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Carbon nanotubes could act as an efficient music speaker

While carbon nanotubes are widely praised for their strength and electrical properties, no one has thoroughly investigated their acoustic properties, until now. A team of Chinese researchers has found that zapping sheets of carbon nanotubes with an electric current causes the nanotubes to emit sound.

Nanotubes Deemed Different From Carbon

Sensing confusion among the nanotech industry, the Environmental Protection Agency has clarified its position on carbon nanotubes, saying they are chemically distinct from graphite and other forms of carbon. The move serves as a reminder that carbon nanotubes are considered new substances under the Toxic Substances Control Act (TSCA).

Seeing Nanotubes Targeting Tumors In Vivo

Carbon nanotubes have significant potential for delivering both imaging and therapeutic agents to tumors, but there is still a need to better quantify how well these rolled-up sheets of graphite can target tumors. Now, thanks to the development of a microscope capable of measuring Raman spectroscopic signals from living mice, researchers have a noninvasive tool to study where carbon nanotubes travel once they are injected into the blood stream.

Seeing nanotubes targeting tumors in vivo

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Carbon nanotubes improve protein array detection limits

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Carbon nanotubes detect lung cancer markers in the breath

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Barack Obama in nanotubes

A nanobama structure of U.S. President-elect Barack Obama's image, each made with approximately 150 million tiny carbon nanotubes, is photographed using optical and electron microscopes by University of Michigan Mechanical Engineering Department in this image released to Reuters November 10, 2008. The image, based on an original drawing by Shepard Fairey, is made of approximately 150 million tiny carbon nanotubes, which is about the number of Americans who voted on November 4, according to John Hart at University of Michigan.(Xinhua/Reuters Photo)

Samsung Forges E-Paper Out of Nanotubes

Samsung Electronics and Unidym have demonstrated the world's first carbon nanotube-based color active matrix electrophoretic display (EPD) e-paper. Carbon nanotubes have extraordinary electrical, thermal, and mechanical properties. The EPD has distinct advantages over today's standard flat panel displays. They have very low power consumption and are highly readable even in direct sunlight. Because the EPD uses carbon nanotubes, applications can include e-paper and displays that are very thin. Samsung and Unidym showed off a 14.3-inch display, but the technology can be used for touch screens, point-of-sale terminals, games, portable computers, cell phones, personal digital assistants, and other hardware.

The image is made of 150 million tiny nanotubes, about the number of Americans who voted on Nov. 4.

A nanobama structure of U.S. President-elect Barack Obama's image, each made with approximately 150 million tiny carbon nanotubes, is photographed using optical and electron microscopes by University of Michigan Mechanical Engineering Department in this image released to Reuters November 10, 2008. The image, based on an original drawing by Shepard Fairey, is made of approximately 150 million tiny carbon nanotubes, which is about the number of Americans who voted on November 4, according to John Hart at University of Michigan.(Xinhua/Reuters Photo)

Carbon nanotube speaker makes sound, but no vibrations

While carbon nanotubes are widely praised for their strength and electrical properties, no one has thoroughly investigated their acoustic properties, until now. A team of Chinese researchers has found that zapping sheets of carbon nanotubes with an electric current causes the nanotubes to emit sound.

TiO2â'WO3 Composite Nanotubes by Alloy Anodization: Growth and Enhanced Electrochromic Properties

nanotubes can be grown by anodization of Ti alloys in an ethylene glycol/fluoride based electrolyte under selected electrochemical conditions. These aligned mixed oxide nanotube structures are highly suitable for enhanced electrochromic reactions; in particular we show that already small amounts of WO

Nanotubes crank out tunes

Attach electrodes to an ultrathin sheet of carbon nanotubes and you have a simple, lightweight, transparent and flexible loudspeaker.

Nanotubes & Memory

University researchers are trying to develop a nanodevice for data storage by using carbon nanotubes, which are made from rolled graphite sheets just one carbon atom thick

Carbon nanotubes give cheap fiberoptics a pulse

Carbon nanotubes (CNTs) are making inroads into the world of lasers where, traditionally, exotic semiconductor materials have dominated. We recently reported on a new CNT composite that may have telecommunications applications, although that work focused on the matrix that the CNTs were embedded in. New work published in Nature Nanotechnology has shown that our relative inability to precisely control the growth of CNTs has turned into an advantage for laser applications—it can be leveraged to produce a saturable absorber that controls pulsed laser outputs over a much wider band than traditional semiconductor equivalents.

Nottingham nanotubes

UK researchers are taking part in a study to investigate the use of carbon nanotubes to create compact memory cells for ubiquitous electronic devices.

Carbon Nanotubes Improve Protein Array Detection Limits

To detect cancer as early as possible, dozens of research groups are developing methods to detect trace levels of cancer-related proteins and genes in blood or other biological samples. Those efforts should get a boost thanks to new research results showing that carbon nanotubes can serve as incredibly sensitive optical labels for use in a wide variety of assay systems.

Carbon Nanotubes Improve Protein Array Detection Limits

To detect cancer as early as possible, dozens of research groups are developing methods to detect trace levels of cancer-related proteins and genes in blood or other biological samples. Those efforts should get a boost thanks to new research results showing that carbon nanotubes can serve as incredibly sensitive optical labels for use in a wide variety of assay systems.

Carbon nanotubes help protein detection, too

To detect cancer as early as possible, dozens of research groups are developing methods to detect trace levels of cancer-related proteins and genes in blood or other biological samples. Those efforts should get a boost thanks to new research results showing that carbon nanotubes can serve as incredibly sensitive optical labels for use in a wide variety of assay systems.

Telescopic nanotubes aim to combine virtues of SRAM, flash

Random access memories require constant power to offer their fast access speeds, but can't be scaled to as small a size as slower nonvolatile flash memories. Now researchers believe they can combine the high-speed of RAM with the nonvolatility of flash by using telescopic nanotubes.

Telescopic nanotubes aim to combine virtues of SRAM, flash

PORTLAND, Ore. —Random access memories require constant power to offer their fast access speeds, but can't be scaled to as small a size as slower nonvolatile flash memories. Now researchers believe they can combine the high-speed of RAM with the nonvolatility of flash by using telescopic nanotubes.

Telescopic nanotubes aim to combine virtues of SRAM, flash

PORTLAND, Ore. —Random access memories require constant power to offer their fast access speeds, but can't be scaled to as small a size as slower nonvolatile flash memories. Now researchers believe they can combine the high-speed of RAM with the nonvolatility of flash by using telescopic nanotubes.

Telescopic nanotubes aim to combine virtues of SRAM, flash

PORTLAND, Ore. —Random access memories require constant power to offer their fast access speeds, but can't be scaled to as small a size as slower nonvolatile flash memories. Now researchers believe they can combine the high-speed of RAM with the nonvolatility of flash by using telescopic nanotubes.

Telescopic nanotubes aim to combine virtues of SRAM, flash

PORTLAND, Ore. —Random access memories require constant power to offer their fast access speeds, but can't be scaled to as small a size as slower nonvolatile flash memories. Now researchers believe they can combine the high-speed of RAM with the nonvolatility of flash by using telescopic nanotubes.

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