Physics Nobel Prize Winners Andrei Geim and Konstantin Novoselov have lost the very thing that won them the accolade.
Geim and Konstantin are the inventors of graphene - a flat sheet of carbon just one atom thick. It is extremely strong and is a good conductor of electricity.
However, as it is so thin it is virtually invisible.
Said a friend of the University boffins: "This is rather embarrassing for the lads.
"Andrei told me they had the stuff just the other day. But he put it down somewhere before they went to the pub, and now they can't find it!
"Konstantin had the same problem a couple of weeks ago, but fortunately that time he'd propped it against the back of a chair in the lab and he tripped over it.
"I'm sure they'll find it. It can't have gone anywhere, unless it has qualities they haven't told us about yet!"