The Third Man (or woman)?

Congratulations to Shuji Nakamura and co-workers for being awarded the 2014 Nobel Prize for Physics"for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources". Our newsletter editor, John Grange, met with Nakamura several years ago whilst in Japan not long after visiting Leo Esaki at IBM, a previous physics prize winner. He may not manage a hat-trick but it is fun to speculate on who could be candidate number three.