Secab Institute of Engineering and Technology,Vijaypur

1. HARVESTING ENERGY BY BODY
MOTIONS
BY: TANVEER
AHMED.I.GANGANALLI

2.  INTRODUCTION
 TYPES OF NANO GENERATORS
 WORKING PRINCIPLE
 APPLICATIONS OF NANOGENERATORS
 ADVANTAGES
 DISADVANTAGES
 FUTURE SCOPES
 CONCLUSION

3.  The nanogenerator project has been
developing and expanding since 2001 after
the idea was conceived by Dr.Zong Lin
Wang. He invented a way to produce free
electric energy by harnessing the piezoelectric
effect, some material have on micro scale
simply by shaking, vibrating .Wang was able
to produce an electric charge

4. WHAT IS A NANO GENERATOR ? ?
 Nanogenerator- converts mechanical energy
into electrical energy based on structured
piezoelectric material

5.  Piezoelectric Nanogenerator:
A piezoelectric Nanogenerator is an energy
harvesting device converting the external kinetic
energy into an electrical energy based on the
energy conversion by Nano-structured
piezoelectric material

6.  Pyroelectric Nanogenerator
A pyroelectric nanogenerator is an energy
harvesting which utilizes a temperature
difference between two ends of the device for
driving the diffusion of charge carriers.

7.  Triboelectric Nanogenerator:
A triboelectric Nanogenerator is an energy
harvesting device that converts the external
mechanical energy into electricity by a
conjunction of triboelectric effect and electrostatic
induction.

8. working principle (case 1)

9.  The working principle for the first case is
explained by a vertically grown nanowire
subjected to the laterally moving tip. When a
piezoelectric structure is subjected to the external
force by the moving tip, the deformation occurs
throughout the structure. The piezoelectric effect
will create the electrical field inside the
nanostructure
As a result, the tip of the nanowire will
have an electrical potential distribution on its surface,
while the bottom of the nanowire is neutralized since
it is grounded .

10.  Powering pacemakers
This technology could facilitate the use of self-
powered flexible energy harvesters , not only
prolonging the life time of cardiac pacemakers
but also realizing real-time heart monitoring

11.  Harvesting energy from human body motion
Since there is abundant mechanical energy
generated on human bodies in people's everyday
life, we can make use of the triboelectric
nanogenerator to convert this amount of
mechanical energy into electricity, for charging
portable electronics and biomedical applications.
This will help to greatly improve the convenience
of people's life and expand the application of the
personal electronics

12.  Piezoelectric and triboelectric Nanogenerator have
enough output suitable for self powered system
 Triboelectric Nanogenerator the output is good
and don’t need poling. Both organic and inorganic
material can be used based on triboelectric
behaviour
 The piezoelectric Nano generators could convert
[mechanical movement, blood pressure, vibration
energy] into electric energy for self powering Nano
devices
 Nano generators can harvest waste energy from
environment and thus being a sustainable energy
source

13.  Amount of power generated by Nano
generators is comparatively small
 Shelf-life means how long these material last,
in other words organic materials decay very
quickly
 Nano generators are limited to small duty cycle

14.  Nanogenerator for harvesting mechanical
energy; self-powered Nano systems
 Solar energy
 Nano-piezotronics
 Bio-interfacing, bio-inspired fabrication &
bioengineering
 Microscopy & functional materials

15.  Miniaturization is the beauty of
Nanogenerator.
 Generation of power needs to be updated with
inventions.
 Further researches in this field can save the
non-renewable source of energy
 The invention of Nano generators may prove to
be the start of new era in the history of man
kind

16.  S.P. Beeby, M.J. Tudor, N.M. White, Measurement
Science and Engineering 17 (2006) 17
 Z.L. Wang, Scientific American (2008) 82
 J.A. Paradiso, T. Starner, IEEE Pervasive Computing 4
(2005) 18
 P.D. Mitcheson, E.M. Yeatman, G.K. Rao, A.S. Holmes,
T.C. Green, in: Proceedings of the IEEE, vol. 96, 2009,
1457
 Z.L. Wang, Advanced Materials 24 (2011) 279

17. THANKS FOR
YOUR ATTENTION