what is a nanotube
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- Define nanotube. nanotube synonyms, nanotube pronunciation, nanotube translation, English dictionary definition of nanotube. n. A hollow cylindrical or toroidal tube measuring nanometers in diameter, composed of atoms of a single element, typically carbon. n a cylindrical...
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Microtubule Microtubules are one of the cytoskeletal filament systems in eukaryotic cells. The microtubule cytoskeleton is involved in the transport of material within cells, carried out by motor proteins that move on the surface of the microtubule. Microtubules (micro- + tube + -ule) are a component of the cytoskeleton, found throughout the cytoplasm. These tubular polymers of tubulin can grow as long as 50 micrometres and are highly dynamic. The outer diameter of a microtubule is about 24 nm while the inner diameter is about 12 nm.
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- Look up nano-in Wiktionary, the free dictionary. Nano- (symbol n) is a unit prefix meaning one billionth. Used primarily with the metric system, this prefix denotes a factor of 10 −9 or 0.000000001.hen used as a prefix for something other than a unit of measure (as in nanoscience), nano refers to nanotechnology, or on a scale of nanometres. See nanoscopic scale.
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- Nanotechnology is the creation of functional materials, devices, and through control of matter on the (1 to 100+ nm) length scale and the exploitation of novel properties and phenomena developed at that scale. Source. The art of manipulating materials on an atomic or scale especially to build microscopic devices.
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- Look up nanosecond in Wiktionary, the free dictionary. A nanosecond (ns) is a SI unit of time equal to one billionth of a second (10−9 or 1/1,000,000,000 s). One nanosecond is to one second as one second is to 31.69 years. The word nanosecond is formed by the prefix nano and the unit second. Its symbol is ns.
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nanometer A nanometer is a unit of spatial measurement that is 10-9 meter, or one billionth of a meter. It is commonly used in nanotechnology, the building of extremely small machines. This was last updated in September 2005.
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- A nanosecond (ns) is an SI unit of time equal to one billionth of a second (10 −9 or 1 / 1,000,000,000 s). One nanosecond is to one second as one second is to 31.71 years.
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Nanotechnology Nanotechnology, in the context of computer science, is a type of engineering geared toward building electronic components and devices measured in nanometers, which are extremely tiny in size and structure.
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Buckyballs and Nanotubes Researchers have spent the last 15 years finding uses for buckyballs and nanotubes. Today, nanotubes are used as the stylus in atomic force microscopes (AFMs). Nanotubes are also being used as filters to separate extremely small objects from liquids or the air.
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Nanotechnology Products Nanotechnology is influencing the development of a wide variety of very diverse fields; among these are electronics, biotechnology, and consumer applications. From tennis balls to bandages to palm pilots, nanotechnology is making a significant impact on the jobs we work at and the products that we enjoy.
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Microtubule Microtubules are long, hollow cylinders made up of polymerised α- and β- tubulin dimers. The α and β-tubulin subunits are approximately 50% identical at the amino acid level, and each have a molecular weight of approximately 50 kDa.hese tubular polymers of tubulin can grow as long as 50 micrometres and are highly dynamic. The outer diameter of a microtubule is about 24 nm while the inner diameter is about 12 nm. They are found in eukaryotic cells and are formed by the polymerization of a dimer of two globular proteins, alpha and beta tubulin.
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Nanotechnology Defined - What is Nanotechnology All About Nanotechnology Defined. Nanotechnology can perhaps be best defined as the ability to engineer new attributes through controlling features at a very small scale-at or around the scale of a nanometre. One nanometre is a billionth of a metre; or about 1/80,000 the width of a human hair.
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- Boron nitride has the formula (BN)n, (n is a very large number, but the empirical formula is BN). It forms cubic and hexagonal structures which correspond (analogous) to carbon in the form of diamond and graphite respectively.exagonal boron nitride can be made in single layers and can also be formed into nanotubes. Bundles of boron nanotubes are used for wire sleeving. Boron nanotubes are used as a catalyst support, as in the case of carbon nanotubes. Boron nitride is NOT an electron deficient compound like semi-conductors.
