Nanochemistry inside carbon nanotubes: related news

Comparing apples with oranges - the problem of nanotubes risk assessment

(Nanowerk Spotlight) Despite their name, carbon nanotubes (CNTs) are not made of 100% carbon. Depending on which of the various synthesis techniques is used in their production, CNTs have variable chemistries and physical properties resulting from their different metal catalysts or amorphous carbon coatings. As a result, they may contain large percentages of metal and carbonaceous impurities which will have different environmental and toxicological impacts. In early toxicological studies, researchers obtained confounding results - in some studies nanotubes were toxic; in others, they were not. The apparent contradictions were actually a result of the materials that the researchers were using, not appreciating that 'carbon nanotubes' are really 'carbon nanotubes + metal + amorphous impurities'.

Nanoparticles provide detailed view inside living animals

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Nanochemistry inside carbon nanotubes

(Nanowerk Spotlight) As far as test tubes go, it doesn't get any smaller than a single-walled carbon nanotube (SWCNT). Among the wide range of interesting properties exhibited by SWCNTs is their capacity to encapsulate molecules within their quasi one-dimensional cavity. The confinement offered by the nanotube could serve as a nanoscale test tube to constrain a chemical reaction. This was demonstrated in principle back in 1998, when the coalescence of adjacent fullerenes was observed by transmission electron microscopy ("Encapsulated C60 in carbon nanotubes"). In the following years, scientists have extensively experimented with filling nanotubes with other fullerenes, atoms, molecules and, very recently, with organic molecules. Owing to their large variety with diverse chemical properties, the incorporated organic molecules can tune the

Texas, California Inventors Develop Single-Wall Carbon Nanotube Making Method

ALEXANDRIA, Va., March 21 -- Richard E. Smalley, Daniel T. Colbert, Andrew G. Rinzler, Pavel Nikolaev and Andreas Thess, all from Houston, and Ting Guo of San Diego, have developed a carbon nanotube making method.According to the U.S. Patent & Trademark Office: "This invention provides a method of making single-wall carbon nanotubes by laser vaporizing a mixture of carbon and one or more Group VIII transition metals. Single-wall carbon nanotubes preferentially form in the vapor and the one or more Group VIII transition metals catalyzed growth of the single-wall carbon nanotubes."

Carbon nanotubes for new thermoplastic...

Bayer MaterialScience has cooperated with Clariant Masterbatches on carbon nanotubes for new thermoplastics that impart excellent electrical conductivity and mechanical strength. Bayer MaterialScience will supply Clariant with industrial quantities of high-quality Baytubes carbon nanotubes for the manufacture of development and sales products for compounds and master batches. The carbon nanotubes (CNT), will initially be used in the new CESA® conductive CNT product range. Potential applications for the resultant compounds include electrically conductive machine components and packaging for delicate electronic components such as computer chips.

Carbon nanotubes for new thermoplastics

Bayer MaterialScience has cooperated with Clariant Masterbatches on carbon nanotubes for new thermoplastics that impart excellent electrical conductivity and mechanical strength. Bayer MaterialScience will supply Clariant with industrial quantities of high-quality Baytubes carbon nanotubes for the manufacture of development and sales products for compounds and master batches. The carbon nanotubes (CNT), will initially be used in the new CESA® conductive CNT product range. Potential applications for the resultant compounds include electrically conductive machine components and packaging for delicate electronic components such as computer chips.

Unidym Inc. Announces the First Flight of an Aircraft Using Carbon Nanotubes for Increased Fuselage Strength

Unidym, Inc., a majority-owned subsidiary of Arrowhead Research Corporation (NASDAQ:ARWR), announced today the first flight of an aircraft incorporating Unidym's carbon nanotubes into its airframe for increased strength and flexibility to combat the effects of aerodynamic stress and engine vibration. On April 11th Avalon Aviation's Giles G-200 aircraft flew with Unidym's carbon nanotubes incorporated into its carbon fiber composite engine cowling. The Giles G-200 is a high performance, single engine fully aerobatic carbon composite aircraft.

