The German contribution to the new Belle - II detector is a high - resolution tracker that is at the heart of the device and can very precisely record the tracks left by the generated particles. (sciencedaily.com)
At the heart of those devices sits the most powerful magnet available today — a mix of neodymium, iron and boron, which can produce an energy product of as much as 60 megagauss — oersteds (a unit of magnetic strength). (scientificamerican.com)
The heart of the device is a microscopic sandwich of quantum wells — crystalline films of semiconductors only a few billionths of a meter thick, each with a different electrical conductivity. (sciencemag.org)