Memristor-The Missing Passive Element

Hello guys, it has been a very long gap I’m posting another interesting post, its time to know something different which most of the people doesn’t know.  Its time to know one of the interesting element which led the advancement of electronics, which made robotics more efficient, a passive element which many people doesn’t know, yes it’s the 4^th element of the passive elements family called “ Memristor” .

Memristor

This post presents a very brief description of the special two terminal device named ‘Memristor’, a contraction of Memory and Resistor which has every right to be as a basic as the three classical circuit elements already in existence, namely, the resistor, inductor, and capacitor.

The concept of memristor was originally proposed by a circuit theorist LEON.O.CHUA in 1971 as a missing nonlinear passive two terminal component relating the charge q(t) and the flux-linkage ψ(t) As per many circuit theoretic properties of memristor derived, it is shown that this element exhibits some peculiar behaviour different from that exhibited by resistors, inductors, or capacitors. These properties lead to a number of unique applications which cannot be realized with RLC networks alone.

Curve relating charge & flux linkage

The memristor's resistance is not constant but depends on the history of current that had previously flowed through the device, i.e., its present resistance depends on how much electric charge has flowed in what direction through it in the past. The device remembers its history, that is, when the electric power supply is turned off, the memristor remembers its most recent resistance until it is turned on again.

Applications of Memristors:

v The memristor could make it possible to develop far more efficient computing systems with memories that retain information even after the power is off, so there's no wait for the system to boot up after turning the computer on.

v  It may even be possible to create systems with some of the pattern-matching abilities of the human brain.

v As for the human brain-like characteristics, memristor technology could one day lead to computer systems that can remember and associate patterns in a way similar to how people do.

v This could be used for improving face recognition technology & biometric technologies.

v Solid state memristors can be combined into crossbar latches which may replace transistors in the future.

v These have applications in the various fields of electronics such as signal processing, control systems, radio frequency identification and so on….

Hope this brief idea about the Memristors was useful to all , hoping to write more regarding this in the upcoming future. Thanx for visiting the blogger. Do comment ur views . Keep visiting..