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Prepared by :Eng. Doaa Mahmoud

Dr. Islam Eshrah


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Eng. Doaa Mahmoud19 May 2011 2


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Until the mid-1980s pure solid carbon was thoughtto existin only two physical forms, diamond and

graphite.



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Fullerenes are a form of carbon molecule thatis

neither graphite nordiamond. They consist of a

spherical, ellipsoid, or cylindrical arrangement of

dozens of carbon atoms.

A spherical fullerene looks like a soccer ball, and are

often called buckyballs," whereas cylindricalfullerenes are known as "buckytubes" or

"nanotubes.

Eng. Doaa Mahmoud

Fullerenes:

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Eng. Doaa Mahmoud

nanotubes buckyballs

Fullerenes:

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Background leadingup to Carbon

Nanotubes.

Carbon Nanotubes:

An Overview.

Properties of

Carbon Nanotubes.

Potentialapplications of

Carbon Nanotubes.

Electromagnetic

applications.



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I. Single-walled nanotubes(SWNT)

II. Multi-wallednanotubes(MWNT)

Eng. Doaa Mahmoud

In recent years there has been much research into the

development and advancement of carbonnanotubes.

Types of carbonnanotubes:

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Nanotubes.

Carbon Nanotubes:

An Overview.

Properties of

Carbon Nanotubes.


Carbon Nanotubes.

Electromagnetic

applications.



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Nanotubes.

Carbon Nanotubes:

An Overview.

Properties of

Carbon Nanotubes.


Carbon Nanotubes.

Electromagnetic

applications.



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Eng. Doaa Mahmoud

I. MedicineII.MechanicalIII.Electrical circuitsIV.Electromagnetic

a) Cell phones and Wireless Antennas (nanoRadio).

b) Flat panel display screens.

c) Ar tificial muscles.

d) Transistors.

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Nanotubes.

Carbon Nanotubes:

An Overview.

Properties of

Carbon Nanotubes.


Carbon Nanotubes.

Electromagnetic

applications.



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a) Cell phones and Wireless Antennas (nano Radio).



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Eng. Doaa Mahmoud

1. ReceptionAntenna ofnanodimensions detects a radio wave by

vibrating atthe same frequency as the rapidly oscillating

signal.

Nano Radio:

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Eng. Doaa Mahmoud

2. Tunning:Strength of an electric field can be adjustedto letthe nanotube be

tensioned like a guitar string so thatit vibrates only atthe proper

frequency.

Nano Radio:

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Eng. Doaa Mahmoud

3. Am lific ti :A lar e fl f electr ns fr the nan tube tip a plifies the

signal in the presence f a s all ltage fr a batter .

Nan Radio:

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Eng. Doaa Mahmoud

4. Dem ul tiThe ibrating nanotube alters the currentin a a that

retains justthe au io fre uencies ofthe radio a e.

Nano Radio:

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b)F

lat panel display screens.



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Eng. Doaa Mahmoud

c) Ar tificial muscles.

( Laser-driven Nanomotor )

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Eng. Doaa Mahmoud

d) Transistors.

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Eng. Doaa Mahmoud

CARBON NANOTUBES SCIENCE AND APPLICATIONS EDITED

BY M. Meyyappan, NASA Ames Research Center, MoffettField, CA.

physical Properties of Carbon Nanotubes Imperial College Press

203, Electrical Engineering Building, Imprial College, London SW72BT

http://spectrum.ieee.org/semiconductors/optoelectronics/watching-the-

nanotube/0

http://www.photonics.com/Article.aspx?AID=23899&LinkType=Outbrain

http://www.uc.edu/news/NR.aspx?id=9743

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