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- Nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1, significantly larger than for any other material. These cylindrical carbon molecules have unusual properties, which are valuable for nanotechnology, electronics, optics and other fields of materials science and technology.
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femtosecond Part of the Nanotechnology glossary: (This definition follows U.S. usage in which a billion is a thousand million and a trillion is a 1 followed by 12 zeros.). A nanosecond (ns or nsec) is one billionth (10 -9) of a second and is a common measurement of read or write access time to random access memory (RAM).
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- Nanotubes have turned up in the lungs of asthmatic children in Paris – although their source and their effects on health remain unclear. Seagrass gardens are needed to cap the carbon bomb in the oceansMillennia's worth of buried carbon is escaping from damaged seagrass meadows.
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- The result is a chemical called the carbon nanotube that is absorbed by the process of converting a solid oxide into a chemical that is specific to the cellular nerve. —
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Multiple exciton generation Graphene, which is closely related to nanotubes, is another material in which multiple exciton generation has been observed. Double-exciton generation has additionally been observed in organic pentacene derivatives through singlet exciton fission with extremely high quantum efficiency.raphene, which is closely related to nanotubes, is another material in which multiple exciton generation has been observed. Double-exciton generation has additionally been observed in organic pentacene derivatives through singlet exciton fission with extremely high quantum efficiency.
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- Nanoparticles range in size from about 100 nm down to about 1 nm. They are typically the size of small molecules, and far too small to see with a microscope. Working with nanoparticles is called nanotechnology.
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Ansel Meaning What does Gustav mean, popularity, numerology and more. The name Gustav is of German and Scandinavian origin. The meaning of Gustav is staff of the gods. It is also of French origin, where its meaning is royal staff.
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- Now that carbon-fiber composites have migrated from the world of blank-check motorsports to semiaffordable production cars such as the BMW i3 and Chevrolet Corvette, what’s next? Is there another breakthrough material that will reset our expectations for strength, stiffness, and weight the way carbon fiber has? Carbon nanotubes will. Imagine a tiny pipe with walls made of carbon atoms linked neatly together. The “nano” part of the name comes from nanometer, meaning one-billionth of a meter. Each carbon nanotube is only one nanometer in diameter, which is 2000 times smaller than a carbon-fiber filament. But more significant than size are the dramatic differences in crystal structure and physical properties between carbon nanotubes and carbon fiber.
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Nanometre The nanometre is often used to express dimensions on an atomic scale: the diameter of a helium atom, for example, is about 0.1 nm, and that of a ribosome is about 20 nm.
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Graphene An aerogel made of graphene layers separated by carbon nanotubes was measured at 0.16 milligrams per cubic centimeter. A solution of graphene and carbon nanotubes in a mold is freeze dried to dehydrate the solution, leaving the aerogel.The material has superior elasticity and absorption.raphene is the only form of carbon (or solid material) in which every atom is available for chemical reaction from two sides (due to the 2D structure). Atoms at the edges of a graphene sheet have special chemical reactivity.
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nanoscale nanoscale. At nanometer size. Any device only a few nanometers in size is nanoscale. Nanotechnology is said to comprise elements less than 100 nanometers in size (100 nm).See nanotechnology and nanometer.anoscale. At nanometer size. Any device only a few nanometers in size is nanoscale. Nanotechnology is said to comprise elements less than 100 nanometers in size (100 nm).
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- Any device only a few nanometers in size is nanoscale. Nanotechnology is said to comprise elements less than 100 nanometers in size (100 nm). See nanotechnology and nanometer.
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Nanotechnology What Are Carbon Nanotubes? Carbon nanotubes (CNTs) are best described as seamless cylindrical hollow fibers, comprised of a single sheet of pure graphite (a hexagonal lattice of carbon, similar to a chain link fence), having a diameter of 0.7 to 50 nanometers with lengths generally in the range of 10’s of microns.