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carbon nanotubes


ABSTRACT


Carbon nanotubes (CNTs; also known as buckytubes) are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1,[1] which is significantly larger than any other material. These cylindrical carbon molecules have novel properties which make them potentially useful in many applications in nanotechnology, electronics, optics, and other fields of materials science, as well as potential uses in architectural fields. They exhibit extraordinary strength and unique electrical properties, and are efficient thermal conductors.

Nanotubes are members of the fullerene structural family, which also includes the spherical buckyballs. The ends of a nanotube may be capped with a hemisphere of the buckyball structure. Their name is derived from their size, since the diameter of a nanotube is on the order of a few nanometers (approximately 1/50,000th of the width of a human hair), while they can be up to 18 centimeters in length (as of 2010).[1] Nanotubes are categorized as single-walled nanotubes (SWNTs) and multi-walled nanotubes (MWNTs).

REFERED BY wikipedia
Carbon nanotubes are one of the most commonly used building blocks in nanotechnology. The most surprising feature of them includes their electrical, mechanical, optical, kinetic characteristics which forms the base of future .

here is the page link to get the seminar ppt on 'carbon nanotubes' which i had to prepare during my seminar last semester. if these slides are helpfull to you, let me know, i will be uploading the seminar hard copy also.
best of luck!

link: http://seminarprojects.kreviewitem.php?id=11

Presented By
Amarjit Biswas

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WORLD OF NANO-TECHNOLOGY

A Nano-Particle defines a small object that behaves as a whole unit in terms of transport and properties.
Nanotechnology is in fact a recasting of straightforward materials science.
Nanotechnology, is the study of the controlling of matter on an atomic and molecular scale, dealing with structures of the size 100 nanometers or smaller in at least one dimension.