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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 1689 in category (newest first):

 

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

A nanocapacitor with giant dielectric permittivity

The area of nanodielectrics is relatively unexplored but research shows that nanocapacitors could find important applications for instance in energy storage and ultrasensitive transducers in nanoelectronic circuits.

Posted: Apr 14th, 2006

Quantum dot necklaces and other QD chains

For the past two years, the molecular-beam-epitaxy (MBE) group at the University of Arkansas has developed a novel growth procedure to laterally line up self-assembled InGaAs quantum dots (QDs).

Posted: Apr 12th, 2006

Quantum dots in a tube could open a new chapter in opto-electronics

Researchers in Germany managed to integrate quantum dots (QD) into the walls of nano- and microtubes. This novel structure serves as a quantum light emitter as well as optical waveguide. This represents a major step toward the realization of flexible high quality factor optical resonators based on tubes.

Posted: Apr 11th, 2006

Nanostructured colloidal systems inspired by nature

Recent work on bioinspired nanoscale colloidal systems is an example of the significant interest that the design and fabrication of nanostructured colloidal materials has created among scientists.

Posted: Apr 10th, 2006

Creating differently shaped and sized hollow nanospheres from a single template

Polymeric hollow nanospheres with high stability and controllable permeability have interesting potential applications associated with the controlled release of encapsulated active ingredients (e.g., drugs, vaccines, antibodies, hormones, pesticides, and fragrances) under well-defined conditions. Researchers in Singapore are now fabricating hollow nanostructures with different shapes using a single template.

Posted: Apr 7th, 2006