U pravu ste ,postoje greske u tekstu. Mokekul se sastoji od atoma , a nano je 1000000000 deo metra (10^-9).
Ovo je malo stariji tekst sa predviđanjima kuda bi tehnologija mogla da se kreće u budućnosti.
August 27, 2001
IBM's New Circuit Hails Nano-Computing
By Erin Joyce
Researchers at International Business Machines have unveiled another advance in the march to miniaturize computing, a logic-performing computer circuit made from a single molecule of carbon.
The development, hailed as the world's first, could lead to a new class of smaller and faster computers that consume less power than today's machines.
The IBM research team made the new circuit, called a "voltage inverter," one of the three fundamental logic circuits that are the basis for all of today's computers -- from a carbon nanotube. The tube-shaped molecule of carbon atoms is 100,000 times thinner than a strand of human hair, or about a billionth of a meter.
Dr. Phaedon Avouris, the lead scientist on the project and manager of nanoscale science with IBM's research division, said carbon nanotubes are the top candidate to replace silicon when current chip features just can't be made any smaller, a physical barrier expected to occur in about 10 to 15 years.
"Such 'beyond silicon' nanotube electronics may then lead to unimagined progress in computing miniaturization and power," he said.
In the binary digital world of ones and zeros, a voltage inverter changes a '1' into a '0', and a '0' into a '1' inside computer chips. The processors at the heart of today's computers are basically vast and intricate combinations of the NOT gate, with two other basic functions, "AND" and "OR" gates, which perform other computations, the scientists explained.
The research team used the voltage inverters (the transistors) to make logic gates out of the carbon nanotubes, which eventually led to the breakthrough: a logic gate out of a single molecule -- the world's first single-molecule logic circuit.
On a break between sessions at the annual gathering of the American Chemical Society in Chicago, Avouris said the miniaturization of circuits in a computing system has been the driving force since the use of transistors in computing.
"All around the world, people are trying to find out what the successor of silicon technology will be," he said. One area of promise is molecular electronics and a new form of carbon that, since 1998, Avouris and his team have been using to make new types of transistors.
"By making things smaller you get a number of things: area circuits occupy less space, giving you more circuits for computing power. At the same time, you're making them smaller and faster, electrodes have less (distance to) travel, the power used to do that goes down."
The research team is in Chicago to unveil to the chemists the process by which the team created the carbon nanotubes.
Next up for the IBM research team is the goal of creating more of these complex circuits in the march toward molecular computers. In addition, the team is working to further improve the performance of individual nanotube transistors, and further integrate them into more complex circuits.
The information on the new circuits is detailed in a article: "Carbon nanotube inter- and intra-molecular logic gates" by Vincent Derycke, Richard Martel, Joerg Appenzeller and Phaedon Avouris of IBM's T.J. Watson Research Center in Yorktown Heights, N.Y.
The article has been published in the August 26 Web edition of Nano Letters, a peer reviewed journal of the American Chemical Society, the world's largest scientific society, and is available at
http://pubs.acs.org/nano.
Link.
Ovo je opis sa slikama kako to otprilike izgleda.
WHAT IS NANO-CARBON?
Caron Nanotube can be made by rolling up the carbon-sheet with a diameter of around 10-9 m. This carbon sheet is the same material as pencil core. However, the carbon nanotubes have interesting properties, for instance, they exhibit metal-like conductor, semiconductor, and insulator with changing the diameter.
Therefore, it is possible to fabricate rectifying devices, similar to Si technology. The device size is as small as 1/100 of Si devices, thus this is categorized in molecular device.
Furthermore, novel electrical and mechanical properties can be produced by arrangement of some kind of molecules in the nanotube.
In the"Nano Factory" we are challenging to produce new materials based on nano-carbon, which have a superior electrical and mechanical properties.
Link.
[Ovu poruku je menjao stil dana 03.11.2007. u 18:56 GMT+1]
Nova grana tehnike - nanotehnologija - ne prestaje da nas iznenađuje
