Peratech has announced a new technology for touch screens that registers pressure as well as the position of a finger. This could provide new ways of interacting with apps for touch screen mobile phones and tablets. Peratech introduced Quantum Tunnelling Composite (QTC), a new class of electrically conductive material developed to advance the capability of switching and sensing systems. QTC is a pressure switching and sensing material technology. QTC could make touch screens thinner, more rugged, and more energy-efficient.

QTC has the unique ability to smoothly change from an electrical insulator to a metal-like conductor when placed under pressure. QTC is a pressure/force sensing material. It can be easily integrated into existing products to enable force sensing opportunities and solutions. QTC material can be directly interfaced to standard electronic and electrical devices.

QTCs can be supplied in various forms to manufacture products. Currently Peratech offers three forms of QTC material, they are Elastomeric, Ink/Coating, and Granule forms. Each form offers different properties to suit the required project application. QTC makes an ideal dynamic force or pressure sensor. In order to use QTC to measure static forces the correct formulation and design is required. Similarly compensation for factors such as temperature and other external factors may be required. QTC is not designed to replace strain gauges in weighing applications.

Multi-Touch Screen & Trackpad for Smartphones & Tablet PC/LaptopsMultitouch screens can be made using QTC technology for mobile applications such as cell phones, mobile phones, laptops, tablet PC, smartphones, etc. Multitouch screens can sense both the position and pressure of the touch on the screen. QTC touch screen is embedded around the edge of LCD screens to detect simple XY position. QTC used within mobile devices for a range of user inputs – for low cost, non mechanical pressure sensing buttons, trackpad wheel capable of recognizing swipe, stroke gestures.

QTC Trackpad for mobile devices or laptops can detect multiple gestures and pressures as well as having the single sensor work as multiple input peripheral, i.e. drawing, writing, pressing. QTC integrated in stylus to offer easy scroll by finger strokes and left or right functions all from one strip of material.