Vinod Agarwal presented a seminar on memristors. Memristors are passive circuit elements that relate charge and magnetic flux. They have memory and can remember the amount of charge that previously flowed through them. Memristors have a pinched structure that changes resistance based on the direction of current flow. Their I-V characteristics are nonlinear and pinched at the origin. Potential applications of memristors include non-volatile memory replacement, performing logic operations, and mimicking brain-like functions due to analog behavior. Benefits include reliability during power interruptions, high density data storage with low energy usage.

1. UNIVERSITY COLLEGE OF ENGINEERING, KOTA
A Seminaar
presentation on
MEMRISTOR
Presented by
Vinod Agarwal
Elect. and Comm. Engg.
Roll no:-09/136

2. Contents:
 Origin of Memristor
 Definition of Memristor
 Memristance
 Structure of Memristor
 Working of Memristor
 I-V characteristic
 Application
Benefits

3. Origin of Memristor:
From symmetry considerations,
there should be one more
basic circuit element, connecting
Charge and Flux:
dφ= M dq
For M=const, this is just
a resistor.
For M=M(q) hysteretic and
memory effects can occur

4. Definition of memristor:
Memristor, the contraction of “Memory+Resistor,
is a passive device that provides a functional relation
between charge and flux .
It is a two terminal device.
It’s not an energy element.

5. Memristance:
 Memristance is a property of an electronic component.
 When charge flows in one direction, its resistance
increases, and if direction is reversed, resistance
decreases.
 When v=0, charge flow stops & component will
‘remember’ the last resistance it had
 When the flow of charge regains, the resistance of the
circuit will be the value when it was last active.

6. Memristance:
M(q) = dΦm/dq
M(q) = [dΦm/dt] / [dq/dt] = V(t)/I(t)
V(t) = M(q(t))I(t)

7. Structure of Memristor:
D=Device length
W=Length of dopant region
TiO2-x TiO2

8. Working of memristor:

9. Current-Voltage characteristic:

10. Applications:
 As a switch
 As a non volatile memory
 Can perform logic operations

11. Operation as a switch:

12. As a memory unit:

13. As a logic device:

14. Other Applications:
 No need of rebooting
 Replacement of Flash memory
 Memristor as Digital and Analog device
 Could work like human brain

15. Benefits:
 Provide reliability when power is interrupted
 Combines the jobs of Working memory and hard drive
 High Data Storage capacity
 Use less energy and produce less heat
 Operating outside of “0” and “1” allows it to imitate
brain like function

16. Thank you
ANY Queries