INTEGRAL UNIVERSITY

Seminar on POLYTRONICSPOLYTRONICS

By

MD AZHARUDDIN B.Tech Third Year , Dept. of ECE

CONTENTSCONTENTSIntroduction ….What is polytronics ….Need of polytronics ….What is a polymer ….History of polytronics ….How does a polymer conducts ….Printed Electronic Methods ….Applications ….Example ….Advantages v/s disadvantages of Polymer Electronics ….Conclusion….Video….References…….

INTRODUCTIONINTRODUCTION

With the invention…transistors …early half of the nineteenth century, the field of electronics…innumerable changes…tremendous impact on the life of the common man. Be it education, entertainment or healthcare, there is possibly no field where electronics has not made an impact.

The entire concept of electronics is based…study of materials called semi-conductors.

Silicon is one such material…widely used…manufacture of electronic circuits. However the use of silicon has various disadvantages…led researchers and

scientists all over the world…look for other alternatives.For long, it was believed plastics were materials with poor conductivity.Researchers…proved that when plastics are combined with other substances in

proper chemical compositions they can behave as good conductors of electricity.

WHAT IS POLYTRONICSWHAT IS POLYTRONICS ? ?

Polymer electronics Influence of plastic in electronics

All-new field in which plastics or ‘conjugated polymers’ are exclusively used in the manufacture of electronic products.

Emerging technology…focuses…development of electronic devices incorporating ..electrically conductive and semi conductive organic materials, especially organic polymers.

Offers the prospect…advanced electronics platform using new materials, processes & electronic devices.

NEED OF POLYTRONICS…NEED OF POLYTRONICS…

The widespread use of silicon…electronic goods…large number of disadvantages some are,

Production of silicon embedded circuits involves a huge investment. These circuits also consume more power. Moreover since silicon chips are not flexible, the products,

which..use, are not easily portable.

By using polytronics these limitations can overcome.

Polytronic devices…manufactured at a fraction of the cost involved in making conventional chips.

Also Polytronics seems to be the best answer to the growing manage of electronic wastes.

WhyWhyWhenWhen

HowHow

WHAT IS A POLYMERWHAT IS A POLYMER(poly- ’many’) + (mer- ’parts’)

Large molecule/macromolecule, composed…many repeated subunits.

Because…broad range of properties both synthetic & natural polymers play an essential and ubiquitous role…everyday life.

Formed because…double and triple bonds between monomer to form a rigid structure and unique chemical & physical characteristics.

Organic polymers…chains of carbon atoms combined with hydrogen atoms.

It is a conjugated chain comprise…alternating single and double bonds between the carbon atoms.

HISTORYHISTORY

Hermann Staudinger in the year 1920, was first to propose the concept, the sense we use today

It led to the Nobel prize in 1953 for his work which is at the base of all science of macromolecules.

PRINTED ELECTRONICS METHODSFlexo printing: A high pressure method that is especially well applicable to print on

plastic substrates.

Offset printing: A flat printing technique that makes a high resolution possible.

Gravure printing: A low pressure printing method that makes high volumes and the use of organic dissolvent possible.

Rotary screen printing: A method that allows to print in thick layers.

HOW DOES A POLYMER CONDUCTHOW DOES A POLYMER CONDUCT

By simply obeying ohm’s law.

Ohm’s law define conductivity in polymers & ceramics as Free flow of ions/e-s.

……WorkingWorking

APPLICATIONSAPPLICATIONS

EXAMPLE-OFETEXAMPLE-OFETThe basis…logic circuit is a transistor, which is the element that controls

electrical currents by turning on & off.

ADVANTAGESManufacture is relative

simple and inexpensive equipment at low cost.

Light weighted and flexible, very durable under stress and flex can be easily applied over a large surface area.

Freedom of choice of their chemical composition

Adaptable in various ways because of printing methods that can be adjusted to current requirements quickly (printed electronics).

DISADVANTAGESDue to their intrinsic physical

properties (i.e. limited mobility of charge carriers), the performance of polymer electronic products lacks the speed of its silicon counterpart.

Research is still on going to increase performance for more complex functionality.

To be able to improve performance one should be able to distinguish between problems introduced during preparation, intrinsic material properties, and device characteristics

ADVANTAGES AND DISADVANTAGES OF ADVANTAGES AND DISADVANTAGES OF POLYMER ELECTRONICSPOLYMER ELECTRONICS

CONCLUSIONCONCLUSION

With efficient use and reuse…electronic waste.

Products are built…sub stream of the society, to build a better society in which each and every individual has access to the features that it has to offer.

In short…field that offers tremendous opportunities for young and budding engineers, field that is going to revolutionize the way in which we live.

I would again like to emphasize the fact that Polytronics is the next BIG THING.

VIDEO

REFERENCES…….REFERENCES…….

http://www.nptel.ac.in/courses/112108150/pdf/Web_Pages/WEBP_M14.pdf

http://www.theage.com/au-technology

www.plastics.org

http://www.AmericanPlasticsCouncil.org

http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=10642

https://www.youtube.com/watch?v=bUq0NOSbhrI