TY - CONF A1 - Bonse, Jörn A1 - Koter, Robert A1 - Hartelt, Manfred A1 - Spaltmann, Dirk A1 - Kirner, Sabrina A1 - Pentzien, Simone A1 - Höhm, S. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Tribological properties of femtosecond laserinduced periodic surface structures on metals N2 - Laser-induced periodic surface structures (LIPSS, ripples) were generated on steel and titanium surfaces upon irradiation with multiple linear polarized femtosecond laser pulses (pulse duration 30 fs, central wavelength 790 nm). The experimental conditions (laser fluence, spatial spot overlap) were optimized in a sample-scanning geometry for the processing of large surface areas covered homogeneously by the nanostructures. The irradiated surface regions were subjected to optical microscopy (OM), white light interference microscopy (WLIM) and scanning electron microscopy (SEM) revealing sub-wavelength spatial periods. The nanostructured surfaces were tribologically tested under reciprocal sliding conditions against a sphere of hardened 100Cr6 steel at 1 Hz using paraffin oil and engine oil as lubricants. After 1000 sliding cycles at a load of 1.0 N, the corresponding wear tracks were characterized by OM and SEM. For specific conditions the laser-generated nanostructures endured the tribological treatment. Simultaneously, a significant reduction of the friction coefficient was observed in the laser-irradiated (LIPSS-covered) areas when compared to the non-irradiated surface, indicating the potential benefit of laser surface structuring for tribological applications. T2 - SPIE Photonics West Conference, Symposium "Laser Applications in Microelectronic and Optoelectronic Manufacturing" (LAMOM) XXI CY - San Francisco, CA, USA DA - 13.02.2016 KW - Femtosecond laser ablation KW - Laser-induced periodic surface structures (LIPSS) KW - Tribology KW - Friction KW - Wear PY - 2016 AN - OPUS4-36041 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Kirner, Sabrina A1 - Slachciak, Nadine A1 - Elert, Anna Maria A1 - Griepentrog, Michael A1 - Hertwig, Andreas A1 - Sahre, Mario A1 - Weise, Matthias A1 - Sturm, Heinz A1 - Pentzien, Simone A1 - Koter, Robert A1 - Spaltmann, Dirk A1 - Krüger, Jörg T1 - Tribological performance of titanium samples oxidized by fs-laser radiation, thermal heating, or electrochemical anodization N2 - Commercial grade-1 titanium samples (Ti, 99.5% purity) were treated using three alternative methods, i.e., fs-laser processing in air, thermal heat treatment in an oven, or anodization in an electrochemical bath, all resulting in the formation of differently conditioned superficial oxide layers. The laser processing was carried out by a Ti:sapphire laser (pulse duration 30 fs, central wavelength 790 nm, pulse repetition rate 1 kHz) in a regime of generating laser-induced periodic surface structures (LIPSS). The experimental conditions (laser fluence, spatial spot overlap) were optimized in a sample-scanning geometry for the processing of several square-millimetres large surface areas covered homogeneously by these nanostructures. The thermal processing in the oven was done at two different temperatures, while the electrochemical anodization was performed at room temperature, aiming to generate different polymorphs of titanium oxide at similar oxide layer thickness. The irradiated surface regions were characterized by optical and scanning electron microscopy, and micro Raman spectroscopy. The tribological performance of the differently treated titanium surfaces was characterized in the regime of mixed friction by reciprocating sliding tests against a sphere of hardened steel in un-additivated paraffin oil and fully formulated engine oil as lubricants. The specific tribological performance of the differently treated surfaces is discussed on the basis of possible physical and chemical mechanisms. T2 - International Conference on Laser Ablation, COLA 2017 CY - Marseille, France DA - 03.09.2017 KW - Femtosecond laser KW - Oxidation KW - Laser-induced periodic surface strcutures, LIPSS KW - Friction KW - Wear PY - 2017 AN - OPUS4-42032 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Höhm, S. A1 - Hartelt, Manfred A1 - Spaltmann, Dirk A1 - Koter, Robert A1 - Pentzien, Simone A1 - Marschner, St. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Tribological performance of femtosecond laser-induced periodic surface structures on titanium T2 - 16th International Symposium on Laser Precision Microfabrication LPM 2015 T2 - 16th International Symposium on Laser Precision Microfabrication LPM 2015 CY - Kitakyushu, Fukuka, Japan DA - 2015-05-26 PY - 2015 AN - OPUS4-32598 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Koter, Robert A1 - Hartelt, Manfred A1 - Spaltmann, Dirk A1 - Pentzien, Simone A1 - Höhm, S. