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prof.dr.ir. L. Abelmann (Leon)

Professor

About Me

My expertise lies in magnetostatics on the micro- and nanoscale. As a PhD student and postdoc, I worked mainly in the area of magnetic data storage, moving from tape recording to magnetic force microscopy, magnetic patterned media and probe storage. When the magnetic recording industry left Europe entirely, I changed my research field towards magnetostatics in combination with fluids.

Personal page

Expertise

Engineering & Materials Science
Bacteria
Magnetic Fields
Mems
Microfluidics
Self Assembly
Chemistry
Magnetic Field
Magnetic Particle
Physics & Astronomy
Self Assembly

Research

I currently address two main fields.

Magnetism in life sciences

Magnetotactic BacteriumMagnetism combines well with organisms, since magnetic fields penetrate in most aqueous solutions and hardly interact with bio-chemical processes. Magnetic fields can for instance be used to apply forces and torques (using either magnetic particles or non-magnetic particles in magnetic fluids), to heat magnetic particles by induction or to detect their presence. My research team combines magnetic fields with microfluidic systems to study fundamental behavior of magnetic particles in solutions, or non-magnetic particles in magnetic solutions and to apply this in life sciences. Of special interest are magneto-tactic bacteria, which are self-propelling and can be controlled without having to apply large magnetic field gradients. We study manipulation of individual magneto-tactic bacteria inside micro-fluidic systems as model systems for future self-propelled medical micro-robots.

Magnetically assisted three-dimensional self-assembly

Self-assembled memoryAs mind-blowing as the achievements of lithography based micro-fabrication may be, the techniques remain essentially two-dimensional. In MEMS, this severely limits our design capabilities, especially for out-of-plane structures. In micro-electronics and data storage we will hit a fundamental limit on miniaturisation when the size of bits or electric connections reaches atomic dimensions. The only way forward is towards the third dimension, and in my opinion three-dimensional self-assembly is the only viable option on the long term. In self-assembly, the properties of the individual particles determine the final structure of the assembly. In my team, we use magnetism to tailor the interacting forces between particles, using either magnetic particles or non-magnetic particles in magnetic fluids. We transfer fundamental knowledge obtained at the millimeter scale to the micro- and nano-domain, and are especially interested in particles with low symmetry.

Research video's

  

 

Publications

Recent
Song, S. H., Yoon, J., Jeong, Y., Jung, Y. G. , Abelmann, L., & Park, W. (2021). Quantifying and dispensing of magnetic particles in a self-assembled magnetic particle array. Journal of magnetism and magnetic materials, 539, [168341]. https://doi.org/10.1016/j.jmmm.2021.168341
Groenhuis, V., Rolff, G., Bosman, K. , Abelmann, L. , & Stramigioli, S. (2021). Multi-Axis Electric Stepper Motor. IEEE Robotics and automation letters, 6(4), 7201-7208. [9484841]. https://doi.org/10.1109/LRA.2021.3097077
O'Connor, J. S., Kim, H., Gwag, E. , Abelmann, L., Sung, B., & Manz, A. (2021). 3D Printing for Microgel-Based Liver Cell Encapsulation. In 34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021 (pp. 1023-1026). [9375385] (IEEE International Conference on Micro Electro Mechanical Systems (MEMS); Vol. 2021). IEEE. https://doi.org/10.1109/MEMS51782.2021.9375385
Sung, B., Kim, M. H. , & Abelmann, L. (2021). Magnetic microgels and nanogels: Physical mechanisms and biomedical applications. Bioengineering and Translational Medicine, 6(1), [e10190]. https://doi.org/10.1002/btm2.10190
Sung, B., Yan, H., Kim, C. , & Abelmann, L. (2020). Inhomogeneous nematic-isotropic phase transition of a thermotropic liquid crystal doped with iron oxide nanoparticles. Physics Letters, Section A: General, Atomic and Solid State Physics, 384(36), [126927]. https://doi.org/10.1016/j.physleta.2020.126927
Other Contributions

UT Research Information System

Google Scholar Link

Education

Leon Abelmann was very active in education in the Electrical Engineering and Advanced Technology programs, as well as the Honours Program of the University of Twente. He was nominated teacher of the year for Electrical Engineering from 2002 to 2011, only interupted in 2010, and was recipient of the price in 2005. He received the best teacher award for the Advanced Technology bachelor program in 2010, and the award for excellent education by the TNW department in 2012.

Education pages

Affiliated Study Programmes

Bachelor

Courses Academic Year  2021/2022

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.
 

Courses Academic Year  2020/2021

Contact Details

Visiting Address

University of Twente
Faculty of Electrical Engineering, Mathematics and Computer Science
Carré (building no. 15), room C3435
Hallenweg 23
7522NH  Enschede
The Netherlands

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Mailing Address

University of Twente
Faculty of Electrical Engineering, Mathematics and Computer Science
Carré  C3435
P.O. Box 217
7500 AE Enschede
The Netherlands

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