Thin Film Processing

Thin films are used for electronic applications, for wear and corrosion protection as well as for optical and structural applications. The functionalization of these layers by means of laser radiation enable the realization of ressource- and energy efficient production processes with minimal thermal load for the workpiece. The local selectivity as well as the inline-capabilty open new possibilities for the layout of new products and production processes.

Our service portfolio includes feasibility studies for customer-specific problems, integration of laser functionalization into the production process as well as consulting for the concept of processes and production lines.

Funtional Layers for Electronic Applications

• Selective gold-contacting
• Multi-material layers for component-connected sensors and actors
• Electrodes for Li-Ion batteries

Wear-/Corrosion Protection and Tribology

• Nano-ceramic layers
• Polymer layers
• Bonded coatings

Optical and structural Applications

• Anti-reflection coatings
• Carbon-fiber production

Opitz,M., Go,D., Lott,P., Müller,S., Stollenwerk, J., Kuehne,A., Roling, B.,
On the interplay of morphology and electronic conductivity of rotationally spun carbon fiber mats.
Journal of Applied Physics 122, 105104 (7 S.) (2017)

Buling, A., Sändker, H., Stollenwerk, J., Krupp, U., Hamann-Steinmeier, A.,
Laser Surface Pretreatment of 100Cr6 Bearing Steel - Hardening Effects and White Etching Zones
Applied Surface Science 378
564-571 (2016)

Go, D., Lott, P., Stollenwerk, J., Thomas, H., Moeller, M., Kuehne, A. J. C.,
Laser Carbonization of PAN-Nanofiber Mats with Enhanced Surface Area and Porosity.
ACS Applied Materials & Interfaces 8
28412-28417 (2016)

Vedder, C., Hawelka, D., Wolter, M., Leiva, D., Stollenwerk, J., Wissenbach, K.:
Laser-based drying of battery electrode layers
35th International Congress on Applications of Lasers & Electro-Optics , San Diago, Ca. , USA , ICALEO , Oct 16-20, 2016. pp. 501 (2016)

Vedder, C., Wollgarten, S., Gradmann, R., Stollenwerk, J., Wissenbach, K., Eberstein, M.:
Laser-based functionalization of electronic multi-material-layers for embedded sensors
35th International Congress on Applications of Lasers & Electro-Optics , San Diago, Ca. , USA , ICALEO , Oct 16-20, 2016. pp. 2104 (2016)

Meixner, M., Stollenwerk, J., Weigt, W., Zschuppe, M.:
Laser statt Trockenöfen
Farbe und Lack Nr. 3, 88-92 (2015)

Sändker, H., Stollenwerk, J., Hofmann, J., Loosen, P.:
Laser beam propagation and energy deposition in particulate PEEK layers. Proceedings of World of Photonics
WLT/ LiM Lasers in Manufacturing, München, 22.06.-25.06.2015, 9 S.  (2015)

Lott, P., Stollenwerk, J., Wissenbach, K. ,
Laser-based production of carbon fibers.
Proceedings 33rd ICALEO International Congress on Applications of Lasers & Electro–Optics, October 19-23, 2014, San Diego, CA, USA. Paper M 602, 1-6 (2014)

Chen, X., Yagi, M., Akiyama, Y., Machida, O., Ohta, E., Meixner, M.: Stollenwerk, J., Boettger, U., Schneller, T.,
Fabrication of multilayer Pb(Zr0.53Ti0.47)O3 film crystallized by laser annealing.
Japanese Journal of Applied Physics 52, 1-4 (2013)

Hartmann, C., Hambach, N., Jüngst, M., Keller, S., Holtkamp, J., Gillner, A.:
High density perforation of thin Al-foils with ultra short pulse lasers
Proc. of LAMP2013 - the 6th Int. Congr. on Laser Advanced Materials Processing (4 S.) (2013)

