Université d'Orléans

Johannes Berndt

Johannes Berndt

 

Chercheur CDI - HDR (habilitation according to German academic system)

 

GREMI, Groupe de Recherches sur l'Energétique des Milieux Ionisés

UMR7344, CNRS/Université d'Orléans

14 rue d'Issoudun, BP 6744

45067 Orléans Cedex 2, France

 

Courriel : johannes.berndt[remplacer par @]univ-orleans.fr

Téléphone : +33 238 49 46 07

 

 

Thèmes

Axe I   Procédés plasma et laser - croissance de couches minces et nanomatériaux

Thème I.1  Stockage, conversion d’énergie et nouveaux matériaux

Thème Transversal : Diagnostics des plasmas et des interfaces - Fonctionnalisation de surface -Modélisation

 

Centres d'intérêt ou Activité Scientifique

 

·        Investigation and application of microwave  plasmas +rf-plasmas

-         Set up and investigation of radical sources (N,H-atom sources)    

 

·        Plasma surface interactions and thin film deposition

-         study of synergistic effects during  the growth and etching of carbonaceous thin films

-         functionalization of surfaces

-         superhydrophilic and superhydrophobic surfaces

 

·       Reactive plasmas and plasma chemistry

-         formation of nanoparticles in low temperature plasmas

-         formation of negative ions in pulsed discharges

-         in-situ diagnostic of nano-submicron particles by means of laser light scattering and FTIR-spectroscopy

-         plasma based synthesis of nanocomposite materials

 

·       Magnetron sputtering and fuel cells

-         production of bi- and trimetallic electrodes for fuel cell applications

 

 

Compétences

 

  • Plasma diagnostics

-          emission and absorption spectroscopy (incl. UV – and FTIR- spectroscopy), LIF

-          microwave interferometry

-          Langmuir probe measurements

-          mass spectroscopy (Plasma-Ion-Mass-Spectroscopy, Threshold-Ionisation-Mass Spectroscopy, Modulated Beam Mass-Spectroscopy)

 

·       Particle and thin film diagnostics

-          Near Edge X-ray Absorption Fine Structure Spectroscopy (NEXAFS)

-          Nuclear Reaction Analysis, Rutherford Backscattering

-          RAMAN- Spectroscopy

-          Ellipsometry

-          IR- und UV- Absorption spectroscopy

-          Electron microscopy (SEM,TEM)

 

·       Discharge types

-          Inductively coupled discharges, Capacitively coupled discharges,  Surface wave produced discharges (Microwave and HF-plasmas), Magnetron discharges

 

  • Modelling

-          Modelling of microwave discharges: collisional radiative models  coupled with self consistent solutions of the Boltzmann equation, numerical solution of Maxwell equations, plasmachemical simulations

 

 

Responsabilités

Project manager of the European SmartCat project

FP7 Fuel Cells and Hydrogen Joint Technology Initiative grant agreement FP7-2012-JTI-FCH-325327

 

Member of the Editorial Board of Scientific reports (Nature publishing group)

 

 

Miscellaneous

Member of EDFS, EPS, Plasma Germany

 

 

Degrees

 

1992:   Diploma in Physics at the Ruhr-University in Bochum. Thesis title: “On the influence of metastable atoms on a surface wave produced plasma”

 

1996:   PhD in Physics obtained at the Ruhr-University Bochum. Thesis title: “Surface wave propagation in inhomogeneuos plasmas”

 

2008:   Habilitation (according to German research system), Faculty for Physics and Astronomy, Ruhr University Bochum, Germany. Title: “Reactive complex plasmas”.

 

 

Professional Career

 

April 92 – February 96            Research associate, Experimental Physics II, Ruhr University Bochum, Germany

February/96 – April/98            Employee of Linde AG Munich (Werksgruppe Technische Gase)

May/98 – February 2008         Group-leader (senior scientist) at the Institute of experimental physics II, Ruhr-University Bochum

Since March 2008                   researcher at GREMI, Orleans, France

 

1992- 96 and 1998- today   teaching (courses, exercises, etc; for undergraduate and graduate students)

2001-2003 and 2005-2008: Lecturer at the Summer School "Low Temperature Plasma Physics" at Bad Honnef:  Microwave discharges, Surface wave discharges”

2004: Lecturer at the European Marie Curie Training Course "Low Temperature Plasma Physics: Basics and Applications“

 

Supervisor of undergraduate and graduate students, and PhD candidates

Principal investigator of several 3rd party funded projects 

 

Mes 5 publications principales

 

Numerical calculations on surface wave propagation in longitudinally non-uniform plasmas

Yu M Aliev, J. Berndt, H. Schluter and A. Shivarova, Plasma Phys. Control. Fusion 36 937-944 (1994)

 

Quantitative analysis of the atomic nitrogen concentration in a remote plasma by means of mass spectrometry

D Douai, J Berndt and J Winter, Plasma Sources Sci Tech. 11, 60-68, (2002)

 

The controlled formation of dust particles in pulsed plasmas

J. Berndt, E. Kovacevic, and L. Boufendi, Journal of Applied Physics, 106, 063309 (2009)

 

Some aspects of reactive complex plasmas  (invited review paper)

J. Berndt, E. Kovacevic, I. Stefanovic, J. Winter and L. Boufendi, Contributions in Plasma Physics 49, 107-133 (2009)

 

Deposition and tuning of nanostructured hydrocarbon deposits: from superhydrophobic to superhydrophilic and back

Berndt, J., Acid, H., Kovacevic, E., Boufendi, L., J. Appl. Phys. 113, 063302 (2013)

 

 

Publications au GREMI depuis 2006

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