Humboldt-Prize for IRIS Young Reseracher Aron Vanselow

Award for one of the best 2020 Masters theses at the Humboldt-Universität zu Berlin

The prize, which is awarded annually to only a few of M.Sc. Students of the entire University for “excellent academic achievements” that are moreover especially related to the “Humboldtian Ideals”, honours the thesis of Mr. Vanselow on “Mid-infrared frequency-domain optical coherence tomography with undetected photons”. The corresponding publication is published in the latest issue of Optica, The Optical Society's journal for high-impact research, and is displayed as an IRIS Adlerhof research highlight:

Frequency-domain optical coherence tomography with undetected mid-infrared photons
A. Vanselow, P. Kaufmann, I. Zorin, B. Heise, H. M. Chrzanowski, S. Ramelow
Optica 12 (2020) 1729, DOI:10.1364/OPTICA.400128

Mr. Vanselow did his work in the group “Nonlinear Quantum Optics”, led by Dr. Sven Ramelow, who is a Young Research Group Leader of IRIS Adlershof. It's already the second award for his thesis after the "Quantum Futur Award".

IRIS Adlershof warmly congratulates the young award winner.


Interview with the "Magician of the Octonions" in the Adlershof Journal

Nichol Furey has been researching at IRIS Adlershof for half a year and turns to the fundamentals of quantum field theory with an unusual approach. In the current issue of the Adlershof Journal, she explains how she would like to find the 'theory of everything'

to the online article...


Xolography as new volumetric 3D printing method

It looks like science fiction but in fact could be the future of 3D printing: A blue slice of light wanders through a liquid, while light projections emerge through the window of a glass vessel. Resembling the replicator of the Star Trek spaceships, the desired object materializes. What used to take hours soon floats in the liquid in the vessel, is then removed, and cured under UV light.

The underlying process – xolography – was developed by a team led by chemist Stefan Hecht from IRIS Adlershof, physicist Martin Regehly, and the founder Dirk Radzinski in the startup company xolo GmbH in Berlin Adlershof over the past two years. For the first time, they now describe their unique method in the renowned journal Nature.

Their invention is based on Hecht’s specialty: photoswitchable molecules, which only at the intersection (xolography) of light rays of two different colors allow precise curing of the starting material in the entire volume (holos). In combination with a new printing process (xolography) based on a laser-generated light sheet and projected cross-sectional images, the desired objects are generated from virtual 3D models.

In contrast to conventional 3D printing, in which the objects are created layer by layer, the advantages of xolography are the significantly higher build speed that is due to the higher efficiency of combining two linear one-photon processes as opposed to non-linear two-photon stereolithography. The faster build speed does not compromise for resolution and thus smooth surfaces can be created. Moreover, fully assembled multicomponent systems can be fabricated in just one step.

Hecht is amazed “to see how fast this has been moving from an idea to xolo’s first prototype printer, the XUBE. Working in a highly interdisciplinary team including chemists, physicists, materials scientists, and software developers with a clear focus and dedication, we have been able to develop xolography as a powerful new method.” He is excited about the many opportunities ahead: “The beauty is our method’s versatility as we can print hard as well as soft objects. This should have major implications for the future manufacturing of optical, (micro)fluidic, and biomedical devices.”“

Xolography for linear volumetric 3D printing
M. Regehly, Y. Garmshausen, M. Reuter, N.F. König, E. Israel, D.P. Kelly, C.-Y. Chou, K. Koch, B. Asfari, and S. Hecht
Nature 588 (2020) 620, DOI: 10.1038/s41586-020-3029-7


The Institute of Physics of the Chinese Academy of Sciences (IOP) and IRIS Adlershof start a joint PostDoc program

The Institute of Physics (IOP) of the Chinese Academy of Sciences (CAS) and the IRIS Adlershof of the Humboldt University in Berlin have now established a joint PostDoc program and launched a first round of applications. The prestigious two-year research fellowships are intended for exceptional early-career scientists, in preparation for an independent career in research at the frontier of condensed matter physics, quantum materials or device physics. Successful candidates will spend one year in Beijing and one in Berlin at the research groups of their choice. The application deadline is February 28, 2021.



German Centre for Mathematics Teacher Education (DZLM) will be sustained

The German Centre for Mathematics Teacher Education (DZLM) will be a part of the newly established department “Subject-related knowledge transfer” at the Leibniz Institute for Science and Mathematics Education (IPN) in Kiel. The DZLM is a network of nine universities under the direction of the Humboldt-Universität zu Berlin. For ten years it has been developing, implementing and researching nationwide effective offers for further education for multipliers, teachers and daycare specialists in mathematics. The DZLM was initiated by the Deutsche Telekom Stiftung, from which it has so far been financed with more than ten million euros.

"The work of the DZLM has shown that advanced trainers need far more skills than just being very good teachers in their subjects," explains the previous director of the DZLM and future director of the new IPN department, Professor Jürg Kramer, who is also a member of IRIS Adlershof. “Our approach is therefore to qualify further trainers not only in terms of further training methodology and adult pedagogy, but also very specifically on subject-specific questions relating to the content and learning processes of teachers in further training. In this way, they are much better able to support teachers and educational specialists effectively in their daily work. We are very pleased that we can now continue this work at the IPN "

IRIS Adlershof warmly congratulates and looks forward to continued good cooperation.



Berlin becomes a center for national high-performance computing

The Joint Science Conference of the federal and state governments (GWK) is establishing a total of eight centers for “National High-Performance Computing” (HPC), one of them in Berlin. To this end, the Zuse-Institute Berlin (ZIB) was approved for funding as the centre for scientific computing of the Berlin University Alliance (BUA), the cluster of excellence comprising of the three major universities Freie Universität Berlin, Humboldt-Universität zu Berlin, Technische Universität Berlin as well as the Charité – University Hospital Berlin. Prof. Alexander Reinefeld, scientific director at the Zuse-Institute and member of IRIS Adlershof delightedly says: „The funding to the tune of approximately 72 million euros affords the Zuse-Institute planning security for the acquisition, modernisation and operation of HPC systems for the next ten years, of which the university research, in particular in Berlin and therefore at IRIS Adlershof, will surely profit.“ He adds, „that the financial support provided by the state of Berlin and the Federation will also be used to provide expert counseling to make the efficient usage of the complex supercomputers easier for the scientists.“

IRIS Adlershof cordially congratulates and is looking forward to continued fruitful collaboration.