Hawelka, D., Stollenwerk, J., Pirch, N., Wissenbach, K., Loosen, P.,
Improving surface properties by laser-based drying, gelation, and densification of printed sol-gel coatings.
Journal of Coatings Technology and Research 10, 1-8 (2013)

Stollenwerk, J.:
Energie- und ressourceneffiziente Funktionalisierung temperaturempfindlicher Substrate
Laser Mag. 2013, 8-9 (2013)

Hawelka, D., Stollenwerk, J., Pirch, N., Wissenbach, K.:
Improving Surface Properties by Laser-based Drying, Gelation and Densification of Printed Sol-Gel Coatings
Proc. 16th International Coating Science and Technology Symposium,
September 9-12, 2012, Midtown Atlanta, GA

Meixner, M., Stollenwerk, J., Wissenbach, K.,
Production of silver conductive paths by laser processing.
ICALEO: 31. Int. Congress on Applications of Lasers and Electro- Optics, September 23-27, 2012. International Congress on Applications of Lasers & Electro–Optics,  Anaheim, CA, USA, 1-5 (2012)

Vedder, C., Stollenwerk, J., Wissenbach, K.,
Process monitoring and control for laser-based thin film treatment.
ICALEO: 31. Int. Congress on Applications of Lasers and Electro- Optics, September 23-27, 2012. International Congress on Applications of Lasers & Electro–Optics,  Anaheim, CA, USA, 1-7 (2012)

Hawelka, D., Stollenwerk, J., Pirch, N., Büsing, L., Wissenbach, K.,
Laser based inline production of wear protection coating on temperature sensitive substrates.
Physics Procedia  12, 490-498 (2011)

Vedder, C., Stollenwerk, J., Pirch, N., Wissenbach, K.:
Laser-based manufacturing of metallic conducting paths.
ICALEO 30. Int. Congr. on Applications of Lasers and Electro-Optics, October 23-27, 2011. M804, 5 S., 2011

Vedder, C., Stollenwerk, J., Wissenbach, K., Pirch, N.:
Laser-based production of metallic conducting paths.
Phys. Proced. 12, 252-260, 2011

Ganser, D., Gottmann, J., Mackens, U., Weichmann, U.
Pulsed laser deposition of fluoride glass thin films
Appl. Surface Sci. 257, 954-959, 2010

Gasser, A., Meiners, W., Weisheit, A., Willenborg, E., Stollenwerk, J., Wissenbach, K.,
Maßgeschneiderte Oberflächen und Bauteile. Teil 1.
Laser Technik Journal 7, Nr 4, 47-53 (2010)

Gasser, A., Meiners, W., Weisheit, A., Willenborg, E., Stollenwerk, J., Wissenbach, K.,
Maßgeschneiderte Oberflächen und Bauteile. Teil 2.
Laser Technik Journal 7, Nr 6, 22-26 (2010)

Hawelka, D., Stollenwerk, J., Pirch, N., Wissenbach, K.
Laser based production of thin wear protection films
ICALEO 2010. 29th International Congress on Applications of Lasers & Electro Optics, Anaheim/Ca., September 26-30, 2010. Paper 1709 (6 S.), 2010

D. Trusheim, M. Schulz-Ruhtenberg, J. L. Hernandez, A. Uruena, S. Krantz, C. Morilla, T. Sarnet, A. Olowinsky
Damage-less laser ablation of thin films for silicon solar cells
Proc. of the 5th Int. WLT-Conf. on Lasers in Manufacturing 2009, Munich, June 15-18, 2009. Ed. by A. Ostendorf [u.a.]
Stuttgart: AT Fachverl. 2009, 5 S.

C. Vedder, J. Stollenwerk, N. Pirch, K. Wissenbach
Production technology for transparent and conducting nano layers
Proc. of the 27th Int. Conf. on Applications of Lasers and Electro-Optics 2008, ICALEO, Temecula/CA. October 20th-23rd, Paper N303, 5 S., 2008