SuperConductor Poster Presentation , Physics-1 ,AIUB

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1. Superconductors
Group Members : Md. Muijul Hoque Azad Mahid (25-60753-1) CSE
American International University Bangladesh (AIUB)
FACULTY OF SCIENCE & TECHNOLOGY
Department of Physics
Course : Physics-1
Supervised By : DR. MD. MOZAHAR ALI
Real-World Application
Discovery & History
The Future of Superconductors
Introduction
What Is a Superconductor?
Heike Kamerlingh Onnes
Discovered in 1911
A superconductor is a special material that
can conduct electricity without any
resistance when cooled below a certain
critical temperature.
Fun Fact: If copper wires were replaced by superconductors, we could
eliminate power loss in transmission lines!
1911 : Heike Kamerlingh Onnes discovered superconductivity in mercury at 4.2 K
while experimenting with cryogenic temperatures.
1933 : The Meissner Effect was observed — superconductors expel magnetic fields.
1986 : Bednorz and Müller discovered high-temperature superconductors, earning
a Nobel Prize.
Timeline Highlights:
•1911 – Discovery
•1933 – Meissner Effect
•1957 – BCS Theory proposed
•1986 – High-Tc superconductors
•2020s – Room-temp superconductivity research
Physics Behind Superconductivity
Why it happens:
•In superconductors, electrons form Cooper pairs.
•These pairs move in a coordinated way, avoiding collisions so no resistance!
The Meissner Effect:
•Superconductors expel magnetic fields from inside unlike regular conductors.
•This is what causes magnetic levitation.
Visual Aid: Diagram showing a magnet levitating
above a cooled superconducting disk.
Types of Superconductors
Type Description Examples
Type I
Pure metals, lose
superconductivity easily
Lead (Pb), Mercury
Type II
Alloys/ceramics, tolerate higher
fields
YBCO, NbTi
High-Tc Superconductors :
•Operate above 77 K (liquid nitrogen temperature)
•Include materials like YBCO and BSCCO
Critical Temperature (Tc) :
The temperature below which a material becomes superconducting.
Reference : Tinkham, M. (2004). Introduction to Superconductivity (2nd ed.). Dover Publications
Superconductors.org. (n.d.). What is a Superconductor? Retrieved from https://www.superconductors.org
•MRI Machines
Superconducting magnets allow safe, strong, and stable imaging.
•Maglev Trains
Magnetic levitation = no friction = ultra-high speeds.
•Particle Accelerators
E.g., CERN uses superconducting magnets to bend proton beams.
•Energy Grids
Efficient power transmission with minimal loss
a dream for renewable energy systems.
Current Research:
•Goal: Superconductors at room temperature and normal pressure
•2020s: Controversial claims (e.g., LK-99, H₃S under pressure)
Impact Potential:
•Revolutionize computing, transportation, power storage, and more.
•Quantum computers may rely on superconducting circuits.
Quote:
“The next generation of technology will ride on the back of superconductors.”
— Journal of Advanced Materials, 2023
Challenges & Limitations
Challenges & Limitations
•Requires extremely low temperatures (costly cooling)
•Brittle ceramic materials (hard to work with)
•Still not viable for all commercial uses
•Room-temp claims need more evidence and reproducibility
Conclusions
Superconductors mark a pivotal advancement in physics with
massive potential. From healthcare to transport, they are already
transforming our world and the journey has just begun.
As research pushes toward room-temperature superconductivity, the
future looks magnetic and resistance-free.
Synthesis of Superconductors
There are two standard methods to prepare a superconductor:
1.Solid-state reaction method
2.Coprecipitation method
Chemical Reaction Example:
Y₂O₃ + BaCO₃ + CuCO₃ → YBa₂Cu₃O₇₋δ + CO₂