German researchers are working on scaling down the size of the magnets needed to NMR machines, reports Technology Review. RWTH Aachen University's Federico Casanova and his colleagues have made a magnet that "is about the size of a standard D battery and weighs 500 grams," according to Tech Review. As they report in their Angewandte Chemie article, the researchers' design builds off the Halbach array; they stacked three trapezoidal and filled the gaps with rectangular magnetic block. The magnet was able to generate a 0.7 Tesla field. Casanova and his colleagues write that "as the magnet system requires extremely low power, it could be operated in the future with batteries and single-chip electronics, so that high-resolution NMR spectrometers will become portable tools to analyze samples anywhere."
NMR, Anywhere, Anytime
Jun 11, 2010