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R_Colin_Johnson
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posted in February 2005

7 items
Nano sensor 'immune' to toxins it detects
News & Analysis  
2/28/2005   Post a comment
Engineers at the University of Texas (Austin) and Georgia Institute of Technology say they have built a reusable sensor that can detect nerve gas and similar toxic airborne agents without getting contaminated itself.
NIST crafts molecular solder iron
News & Analysis  
2/28/2005   Post a comment
While molecular-size components such as diodes and resistors built from individual atoms have been demonstrated in laboratories worldwide, their exceedingly small size creates some fundamental problems.
Nano mechanical oscillator makes big wave
News & Analysis  
2/21/2005   Post a comment
A 1.5-GHz silicon "comb" that is said to be the world's fastest nanoscale electromechanical system (NEMS) is nevertheless huge on the quantum scale: The oscillation of its teeth exhibit the world's biggest quantum motion. According to the research project team, headed by Boston University professor Pritiraj Mohanty, the teeth of the comb exhibit quantum-mechanical motion by jumping between two discrete positions without passing through the physical space between them.
MEMS 'cochlea' is closest yet to real thing
News & Analysis  
2/14/2005   Post a comment
A MEMS-based implant holds the promise of an artificial ear that would let the deaf hear without external electronics.
Hearing aids given nanotech spin
News & Analysis  
2/14/2005   Post a comment
Nanotech hearing aids due out next month will carry spintronic sensors that automatically adjust to accommodate the source of sounds.
Semiconductor aerogels advance sensors
Design How-To  
2/7/2005   Post a comment
Semiconducting aerogels have recently been demonstrated that cast quantum dots into a sparse, crystalline-like matrix with more space than substance. Such porous materials could enable supersensitive sensors and superefficient plastic photovoltaics, said the Wayne State University research team pursuing the project.
Crossbar logic shrinks to nanoscale
News & Analysis  
2/7/2005   Post a comment
Hewlett-Packard Co.'s HP Labs has designed a crossbar switch that may one day allow the company to pack the power of a traditional microprocessor arithmetic logic unit into just a few square microns.


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