The effect comes from surface plasmon resonance — electrons on the surface of gold nanoparticles oscillate when hit by light.

The alchemist's dream is to make gold from common metals, but can this be done? The physics needed to explain how to change one element into another is well understood and has been used for decades in ...

Queen Mary University of London provides funding as a member of The Conversation UK. The alchemist’s dream is to make gold from common metals, but can this be done? The physics needed to explain how ...