final copy of witricity ---aleem

8/2/2019 Final Copy of Witricity ---Aleem

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SYED ALEEMUDDIN04-09-4006



Transmission of electrical energy or power fromone object to another object without the use of wires is called witricity.

Because of witricity some of the devices wontrequire batteries to operate.

WHAT IS WITRICITY

WITRICITY is nothing but WirelesselecTRICITY.



In 1891,nikola tesala proposed a methodof wireless power transmission ,as it is inradiative mode ,most of the power was

wasted and has less effeciency. In 2005,Dave Gerding coined the term

WITRICITY which is being used today.

Forgotten invention was reborn in 2007 byMIT (massachussets institute of technology) researchers.



Electricity

Magnetism

Energy couplingMagnetic induction

Resonance

Electromagnetism



ELECTRICITYThe flow of electrons (current)through a conductor (like a wire )or charges through theatmosphere (like lightning).

MAGNETISMA fundamental force

of nature ,whichcauses certain typesof materials to attractor repel each other.



Is the production of voltage (inducedcurrent)across a conductor movingthrough a magnetic field

For example,it turns out that anoscillating magnetic field produces an

electric field and an oscillatingelectric field produces an magneticfield.



ELECTROMAGNETISM

A term for the interdependenceof time varying electric andmagnetic field .

ENERGY/POWER COUPLING

It occurs when an energy sourcehas a means of transferringenergy to another object.



The Transfer of Electricity from one place to another withoutwires is known as “Witricity”.

There are witricity power sources(transmitter) and capturedevices(receiver).

Power source provides power to the devices where as capturedevice captured it to work.

Power source and capture devices are specially designed

magnetic resonators.

Magnetic resonators efficiently transfer power over largedistance via the magnetic near-field.



Witricity’s Technology Technology Benefit

Highly resonant strong coupling High efficiency over distance

Energy transfer via magneticnear field

Can penetrate and wrap aroundobstacles

Non radiative energy transfer Safe for living beings and otherenvironmental objects

Flexible geometry Device that can fit into OEM(original equipmentmanufactures)products

Scalable design From mW to kW



Consumer electronics

Industrial

Transportation…



No need of line of sight.No need of powercables and batteries.Does not interfere

with radio waves.



Production of 40 Billion DisposableBatteries / Yr can be reduced



Wireless powertransmission can be

possible only in fewmeters.

Efficiency is onlyabout 40%.



Wireless Power Transfer via Strongly Coupled MagneticResonances André Kurs,Aristeidis Karalis,Robert Moffatt,1J. D. Joannopoulos,Peter Fisher, Marin Soljacˇic´ .

Efficient wireless non-radiative mid-range energy transfer Aristeidis Karalis*, J.D. Joannopoulos, and MarinSoljačić Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Instituteof Technology, 77 Massachusetts Avenue, Cambridge, MA

02139, USA . http://www.witricty.com

http://www.witricity power.com

http://www.sciencemag.org/cgi/data

http://www.witricty.com/

http://www.witricty.com/



GOOD BYE WIRES ….

final copy of witricity ---aleem

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