Wireless Electricity &PiezoelectricityBy : Kush Kumar Sharma & Pranav Gupta

We humans love electricity

On average, a human body consumes about 3,300 watt-hours of energy every day.

But has the potential to produce more than 3 times that amount.

7200 terawatt hour, Energy Consumption of India only in 2008. [1 terawatt = 1 Billion kilowatt]

The Earth contains approximately 1.33×1050 atoms

Early Visions of Power

Benjamin Franklin, Kite lover

Thomas Alva Edison, Direct Current and Bulb lover

Nikola Tesla, Death Ray [Actually known as “Wardenclyffe Tower”]

To fulfill our electricity needs

Batteries

Tower Grid

Lots and Lots of Wires

40 Billion Disposable batteries/year

Even if all the batteries collectively charged together, it won’t last more than 10 minutes to fill world energy consumption.

Bad !!

Bad !!

Bad !!

“What if, we can transmit energy wirelessly?”

Wireless Transmission Ways

• Inductive Coupling • Resonance • Microwaves

Wireless Transmission Ways

2. Electrical Resonance1. Induction Coupling

Resonance

Wireless Transmission Ways

2. Electrical Resonance1. Induction Coupling

Wireless Transmission Ways

3. Microwaves

Piezoelectricity

Lets discuss Piezoelectricity

• We know how to use electricity but from where we going to get it ?

• Some things only works when they are hit on! (My College computers)

• Piezoelectric materials too.

• The first demonstration of the direct piezoelectric effect was in 1880 by the brothers Pierre Curie and Jacques Curie

How it works

• Remember everything in this world is built with nothing but atoms?

• But here, when enough pressure is applied, it breaks this structure and separates electrons and protons on either side.

• Inter-separated state of electrons and protons attract each other (just like : battery) and produces electricity.

Inside Piezo Material

Properties

• Available in abundant quantity.

• Quartz demonstrates this property and is extremely stable.

• The converse of this effect is also, the elongation of such crystals upon the application of an electric current.

Enough of lecture now.

Where can we use it ?

• Dance Floors !

• Your own cell Phone !

• Footpaths !

• Shoes !

• Almost anything which is in motion.

Merging Ideas

Applications

Cars that recharge themselves.

Cellphones start charging as soon as you keep them on table.

• Everyday life

• Medical Internal implants of machines inside human body.

• Mechanical Where using wires is a bad choice.

Robotics.

• Extraction Generating energy from sources which was not explored before. Until now !

He would feel proud.

Questions ?