reliability of electron device and circuits

Contact: Carlos Raga

 

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Device to enhance Wireless Power transmission

IP Status: EP Priority date : 14/07/2014 - PCT 26/06/2013 (Priority Date: 27/07/2012)

Descripció: Wireless power transfer (WPT) is in general achieved using different strategies. One of the most relevant approaches is based on resonant/non-resonant magnetic induction between distant coils. In this case one coil (emitter) is connected to an AC power generator, creating an AC magnetic field. This field induces a current to a second coil (receiver), which then can be used to power a device or can be stored.
Generally, the distance at which can be transferred a useful amount of power is very small (it is known that almost no power is received at a distance of just three times the diameter of the emitting coil).

Departament: Superconductivity group UAB

Contacte: Carlos Raga