4. What is Quantum Tunnelling
Quantum tunnelling is the quantum
mechanical phenomenon where a particle tunnels
through a barrier that it classically could not
surmount.
Fundamental quantum mechanical concepts are
central to this phenomenon, which makes quantum
tunnelling one of the novel implications of quantum
mechanics
5. What is Composite
An Engineered material made from two or
more constituents with significally different
physical or chemical properties.
What is QTC
Quantum tunnelling composites are composite
materials of metals and non-
conducting elastomeric binder, used as pressure
sensors.
6. History Of QTC
Developed from the study of Radioactivity.
First used to explain alpha decay of heavier
elements in 1928 by George Gamow.
Leo Esaki, Ivar Giaever and Brian
Josephson predicted the tunnelling
of superconducting Cooper pairs, for which they
received the Nobel Prize in Physics in 1973.
7. How does it look
QTC usually comes in the form of pills or sheet
QTC pills are magnetic too. Nothing like having some
magnets laying around on the table while you work.
10. Quantum tunneling
• A QTC in its normal state is a perfect
insulator.
• When compressed it becomes a perfect
conductor
• If only lightly compressed its conductivity is
proportional to the pressure applied.
In normal physics an electron cannot
pass through an insulation barrier . In
Quantum physics theory a wave of
electrons can pass through an
insulator –this is what is happening.
14. QTC Applications
Robotics – Used in
prosthetic limbs to
accurately
determine the
pressure being
applied by the
limbs.
15. QTC Applications
Gaming – QTC is beginning to be used
extensively in game controllers and
computer mice to give greater control.
Electric tools – Used in the handles of
electric tools. Mainly used as a variable
controller and power switches.
17. Benefits are-
OTC material is a contactless switch, ideal for spark free operation.
It is a pressure sensing material.
It is so simple to use in electronic and electrical devices.
It’s rang and sensitivity can be altered.
It can be customized for customer requirements, applications and
products.
It can stand in extreme temperature limit.
Mechanically strong and it has no moving parts to wear out.