Carbon nanotube cluster successfully grown

A team of US scientists at Duke University [profile] in the USA say they have brought the commercial utilisation of carbon nanotubes in ICs a step further by using IC-like masking processes to align arrays of nanotubes. "To the best of our knowledge, it is the highest density of aligned, single-wall nanotubes reported," the researchers, led by Professor Jie Liu, wrote in the Journal of the American Chemical Society. Ten nanotubes, a few atoms thick and all facing in the same direction with none of them crossing, were grown in a micron-wide space. "Compared with what other people have done, we have reached a higher density of nanotubes," said Liu. The problem with nanotubes, up to now, has been getting them to grow straight, long enough and sufficiently densely packed to be practical for carrying current.

Book Review of Chemistry and Physics of Carbon, Vol. 30

This book covers a wide range of topics on the chemistry, physics, and applications of carbon and carbon materials. Like previous volumes, the subjects discussed here reveal the multidisciplinary nature of carbon research, as can be seen in the titles of its chapters: (1) “Carbon Activation by Alkaline Hydroxides: Preparation and Reactions, Porosity and Performance: by Linares-Solano et al.; “Template Approaches to Preparing Porous Carbon� by Zhao and co-workers; “Characterization of Carbon Surface Chemistry� by Burg and Cagniant; and “Sorption of Heavy Oils into Carbon Materials� by Inagaki and co-workers. In addition to a standard Table of Contents, there is also a list of the contents of the previous 29 volumes as well as a subject index.

Unidym Inc. Spins off Ensysce Biosciences Inc. to Pursue Medical Therapeutic Applications of Carbon Nanotubes

Unidym, Inc., a majority-owned subsidiary of Arrowhead Research Corporation (NASDAQ:ARWR), announced today the formation of a spin-off company, Ensysce Biosciences Inc., that will focus on research into the medical therapeutic applications of carbon nanotubes. Unidym has licensed its extensive nanotechnology patent portfolio to Ensysce for this field of use and in return holds a significant equity position in Ensysce. The inception of Ensysce stems from the final research interests of the late Dr. Richard Smalley, the 1996 Nobel Laureate for Chemistry from Rice University, who was among the pioneers in considering the potential therapeutic applications for carbon nanotubes. Unidym acquired rights to Dr. Smalley's work in carbon nanotechnology through a corporate merger in April of last year.

Carbon nanotube technology could su..

Just as silicon is the wonder material of the computer age, carbon nanotubes will most likely be the materials responsible for the next evolutionary step in electronics and computing. Their extraordinary properties have identified them as having the potential to revolutionize many technologies. In particular, it is widely believed that carbon nanotubes will take electronic devices to the next level. Many people expect the hugely popular LCD and plasma screens to be replaced by field emission flat screen displays (FED-TV). FED-TV's combine all the best aspects of CRT's, LCD's and plasma TV's into a single package. While the technology exists, manufacturers are at present unable to compete with LCD's and plasma displays on a cost basis. However, carbon nanotubes have the ability to change all that.

3D Parts Integrated on Carbon-nanotube Wafer

National Institute of Advanced Industrial Science and Technology (AIST) manufactured integrated 3D carbon-nanotube components by using single-layer carbon nanotubes. A "carbon-nanotube wafer" developed by densely aligning carbon nanotubes enabled to use microfabrication techniques of lithography.

Carbon nanotubes send electrons for a spin

The crystalline carbon family is the subject of a determined research effort because the unique bonding features of carbon give it some very special properties. For instance, diamond is an extremely rigid semiconductor with a large bandgap. This means that, if you can set the atomic state of a single carbon atom within a diamond crystal, it will remain that way for quite a while as the structural rigidity prevents the atoms from strongly interacting with each other. Another form of carbon, graphite, is a series of loosely connected sheets. Electrons can flow within each sheet, making it a conductor. In addition, a single sheet, called graphene, has the remarkable property that the angular momentum of an orbiting electron is independent of its spin.

Carbon nanotubes for new thermoplastic materials

The excellent electrical conductivity and mechanical strength of Baytubes® carbon nanotubes were the decisive factors leading to a cooperation agreement on thermoplastics between Bayer MaterialScience AG and Clariant Masterbatches (Deutschland) GmbH. Bayer MaterialScience will supply Clariant with industrial quantities of high-quality Baytubes® for the manufacture of development and sales products for compounds and master batches. The carbon nanotubes, CNT for short, will initially be used in the new CESA® conductive CNT product range. Potential applications for the resultant compounds include electrically conductive machine components and packaging for delicate electronic components such as computer chips.

