nanotube


Also found in: Dictionary, Thesaurus, Medical, Financial, Wikipedia.

nanotube

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.


The Chicken Wire Tube
At the molecular level, a single-walled carbon nanotube looks a lot like rolled up chicken wire with hexagonal cells. The number of applications that may ultimately benefit from carbon nanotubes is enormous.
References in periodicals archive ?
Coating the thin layer of carbon nanotube sheets on the solar tubes can be challenging.
The IBM team has tested nanotube transistors with that design, but so far it hasn't found a way to position the nanotubes closely enough together, because existing chip technology can't work at that scale.
Chiral (2, 1) GaN Nanotubes. The band structure plot of chiral (2, 1) type pristine GaN nanotube shows a very small indirect band gap of about 0.072 eV, shown in Figure 4.
We present herein new evidence that adhesion between the surface and the nanotube-modified AFM tip can significantly alter the mechanical behavior of the nanotube [36].
"To make a uniform and consistent carbon nanotube, you need high-temperature reactors with exceptional temperature control" Jansen explains.
Summary: This statistic depicts the total carbon nanotubes market demand in 2017 and a forecast during the period 2018 to 2025
"The lithium dopes the nanotube film, which turns from black to red, and the film, in turn, diffuses the lithium ions," he added.
Recent experiments by other labs showed strong evidence for the formation of nanotube ice and prompted the researchers to build density functional theory models to analyze the forces responsible.
The carbon nanotube lines have high toughness, good pressure-sensitive properties, and excellent electrical and thermal properties [7].
Oh et al., "Carbon nanotube (CNT)-based composites as electrode material for rechargeable Li-ion batteries," Composites Science and Technology, vol.
In order to align the direction of carbon nanotubes with the direction of heat removal, Fujitsu Laboratories developed a carbon nanotube manufacturing process in which the temperature and pressure for nanotube synthesis were precisely controlled with respect to the metal-particle catalyst, and the position of the feedstock gas inlet was adjusted relative to the substrate so that a dense, uniform array of carbon nanotubes grew perpendicularly.