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Tribological performance of femtosecond laser-induced periodic surface structures on metals T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials:fundamentals and applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials:fundamentals and applications" CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30918 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Shymanovich, U. A1 - Barty, A. A1 - Boutet, S. A1 - Bogan, M. A1 - Marchesini, S. A1 - Stojanovic, N. A1 - Sobierajski, R. A1 - Lu, W. A1 - El Kharrazi, M. A1 - Vattilana, M. A1 - Quirin, F. A1 - Brazda, T. A1 - Zastrau, U. A1 - Hau-Riege, S. A1 - Tobey, R. A1 - Ehrke, H. A1 - Cavalleri, A. A1 - Redlin, H. A1 - Düsterer, S. A1 - Frank, M. A1 - Bajt, S. A1 - Schulz, J. A1 - Seibert, M. A1 - Hajdu, J. A1 - Treusch, R. A1 - Chapman, H. A1 - Sokolowski-Tinten, K. T1 - Transient respnse of laser-irradiated solids studied with femtosecond short-wavelength free-electron-lasers T2 - Laser Damage Symposium XLI: Annual Symposium on Optical Materials for High Power Lasers T2 - Laser Damage Symposium XLI: Annual Symposium on Optical Materials for High Power Lasers CY - Boulder, CO, USA DA - 2009-09-21 PY - 2009 AN - OPUS4-19629 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Maerten, L. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Transient changes of the optical properties of solids during femtosecond laser pulse irradiation and its implications for the formation of lase-induced periodic surface structures T2 - European Materials Research Society (EMRS) Spring Meeting, Symposium R "Laser processing an diagnostics for micro and nano applications" T2 - European Materials Research Society (EMRS) Spring Meeting, Symposium R "Laser processing an diagnostics for micro and nano applications" CY - Strasbourg, France DA - 2010-06-07 PY - 2010 AN - OPUS4-20993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Rudenko, A. A1 - Déziel, J.-L. A1 - Florian, Camilo A1 - Krüger, Jörg A1 - Colombier, J.-P. T1 - The role of scattering in the formation of laserinduced periodic surface structures (LIPSS) N2 - Laser-induced periodic surface structures (LIPSS) are a universal phenomenon that is accompanying laser materials processing. These surface nanostructures pave a simple way for surface functionalization with numerous applications in optics, fluidics, tribology, medicine, etc. This contribution reviews the current view on the role of electromagnetic scattering in the formation of LIPSS. T2 - Workshop on Theoretical and Numerical Tools for Nanophotonics (TNTN 2020) CY - Berlin, Germany DA - 12.02.2020 KW - Laser-induced periodic surface structures, LIPSS KW - Electromagnetic scattering KW - Finite-difference time-domain calculations PY - 2020 AN - OPUS4-50399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Seuthe, T. A1 - Grehn, M. A1 - Eberstein, M. T1 - Structural phenomena in multicomponent silicate glasses after femtosecond laser pulse irradiation T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials: fundamentals and applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials: fundamentals and applications" CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30915 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Grehn, M. A1 - Seuthe, T. A1 - Reinhardt, F. A1 - Eichler, H. J. A1 - Eberstein, M. T1 - Structural modification of femtosecond laser pulse irradiated potassium-magnesium silicate glasses probed by near edge X-ray absorption spectroscopy T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" CY - Strasbourg, France DA - 2013-05-27 PY - 2013 AN - OPUS4-28809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Derrien, Thibault A1 - Krüger, Jörg A1 - Itina, T. A1 - Höhm, S. A1 - Rosenfeld, A. T1 - Plasmonic origin of near-wavelength laser-induced periodic surface structures on silicon: double-pulse experiments and theory T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials:fundamentals and applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials:fundamentals and applications" CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30916 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Stegemann, B. A1 - Schüle, M. A1 - Schultz, C. A1 - Richter, M. A1 - Pahl, H.-U. A1 - Endert, H. A1 - Rau, B. A1 - Schlatmann, R. A1 - Quaschning, V. A1 - Fink, F. T1 - Novel Laser Structuring Method for Chalkopyrite Solar Cells T2 - Marie Sklodowska-Curie Symposium on the Foundations of Physical Chemistry T2 - Marie Sklodowska-Curie Symposium on the Foundations of Physical Chemistry CY - Warsaw, Poland DA - 2011-11-18 PY - 2011 AN - OPUS4-24920 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Beke, S. A1 - Sugioka, K. A1 - Midorikawa, K. T1 - Near-IR femtosecond and VUV nanosecond laser processing of TeO2 crystals in air T2 - SPIE Photonics West Conference: Laser Applications in Microelectronics and Optoelectronics Manufacturing XV T2 - SPIE Photonics West Conference: Laser Applications in Microelectronics and Optoelectronics Manufacturing XV CY - San Francisco, CA, USA DA - 2010-01-25 PY - 2010 AN - OPUS4-20558 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Krüger, Jörg A1 - Rosenfeld, A. A1 - Stoian, R. A1 - Garrelie, F. A1 - Colombier, J.