MOBILE CHARGING BY HEARTBEAT

Presented by : Mehraj-ud-din Wani

Roll no.: 30-ERE-2013

Department of Electrical Engineering

SOET,BGSBU(RAJOURI)

Contents1. Introduction2. Main principle3. Nano Chip4. Working5. Whole Process6. Advantages 7. Disadvantages8. Applications9. Conclusion10. References

Introduction• Scientists from the Georgia Institute of Technology in the

US, made their discovery using zinc oxide nanowires

which produce electricity whenever they are stretched.

• Any body movement, even the pinch of a finger, could be

used to generate power.

Main Principle

• The key to the technology is zinc oxide (ZnO) nanowires. ZnO

nanowires are piezoelectric — they can generate an electric

current when strained or flexed.

Nano Chip• Each chip is made up of millions of nano wires, which are so

small that 500 could fit in a human hair.

• Nanowires and more Nano generators, stacked together

produce enough energy for powering larger electronics, such as

an iPod or charging a cell phone.

Zinc oxide nano wires Nano-generator

Working• Whenever the heart produces beats, the nanochip present

over the chest receives the frequency of vibration of

heartbeat.

• Due to this disturbance in the surroundings of nano chip, the

nano wires inside the chip stresses.

• As a result it produces electricity which is stored inside the

chip for charging gadgets

GLUCOSE

ELECTRICITY

MECHANICAL ENERGY

CHEMICAL ENERGY

NANO GENERATORS

Whole process

Advantages

1. Easy to charge.

2. Power saving.

3. No need of external batteries.

4. Less cost.

5. More efficient.

6. Time consumption.

Disadvantage

1. The problem with humans is that they really don't move

around that much at the kind of frequency needed to

generate a sufficient amount of electricity.

Applications

• In pace makers.

• In iPods and mobile phones

DEVICE USED FOR CHARGING OF MOBILE POHONE

Conclusion• The plan is to use the human heart to power the devices such

as iPods, mobile phones by eliminating batteries.

• This technology will soon be used to recharge mobiles.

• These are very useful for real life human beings.

References1. Z.L. Wang, J.H. Song, Piezoelectric nanogenerators based on zinc

oxide nanowire arrays. Science 312, 242–246 (2006)

2. Z.L. Wang, Nanogenerators for self-powered devices and systems.

Georgia Institute of Technology, Smart Tech digital repository ,2011

3. Z.L. Wang, The new field of nanopiezotronics. Mater. Today 10(5),

20–28 (2007)

4. Xudong Wang, “ Department of Materials Science and Engineering,

University of Wisconsin–Madison, WI 53706, USA ―Piezoelectric

nanogenerators—Harvesting ambient mechanical energy at the

nanometer scale”.

References Cont.5. Jan Holterman,Pim Groen “An introduction to Piezoelectric

Materials and Components”June 2012.

6. B. Y. Sun, M. Qian, and J. Zhang, “Review and prospect on

research for piezoelectric sensors and Dynamometers,”

Journal of Dalian University of Technology, Dalian, vol. 41,

no. 2, 2001, pp. 127-133.

7. L. P. Shi, B. Y. Sun, and X. P. Li, “the Application of the

multi-piezoelectric effect to sensor and actuator,” unpublished.

8. F. X. Zhang and L. K. Wang, “Modern piezoelectricity,” vol. ,

Beijing: Science Press, 2003, pp. 149.