This image shows Matthias Walker

Matthias Walker

Dr.-Ing.

Head of Administration / Head of Plasma Technology
Institute of Interfacial Process Engineering and Plasma Technology

Contact

+49 711 685 62300

Pfaffenwaldring 31
70569 Stuttgart
Germany

Selection of publications

  1. W.Petasch, E. Räuchle, M. Walker, Polymer auf Aluminium: Partnerschaft auf kurze Zeit?, Metalloberfläche, 46 (1992), 10.
  2. W. Petasch, K. Baumgärtner, E. Räuchle, M. Walker, Influence of plasma surface treatment on the adhesion of thin films on metals, Surf. Coat. Technol., 59 (1993), 301.
  3. M. Walker, K. M. Baumgärtner, E. Räuchle, Multilayer barrier films on polyethylene polymerized from CF3H / C2H4 plasmas, Acta Polym., 47 (1996), 466.
  4. M. Walker, K. M. Baumgärtner, M. Ruckh, M. Kaiser, H. W. Schock, E. Räuchle, XPS and IR Analysis of Thin Barrier Films Polymerized from C2H4 / CF3H ECR-Plasmas, J. Appl. Polym. Sci, 64 (1997), 717.
  5. M. Walker, K. M. Baumgärtner, M. Kaiser, S. Lindenmaier, E. Räuchle, Barrier properties of thin films polymerized from CF3H / C2H4 electron cyclotron resonance plasmas, Surf. Coat. Technol., 97 (1997), 291.
  6. M. Walker, K. M. Baumgärtner, M. Kaiser, J. Kerres, A. Ullrich, E. Räuchle, Proton-Conducting Polymers with Reduced Methanol Permeation, J. Appl. Polym. Sci., 74 (1999), 67.
  7. M. Kaiser, K. M. Baumgärtner, A. Schulz, M. Walker, E. Räuchle, Linearly extended plasma source for large-scale applications, Surf. Coat. Technol. 116-119 (1999), 552.
  8. M. Walker, K. M. Baumgärtner, A. Schulz, E. Räuchle, Silicon nitride films from the Plasmodul- a new microwave plasma device, 14th Int. Symp. on Plasma Chemistry, Symp. Proc., Vol. III (1999), 1427.
  9. M. Walker, K. M. Baumgärtner, J. Feichtinger, M. Kaiser, E. Räuchle, J. Kerres, Barrier properties of plasma polymerized thin films, Surf. Coat. Technol., 116-119 (1999), 996.
  10. M. Walker, K. M. Baumgärtner, J. Feichtinger, M. Kaiser, A. Schulz, E. Räuchle, Silicon oxide films from the Plasmodul, Vaccum, 57 (2000), 387.
  11. K. M. Baumgärtner, J. Schneider, A. Schulz, J. Feichtinger, M. Walker, Short-time plasma pre-treatment of polyteraflurethylene for improved adhesion, Surf. Coat. Technol. 142-144 (2001), 501.
  12. J. Feichtinger, R. Galm, M. Walker, K. M. Baumgärtner, A. Schulz, E. Räuchle, U. Schumacher, Plasma polymerized barrier films on membranes for direct methanol fuel cells, Surf. Coat. Technol., 142-144 (2001), 181.
  13. A. Schulz, K. M. Baumgärtner, J. Feichtinger, M. Walker, U. Schumacher, A. Eicke, K. Herz, F. Kessler, Surface passivation of silicon with the Plasmodul, Surf. Coat. Technol., 142-144 (2001), 771.
  14. J. Feichtinger, J. Kerres, A. Schulz, M. Walker, U. Schumacher, Plasma modifications of membranes for PEM fuel cells, J. New. Mat. Electrochem. Systems, 5 (2002), 155.
  15. M Walker, Plasma polymerized barrier films, Recent Res. Devel. Appl. Pol. Sci., 1 (2002), 281.
  16. J. Feichtinger, A. Schulz, M. Walker, U. Schumacher, Sterilisation with low-pressure microwave plasmas, Surf. Coat. Technol., 174-175 (2003), 564.
  17. A. Schulz, M. Walker, J. Feichtinger, E. Räuchle and U. Schumacher, Investigations and applications of plasmas generated by the Duo-Plasmaline, in Microwave Discharges: Fundamentals and Applications, ISBN 3-00-011612-5.
  18. J. Krüger, T. Kubach, J. Feichtinger, K. Hirsch, P. Lindner, S. Quell, A. Schulz, R. Stirn, M. Walker, U. Schumacher, Spectroscopic investigations of pulsed microwave generated Ar, N2 and silane plasmas, Surf. Coat. Technol., 174-175 (2003), 933.
  19. A. Schulz, J. Feichtinger, J. Krüger, M. Walker, U. Schumacher, Spectroscopic investigations on silicon nitride deposition with the Plasmodul, Surf. Coat. Technol., 174-175 (2003), 947.
  20. M. Walker, F. Meermann, J. Schneider, K. Bazzoun, J. Feichtinger, A. Schulz, J. Krüger and U. Schumacher, Investigations of plasma polymerized films on polymeric materials, Surf. Coat. Technol., 200 (2005), 947.
  21. J. Krüger, U. Schweitzer, J. Schneider, A. Schulz, M. Walker, U. Schumacher, Investigations of silicon nitride layers deposited in pulsed microwave generated ammonia-silane plasmas, Surf. Coat. Technol., 200 (2005), 639.
  22. A. Schulz, D. Herrmann, F. Kessler, J. Schneider, M. Walker, U. Schumacher, Detection and identification of pinholes in plasma-polymerised thin film barrier coatings on metal foils, Surf. Coat. Technol., 200 (2005), 213.
