Project A2

Hybrid Magnetoelectric Sensors Based on Mechanically Soft Composite Materials

The aim of the project A2 is to design, fabricate, and characterize mechanically soft magnetostrictive and piezoelectric composite materials and hybrid magnetoelectric (ME) sensors made thereof. In this approach the magnetic field energy is transferred nearly completely to charge separation in the equally soft piezoelectric phase. Hence, the restoring forces for the magnetostrictive expansion will be mostly due to the coulomb potential arising from the charge separation. Thus, the project aims for a limit of detection (LOD) < 1 pT/Hz^1/2 at low frequencies < 30 Hz without high quality resonators which limit the bandwidth.

Role within the Collaborative Research Centre

The Project A2 uses a combination of new hybrid materials. This facilitates the construction of sensor concepts that differ much from the conventional concepts in this CRC. This might help to circumvent limitations of the conventional concepts. This project is part of the focus group F1 “Modeling” and of the focus group F2 “Sensor Concepts”.

A1:	Collaboration regarding the noise analysis and noise reduction (strong collaboration).
A3:	Collaboration concerning MEMS compatibility and fabrication (strong collaboration).
A4:	Collaboration with regard to the sensor readout, ΔE-effect of sensors.
A6:	TEM investigations of the samples.
A8:	Collaboration in the modeling of the sensors.
B1:	Collaboration with regard to noise analysis and noise reduction (strong collaboration).
B2:	Collaboration with regard to noise analysis and noise reduction (strong collaboration).
B7:	Use of magneto-active polymers, without magnetic particles, as tissue materials.
Z1:	Collaboration concerning MEMS compatibility and fabrication (strong collabration).
Z2:	Collaboration in the sensor characterization.

Project-related Publications

S. Schröder, O. Polonskyi, T. Strunskus and F. Faupel. Nanoscale gradient copolymer films via single-step deposition from the vapor phase. Mater. Today, article in press (2020). DOI: 10.1016/j.mattod.2020.02.004

M. H. Burk, S. Schröder, W. Moormann, D. Langbehn, T. Strunskus, S. Rehders, R. Herges and F. Faupel. Fabrication of Diazocine-Based Photochromic Organic Thin Films via Initiated Chemical Vapor Deposition. Macromolecules 53, 1164 (2020). DOI: doi.org/10.1021/acs.macromol.9b02443

M. Scharnberg, S. Rehders, Ö. Adiyaman, S. Schröder, T. Strunskus and F. Faupel. Evaporated electret films with superior charge stability based on Teflon AF 2400. Org. Electron. 70, 167 (2019). DOI: 10.1016/j.orgel.2019.04.016

S. Schröder, T. Strunskus, S. Rehders, K. K. Gleason and F. Faupel. Tunable polytetrafluoroethylene electret films with extraordinary charge stability synthesized by initiated chemical vapor deposition for organic electronics applications. Sci. Rep. 9, 2237 (2019). DOI: 10.1038/s41598-018-38390-w

M. Mintken, M. Schweichel, S. Schröder, S. Kaps, J. Carstensen, Y. K. Mishra, T. Strunskus, F. Faupel and R. Adelung. Nanogenerator and piezotronic inspired concepts for energy efficient magnetic field sensors. Nano Energy 56, 420 (2019). DOI: 10.1016/j.nanoen.2018.11.031

Oral C. Aktas, S. Schröder, S. Veziroglu, M. Z. Ghori, A. Haidar, O. Polonskyi, T. Strunskus, K. K. Gleason and F. Faupel. Superhydrophobic 3D Porous PTFE/TiO2 Hybrid Structures. Adv. Mater. Interfaces 6, 1801967 (2019). DOI: 10.1002/admi.201801967

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Project A2

Hybrid Magnetoelectric Sensors Based on Mechanically Soft Composite Materials

Involved Researchers A2

Role within the Collaborative Research Centre

Project-related Publications

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