The world's cleanest water droplet
Thursday, August 23, 2018 - 13:50
in Physics & Chemistry
The 'molecular dirt' found on any surface can change the properties of the material. A new method has been developed to study this. By creating ultra-pure ice in a vacuum chamber and melting it the world's cleanest water drops were created and applied to titanium dioxide surfaces. The 'dirt' turns out to be a single-molecule-thick layer of two organic acids. This is surprising, because only minute traces of these acids are found in air.