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Nano Elekronik...Nano Electronics...Nano Elektronica
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TINY DNA BASED TRANSISTORS
DEVELOPED BY ISRAELI SCIENTISTS

 

 

A carbon nanotube (1) forms a bridge between two segments of DNA
supported by gold contacts (2) that are attached to a silicon surface ( 3)

 

A group of Israeli scientists has developed a unique approach to creating nanotransistors based on DNA. This method might eventually lead the way to the development of new ultra-small transistors as well as tiny chemical and biological sensors.

 

In another important advance in the Israeli nanotechnology industry, Prof. Ron Naaman and his research group, from the Weizmann Institute in Israel, have developed a new method for creating ultra-small electrical components. The team created a miniature "bridge" made of carbon nanotubes connecting two tiny gold contacts on a silicon surface (see image below). This marks another step in the development of nano electronics which many analysts see as the next stage in the computer and electronics industry.

Naaman and his team developed the tiny electrical connection using DNA strands that connected the carbon nanotubes to the gold contacts. Using DNA as a basis for nano engineering is not a new concept, and the Weizmann team is not the first to try this approach, but their method appears to be the most suitable to date for large-scale production and the development of a variety of industrial applications.

One other application, apart from the nano transistors, might be nano-scale biological and chemical sensors. Using the DNA's unique ability to attach itself to certain molecules the new technique might allow the creation of highly specialized nano sensors that will prove valuable to both the medical and the industrial community.

For now, the team still has a lot of work ahead of them. Currently they have managed to create only nanotransistors with ten percent of the available gold contact pairs, hardly enough for commercial application, but they are hard at work improving these numbers.

Iddo Genuth, Science & Tech reporter
Isracast ( http://www.isracast.com )

Tech@IsraCast.com


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