1. POWER SYSTEMS ANALYSIS EEE4103 Course instructor: FAIZ, RETHWAN Room 245 Summer 2013 Presentation on: Quantum Tunneling Composite

2. Ahsan, Md. Ashraf Ul Sabrina, Faria Mahmud, Hasan Chowdhury, Mukit Ahmed 3. What is QTC QTC in brief Simple QTC implementations Advantages of using QTC Future prospects 4. 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 currents. Electron microscope image of QTC What is QTC?? 5. 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 6. QTC pills are magnetic too. Nothing like having some magnets laying around on the table while you work. The sheets are composed of one layer of QTC, one layer of a conductive material, and a third layer of a plastic insulator. While QTC sheets switch quickly between high and low resistances, QTC pills are pressure sensitive variable resistors. 7. Simple QTC Implementations 8. QTC Sheet Two probes pressed on the sheet 9. ADVANTAGES Of QTC 10. 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. Mechanically strong. Can be made to withstand extreme temperatures limits. 11. Versatile, both electrically and physically e.g. Its range and sensitivity can be altered. Intrinsically safe - the material is a contactless switch, ideal for spark free operation. Can be directly interfaced to standard electronic and electrical devices Can be customized for customer requirements, applications and products. 12. Future Prospects 13. Mobile Applications Touch screen LCDs Embedded fabric controls used in automobiles Smart-Tex Medical equipments Speed control in simple machines 14. Touch sensor Scrolling Writing Drawing 15. Cheap detector Easy X-Y position detection 16. Operating mirrors, doors and windows Gesture, stroke, swipe and pressure sensing 17. Easy control of devices Pressure controlled conductive surface Switching Can be used to implement circuitries on it 18. Thank you