  23. J. Schneider, K. M. Baumgärtner, J. Feichtinger, J. Krüger, P. Muranyi, A. Schulz, M. Walker, J. Wunderlich, U. Schumacher, Investigation of practicability of low-pressure microwave plasmas in the sterilisation of food packaging materials at industrial level, Surf. Coat. Technol., 200 (2005), 962.
  24. J. Schneider, U. Schumacher, A. Schulz, M. Walker, M. Leins, U. Stroth, Development of Plasma Polymerised SiOx Barriers on Polymer Films for Food Packaging Applications, Plasma Process. Polym., 4:155–159, 2007.
  25. M Leins, M. Walker, K. M. Baumgärtner, A. Schulz, U. Schumacher, U. Stroth, Studies on a microwave-heated atmospheric Plasma Torch, Plasma Process. Polym., 4:493-497, 2007.
  26. A. Schulz, L. Steiner, M. Walker, U. Schweitzer, J. Krüger, U. Stroth, Infrared and morphological investigations of plasma-polymerised thin silicon nitride films deposited with the Plasmodul, Plasma Process. Polym., 4:826–830, 2007
  27. U. Schweitzer, K. M. Baumgärtner, U. Stroth, M. Walker, U. Schumacher, A. Schulz, Study of a new plasma source for free-standing plasmas, Plasma Process. Polym., 4:978-981, 2007.
  28. U. Schweitzer, A. Schulz, M. Walker, K.-M. Baumgärtner, H. Muegge, U. Schumacher and U. Stroth, The Microwave Concentrator Stack: A Source for Free-Standing, Linearly Extended Plasmas, Contr. Plasma Phys., 47:505–509, 2007.
  29. M. Leins, L. Alberts M. Kaiser, M. Walker, A. Schulz, U. Schumacher, U. Stroth, Development and characterisation of a microwave-heated atmospheric plasma torch, Plasma Process. Polym. 2009, 6, S227-S232.
  30. M. Leins, A. Schulz, M. Walker, U. Schumacher, U. Stroth, Development and Characterization of an Atmospheric-Pressure Microwave Plasma Torch, IEEE Transaction on Plasma Science, 982 - 983, Vol. 36, No. 4, August 2008.
  31. J. Schneider, M.-I. Akbar, J. Dutroncy, D. Kiesler, M. Leins, A. Schulz, M. Walker, U. Schumacher, and U. Stroth, Silicon oxide barrier coatings deposited on polymer materials for applications in food packaging industry, Plasma Process. Polym. 2009, 6, S700-S704.
  32. E. Häberle, J. Kopecki, A. Schulz, M. Walker, and U. Stroth, Deposition of barrier layers for thin film solar cells sustained by bipolar substrate biasing, Plasma Process. Polym. 2009, 6, S282-S286.
  33. U. Schumacher, R. Stirn, A. B. Ene, K. Hirsch, M. Leins, P. Lindner, A. Schulz, and M. Walker, Spectroscopic Analysis of Microwave-Generated Plasmas, IEEE Transaction on Plasma Science, 1836 - 1842, Vol. 37, No. 6, 2009.
  34. G. Buyle, J. Schneider, M. Walker, Y. Akishev, A. Napartovich, and M. Perucca, Plasma systems for surface treatment, chapter 2, 33 – 61, Wiley-VCH, Weinheim, 2010.
  35. J. Schneider and M. Walker, Oxygen barriers for polymer food packaging, chapter 8, 225 – 261, Wiley-VCH, Weinheim, 2010.
  36. J. Kopecki, D. Kiesler, M. Leins, A. Schulz, M. Walker, M. Kaiser, H. Muegge, U. Stroth, Investigations of a high volume atmospheric plasma torch at 915 MHz, Surface and Coatings Technology, 225, S342-S346, 2011.
  37. S. Plog, J. Schneider, M. Walker, A. Schulz, U. Stroth, Investigations of plasma polymerized SiOx barrier films for polymer food packaging, Surface and Coatings Technology, 225, S165-S170, 2011.
  38. A. Schulz, M. Leins, J. Kopecki, M. Walker, U. Stroth, Mikrowellen-Plasmabrenner bei Atmosphärendruck, Vakuum in Forschung und Praxis, 23, 6-11, 2011.
  39. S. Merli, A. Schulz, M. Walker, U. Stroth, T. Hirth, Hochrateabscheidung mit einem Mikrowellenplasma, Vakuum in Forschung und Praxis, 25(2), 33-44, 2013.
  40. A. Schulz, P. Büchele, E. Ramisch, O. Janzen, F. Jimenez, C. Kamm, J. Kopecki, M. Leins, S. Merli, H. Petto, F.R. Mendez, J. Schneider, U. Schumacher, M. Walker, U. Stroth, Scalable Microwave Plasma Sources from low to atmospheric pressure, Contrib. Plasma Phys., 52(7), 607-614, 2012.
  41. M. Leins, M. Walker, A. Schulz, U. Schumacher, U. Stroth, Spectroscopic investigation of a microwave-generated atmospheric pressure plasma torch, Contrib. Plasma Phys., 52, 615-628, 2012.
  42. Leins, M., Gaiser, S., Schulz, A., Walker, M., Schumacher, U., Hirth, T. How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters. J. Vis. Exp., e52816, doi: 10.3791/52816 (2015).
  43. W. Bongers, H. Bouwmeester, B. Wolf, F. Peeters, S. Welzel, D. van den Bekerom, N. den Harder, A. Goede, M. Graswinkel, P. W. Groen, J. Kopecki, M. Leins, G. van Rooij, A. Schulz, M. Walker, R. van de Sanden, Plasma-driven dissociation of CO2 for fuel synthesis, doi: 10.1002/ppap. 201600126.
  44. S. Merli, A. Schulz, M. Walker, G. Tovar, Hochrateabscheidung von Schutzbeschichtungen mit einem Mikrowellenplasma, Galvanotechnik, 7, 1426-1433, 2018

