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didac

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manresa,spain

Single electron Tunneling
May 30^th, 2007, 12:34pm

Today I assisted to a seminar on SET technologies. At this moment they aim is to generate a logic family to perform the same functions as standard boolean logic for tomorrow's computers. Altough not directly related with the main purpose of this forum maybe somebody is curious about which are the possible candidates for substitute CMOS when scaling it's not feasible anymore. The web of the teacher is:http://ce.et.tudelft.nl/~sorin/ and you can find several papers at:http://ce.et.tudelft.nl/nanoc/nanopublications.php.
PS:maybe it's time to take a course of quantum physics just in case.

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krishnap Community Member Offline Posts: 55	Re: Single electron Tunneling Reply #1 - May 31^st, 2007, 2:39am This is an interesting topic. How the SET structure is m manufactured and the single electron is controlled for the operation? Any inputs on this?
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mg777

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Re: Single electron Tunneling
Reply #2 - May 31^st, 2007, 5:00am

Thanks for the interesting references. As usual, Wikipedia gives the best introduction, apart from providing a context for kT/q = sqrt(kT/C) which caught my attention in an earlier post.

http://en.wikipedia.org/wiki/Single_electron_transistor

The low temperature of operation of such devices poses a natural concern, almost laughably so. In my view however, the bigger concern is that the economic return from semiconductors diminishes faster than Moore's Law.

M.G.Rajan

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didac

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Re: Single electron Tunneling
Reply #3 - May 31^st, 2007, 5:02am

Hi,
It was only a two day seminar but they said:
-It can be manufactured in standard process
-Or with organic moleculas
-Or with nanotube technology
The principle of operation is stochastic, increasing a voltage in a junction over a certain value give a probability over zero that an electron passes the tunnel.
Currently the manufacturing is a little bit complicated because they depend on junction capacitance of aF... to make them work with actual capacitances they must operate a temperatures of few kelvins, but they working towards more advanced techniques. At the moment they have D-Flip Flops,AND,OR,NOR... adders and buffers.
Who knows maybe it will be the future.

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didac Senior Member Offline There's a million ways to see the things in life Posts: 247 manresa,spain	Re: Single electron Tunneling Reply #4 - May 31^st, 2007, 5:03am Ups, sorry I sent the post before checking Mr.Rajan observation on temperature, I apologize.
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