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Search results for “Carbon Nanotubes”

1,000+ results for "Carbon Nanotubes"

New carbon dioxide emissions model

The new model incorporates data on the carbon cycle, including ocean and forest absorption and release of CO2, to simulate future changes in global climate and carbon dioxide emissions. By reducing emissions by 56% by 2050, global warming would remain under the two-degree threshold until 2100.

SourceMax-Planck-Gesellschaft·JournalClimatic Change·DateAug 2, 2010

Nanotubes pass acid test

Rice researchers have found a breakthrough solvent for carbon nanotubes, untangling long tubes and clearing the way for scalable methods to create strong, lightweight materials. The discovery brings the creation of a highly conductive quantum nanowire closer.

SourceRice University·JournalACS Nano·DateJul 14, 2010

Magnets trump metallics

Researchers at Rice University discovered that strong magnetic fields can transform highly conductive carbon nanotubes into semiconductors. By applying a magnetic field, a band gap opens up and the material becomes an insulator.

SourceRice University·JournalPhysical Review Letters·DateJul 8, 2010

Copper nanowires enable bendable displays and solar cells

Researchers at Duke University have created copper nanowires that are both transparent and conductive, making them ideal for flexible displays and thin-film solar cells. These nanowires are cheaper than silver nanowires and outperform carbon nanotubes, offering a promising solution to the limitations of ITO.

SourceDuke University·JournalAdvanced Materials·DateJun 1, 2010

Outstanding in their field effect

Researchers at Rice University have discovered thin films of nanotubes created with ink-jet printers can be used to make field-effect transistors. The technique allows for the creation of digital electronics on flexible substrates, with potential applications in raincoats and other devices.

SourceRice University·JournalACS Nano·DateMay 25, 2010

Nano parfait a treat for scientists

Scientists at Rice University have made a breakthrough in creating highly purified samples of carbon nanotube species using ultracentrifugation, a technique that can help enable the development of efficient nationwide electrical grids and critical applications in medicine and electronics.

SourceRice University·JournalNature Nanotechnology·DateMay 10, 2010

Ancient leaves help researchers understand future climate

By studying fossil plant remains, scientists can gain insights into past temperatures and environmental conditions. The researchers found that water availability and plant type significantly impact the exchange of carbon isotopes between plants and the atmosphere.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateMay 6, 2010

Carbon nanotubes boost cancer-fighting cells

Researchers at Yale University found that carbon nanotubes cause T cell antigens to cluster in high concentrations, stimulating the body's natural immune response. This breakthrough could improve current adoptive immunotherapy for cancer treatment by increasing T cell proliferation.

SourceYale University·JournalLangmuir·DateApr 20, 2010

Pitt-led international study identifies human enzyme that breaks down potentially toxic nanomaterials, opens door to novel drug delivery

A team of researchers identified a human enzyme, myeloperoxidase, that can break down carbon nanotubes, reducing their unhealthful effects. The study also found that neutrophils can be directed to attack specific nanotubes, opening the door to novel drug delivery and natural biodegradation.

SourceUniversity of Pittsburgh·JournalNature Nanotechnology·DateApr 7, 2010

Gecko's lessons transfer well

A Rice University researcher has found a way to transfer forests of aligned carbon nanotubes from one surface to another in minutes. The technique uses water vapor to weaken chemical bonds between the tubes and the catalyst particles, allowing for precise control over the diameter of the nanotubes

SourceRice University·JournalACS Nano·DateJan 25, 2010

Harnessing the divas of the nanoworld

Researchers have grown virtual Persian carpets of boron nitride nanotubes (BNNTs) on substrates made from simple catalysts, achieving perfect quality. The new technique enables precise control over nanotube growth, opening up possibilities for high-powered electronics and water-repellent surfaces.

SourceMichigan Technological University·JournalChemistry of Materials·DateJan 15, 2010

Breakthrough in industrial-scale nanotube processing

Researchers at Rice University have made a breakthrough in industrial-scale nanotube processing, creating a method to produce pure carbon-nanotube fibers that could lead to advances in materials science and nanoelectronics. The process uses chlorosulfonic acid as a solvent, enabling the efficient production of high-quality nanotubes.

SourceRice University·JournalNature Nanotechnology·DateNov 2, 2009

A recipe for controlling carbon nanotubes

Researchers at Case Western Reserve University have developed a method to control the structure and function of single-walled carbon nanotubes. By varying the composition of a metal catalyst, they can produce semiconducting nanotubes with desired properties, opening up new possibilities for applications such as medicine delivery and en...

SourceCase Western Reserve University·JournalNature Materials·DateSep 20, 2009

Friction force differences could offer a new means for sorting and assembling nanotubes

Researchers have discovered different friction forces when carbon nanotubes slide along their axis versus perpendicular to it, which could provide a new tool for assembling nanotubes into devices. The findings also offer insight into fundamental friction issues and potentially be used to sort nanotubes according to their chirality.

SourceGeorgia Institute of Technology·JournalNature Materials·DateSep 15, 2009

Researchers pinpoint neural nanoblockers in carbon nanotubes

Brown University researchers have discovered that yttrium and nickel, two metal catalysts used to form carbon nanotubes, interfere with critical signaling transactions in neurons. Removing these metals can lead to the development of safe treatments for neurodegenerative diseases such as epilepsy, Parkinson's disease, and paralysis.

SourceBrown University·JournalBiomaterials·DateAug 27, 2009

Nanotubes take flight

Rice University chemist Bob Hauge's team creates bundles of SWNTs using a novel printing process, yielding a high yield of nanotubes. The process could lead to large-scale production of meter-long strands of nanotubes.

SourceRice University·JournalNano Research·DateJul 29, 2009

Video shows nanotube spins as it grows

The study provides the first experimental evidence of how individual carbon atoms are added to growing nanotubes. The rotation proceeds in discrete steps, resembling the halting motion of a mechanical clock's second hand, with approximately 24 steps per rotation.

SourceRice University·JournalNano Letters·DateJul 27, 2009

Reveal the enemy

Researchers have developed a novel biosensor using carbon nanotubes and aptamers to detect Salmonella typhi bacteria at concentrations as low as one bacterium in 5 mL. The technique enables fast, simple, and precise detection of micro-organisms.

SourceWiley·DateJul 20, 2009

Rice researchers unzip the future

Scientists at Rice University have found a way to produce ultrathin, electrically conductive nanoribbons using a room-temperature chemical process. These ribbons are made from graphene, the single-layer form of graphite, and exhibit remarkable strength and conductivity.

SourceRice University·JournalNature·DateApr 15, 2009