Patents

Walker, E. Räuchle, H. Gleich, O. Hoyer, G. Vollweiler, Process for plasma coating a plastic object with multifunctional layers, Europäisches Patent EP 0739655 B1, 31.03.1999

Kaiser, M. Walker, E. Räuchle, M. Ruckh et al., Mehrfunktions-Verkapselungsschichtstruktur für photovoltaische Halbleiterbauelemente und Verfahren zu ihrer Herstellung, Deutsches Patent DE 197 32 217 A1, 11.02.1999

Schulz, M. Walker, U. Schweitzer, K. M. Baumgärtner, H. Mügge, Anordnung zur Konzentration von Mikrowellenenergie, DE 10 2006 034 084.1, 24.01.2008

Walker, A. Schulz, S. Merli, R. Oser, T. Kuhlmann, Mehrschichtaufbau mit gutem UV- und Kratzschutz, EP 3 114 174 B1, 29.11.2017

Academic career

1983 – 1989
Physics degree at University of Stuttgart

1989 – 1990
Diploma thesis at the Institute for Plasma Research with the topic „Untersuchung der plasmaphysikalischen Grundlagen einer induktiv gekoppelten Plasmaentladung“

11.09.1990
Diploma examination to Dipl.-Phys.

1991 – 1996
Scientific employee at the Institute for Plasma Research

16.12.1996
Doctorate (Dr.-Ing.) with the thesis „Permeation von Toluol durch plasmapolymerisierte Barriereschichten auf Polyethylen hoher Dichte“

PhD supervisor Prof. Dr. Uwe Schumacher, co-rapporteur Prof. Dr. Gerhard Busse

since 01.01.2005
Head of the Plasma Technology Department of the Institute for Plasma Research

since 01.01.2013
Head of the Department of Plasma Technology of the IGVP with currently 2 scientists, 3 PhD students, 1 technician and 3 Bachelor and Master students

Professional career

1991 – 1996
Scientific employee at the Institute for Plasma Research

since July 1999
Head of Administration of the Institute for Plasma Research

13.03.2000
Appointment to the Academic Council

17.06.2003
Appointment as Academic Senior Councillor

since 01.01.2013
Head of Administration of the Institute of Interfacial Engineering and Plasma Technology (IGVP) with more than 70 employees

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