Organisation: Johannes Gutenberg University > Faculty 08 > Institute of Physics > Condensed Matter Pysics (KOMET) > Amann-Winkel Lab
Research: Johannes Gutenberg University > Faculty 08 > Institute of Physics > Soft Matter & Biological Physics > Amann-Winkel Lab
Water exhibits many fascinating properties, many of which are still not fully understood. Our research involves fundamental studies on water and its hydrogen-bonded network under extreme conditions. This is, we are interested in water and ice at very low temperatures, high pressures and in connection to soft matter systems or confined geometries.
Modern X-ray scattering methods provide us powerful tools to investigate both static structure and structural dynamics, glass- and phase transitions on different length- and timescales. In our lab we have a powder diffractometer as well as a small-angle X-ray scattering setup (SAXS). We are also frequent users of large scale facilities, such as storage rings or X-ray free electron lasers (XFEL).
- Yizhi Liu (Postdoc, now at City University of Hong Kong)
- Siddhanth Shishodia (Master Student, now at University of Vienna)
- Klara Holl (Master student)
- Fiona Berner (Master student, now at MPI-P)
We use a variety of tools in order to investigate water and soft matter under extreme conditions. This section aims to give an overview of our sample preparation, measurement and analysis techniques. This section is still under development.
To prepare amorphous solid water (ASW), which is the most common form of ice in space, water vapor is deposited onto a cold substrate (< 120 K). The vapor deposition occurs in vacuum, while the substrate, here a CaF2 window, is cooled using a liquid nitrogen cryostat (Janis VPF-100). The water vapor enters the chamber from a reservoir via a nozzle. The system is equipped with a linear manipulator that allows us to adjust the angle and distance between the nozzle and the window. The setup allows for in-situ Fourier-transformed infrared spectroscopic studies to determine the structure of the so-prepared ASW.
Using a piston cylinder setup with the ZwickRoell Z100/TL testing machine allows for conducting high-pressure ice experiments. With a maximum applicable force of 100 kN, it is possible to investigate samples at pressures up to 2 GPa. Varying the temperature from approximately 77 K to room temperature can be achieved with a temperature controller (Eurotherm 3508). The combined measurement of applied pressure, temperature and piston displacement makes it possible to characterize phase transitions of ice samples.
This setup is located at the Max-Planck-Institute for Polymer Research
(coming soon)
(coming soon)
2026
Authors: Louisa E. Kraft, Jens Lucht, Fiona Berner, Hannes P. Hoeppe, Tobias Eklund, Yizhi Liu, Markus, Osterhoff, Fabian Westermeier, Wojciech Roseker, Tim Salditt, Hans-Jürgen Butt, Katrin Amann-Winkel
2026
Authors: Tobias Eklund, Christina M. Tonauer, Keishiro Yamashita, Johannes Giebelmann, Lilli-Ruth Fidler, Aigerim Karina, Hailong Li, Louisa Kraft, Fiona Berner, Niels C. Gießelmann, Robert Bauer, Alexander Gierke, Claudia Goy, Marjorie Ladd-Parada, Fivos Perakis, Fabian Westermeier, Felix Lehmkühler, Thomas Loerting. Katrin Amann-Winkel
2025
Autoren: Yun-Hee Lee, Jin Kyun Kim, Yong-Jae Kim, Minju Kim, Yong Chan Cho, Rachel J Husband, Cornelius Strohm, Emma Ehrenreich-Petersen, Konstantin Glazyrin, Torsten Laurus, Heinz Graafsma, Robert PC Bauer, Felix Lehmkühler, Karen Appel, Zuzana Konôpková, Minxue Tang, Anand Prashant Dwivedi, Jolanta Sztuck-Dambietz, Lisa Randolph, Khachiwan Buakor, Oliver Humphries, Carsten Baehtz, Tobias Eklund, Lisa Katharina Mohrbach, Anshuman Mondal, Hauke Marquardt, Earl Francis O’Bannon, Katrin Amann-Winkel, Choong-Shik Yoo, Ulf Zastrau, Hanns-Peter Liermann, Hiroki Nada, Geun Woo Lee
2025
Autoren: Tobias Eklund, Christina M Tonauer, Felix Lehmkühler, Katrin Amann-Winkel
2025
Autoren: Aigerim Karina, Hailong Li, Tobias Eklund, Marjorie Ladd-Parada, Bernhard Massani, Mariia Filianina, Neha Kondedan, Andreas Rydh, Klara Holl, Ryan Trevorah, Simo Huotari, Robert P. C. Bauer, Claudia Goy, Nele N. Striker, Francesco Dallari, Fabian Westermeier, Michael Sprung, Felix Lehmkühler & Katrin Amann-Winkel
2024
Autoren: Cheolhee Yang, Marjorie Ladd-Parada, Kyeongmin Nam, Sangmin Jeong, Seonju You, Tobias Eklund, Alexander Späh, Harshad Pathak, Jae Hyuk Lee, Intae Eom, Minseok Kim, Fivos Perakis, Anders Nilsson, Kyung Hwan Kim, Katrin Amann-Winkel
2020
Autoren: Katrin Amann-Winkel, Kyung Hwan Kim, Nicolas Giovambattista, Marjorie Ladd-Parada, Alexander Späh, Fivos Perakis, Harshad Pathak, Cheolhee Yang, Tobias Eklund, Thomas J Lane, Seonju You, Sangmin Jeong, Jae Hyuk Lee, Intae Eom, Minseok Kim, Jaeku Park, Sae Hwan Chun, Peter H Poole, Anders Nilsson
We are always open for interested students, looking for a Bachelor or Master project. Please contact us if interested.