The phrase “the world’s smallest violin” is dripping with sarcasm and reserved for disdain, but for some researchers it’s a mark of pride.

The violin is a microscopic image rather than a playable instrument and has not been officially confirmed as the world's smallest violin, the university said.

Physicists have created a "nano-violin" so small that it could fit within the width of a human hair. This is not only good news for anyone feeling sorry for themselves – it also demonstrates the ...