THE CHAIRMAN of Temple University’s physics department, a world-renowned expert in a complex field that most people know nothing about, has been indicted for fraudulently obtaining key technology to help associates in his native People’s Republic of China.

Xiaoxing Xi, 47, of Penn Valley, is a whiz in the field of superconductivity, the ability of something to allow electricity to flow through it easily – especially at very low temperatures – which can boost the performance and efficiency of certain technology like MRI machines.
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