X-Message-Number: 19916
Date: Mon, 26 Aug 2002 11:49:47 EDT
Subject: Re: #19866 Nanogirl

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Gina Miller said:

> 'Nanoantennas' could bring sensitive detectors, optical circuits.
> Researchers have shown how tiny wires and metallic spheres might be 
> arranged
> in various shapes to form "nanoantennas" that dramatically increase the
> precision of medical diagnostic imaging and devices that detect chemical 
> and
> biological warfare agents. Engineers from Purdue University have
> demonstrated through mathematical simulations that nanometer-scale antennas
> with certain geometric shapes should be able to make possible new sensors
> capable of detecting a single molecule of a chemical or biological agent.
> Such an innovation could result in detectors that are, in some cases,
> millions of times more sensitive than current technology. (Purdue News
> 8/21/02)
> http://news.uns.purdue.edu/html4ever/020821.Shalaev.nanoantenna.html
> Gina "Nanogirl" Miller

It is known that fractal paterns produce efficient antennas far smaller than 
the wavelength they can recive or radiate. This seems to be the ultimate step 
in this way. I have seen not long ago a paper in New Scientist about a 3D 
scanner using microwaves. May be putting end to end these two technologies, 
it could be possible to build a brain monitor: A system able to detect the 
electro-chemical activity in a brain and translate it into "thinks". 

Yvan Bozzonetti.


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