Highlights in 2019

12/2019Paper featured on the cover page of Small
Here we realize periodic magnetic domain structures in sub-200 nm wide linear as well as curved magnets, embedded within a flat non-ferromagnetic thin film. The nanomagnets are produced within a non-ferromagnetic B2-ordered Fe60Al40 thin film, where local irradiation by a focused ion beam causes the formation of disordered and strongly ferromagnetic regions of A2 Fe60Al40. We study anisotropic lattice relaxation, which generates a magnetic easy-axis parallel to the short axis. The competing effect of the strain and shape anisotropies stabilizes a periodic domain pattern in linear as well as spiral nanomagnets, providing a versatile and geometrically controllable path to engineering the strain and thereby the magnetic anisotropy at the nanoscale.

This work is a result of a fruitful cooperation of the HZDR team with the University of Glasgow and University of Antwerp.

M. Nord, A. Semisalova, A. Kákay, G. Hlawacek, I. MacLaren, V. Liersch, O. M. Volkov, D. Makarov, G. W. Paterson, K. Potzger, J. Lindner, J. Fassbender, D. McGrouther, and R. Bali
Strain Anisotropy and Magnetic Domains in Embedded Nanomagnets
Small 15, 1904738 (2019). URL PDF   

11/2019Paper highlighted in Nature Reviews Materials
Our paper on the realization of bimodal soft electronic skin for tactile and touchless interaction is highlighted in Nature Reviews Materials. The highlight text can be viewed here: URL.

In this work we demonstrate bifunctional e-skins with a single sensory unit able to transduce both tactile and touchless stimulations simultaneously and unambiguously discriminate them in real time. We showcase the potential of our bimodal e-skin in augmented reality settings, where a sensor-functionalized hand performs complex selection and manipulation of virtual objects by using the two sensing modes. We foresee our concept provides a fertile base for a cornucopia of applications in interactive electronics, supplemented reality, human-machine interfaces, but also for the realization of smart soft robotics with highly compliant integrated feedback system as well as in medicine for physicians and surgeons.

This work was carried out in close collaboration with partners at the Johannes Kepler University Linz (Prof. Martin Kaltenbrunner).

The original work is published in Nature Communications 10, 4405 (2019) URL, PDF.

09/2019Paper featured on the front cover page of Advanced Engineering Materials
Our paper on the realization of highly compliant heaters for cancer treatment is highlighted with a front cover page of Advanced Engineering Materials.

In this work, we developed an implantable, highly compliant device for targeted heating of internal organs. The device is fabricated on a 6-µm-thick polymeric foil, which seamlessly conforms even to a soft liver tissue and allows for precisely controlled heating without on-site rigid parts. We study various heat impact scenarios on healthy and cancerous tissues using autochthonous murine models.

This work is the result of a fruitful cooperation between the Helmholtz-Zentrum Dresden-Rossendorf e.V. and Hannover Medical School (groups of Dr. T. Yevsa and Dr. Dr. A. Potthoff).

G. S. Cãnón Bermudez, A. Kruv, T. Voitsekhivska, I. Hochnadel, A. Lebanov, A. Potthoff, J. Fassbender, T. Yevsa, and D. Makarov
Implantable Highly Compliant Devices for Heating of Internal Organs: Toward Cancer Treatment
Adv. Eng. Mater. 21, 1900407 (2019). URL

03/2019Fudan Fellowship grant for Dr. Denys Makarov
Dr. Denys Makarov received a Fudan Fellow grant. He is invited to Fudan University as Fudan Fellow to do his own research and share his knowledge and expertise with Fudan community. Dr. Makarov will work together with the group of Prof. Yongfeng Mei, Department of Material Science, Fudan University, Shanghai, China.

01/2019Paper featured on the back cover page of Physica Status Solidi (RRL) - Rapid Research Letter
Our paper on the experimental and theoretical study of curvature effects in parabolic nanostripes is highlighted with a back cover page of Physica Status Solidi (RRL) - Rapid Research Letter.

In this work we present experimental and theoretical study of curvature-driven changes of static magnetic properties in parabolic nanostripes. We demonstrate the influence of geometrical parameters on the equilibrium magnetic states for the large range of the parabolic stripe geometries. We established experimentally and numerically that the homogeneous magnetic distribution along the parabolic stripe is the equilibrium state for the entire range of investigated geometrical parameters.

This work is the result of a fruitful cooperation between the Helmholtz-Zentrum Dresden-Rossendorf e.V. and Helmholtz-Zentrum Berlin für Materialien und Energie (group of Dr. Florian Kronast).

The original work is published in Physica Status Solidi (RRL) - Rapid Research Letter 13, 1800309 (2019). URL PDF