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MEMRISTOR

What is memristor

Memristor means
Memory Resistor

Memory

+

Resistor

3

Memristor is the “4th fundamental circuit element”

The Symbol of
Memristor

4

Definition of Memristor
• A Memristor is a semiconductor whose resistance

varies as a function of flux and charge
...

• Characterized by Memristance
• Unit - ohm (Ω)
...

When he was a rising professor at
The University of California
Berkeley
...
O
...
Stanley Williams

created the first working
Memristor at

labs
...


10

How Memristor Work?
• “Like the transistor, the memristor is a 3-terminal

element
...
”

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2 nm

(-)ve

PT

TiOv(2-x)

PT

(+)ve

TiO2
3 nm
Reduced

Oxidized

Applied voltage makes the oxygen vacancies
(+ve) to shift towards the (–ve) voltage
...

• It will save its electronic state when

power is OFF
...


Future of Memristor

Nonvolatile memories
• Memristor Can remember how much current
has gone through it
...


Memristor allows greater speed and density
(9 nm in size)
...


21

• Solid-State Memristors can be

combined into devices called
crossbar latches which is the main
feature of current transistors
...


22

DRAWBACKS
• The models do not take into account memcapacitive

effects
...

• The models do not properly distinguish the internal and

external electric field
...

But Memristor will have to wait a few years for an
application like transistor which had to wait almost after
it’s invention
...
”

Any queries

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