Guest Experimental Physics V- Prof. Czarnetzki



Am Freitag, den 17. Juli 2015, wird um 10:15 Uhr Herr Dr. Ralf Heidemann von Thales Deutschland in NABF 05/694 einen Vortrag über „The HEMP Thruster Technology – The next generation ion propulsion engines for satellites and interplanetary missions“ halten. Herr Dr. Heidemann kommt aus der Abteilung "Electric Propulsion R&D - Electron Devices" der Thales Group aus Ulm und ist zu Gast bei Prof. Dr. Uwe Czarnetzki am Lehrstuhl für Plasma- und Atomphysik Experimentalphysik V).
Interessierte sind herzlich willkommen!



13.07.2015 - GAST: DR. QING XIONG

Dr. Qing Xiong, researcher and Assistant Professor from College of Electrical Engineering, Chongqing University, China, gives a talk about "Atmospheric Pressure Micro-plasma Jets and Glow Discharge with Water Electrode". It will be on July 15th, 2015, at 10:15 am at NABF05/694. Anybody interested is welcome to join.
Dr. Qing Xiong will be visiting Prof. Dr. Uwe Czarnetzki at Experimentalphysics V. His research interests mostly focus on advanced spectroscopic diagnostic of cold atmospheric pressure plasmas and plasma interacting with liquids.

Abstract: Non-equilibrium atmospheric pressure micro-plasma jets have recently obtained increasing attention for their unique features such as chamber-less operation and enhanced chemistry without elevated gas temperature. These attractive features make them prospective in several emerging novel applications, such as bio-medicine, material synthesis and surface modification. Characterizations and control of these micro-discharges are important, especially their physics and chemistry, to get insights into mechanisms of plasma treatments. On the other side, plasma interacts with liquid are common in plasma in liquid or in contact with liquid, but interaction processes are very complicated. Until now the fundamentals of interactions between plasma and liquid still remain open with a lot of indistinct issues. Important questions about how the plasma affects the liquid chemistry, and meanwhile how the liquid influences the chemistry of plasma, need to be answered.
These are the main background of my talk, and I will report the characterizations of atmospheric pressure micro-plasma jets, include their physics and chemical features based on plasma diagnostic (OES, LIF, etc). Meanwhile, the presentation will report my recent result of OH radicals production in a glow discharge in contact with water, based on broadband UV absorption spectroscopy measurements. Production mechanism of OH radicals in the discharge above water will be discussed. 

College of Electrical Engineering, Chongqing University



Marc van der Schans vom Department of Applied Physics, Elementary Processes in Gas discharges (EPG) der TU Eindhoven (Niederlande) wird am Donnerstag 07.05.2015, 16:15 Uhr im Seminarraum NABF 05/694 einen Vortrag halten über "Manipulation and Application of Cold Plasmas in Open Air". Interessierte sind herzlich willkommen!

Marc van der Schans


24.03.2015 - GAST: PROF. DR. YI-KANG PU

Prof. Dr. Yi-Kang Pu vom Department of Engineering Physics der Tsinghua University (China) wird vom 4.-9. April 2015 zu Gast bei Prof. Dr. Uwe Czarnetzki (EP5) sein.

Yi-Kang Pu



Prof. Thierry Belmonte and his people have visited from March 9th-12th, 2015 the group of Prof. Czarnetzki. Prof. Belmonte (Institut Jean Lamour, Nancy, France) is investigating pulsed discharges in liquids (liquid nitrogen, water, alcohols) for generation of variety of nanoparticles. Because the jitter of the discharge ignition time and the pulse-to-pulse differences among the formed microdischarges are large, it is very difficult to obtain reliable time-resolved information about discharge performance. An ideal diagnostics for such discharges is a use of streak camera. This camera has been provided to plasma researchers in Bochum by Germen Science Foundation (DFG) in frame of Research Unit "Physics of Microplasmas" (FOR 1123) and has been now successfully applied to the discharge of Prof. Belmonte with the assistance of AvH stipend Dr. Emile Carbone and PhD student Patrick Böhm. These activities are suported by a Leverhulme Trust lnternational Network Collaboration "Materials processing by atmospheric pressure plasmas for energy applications", initiated by Dr. Davide Mariotti (University of Ulster, Jordanstown, Northern Ireland) and includes also Jun.-Prof. Jan Benedikt (Ruhr-University Bochum) and Dr. Vladimir Švrček (National Inst. of Advanced Industrial Sci. and Techn. (AIST), Tsukuba, Japan). 

Thierry Belmonte