| 20 Jul 2018 |
Synthesizing the Materials of the Future
Jülich, 16 Juli 2018 – How can materials be synthesized and processed more easily using electric and magnetic fields? A team of researchers from six German universities and research institutions headed by Jülich materials scientist Olivier Guillon summarize the current state of research in this field.
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"Manipulation of matter by electric and magnetic fields: Toward novel synthesis and processing routes of inorganic materials",
Materials Today, by Olivier Guillon, Christian Elsässer, Oliver Gutfleisch, Jürgen Janek, Sandra Korte-Kerzel, Dierk Raabe, Cynthia A. Volkert,
DOI: 10.1016/j.mattod.2018.03.026
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| 28 Jun 2018 |
Magnetic skyrmions: Not the only ones of their class
Jülich, 28 June 2018 - Tiny magnetic vortex structures, so-called skyrmions, have been researched intensively for some time for future energy-efficient space-saving data storage devices. Scientists at Forschungszentrum Jülich have now discovered another class of particle-like magnetic object that could take the development of data storage devices a significant step forward. If skyrmions are used to encode the number "1", then the new objects could be used to encode the number "0".
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Experimental observation of chiral magnetic bobbers in B20-type FeGe
Fengshan Zheng, Filipp N. Rybakov, Aleksandr B. Borisov, Dongsheng Song, Shasha Wang, Zi-An Li, Haifeng Du, Nikolai S. Kiselev, Jan Caron, András Kovács, Mingliang Tian, Yuheng Zhang, Stefan Blügel, Rafal E. Dunin-Borkowski
Nature Nanotechnology (published online 9 April 2018) DOI: 10.1038/s41565-018-0093-3
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| 28 Jun 2018 |
Materials Research for Energy-efficient Magnetic Cooling
Jülich, 27. June 2018 - Jülich scientist Nikolaos Biniskos together with his colleagues in a Franco-German research team has gained new insights into the inverse magnetocaloric effect with the help of neutron scattering studies. The results could be useful in the search for suitable magnetocaloric materials for energy-efficient heating and cooling systems.
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N. Biniskos et al.; Spin fluctuations drive the inverse magnetocaloric effect in Mn5Si3;
Phys. Rev. Lett. 120, 257205 – Published 22 June 2018,
DOI: 10.1103/PhysRevLett.120.257205
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| 22 Jun 2018 |
Conductive or Not – Measuring Nanoswitches for Future Computers with Atomic Precision
Jülich, 22 June 2018 – A team of German and Polish scientists at Forschungszentrum Jülich has for the first time imaged the conductivity of metal oxide surfaces with atomic resolution. Using the new technique, innovative materials for information processing can be investigated and identified more easily. The oxide materials should help computers become more powerful and energy-efficient in future. Unlike other methods, the local-conductivity atomic force microscopy (LC-AFM) method used by the researchers can also be applied to surfaces with weak or inhomogeneous conductivity, which are typical of the material class.
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C. Rodenbücher et al., Local surface conductivity of transition metal oxides mapped with true atomic resolution,
Nanoscale, 2018, Advance Article, first published on 17 May 2018,
DOI: 10.1039/C8NR02562B.
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| 14 May 2018 |
PICO brings Magnetism to Light at the Atomic Scale
Jülich, 14 May 2018 - Scientists at Forschungszentrum Jülich, RWTH Aachen University and Tsinghua University in Beijing, China, together with partners from Sweden and Japan, have developed a new method for imaging the magnetic structure of individual atomic layers in the interior of a material. They used the ultra-high-resolution PICO electron microscope in the Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C) at Forschungszentrum Jülich to perform the measurements. The results have been published in the journal Nature Materials.
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Z. C. Wang, A. Tavabi, L. Jin, J. Rusz, D. Tyutyunnikov, H. B. Jiang, Y. Moritomo, J. Mayer, R. E. Dunin-Borkowski, R. Yu, J. Zhu, and X.Y. Zhong
Atomic scale imaging of magnetic circular dichroism by achromatic electron microscopy
Nature Materials (2018), DOI:10.1038/s41563-017-0010-4
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| 10 Apr 2018 |
Structural Processes in Adaptive Hydrogel Determined for First Time
Jülich/Aachen, 11 April 2018 – Scientists from Forschungszentrum Jülich and RWTH Aachen University have been able to determine the structural processes in an adaptive hydrogel for the first time. With the aid of X-ray scattering experiments and computer simulations, they were able to show the changes in size and structure of the hydrogel in reaction to external stimuli. The results could lead to new applications in technology and medicine.
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"Time-resolved structural evolution during the collapse of responsive hydrogels: The microgel-to-particle transition"
Rico Keidel, Ali Ghavami, Dersy M. Lugo, Gudrun Lotze, Otto Virtanen, Peter Beumers, Jan Skov Pedersen, Andre Bardow, Roland G. Winkler, Walter Richtering
Science Advances, 06 Apr 2018, Vol. 4, no. 4, eaao7086, DOI: 10.1126/sciadv.aao7086
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| 23 Jan 2018 |
Supercomputers Shed Light on the Cause of Alzheimer’s
Forschungszentrum Jülich, 23 January 2018 – Deposits from certain protein building blocks – amyloid beta (Aβ) – are viewed as a typical sign of Alzheimer’s disease. How these amyloid plaques are formed exactly has yet to be explained in detail, however. Using computer simulations, Jülich researchers have now been able to demonstrate that the form and distribution of intermediate products in the formation process, known as oligomers, play an important role in the "clumping" of proteins.
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Pathways of Amyloid-β Aggregation Depend on Oligomer Shape
Bogdan Barz, Qinghua Liao, and Birgit Strodel
Journal of the American Chemical Society 2018 140 (1), 319-327, DOI: 10.1021/jacs.7b10343
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