Smallest test tube (open-ended)
David Britz
United Kingdom (Oxford)
The world's smallest test tube is made from a single-walled carbon nanotube measuring just 2 micrometres long and 1.5 nanometres wide, giving an internal volume of only 3.5 zeptolitres (3.5 x10^-21 litres), or a billionth of a billionth or a millilitre. It was created by a team of scientists led by David Britz (UK) from the Department of Materials at Oxford University, Oxford, UK, and published in the journal Chemical Communications in December 2004.