POWER SYSTEMS ANALYSIS
Course instructor: FAIZ, RETHWAN
Room – 245
Quantum Tunneling Composite
Ahsan, Md. Ashraf Ul
Chowdhury, Mukit Ahmed
What is QTC
QTC in brief
Simple QTC implementations
Advantages of using QTC
QTC (Quantum tunneling composite) is a flexible
polymer that exhibits extraordinary electrical
properties. In its normal state it is a perfect insulator,
but when compressed it becomes a more or less
perfect conductor and able to pass very high
Electron microscope image of QTC
What is QTC??
Quantum Tunneling Composite is a new class
of electrically conductive material
QTC Material is a patented technology
developed in the UK by Peratech Limited
based on original discoveries by David and
Chris Lussey, the company's founders.
First produced in 1996.
While in an unstressed state the QTC Material
is a near-perfect insulator; with any form of
deformation the material starts to conduct
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
The sheets are composed of one layer of QTC, one
layer of a conductive material, and a third layer of a
While QTC sheets switch quickly between high and
low resistances, QTC pills are pressure sensitive
QTC material is a pressure/force sensing material.
Can be formed or molded into virtually any size,
thickness or shape.
Simple and reliable to use.
Durable - it has no moving parts to wear out.
Can be made to withstand extreme temperatures
Versatile, both electrically and physically
e.g. Its range and sensitivity can be
Intrinsically safe - the material is a
contactless switch, ideal for spark free
Can be directly interfaced to standard
electronic and electrical devices
Can be customized for customer
requirements, applications and products.