News

Details: Created: 12 April 2017

EP2

Dr. Ondrej Cibulka and PhD student Martin Müller visited Prof. Jan Benedikt

Dr. Ondrej Cibulka and PhD student Martin Müller (see photograph with Kerstin Sgonina together with an atmospheric plasma source for nanoparticle generation) came in March from the Czech Academy of Sciences in Prague to visit the group Coupled Plasma-Solid State Systems of Prof. Jan Benedikt. Their stay was organized in Frame of DAAD exchange Program "Critical evaluation of optical gain in different types of Si nanocrystals for future CMOS technology". The fruitful cooperation resulted already in four peer-review articles. The reciprocal visit of Mrs. Sgonina and Prof. Benedikt in Prague is planed for April.

Institute of Physics of the Czech Academy of Sciences

Details: Created: 10 April 2017

Microbiology

Agata Giardina

The research group applied microbiology of Prof. Julia Bandow welcomes M.Sc. Agata Giardina fo the Universitá di Padova from Italy. The intention of the collaboration is to intensify the knowledge about the impact of plasmas on biological systems. This fits perfectly to Agiata Giardina's PhD topic, the effect of new plasma sources on the model enzyme GAP-dehydrogenase. She visits the group for at least four months, from January 1st, 2017 until April 30th, 2017.

Details: Created: 30 March 2017

Prof. Dr. Jan Benedikt moves to Christian-Albrechts University Kiel

At April 1st, 2017 Jan Benedikt was appointed full professor for experimental plasma physics at Christian-Albrechts University Kiel. The research department will continue the collaboration with the group of Prof. Benedikt and will strenghten thereby the ties with CAU.

In 2004 Dr. Jan Benedikt joined RUB as a PostDoc in the research group reactive plasmas of Prof. von Keudell. He build up the experiments on mass spectrometry, µ-plasmas, and plasma medicine. In 2010 he was appointed a junior professorship for Coupled Plasma-Solid State Systems at the faculty for plasma physics and astronomy. During his time at RUB, he supervised six PhD thesis and numereous master and bachelor thesis.

The research department plasmas with complex interactions whishes Jan Benedikt all the best for his future and looks forward to many fruitful collaborations.

Details: Created: 24 March 2017

TP4

Prof. Dr. Felix Spanier

The well-established cooperation in the BMBF project "Astrophysical Processes in the Heliospheric Environment" of PD Dr. Horst Fichtner (Chair of Theoretical Physics IV) with the North-West University, Potchefstroom Campus, in South Africa led to a visit of Prof. Dr. Felix Spanier to talk about latest scientific results. He visited RUB from 09 - 16 January 2017.

Details: Created: 24 March 2017

TP4

Dr. Roelf Du Toit und M.Sc. Petrus Johannes Steyn

PD Dr. Horst Fichtner welcomed another visit from South Africa in the framework of the BMBF project "Astrophysical Processes in the Heliospheric Environment". Dr. Roelf Du Toit and M.Sc. Petrus Johannes Steyn came from the North-West University, Campus Potchefstroom, in South Africa from February 16 - 17, 2017.

Details: Created: 24 March 2017

TP4

Dr. Bidzina Shergelashvili

Austrian visitors had the chair of theoretical physics IV, PD Dr. Horst Fichtner. From the University of Graz Dr. Bidzina Shergelashvili was visiting in the time of March 13 - 24.

Details: Created: 24 March 2017

EP2

Dr. Molina

Dr. Ricardo Molina from the Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) will give the seminar “Plasma polymerization in contact with liquids” on Wednesday, March, 29^th, in Bochum. This lecture explores some routes to synthesize polymers in liquid environment by means of dielectric barrier discharges (DBD). The properties of the treated surfaces, e.g. surface energy, are addressed as well.

Since 2009, Dr. Molina works as Tenured Scientist at IQAC-CSIC in Barcelona, Spain. Being an expert in remote plasma treatments and DBD applications, his work is focused on plasma treatment of polymeric materials, plasma sterilization, plasma in liquids (elimination of contaminants in wastewater and polymerization) and plasma in agriculture (plasma activated water, seed germination, etc).

The seminar will take place on 29.03.17 at 10.00 in the lecture room ID 03/445 in the RUB. Please confirm attendance by sending an e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it.

Details: Created: 24 March 2017

Workshop an der North-West University, Campus Potchefstroom, in Südafrika

Im Rahmen des BMBF-Projkets "Astrophysical Processes in the Heliospheric Environment" findet ein Workshop an der Kooperationshoschule in Südafrika statt. Neben einer Delegation aus Bochum werden von den anderen Projektpartner sich Vertreter in Südafrika zusammentreffen um die Ergebnisse zu diskutieren.

