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November 05, 2009

Another Beyond CMOS Candidate

H. J. De Los Santos is with NanoMEMS Research and they have proposed a new beyond CMOS computer architecture called Nano-electron-fluidic logic.

Theory of Nano-Electron-Fluidic Logic (NFL): A New Digital "Electronics" Concept

A new digital "electronics" concept is introduced. The concept, called nano-electron-fluidic logic (NFL), is based on the generation, propagation and manipulation of plasmons in a two-dimensional electron gas behaving as an electron fluid. NFL gates are projected to exhibit femtojoule power dissipations and femtosecond switching speeds at finite temperatures. NFL represents a paradigm shift in digital technology, and is poised as a strong candidate for "beyond- CMOS" digital logic.


* Operates with far less heat and more efficient energies (femtojoules)
* Faster switching speeds (femtosecond)
* higher density potential for devices
* Terahertz operating speeds for chips
* Propogation velocity of electron fluid is hundreds of times faster than electrons in current CMOS
* Device construction is compatible with current lithography

Nano-Electron Fluidic Logic (NFL) Device patent application 2009026764

A nano-electron fluidic logic (NFL) device for controlling launching and propagation of at least one surface plasma wave (SPW) is disclosed. The NFL device comprises a metallic gate patterned with a plurality of terminals at which SPWs may be launched and a plurality of drain terminals at which the SPWs may be detected. A wave guiding structure such as a 2 DEG EF facilitates propagation of the SPW within the structure so as to scatter/steer the SPW in a direction different from a pre-scattering direction. A bias SPW is excited by an application of a control SPW with a momentum vector at an angle to the bias SPW and a control current with a wavevector which scatters the bias SPW in the direction of at least one output SPW, towards a drain terminal. The NFL device being rendered with device speed as a function of SPW propagation velocity.


* speed of the device is a function of SPW propagation velocity in terahertz switching frequencies.




A previous paper from 2004 by Héctor J. De Los Santos: NanoMEMS SYSTEMS ON CHIP

NanoMEMS exploits the convergence between nanotechnology and microelectromechanical systems (MEMS) brought about by advances in the ability to fabricate nanometer-scale electronic and mechanical device structures. While the “nano” aspect of this field is in its infancy, and is not expected to reach maturity until well into the 21st century, its “MEMS” aspect is a topic of much current and near-term impact in, for instance, RF/Wireless communications. In this context, we discuss the fundamentals of NanoMEMS, in particular, as it relates to its most speculative and futuristic paradigms and applications, and then focus on the RF/Wireless MEMS aspect, specifically in its role as enabler of ubiquitous wireless connectivity.



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