Quantum tunnelling composites (QTCs) are composite materials of metals and non- conducting elastomeric binder, used as pressure sensors. They use quantum tunnelling: without pressure, the conductive elements are too far apart to conduct electricity; when pressure is applied, they move closer and electrons can tunnel through the insulator.

QTC is a material made from particles of a metal (nickel) embedded in a polymer. Its resistance changes dramatically when it is compressed. Uncompressed, it is an almost perfect electrical insulator. When a force is applied, it conducts as well as a metal. A QTC ‘pill’ is a small piece of the material, a few millimetres across and 1 mm thick.

2010年11月1日 · Quantum tunnelling composites, or “QTCs”, are polymer matrix composites (elastomeric) filled with metal particles and were discovered by the scientist David Lussey in 1997, when he was trying to develop an electrically conductive adhesive.

QTC is Quantum Tunnelling Composite, a remarkable new material discovered by David Lussey in 1997. Since then, the material has been carefully characterised (to understand its composition and how it works), and its first applications have emerged. In this article, David Bloor of Durham University describes how QTC was discovered,

Polymers are large or macromolecules consisting of the same subunit repeating itself. However, in one area of quantum materials, quantum tunneling composites (QTCs), quantum polymers are being studied and applied today.

2018年8月20日 · How Quantum Tunneling Composites works? First produced in 1996, the Quantum Tunneling Composite (QTC) is a composite material made from micron-sized particles conductive filler particles combined with a non-conducting …

2012年12月1日 · The QTC material has the ability to transform from being a perfect insulator to a metal-like conductor, when placed under sufficient pressure. If we compare, traditional materials with QTC materials the major difference between the two is the way in which conducting particles are placed inside the material.

2023年4月3日 · Quantum tunneling composite (QTC) is a type of material that has been developed to detect touch and pressure through an electrical signal. It is composed of a film of carbon nanotubes and a polymer substrate, allowing it to be very thin and flexible.

‘Quantum tunnelling composites (or QTCs) are composite materials of metals and non-conducting materials, used to produce pressure sensors’. QTC can be used to make membrane switches like those used on mobile phones, pressure sensors and speed controllers. What is QTC? QTC material is a pressure/force sensing material.

2012年1月1日 · QUANTUM TUNNELLING COMPOSITE (QTC) is a material that is being developed to address some of the ongoing challenges of creating a better touch technology. QTC is made from a polymer that has nanoscale conductive particles, each characterized by a “spikey” surface structure, evenly distributed throughout (Fig. 1 ).