Details: Created: 14 March 2017

DPG Bremen

The DPG Spring Meeting has been held this year in Bremen, Germany, March 13-16, where scientists from the fields of plasma physics, matter and cosmos, short-range physics, environmental physics can exchange ideas. The Research Department Plasmas with Complex Interactions is represented at the DPG by talks and posters from students as well as PIs.

Presentations were given by:

Astrophysikalische MHD-Schockstrukturen am Beispiel von λ Cephei
Lennart Robin Baalmann
An improved analytical model of the local interstellar magnetic field: The extension to compressibility
Jens Kleimann, Christian Röken, and Horst Fichtner
Linear Disturbances in the Local Interstellar Medium: The Plasma-Gas Interaction in the Two-Fluid Approximation
Lukas Westrich
Semi-Analytical Calculation of Interplanetary Magnetic Field Configurations
Sophie Aerdker
Coronal active region modelling based on SDO data
Stephan Barra
A generalized two-component model of solar wind turbulence
Horst Fichtner, Tobias Wiengarten, Sean Oughton, Eugene Engelbrecht, Jens Kleimann, and Klaus Scherer
How hot is the heliosheath?
Klaus Scherer, Hans-Jörg Fahr, Horst Fichtner, Adama Sylla, and John Richardson

Durch Poster vertreten:

Deposition of SiOx coatings by means of inductively coupled plasma
Markus Brochhagen, Vincent Layes, Marc Böke, and Jan Benedikt
Argon Implantation in Composite Magnetron Targets
Sascha Monje and Vincent Layes
Investigation of Microarray Plasmas with an adjacent dielecric
Sebastian Dzikowski, Ronan Michaud, Remi Dussart, and Volker Schulz-von der Gathen
Correlation of spatially resolved in-vacuum XPS characterisation and optical diagnostics for composite magnetron targets in HiPIMS plasma
Vincent Layes, Sascha Monjé, Carles Corbella, Volker Schulz-von der Gathen, Achim von Keudell, and Teresa de los Arcos
Deposition of a-C:H layers using an atmospheric pressure He/Acetylene plasma jet
Theresa Urbanietz, Katja Rügner, Gert Willems, Achim von Keudell, and Jan Benedikt
Broadening and shift of optical emission lines in a high power impulse magnetron sputtering discharge
Julian Held, Ante Hecimovic, and Volker Schulz-von der Gathen
Investigations on the dynamics of non-reactive and reactive high-power impulse magnetron sputtering plasmas
Katharina Grosse, Wolfgang Breilmann, Christian Maszl, Jan Benedikt, and Achim von Keudell
Electron dynamics in magnetized technological plasmas: A kinetic description
Ralf Peter Brinkmann and Dennis Krüger

Details: Created: 10 March 2017

AEPT

19.01.2017 - Prof. Dr. Joost van der Mullen

Vom 06. bis 09. Februar 2017 wird Joost van der Mullen, emeritierter Professor der Technische Universiteit Eindhoven einen Workshop zum Thema "Plasma Characterization and classification using the method of disturbed Bilateral Relations" an der Ruhr-Universität Bochum halten. Prof. van der Mullen ist auch nach seiner Emeritierung weiterhin aktiv in der Forschung tätig und derzeit an der Universiteit Antwerpen an der Fakultät für Chemie beschäftigt. Sein Workshop wird voraussichtlich von 09 bis 17 Uhr in ID 03/653 stattfinden.
Title: Plasma Characterization and classification using the method of disturbed bilateral relations.
Abstract: The aim of this lecture-block is to provide a common basis for engineers, experimentalists, theoreticians and users of plasma sources. This will be done by presenting a plasma classification/characterization tool based on the many aspects of equilibrium departures in plasmas. This leitmotiv is chosen because non-equilibrium is the essential reason behind the success of high-tech plasmas physics. Plasmas can generate large fluxes of photons and radicals but these effluxes will create deviations from the equilibrium.
To find our way in the wilderness of plasma features and sources we will use the method of disturbed Bilateral Relations (dBR), which relates equilibrium disturbing to equilibrium restoring mechanisms. In that way it generates validity-criteria and predicts trends in the deviations from equilibrium. The basic idea of the dBR method is that “equilibrium” has many features, which can be described by specifying the underlying balances of (de)excitation ionization/recombination, absorption/emission etc.. Equilibrium-departure has also many aspects. This can be caused by the efflux of heat, photons and/or (charged) particles.
Several different types of plasmas will be dealt with in various case studies. The tight relation between the (simplified) theory and spectroscopy will be highlighted. Apart from passive spectroscopy (Optical Emission Spectroscopy) we will also give examples of active (laser) spectroscopy like Thomson scattering.
The use of complicated formulas is avoided; the number of equations will be limited.