Molecules hitting a surface (IMAGE) Swansea University Caption Overview of the Swansea experimental set up showing the positions of the different magnetic field elements used for controlling and manipulating the rotational orientation of the D2 molecules that collide with the Cu(111) surface. The J = 2 molecules are shown in blue, and the J = 0 in red. Credit Swansea University Usage Restrictions Only use with credit as below License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.