Fraunhofer IAF visit

29 January 2019:

CNBP PhD student, Marco Capelli (RMIT) has recently undertaken a three month residency at the Fraunhofer IAF (Institute for Applied Solid State Physics) in Freiburg, Germany.  He reports on his work and collaborative activity there, focused on furthering the measurement of magnetic fields with diamond crystals.

During the months from October to December I worked with the group of Diamond Magnetometry at the Fraunhofer IAF (Institute for Applied Solid State Physics) in Freiburg, Germany.

The group leader Dr. Jan Jeske already collaborated with the CNBP in the past. His group is developing a new technique, building a laser from the fluorescence of diamond and using the enhanced signal to develop a more compact and less expensive diamond device able to perform magnetoencephalography (MEG) with high resolution and sensitivity.

At the Fraunhofer IAF I worked on our common goal of pushing further the ability of measuring magnetic fields with diamond crystals. It was a full collaborative work that put together my knowledge about magnetometry, helping optimising their existing setups and experimental procedures, with their ability to grow diamond samples with specific and tailored characteristics, searching for the best diamond to use.

I was able to compare the sample I previously used in my studies with their diamond samples and study how they differ and which are the best suited for magnetometry. This comparison is still at the beginning and our groups will further collaborate in the near future to get a full understanding of the diamond material.

The work helped me learn and better understand how diamonds can be created, how much they can be ‘customised’ and which parameters to keep in mind when choosing the appropriate diamond to use in my experiments. The students and researchers I met were keen to share their expertise and show me their advanced facilities to grow diamond. In addition it was a great learning experience to work at the institute itself. As the institute is more focused with practical applications and connecting with industry, it was personally interesting to see the differing kinds of management and organisational structures in place there.

Below: Marco (third left) with the  Diamond Magnetometry team.