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### Transcript of The Missing Fundamental Element

The missing fundamental element : Memristor

The missing fundamental element

Memristor PRESENTED BY

SAURAV ROY

3 Fundamental Passive CIRCUIT ElementsInductor, L (H)

Capacitor, C (F)

Resistor, R ()

Symmetry Of Relationships

Voltage (V)

Current(i)

Charge (q)

Flux ()

d = LdiInductors??v=d/dti=dq/dt Resistors dv=Rdi dq=CdvCapacitors

Founder of missing element Leon Chua proposed the existence of memristor in 1971.

For all passive memristors the generalized forms are defined as followsWhere x= (x1,x2,x3.xn)denotes n state variables x1,x2,x3..xn which do not depend on any external voltage or current.

Symmetry Of RelationshipsMemristorsd=Mdq

Voltage (V)

Current(i)

Charge (q)

Flux ()

d = LdiInductorsv=d/dti=dq/dt Resistors dv=Rdi dq=CdvCapacitors

Any two terminal devices which exhibits a pinched hysteresis loop in the V-I plane when driven by any bipolar periodic voltage or current waveform, for any initial conditions, is a memristor.It depends on the frequency. The area enclosed within the part of the pinched hysteresis loop in the first quadrant, and the third quadrant, of the vi plane shrinks continuously as the frequency increases, and the hysteresis loop tends to a straight line through the origin as tends to .

A memristor is a semiconductor whose resistance varies as a function of flux and charge. This allows it to remember what has passed through the circuit.

Definition

Memristoris a hypothetical non-linear passive two terminal electrical component relatingelectric charge and magneticflux linkage.

MEMRISTORMEMORYRESISTOR+Memristor

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In 2008 a team lead by Stanley Williams created the first memristor.

As its effect depends on atomic-scale movements, it only poped up on the nanoscale of Williams devices.

For RON