27 May '16, 2pm

UK universities replace magnetics lab with bench-top test

UK universities replace magnetics lab with bench-top test

The work will feed into University of Cambridge research on AlGaN/GaN HEMTs (high electron mobility transistors). 30T magnetic coil at the heart of the system, developed by Professor Hiroyuki Nojiri at Tohoku University (see below) The test in question is cyclotron resonance. In a magnetic field, charged particles in a material start to move in circles around magnetic field lines, and the orbiting particles interact with light differently depending on their mass, concentration, and how easily they can move in the material. By shining light on the material while it is in the field, and measuring the absorption spectrum, these characteristics can be deduced. Table-top sized terahertz cyclotron resonance spectrometer “One of the main obstacles to wide-spread use of cyclotron resonance is that some materials require an extremely high magnetic field to get the charged particles...

Full article: http://www.electronicsweekly.com/news/research-news/unive...

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