Their research has just been published in the journal Science.
Particles cannot normally pass through walls, but if they are small enough quantum mechanics says that it can happen. This occurs during the production of radioactive decay and in many chemical reactions as well as in scanning tunnelling microscopes.
According to team leader, Professor Jeremy Baumberg, “the trick to telling electrons how to pass through walls, is to now marry them with light”.
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Reproduced courtesy of the University of Cambridge
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