WWG provides semiconductor materials like power modules and high power devices that handle the highly efficient control of power, optical devices that deliver the performance required in fibre-optic communication devices, high frequency devices that cover everything from radios and mobile phones and modules that improve interfaces for information. Generally a semiconductor material has an electrical conductivity value between that of a conductor and an insulator. Because the electrical properties of a semiconductor material can be modified by doping, or by the application of electrical fields or light, devices made from semiconductors can be used for amplification, switching, and energy conversion. Semiconductor devices can display a range of useful properties such as passing current more easily in one direction than the other, showing variable resistance, and sensitivity to light or heat. WWG offers material supplies and expert consultation in the semiconductor sector to its clients.