Nanoscale technology
Interesting tech developments in nanotech, nanostructured materials, etc.

Ken Novak's Weblog


daily link  Tuesday, September 28, 2004


Nanocarpets that sense and kill bacteria:  Self-assemling molecules that change color as they kill bacteria on contact.  " 'In these nanotube structures, we have created a material that has the ability to sense their environment. The work is an outgrowth of our interest in developing materials that both sense and decontaminate chemical or biological weapons,' said senior author Alan J. Russell, Ph.D., professor of surgery at the University of Pittsburgh School of Medicine"  12:13:11 PM  permalink  


daily link  Wednesday, September 15, 2004


Nanotechnology improves superconductors: "University of California scientists working at Los Alamos National Laboratory with a researcher from the University of Cambridge have demonstrated a simple and industrially scaleable method for improving the current densities of superconducting coated conductors in magnetic field environments. The discovery has the potential to increase the already impressive carrying capacity of superconducting wires and tapes by as much as 200 to 500 percent in certain uses, like motors and generators ..

Superconducting wires and tapes carry hundreds of times more electrical current than conventional copper wires with little or no electrical resistance. Superconducting technology is poised to bring substantial energy efficiencies to electrical power transmission systems in the United States. Much of the excitement caused by this discovery is due to the fact that the process can be easily and economically incorporated into commercial processing of the superconductors. ..

Dean Peterson, leader of the STC, said, "This is a significant technical advancement because it means we are now beginning to understand how to control defects in these superconducting materials and use them to our advantage. This was the first time we have been able to control the structural defects and in doing so, better engineer the material's structure to optimize performance." .. Scientists discovered that small, nanoscale defects are required to maintain high current densities in superconductors, particularly in the presence of high magnetic fields. "

  12:38:57 AM  permalink  

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Last update: 11/24/2005; 11:39:46 PM.
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