Essay about Memristor seminar ppt

Prepared by:

THANSAL K Y

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Known Three fundamental unaggressive circuit components:

Resistor, Inductor, Capacitor.

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Does a fourth fundamental element can be found?

v

Resistor

dv=Rdi

Capacitor

dq=Cdv

queen

i

Inductor

Memristor

Leon

the living

of memristor

in 1971

In 2008Chua

a teamproposed

leaddF

by Stanley

Williams

made

the 1st

dF =Ldi

=Mdq

memristor

φ

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What is a MEMRISTOR

Memristor is really a MEMory ResISTOR

Memristor can be defined as a two

fatal device which will shows the

relation among magnetic flux

and fee

memristor mark

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Memristor Theory

Or

Or perhaps

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Memristor and Resistor

• The way resistor has resistance, memristor features

memristance.

• Same product –ohm.

• Memristance could be switched to be able to states.

• Memristor features non geradlinig v-i story.

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Memristor features

• level of resistance depends on degree, polarity and time

using voltage.

• Save it is electronic condition when current is deterred.

• " Remember” simply how much current is long gone through

this.

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Physical example for a memristor

• Resistor is analogous to a water pipe of set diameter

whereby water is usually flowing

• Water(charge q), input pressure(voltage v), rate of movement of water(current i).

• Resitance depends on diameter.

• Memristor is usually analogous into a special kind of pipe that

expands or shrinks when water goes through it.

• The pipe is directive in nature.

• If water pressure is usually turned off, pipe will maintain its most current diameter, till water is usually turned back again on.

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Physical analogy for a memristor

Memristor

Pipe

Charge

Water

Conductance

Cross sectional area

Potential

Pressure

When ever water runs

in one course

the size

increases

(resistance

decreases)

Once water moves in

opposite direction

the diameter

reduces (resistance

increases)

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Why memristor

a fundamental component

• Can not be duplicated simply by R, C, L.

• Peculiar behaviour- carries memory space of earlier.

• Copying requires alot of transistors and capacitors.

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V-I characteristics

• Resistor-energy

licentious

• Capacitor-store

energy in electric field

• Inductor-store

energy

in magnetic discipline

• MEMRISTOR

– Shop Information

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Course of development

• First forecasted by Leon Chua in 1971 when he was a rising mentor at The university or college of a bunch of states.

• His paper " Memristor-The missing circuit element”.

was released in the IEEE Transactions on circuit theory.

• 1st solid state version in 2008 with a research staff led by R. Stanley Williams of HP Labs.

• Reported in a renowned science journel, NATURE puts out " The missing memristor found”.

• Built from Titanium dioxide with cross bar structure.

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Development of TiO2 memristor

Rehabilitation

TiO2-x

TiO2

Initially there are two levels, one

somewhat depleted of Oxygen atoms,

other non-depleted layer.

The depleted part has very much

lower level of resistance than the nondepleted layer.

Equivalent circuit

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Working of TiO2 memristor

Tio2-x

Tio2

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Ron

Roff

Functioning as a switch

Off express (high resistance)

On point out (low resistance)

0

one particular

Positive direction-close the switch.

Negative direction-open the switch.

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Memristor structure

Crossbar mixture

An atomic force microscopic lense image of an easy circuit with 17 memristors lined up within a row. Every single memristor includes a bottom line that contacts a single side of the device and a top cable that contacts the other side. The devices work as 'memory resistors', with the resistance of each device depending on the sum of demand that has shifted through every one. The wires from this image happen to be 50 nm wide, or perhaps about 150 atoms as a whole width.

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Crossbar array

• Array of perpendicular wires.

• Anywhere two perpendicular

wire connections cross, there is a switch

connecting...

References: Chua (1971)

 " Memristive Devices and Systems" in the

Proceedings in the IEEE by Leon Chua and his

pupil Sung Mo Kang (1976)

 " The lacking

(may2008)

Sally Adee (may 2008)

 IEEE Spectrum - How We Found the Missing

Memristor, by L. Stanley Williams (dec 2008)

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