A professor from Nottingham and his team have succeeded in destroying the new five pound note, which was thought to be indestructible.
The new note was brought into circulation last September and people have tried ripping, washing and microwaving the polymer fiver to test its limits, with limited success.
University of Nottingham professor Sir Martyn Poliakoff has found the solution: liquid nitrogen and a lump hammer.
In a clip uploaded to his Periodic Videos series on YouTube, the professor said:
The professor added that he had given his assistant Neil Barnes several of his own notes to use, as "you can't spend university money on things like this".