A pân junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor. The p side contains an excess of holes, while the n side contains an excess of electrons in the outer shells of the electrically neutral atoms there. This allows electrical current to pass through the junction only in one direction. The p-n junction is created by doping, for example by ion implantation, diffusion of dopants, or by epitaxy ...
ITER is an international collaboration to build the first fusion science experiment capable of producing a self-sustaining fusion reaction, as a way of generating a clean, safe, and sustainable power.
iTab Order Information. At Niagara Falls International Marathon Inc., we are proud of our Finisher Medal and want you to feel the same. iTaB is an exciting medal personalization service, which enhances a Finisher Medal with your name and finish time engraved on a small plate that fits neatly into the back of the medal. Your iTaB will be engraved and sent to you approximately 2 weeks after completion of the event. Here is a simple breakdown of the process to order an iTaB: Step 1. You order an iTaB; this may be selected as an option in the online Race registration form, or via their website at www.itab.us.com.