Johannes presented recent progress on the newly develeoped setup for the magnetic assessment of gait kinematics as it was recently tested in the clinical motor lab. He also expanded on some learnings from previous setups regarding wiring, current monitoring, and sensor protection.

Fatih presented results from hard biased and exchange biased test structures. Problems and possible solutions about hard biased films were discussed.

In Martha's talk some of the newly learned tools from the project management course were presentend. Personal experience and recommendations of the participants were added.

The current plan of the data management group about metadata management was presented and discussed. Problems and opportunities in including a basic metadata shema in eveyones workflow were brought up. A first possible implementation of an automatization in mathlab was proposed.

introduction to high performance computing in general and at CAU computing center; live demonstration of small python example at nesh cluster; discussion about capabilities of high performance computing

A quick start guide to the freeware program blender was given to have a starting point for 3D graphis for scientific posters, papers, presentation or the thesis. Therefore, a BMM cantilever 3D graphic/animation was done live in blender.

In his talk, Johannes elaborated on the fundamental capabilities, requirements and limitations for the use of matched filters in CRC-related applications. Therefore, he shortly described the “ingredients” for this approach which are autocorrelation, multiplication theorem and time-bandwidth-product.

Thermography measurements were presented, which show that heat is generated in the SAW device during excitation. This temperature increase is proportional to the increase in excitation power and can be a potential influence on phase noise. Additionally, the increase in temperature varies with the magnetic state in the exchange biased films. The identification of different noise contributions in exchange biased SAW sensors is a key goal for the rest of the funding period. Furthermore, magnetic flux concentrators were introduced to a exchange biased SAW sensor, which improved the sensitivity by a factor of 4. The reduction of LOD through flux concentration is by a factor of 2, since the metglas layers used for flux concentration also add magnetic noise.

An introduction to a new concept idea was given. To reduce magnetic noise permanent magnets could be used as the magnetic component. Additionally the noise behaviour of the current sensor was shown and shortly discussed.

• Poster presentation at next retreat
• Git access
• Update: Summer school

In Fatih’s talk, he introduced the new impedance measurement setup. He showed the magnetic and the electrical sensitivities at different resonance modes of various sensors. He also presented the comparison of the simulations and the vibrometer measurements of resonance mode shapes.

• Info: Comsol lecture planned for next semester
• Info: Matlab course available
• Info: Short summary for conferences sponsored by IRTG

The Kiel Cardio Database currently consists of OPM-MCG measurements from seven patients. We plan to expand it in the future to include additional MCG measurements as well as ECG measurements and MRI/CT scans. The database is currently being made available on our website so that other research groups can benefit from our measurements. In addition to the content of the database, Erik also talked about the challenges he encountered during the measurement campaign and how we can provide access to the databases through our website. The goal of this presentation was to show the graduate students what to consider when creating a public database.

• Info on new SOW website section
• Discussion: Switch to online format

The demand for a CRC wide sharing of matlab functions was discussed. Guidelines for creating, maintenance and sharing these in gitlab were established and the first function was uploaded.

• Forming of organization comittee for Heidelberg Trip
• Update on summer school
• Discussion: Poster sessions as new retreat format

In the talk, Johan is presenting the topics related to B1 project. The topics focus on exploring electrical and magnetic methods to reduce the noise in read-out schemes as magnetic flux modulation on SAW sensor, MEMS for frequency conversion and PCB for converse ME composite resonator.

• News on summer event
• News on summer school

Project A1 is confronted with a large variance of tasks for which solutions and results have to be obtained. In the lecture, the main aspects of the deposition of magnetic materials in an applied magnetic field will be presented and discussed. The main focus will be on targets, magnetron and resulting magnetic layers, which will be used for the fabrication of the sensors needed in CRC 1261.

• Mona's absence
• Driver's license
• Upcoming board member election
• Follow up discussion: Research stay abroad

Topic of Marc Alexander's talk was the fabrication of Surface Acoustic Wave Sensors under the aspect of reliable and reproducible sensor characteristics. The focus was on the magnetic layer and possibilities to manipulate and control the orientation of magnetic anisotropy. He reported on the investigations and first results obtained as well the feasibility of anisotropy alignment at desired angles..

PCBs (Printed Circuit Boards) are the foundation of modern electronic circuits. The increasing change in the component market from wired components to SMD components makes the use of plug-in cards and punched circuit boards in the field of research and development increasingly impossible. As a consequence, even for the simplest circuits, it is necessary to layout them using ECAD tools and then to manufacture or order them. In this presentation some essential principles for the design of PCBs will be discussed. In addition, a selection of essential ECAD tools will be presented and the various procurement options for prototype PCBs will be discussed.

• News from Gerhard
• Discussion: Research stay abroad

In this talk, Elizaveta explained the magnetic history's influence on a sample's magnetic state and its performance as a magnetic field sensor. She illustrated the difference between demagnetized and non-demagnetized states using magnetooptical images and showed some nuances considering the correctly performed demagnetization procedure.

• Virtual get together in Gather

In his talk, Johannes listed four challenges regarding a defined operating state for ME sensors in motion analysis and discussed potential solutions. This included electric cross talk (shielding), varying sensitivity (calibration), undefined sensor state (saturation), and mechanical noise (reference sensor).

• Reminder: Financing of conferences
• New concept for international fellowships
• Discussion: Attract international guests for summer school
• Virtual get together in Gather