Roderich Wallrath and Fabian Marischen started their research into sputter technology in a workshop at Gerresheimer Essen last August 2014.

On March 25 the two students from Erkrath presented their project at this year’s national “Jugend forscht” young science and technology contest and were awarded third place in the Technology category by the judges.

The project involved the use of sputter technology to apply a coating to glass so that it automatically adapts to the prevailing lighting situation. This was the only “Jugend forscht” project to involve glass. 96 young researchers presented 52 projects to the “Jugend forscht“ Foundation, which was founded 50 years ago.

Roderich Wallrath and Fabian Marischen started work on their sputter technology research project in a Gerresheimer Essen workshop last August. The two young researchers were supported by Gerresheimer’s experts throughout the entire project.

They assisted whenever they could, sharing their glass expertise when needed and helping the two young students to resolve technical problems. On March 5 Roderich and Fabian, both students of Chemical Engineering, won the Regional Contest and on March 25 they came third in the category of Technology in the national competition of North Rhine-Westphalia “Jugend forscht”.

The two students work as a team. “When we started off we both had the same level of knowledge in all areas of the project. Over time, though, we divided up the work and specialised in different areas,“ explained Mr Wallrath, adding that he designed the system with CAD software before the components were made.

Then Mr Marischen optimised the whole thing. Despite this division of labour they always discussed every step of the project to ensure that each knew what the other was doing.

Sputter technology

Sputtering is the process of depositing a thin coating on the surface of glass or another substrate. The coating itself can be composed of any metal, alloy or oxide and it is applied in a vacuum chamber containing a small quantity of inert gas. The inert gas atmosphere in the chamber is regulated by a valve.

A negative charge is then applied to the material that will be deposited onto the substrate, causing the plasma to glow. It is comparable to the principle of a neon light.

Electrical current and voltage cause positively charged ions which break out source material diffusing it into the plasma environment. This process takes place at a much slower pace in the neon light, where the plasma glow first appears at one end of the tube.

The free particles of source material are then deposited on the glass, a process which can be optimised if the glass is placed next to the electrode. Sputtering can be used to deposit incredibly thin coatings in the nanometer range.

The project has now closed and Mr Wallrath and Mr Marischen have gone back to their studies. Both of them are doing degrees in chemical engineering and aiming for careers in the chemicals and pharmaceuticals industries.

Pictured: Fabian Marischen, Roderich Wallrath and Volker Knoth from Gerresheimer (l-r) are delighted that the project closed out successfully and about coming third in the “Jugend forscht“ contest.