The definition of a nanotube is a cylinder-shaped molecule of carbon that is one to two nanometers in diameter.
Facts About Nanotubes
- A nanotube can be any length.
- They have 10 times the tensile strength of steel.
- They are believed to bre the strongest material available for their weight.
- Frequently used to strengthen plastics or to replace silicon in electronic circuits.
- Two soviet scientists first wrote about nanotubes in 1952; however, it was not until 1991 that Sumio Iijima, a Japanese physicist, was credited with the discovery of nanotubes for which he was awarded the Benjamin Franklin Medal in Physics in 2002.
An example of a nanotube is a storage cell used in the construction of display screens.
nanotube definition by American Heritage Dictionary
nanotube - Computer Definition
A carbon molecule that resembles a cylinder made out of chicken wire one to two nanometers in diameter by any number of millimeters in length. Accidentally discovered by a Japanese researcher at NEC in 1990 while making Buckyballs, they have potential use in many applications. With a tensile strength 10 times greater than steel at about one quarter the weight, nanotubes are considered the strongest material for their weight known to mankind. Myriad Applications Currently used to strengthen plastics and carbon fibers, nanotubes have the potential for making ultra-strong fabrics as well as reinforcing structural materials in buildings, cars and airplanes. In the future, nanotubes may replace silicon in electronic circuits, and prototypes of elementary components have been developed. In 1998, IBM and NEC created nanotube transistors, and three years later, IBM created a NOT gate using two nanotube transistors. Nanotubes are already used as storage cells in Nantero's non-volatile memory chips (see NRAM), and they are expected to be used in the construction of sensors and display screens. Single Walled and Multiwalled Single-walled nanotubes (SWNTs) use a single sheath of graphite one atom thick, called "graphene." Multiwalled nanotubes (MWNTs) are either wrapped into multiple layers like a parchment scroll or are constructed of multiple cylinders, one inside the other. See Buckyball, graphene, nanotechnology and NRAM.
nanotube - Science Definition