Carbon Nanotubes: Study data from Hunan University update knowledge of carbon nanotubes

(NewsRx.com) -- "Hybrid composites are of special scientific interest for biochemical applications wherein the abilities to modulate the morphology and property of the hybrid material are important. In this paper, the formation of poly-L-lysine/hydroxyapatite/carbon nanotube (PLL/HA/CNT) hybrid nanoparticles is described and a general design strategy for an immunosensing platform has been proposed on the basis of PLL/HA/CNT nanocomposite adsorption of antibodies," scientists in Changsha, People's Republic of China report.

Carbon nanotubes for new thermoplastic materials

Leverkusen, April 3, 2008 - The excellent electrical conductivity and mechanical strength of Baytubes® carbon nanotubes were the decisive factors leading to a cooperation agreement on thermoplastics between Bayer MaterialScience AG [profile] and Clariant Masterbatches (Deutschland) GmbH [profile]. Bayer MaterialScience will supply Clariant with industrial quantities of high-quality Baytubes® for the manufacture of development and sales products for compounds and master batches. The carbon nanotubes, CNT for short, will initially be used in the new CESA® conductive CNT product range. Potential applications for the resultant compounds include electricaly conductive machine components and packaging for delicate electronic components such as computer chips.

Bayer Carbon Nanotubes For New Thermoplastic Materials

(Nanowerk News) The excellent electrical conductivity and mechanical strength of Baytubes® carbon nanotubes were the decisive factors leading to a cooperation agreement on thermoplastics between Bayer MaterialScience AG and Clariant Masterbatches (Deutschland) GmbH. Bayer MaterialScience will supply Clariant with industrial quantities of high-quality Baytubes® for the manufacture of development and sales products for compounds and master batches. The carbon nanotubes, CNT for short, will initially be used in the new CESA® conductive CNT product range. Potential applications for the resultant compounds include electrically conductive machine components and packaging for delicate electronic components such as computer chips.

Silicon Nanotubes May Outpace Carbon Nanotubes for Hydrogen Fuel Cells

While carbon and its extensive uses in various forms like nanotubes, graphene and buckyballs has been receiving scads of research and media time, another element, hydrogen, has made a consistent showing for its use as an alternative fuel. The promise of clean cars and long-lasting batteries has piqued the interest of our electric society. The two together have been shown to hold some incredible promise for powering all sorts of devices.

Spin control: New technique sorts nanotubes by length

(Nanowerk News) Researchers at the National Institute of Standards and Technology (NIST) have reported* a new technique to sort batches of carbon nanotubes by length using high-speed centrifuges. Many potential applications for carbon nanotubes depend on the lengths of these microscopic cylinders, and one of the most important features of the new technique, say the scientists, is that it should be easily scalable to produce industrial quantities of high-quality nanotubes.

Nanotubes outperform copper

nanotubes, carbon nanotubes, interconnect, copper wiring, 45nm process Researchers at the US Rensselaer Polytechnic Institute have determined that carbon nanotube interconnects will outperform copper at the 45nm process node.

Microfluidics Develops Methods For Processing Carbon Nanotubes

Microfluidics, a wholly owned subsidiary of MFIC Corporation, announced methods for processing bulk carbon nanotubes. Microfluidics has devised a methodology to process, deagglomerate, purify and stabilize these processed nanotubes so they can be used in an optimal manner, thus achieving enhanced functionality and performance.

Microfluidics Develops Methods For Processing Carbon Nanotubes

Microfluidics, a wholly owned subsidiary of MFIC Corporation, announced methods for processing bulk carbon nanotubes. Microfluidics has devised a methodology to process, deagglomerate, purify and stabilize these processed nanotubes so they can be used in an optimal manner, thus achieving enhanced functionality and performance.

Microfluidics Develops Methods For Processing Carbon Nanotubes

Microfluidics, a wholly owned subsidiary of MFIC Corporation, announced methods for processing bulk carbon nanotubes. Microfluidics has devised a methodology to process, deagglomerate, purify and stabilize these processed nanotubes so they can be used in an optimal manner, thus achieving enhanced functionality and performance.

Microfluidics Develops Methods For Processing Carbon Nanotubes

Microfluidics, a wholly owned subsidiary of MFIC Corporation, announced methods for processing bulk carbon nanotubes. Microfluidics has devised a methodology to process, deagglomerate, purify and stabilize these processed nanotubes so they can be used in an optimal manner, thus achieving enhanced functionality and performance.

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