Xu Bing used Ground Zero dust to create his prize-winning work. Sunday he became the first winner of a new £40,000 award for visual artists.
He was awarded the Artes Mundi (Arts of the World) Prize for the specially-commissioned piece.
Bing, who is from China but now lives and works in America, covered the floor of The National Museum & Gallery in Cardiff, Wales, with the dust he had collected from the September 11, 2001 terror attacks in New York.
The surface of the settled dust was then punctuated by the Chinese verse, "As there is nothing from the first, where does the dust collect itself?"