19_Memristors 3080 Daniel Burnham

19_Memristors 3080 Daniel Burnham - Memristors Daniel...

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Unformatted text preview: Memristors Daniel Burnham ECE 3080 The Basics Missing passive circuit element that relates charge and voltage and keeps a previous resistance in the absence of current Unites the other passive circuit elements in relation to each other Resistor: Voltage and Current Capacitor: Charge and Voltage Inductor: Flux-Linkage and Current Memristor: Flux-Linkage and Charge Basics Image taken from http://memristors.memristics.com/Memristors/Memristors,%20again.html History In 1960 Widrow wrote a paper on 3 terminal memistors called An Adaptive ADALINE Neuron using chemical memistors in which he describes 3 terminal devices similar to memristors In 1968 Argall wrote a paper title "Switching phenomena in titanium oxide thin films, which talks about the resistance switching of Titanium Dioxide In 1971 Leon Chua independently predicted and described the memristors function in his paper Memristor-the Missing Circuit Element Several Variable resistance devices were developed but none made a connection to the original theory including Samsung who filed a patent on oxygen vacancies in 2 In 2008 Several members of HP Labs published a paper that outlined the memristor behavior in nanoscale systems using Titanium Dioxide http://tinytechip.blogspot.com/2011/04/hps-memristor-is-greatest-hoax- in.html Theory Memristance (M) is a varying resistance as a function of flux ( ) and charge (q) M(q) = d (q)/dq The voltage across a memristor is defined as v(t) = M(q(t))i(t) Memconductance (W) follows similarly W(f)=dq( )/d The current across a memristor is described by I(t) = W( (t) ) v(t) http://physics.ucsd.edu/~diventra/Memdevicespubfinal.pdf Circuit Elements With Memory:Memristors, Memcapacitors,and Meminductors Reality of the Theory Controversy over the 4 th circuit component memristors are actually a non-linear version of the same system as the resistor This leads to idea of memcapacitors and meminductors as being other non-linear circuit elements The Mythology of the Memristor Blaise Mouttet of George Mason University http://www.slideshare.net/blaisemouttet/mythical-memristor Non-Linear Resistor General desription for a resistor over time V = R(w)*I(t) In a resistor...
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This note was uploaded on 08/23/2011 for the course ECE 3080 taught by Professor Staff during the Spring '08 term at Georgia Institute of Technology.

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19_Memristors 3080 Daniel Burnham - Memristors Daniel...

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