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Showing Spotlights 273 - 280 of 285 in category Carbon Nanotubes (newest first):

 

Converting carbon nanotubes into diamonds

Carbon nanotubes have been converted to diamonds before but a group of researchers in the PR China and the UK now managed to do this at a very low pressure of only 80 megapascal.

Posted: May 2nd, 2006

The interesting transport properties of SWNT nanorings

As a novel superstructure, single-walled carbon nanorings exhibit interesting transport properties, such as Aharonov-Bohm effects, magnetotransport or establishment of persistent currents. Researchers in China have developed a new technique to produce large quantities of small-diameter single-walled carbon nanotube (SWNT) nanorings.

Posted: Apr 24th, 2006

Bonding of carbon nanotubes to metal electrodes through ultrasonic nanowelding

Building reliable interconnections between carbon nanotubes (CNTs) and external electrical and mechanical systems is an essential prerequisite to exploring the potential of CNTs in various domains. The formation of a stable and low-resistance ohmic contact between CNTs and electrodes contributes to speeding up the development of applications with CNTs in nanoelectronic devices with small size, fast speed and low power dissipation.

Posted: Apr 19th, 2006

Toxicology of carbon nanomaterials

There is universal consensus among scientists and researchers that more work is needed on all of the new carbon nanomaterials that have been developed over the past years to adequately assess their toxicity and health risks. A recent review addresses the current status, trends and perspectives of this issue.

Posted: Apr 18th, 2006

Electrochemical probes with nanometer dimensions

Researchers in Finland and The Netherlands demonstrated that it is possible to grow and wire a single platinum nanoparticle using a single-walled carbon nanotube, thus providing a bottom-up approach to building nanoelectrodes.

Posted: Apr 5th, 2006

Ultra-strong composite materials with nanotubes

Carbon nanotubes ((CNTs) are five times less dense than steel and approximately 30 times stronger. Their mechanical properties make them ideal candidates for the mechanical reinforcement of polymers.

Posted: Apr 3rd, 2006

CNTs as templates for one-dimensional nanoparticle assemblies

Spanish researchers have shown that carbon nanotubes (CNTs) constitute the ideal templates for the formation of one-dimensional strings of metal nanoparticles, with potential uses as waveguides, that would allow the miniaturization of devices below the diffraction limit and as catalytic motors.

Posted: Mar 23rd, 2006

A new process allows growing carbon nanotubes directly onto MEMS

Researchers in Switzerland have successfully integrated carbon nanotubes (CNTs) directly into a polysilicon chip. This technique is opening the way towards NEMS and CNT based system integration and the synthesis and evaluation of mechanical nano-scale transducers based on CNTs.

Posted: Mar 17th, 2006