nano generator by tanveer ahmed ganganalli seminar ppt

NANO GENERATORSHARVESTING ENERGY BY BODY

MOTIONSBY: TANVEER AHMED.I.GANGANALLI

CONTENTS INTRODUCTION TYPES OF NANO GENERATORS WORKING PRINCIPLE APPLICATIONS OF NANOGENERATORS ADVANTAGES DISADVANTAGES FUTURE SCOPES CONCLUSION

INTRODUCTION 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

INTRODUCTIONWHAT IS A NANO GENERATOR ? ? Nanogenerator- converts mechanical

energy into electrical energy based on structured piezoelectric material

TYPES OF NANO GENERATORS 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

TYPES OF NANO GENERATORS Pyroelectric NanogeneratorA pyroelectric nanogenerator is an energy harvesting which utilizes a temperature difference between two ends of the device for driving the diffusion of charge carriers.

TYPES OF NANO GENERATORS 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.

WORKING PRINCIPLE

working principle (case 1)

WORKING PRINCIPLE

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 .

APPLICATIONS OF NANO GENERATORS

Powering pacemakersThis 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

APPLICATIONS OF NANO GENERATORS

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

ADVANTAGES

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

DISADVANTAGES 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

FUTURE SCOPES

Nanogenerator for harvesting mechanical energy; self-powered Nano systems

Solar energy Nano-piezotronics Bio-interfacing, bio-inspired fabrication &

bioengineering Microscopy & functional materials

CONCLUSION 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

REFERENCE 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

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