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MEMRISTORMEMRISTOR
SREEJITH A G
S7 EB # 57
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What is Memristor
Mem story
Inside Memristors
Why Memristor
Big Guns involved
FUTURE
To conclude
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What is memristor ?
What is memristor ?
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Memristor is really a MEMory ResISTOR
Memristor can be defined as a two
terminal device which shows the
relation between magnetic flux
and charge
memristor symbol
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Memristor AnalogyMemristor Analogy
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The term Memristor was first proposed by Leon Chaua in 1971 when he was a rising professor atThe University of CaliforniaThe University of California Berkeley
LEON.O.CHUA
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THE FORTH FUNDAMENTAL DEVICE
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Pinched Loop Curve
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MEMISTOR
IN 1960 Bernard Widrow develops a 3 terminal device called a "memistor" as a new fundamental circuit component forming the basis of a neural network circuit called ADALINE (ADAptive LInear NEuron).
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1960:
Bernard Widrow develops a 3-terminal device called a "memistor" as a new fundamental circuit component forming the basis of a neural network circuit called ADALINE (ADAptive LInear NEuron).
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1971:
Lion chaua postulates a new two terminal circuit element characterised by flux charge relationship in the article
"Memristor-the Missing Circuit Element" published in IEEE Transactions on Circuit Theory
1972:Leon Chua and his student Sung Mo Kang publish a paper entitled
"Memristive Devices and Systems" in the Proceedings of the IEEE generalizing the theory of memristors and memristive systems
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1998:
Bhagwat Swaroop, William West and others publish a paper entitled Programmable Current Mode Hebbian Learning Neural Network Using Programmable Metallization Cell"
in the Proceedings of the IEEE International Symposium on Circuits and Systems demonstrating that the complexity of an artificial synapse can be minimized by using an ionic programmable resistance device.
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2008:
MAY
Dmitri Strukov, Gregory Snider, Duncan Stewart, and Stan Williams, of HP Labs, publish an article in Nature
"The missing memristor found"
identifying a link between the 2-terminal resistance switching behavior found in nano scale systems and Leon Chua's memristor.
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JULY
Victor Erokhin and M.P. Fontana claim to have developed a polymeric memristor before the titanium dioxide memristor of Stan Williams group in the article "Electrochemically controlled polymeric device: a memristor (and more) found two years ago."
SEPTEMBER
Blaise Mouttet, a graduate student at George Mason University, presents a poster entitled "Proposal for Memristors in Signal Processing" at Nano-Net 2008, a nanotechnology conference in Boston
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2009:MARCH
XiaobinWang, Yiran Chen, Haiwen Xi, Hai Li, and Dimitar Dimitrov publishes article entitled “Spintronic Memristor Through Spin-Torque-Induced Magnetization Motion” in IEEE Electron Device Letters
JULY
NIST scientist demonstrate flexible memory which has memristor properties
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SEPTEMBER
Memristive behavior of magnetic tunnel junctions is reported by researchers from the Bielefeld University, Germany.
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Types of memristor’sTypes of memristor’s
Memistor Unrecognized First Memristor
Hp lab’s TiO2 switching memristor
Spintronic Memristor
NIST’s flexible memristor
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MemistorIn 1960 circuit element called the memistor (a resistor with memory)
has been devised by B. Widrow and M. E, Hoff for the realization of automatically adapted ADALINE neurons
The first working memistors were made of ordinary pencil leads immersed in test tubes containing copper sulphate- sulphuric acid plating baths. These elements are small and rugged, cheap, simple, and noncritical in manufacture.
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In may of 2008, 37 year old Waiting for Leon Chua blossomed, when scientists under the leadership of R .R . Stanley WilliamsStanley Williams created the first memristor at
HP labsHP labs The Memristor was created out
of TiO2 and TiO 2 -x
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How H P’s Memristor works
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DRAWBACKS
The models do not take into account memcapacitive effects.
The models are poorly formulated.
The models do not properly distinguish the internal and external electric field.
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Spintronic Memristor
Yiran Chen and Xiaobin Wang, researchers at disk-drive Manufacturer Seagate Technology described three examples of possible magnetic memristors in IEEE Electron Device Letters
Spintronics is at the heart of recent advances in hard-drive data density and the niche nonvolatile memory known as MRAM
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The three methods
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NIST’s effort to built the first nonvolatile fast flexible memory for defense purpose led them to the invention of first ever flexible memristor in July of 2009 This memristor uses the same material as that of HP’smemristor but in a much simpler way
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Other types of Memristor to be developed
Magneto Resistive memory effectMagneto Resistive memory effect
Electrostatic effectElectrostatic effect
Valency change effectValency change effect
Thermo chemical effectThermo chemical effect
Phase change memoryPhase change memory
Nano mechanical memoryNano mechanical memory
Ferroelectric/ MF TunnelingFerroelectric/ MF Tunneling
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Nonvolatile memoriesNonvolatile memories
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Booting free computersBooting free computers
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Logic/computingLogic/computing
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Artificial BrainArtificial Brain
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Physarum polycephalumPhysarum polycephalum
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Big Guns involved
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Future
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Memcapacitor Memcapacitor and
MeminductorMeminductor
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To conclude
It is sure that Memristor is going to revolutionaries the 21st century as radically as the transistor in the 20th century
But Memristor will have to wait a few years for a killer app like transistor which had to wait almost a decade after it’s invention for the killer app in the form of hearing aids
Finally as Leon O Chua mentioned
It’s time to rewrite all the EE textbooks”
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REFERENCE "Memristor—The Missing Circuit Element", IEEE
Transactions on Circuit Theory by Leon O Chua (1971)
"Memristive Devices and Systems" in the Proceedings of the IEEE by Leon Chua and his student Sung Mo Kang (1976)
"The missing memristor found" Nature (may2008)
IEEE Spectrum - The Mysterious Memristor, by Sally Adee (may 2008)
IEEE Spectrum - How We Found the Missing Memristor, by R. Stanley Williams (dec 2008)
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Spintronic Memristor Through Spin-Torque-Induced Magnetization Motion by XiaobinWang, Yiran Chen, Haiwen Xi, Hai Li,and Dimitar Dimitrov IEEE Electron Device Letters,(march 2009)
A Flexible Solution-Processed Memristor by Nadine Gergel-Hackett, Behrang Hamadani, Barbara Dunlap, John Suehle, Curt Richter, Christina Hacker, and David Gundlach, IEEE Electron Device Letters, (july 2009)
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web links
en.wikipedia.org/wiki/Memristor
www.hpl.hp.com/news/2008/apr-jun/memristor.html
www.memristor.org
www.newscientist.com/article/mg20327151.600-memristor-minds-the-future-of-artificial-intelligence.html
www.youtube.com/ucberkley
http://blogs.howstuffworks.com/2009/07/24/
how-does-a-memristor-work/
www.spectrum.ieee.org
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VIDEO LINKS
Memristor and Memristive Systems Symposium (4 parts) total of 5 hours
6-Minute Memristor Guide
Memristors The Missing Link(3:38)
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Any queries?...Any queries?...
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