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Nanotechnology Spotlight

Behind the buzz and beyond the hype:
Our Nanowerk-exclusive feature articles

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Showing Spotlights 1641 - 1648 of 1696 in category (newest first):

 

Magnetite-labeled carbon nanohorns as low-toxicity MRI agents

Notwithstanding all the recent publicity about the presumed or actual toxicity of nanomaterials, the detailed pharmacological knowledge of any nanomaterial is important in order to assess its level of toxicity in the living body. While in vivo toxicity assessment of carbon nanotubes (CNTs) is still at the early stage, research in this area is well underway.

Posted: Apr 28th, 2006

A practical method for the production of hollow carbon onion nanoparticles

Carbon onions, which are made of concentric graphene spherical shells, are a potential solid lubricant similar to Tungstenite (WS2) nanoparticles having an onion-like structure. In addition, carbon onion nanoparticles are expected to have good prospects for other applications, such as the reinforcement of composite materials, magnetic storage media and wear-resistant materials.

Posted: Apr 27th, 2006

Thermolithography: Nanomanufacturing under heat

Lithography is a critical enabling technology for manufacturing nanoscale devices and structures. Suppose nanolithography tools cost just a few thousand dollars a piece instead of a few million dollars. These cheap tools would wide open the fields of nanotechnology to practically every university and industry researcher interested in the field.

Posted: Apr 26th, 2006

Nanowerk interview with Ted Sargent

Nanowerk spoke with Professor Ted Sargent, professor and Canada Research Chair in Nanotechnology at the University of Toronto and author of the recently published and highly acclaimed book The Dance of the Molecules.

Posted: Apr 25th, 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

Fabricating palladium nanostructures in a simple and inexpensive way

Researchers in Canada used the electroless deposition process for self-assembling Palladium nanostructures, such as wires, from nanoparticles on a rough stainless steel substrate. This discovery holds a lot of potential for various engineering applications because the deposition process and the preparation of the substrate are simple and inexpensive.

Posted: Apr 21st, 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