Dr. Rakesh Joshi and his PhD student Uttam Kumar from the NSWU of Sydney, Australia, are visiting our group to work on a joint research project on water splitting. The idea is to use a combination of graphene membranes and 2D materials which are photocatalytically active. Lukas Madauß and Simon Schumacher from our group are involved in the project.
Mathias Ulbricht and Jens Schumacher attended the ICOM 2017 (International Congress on Membranes and Membrane Processes) in San Francisco. It is one of the biggest and most important conferences concerning membrane science and application. Mathias Ulbricht gave different presentations about the latest progresses made in the TC II group. Jens Schumacher (left on the picture below) presented a poster (Swift heavy ion perforated and track-etched graphene/polymer composite membranes for ultrafiltration) of the work done by the NU-TEGRAM project partners.
A new PhD student at the Schleberger group
Lukas Madauß studied NanoEngineering with the focus on nanoelectronics/-optoelectronics at the university of Duisburg-Essen from 2011-2016. During his studies as well as in his Bachelor- and Master-Thesis, he worked on the synthesis and applicability of two-dimensional materials, such as graphene, single-layer of molybdenum disulfide and tungsten disulfide.
In 2017, he joined the NU-TEGRAM team as a PHD student in the group of Prof. Dr. Marika Schleberger. In close co-operation with all project partners, he will work on the optimization of fabrication of graphene/polymer composite membranes, irradiation of the membranes with swift heavy ions as well as characterization by AFM, Raman spectroscopy, SEM and TEM.
A new PhD student at Soft Matter, Fluidics and Interfaces Group
Name: Mandakranta Ghosh E-mail: firstname.lastname@example.org Nationality: Indian Date of Birth: 11th August 1985
M.Tech in Solid State Technology, Indian Institute of Technology, Madras, India
MSc. in Physics, University of North Bengal, West Bengal, India
06.2016-present: Employee of NOW-I, PhD student in Soft matter, Fluidics and Interface group, University of Twente, Enschede, The Netherlands
2015-2016: Research experience at Institute of Physics, Polish Academy of Science, Warsaw, Poland
2014-2015: M.Tech project on Spectroscopic Ellipsometry Study of Confined Water in Graphene Based system
Graphene, being one layer thick and extremely strong can be processed in solutions. The spacing between two hydrophobic layers of graphene allows frictionless flow of water which is ten billion times faster than Helium. It is also observed that intercalated water layer influences the migration of CO2 molecules between the stacks. This opens up a new area of filtration and separation techniques. A number of theoretical and experimental studies have shown that graphene sub-nanometer pores can be used as highly selective membranes.
In our project, we are studying the filtration property and transport phenomena of single layer perforated graphene as membrane. We mainly focus on understanding the transport behavior of ions travelling through pores in the graphene.
The first NU-TEGRAM paper has been published. Project partners from the Ruđer Bošković Institute, ENSICAEN and AG Schleberger contributed to the experimental results. The team investigated the response of freestanding graphene to swift heavy ion irrdiation. In a joint effort, samples were irradiated with ions of varying energy. With the help of molecular dynamics (Nordlund, University of Helsinki) the results could be explained in terms of increasing hole size with increasing energy deposition. This is an important result for the project as it would allows us to tune the pore size of our membranes in an easy way.
A new PhD student at the Ruđer Bošković Institute
Kristina Tomić was born in Vinkovci in 1991. Later, her family moved to the coastal city of Pula, where she finished secondary education. Afterwards, Kristina moved to Zagreb where she completed Master studies of physics and chemistry education at the University of Zagreb.
Kristina Tomić is now a member of the NU-TEGRAM group at the Ruđer Bošković Institute. As a PhD student, she will take part in the low energy swift heavy ion irradiation experiments. These include further development of the ion irradiation setup, participation in irradiation campaigns and characterisation of produced nanodefects by atomic force microscopy and Raman Spectroscopy. Nanomembrane fabrication by etching of the irradiated polymer foils is also forseen. To take full advantage of opportunities within the project, hands-on training within other project groups is planned. Her dual-role education as physicist and chemist will surely match well the broad range of research activities she will undertake within the NU-TEGRAM project.
At this year's CENIDE anniversary celebration, Lukas Madauß from AG Schleberger and Jens Schumacher from AK Ulbricht (Chemistry) won one of the coveted poster prizes. With their work on "Graphene / Polymer Composites for Nano- and Ultrafiltration", Lukas and Jens were able to convince the jury and were rewarded with a Best Poster Award. The work has been conducted within the framework of the project NU-TEGRAM, in which highly functional super-membrane composites are developed and investigated. The photo shows Lukas when sorting the membrane samples.
Graphene Week Warsaw 2016
Warsaw hosted this year´s international Graphene Week 2016. For 7 days, everyone focused on the 2D material graphene, due to its extraordinary properties. Besides presentations and talks about graphenes electrical behaviour, one could observe an increasing interest in its filtering properties and appropiate ways to modify these.
The partners of our transnational membrane project (NU-TEGRAM) have on 13/14. April in Budapest met with scientists of other projects that were successful in the FLAG-ERA program, as well as with representatives of the EU. In addition to the scientific exchange, the integration of partner projects stood in the European Flagship Graphene in the foreground. Following the kick-off meeting of our membrane project took place.