-P. A1 - Stoian, R. T1 - Nanostructuring of solid surfaces basec on laser-induced periodic surface structures (LIPSS): recent experimental and theoretical approaches T2 - Poster-Session im Rahmen des deutsch-französischen Kolloquiums "French-German Research: 50 years In The Light Of The Laser" T2 - Poster-Session im Rahmen des deutsch-französischen Kolloquiums "French-German Research: 50 years In The Light Of The Laser" CY - Berlin, Germany DA - 2010-11-05 PY - 2010 AN - OPUS4-22324 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Derra, U. A1 - Mescheder, H. A1 - Winands, K. A1 - Emonts, C. A1 - Comanns, P. A1 - Krüger, Jörg A1 - Kirner, Sabrina A1 - Skoulas, E. A1 - Tsibidis, G.D. A1 - Stratakis, E. T1 - Mimicking lizard-like surface structures upon ultrashort laser pulse irradiation of inorganic materials N2 - The wetting behavior of material surfaces can be controlled by surface structures. We functionalized inorganic material surfaces, such as steel, titanium alloy and silicon, to modify the wetting behavior using ultrashort laser pulses (fs- to ps-range). The laser processing was performed by scanning the laser beam across the surface of initially polished flat sample material. A combined experimental and theoretical study of the laser processing parameters (peak fluence, scan velocity, line overlap) allowed the identification of different regimes associated with characteristic surface morphologies (laser-induced periodic surface structures, grooves, micro cones, dimples, etc.). Analyses of the surface using optical as well as scanning electron microscopy allowed the identification of morphologies providing the optimum similarity to the natural skin of lizards. For mimicking skin structures of moisture-harvesting lizards towards an optimization of the surface wetting behavior, additionally, a two-step laser processing strategy was established for realizing hierarchical micro- and nanostructures. In this approach, a laser-generated regular array of small dimples was superimposed (step 2) to the micron-scaled capillaries processed before (step 1). Optical focus variation imaging measurements finally revealed the three dimensional topography of the laser processed surfaces derived from lizard skin structures. The functionality of these surfaces was analyzed in view of wetting properties. T2 - E-MRS 2016 Spring Meeting, Symposium C: "Laser-material interactions for tailoring future applications" CY - Lille, France DA - 02.05.2016 KW - Laser-induced periodic surface structures (LIPSS) KW - Femtosecond laser ablation KW - Steel KW - Lizard KW - Wetting PY - 2016 AN - OPUS4-36047 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Meissner, Sven A1 - Wasmuth, Karsten A1 - Schwibbert, Karin T1 - Impact of laser-induced periodic surface structures on the bactericidal properties of copper and brass N2 - Surfaces of metallic copper and copper alloys effectively inactivate microorganisms and viruses. However, the exact inactivation mode is still under debate. Main factors are assumed to include direct contact with the metallic surface, influx of Cu(I)/Cu(II) ions and the generation of reactive oxygen species (ROS). Laser-induced periodic surface structures (LIPSS) are frequently reported to act antibacterial, mainly by prevention of bacterial adhesion due to a limited number of possible adhesion points or by increasing the overall surface of intrinsically antibacterial materials. In time-kill experiments with E. coli and S. aureus we analyzed the impact of LIPSS on the toxicity of metallic copper and brass. We also conducted ROS accumulation assays and conclude that the application of LIPSS is not generally straight forward to obtain or improve antibacterial surfaces. Thus, the antibacterial effects of LIPPS. T2 - 2023 Spring Meeting CY - Strasbourg, France DA - 29.05.2023 KW - LIPSS KW - Antimicrobial KW - Reactive oxygen species PY - 2023 AN - OPUS4-58465 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Schillinger, H. A1 - Pahl, H.-U. A1 - Patel, R. A1 - Bovatsek, J. A1 - Desailly, R. A1 - Bulgakova, N.M. A1 - Endert, H. T1 - High Spped Laser Scribe Systems fpr Large Area Thin Film Solar Cells Manufacturing T2 - 24th European Photovoltaic Solar Energy Conference T2 - 24th European Photovoltaic Solar Energy Conference CY - Hamburg, Germany DA - 2009-09-21 PY - 2009 AN - OPUS4-20047 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Krüger, Jörg A1 - Höhm, S. A1 - Rosenfeld, A. T1 - Generation, Control and Mechanisms of the Formation of Periodic Surface Structures on the Nanometer Scale Induced by Femtosecond Laser Pulse Irradiation of Solids T2 - Julius Springer Forum for Applied Physics 2012 T2 - Julius Springer Forum for Applied Physics 2012 CY - Berlin, Germany DA - 2012-06-20 PY - 2012 AN - OPUS4-26141 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Krüger, Jörg A1 - Höhm, S. A1 - Rosenfeld, A. T1 - Generation, control and mechanisms of the formation of femtosecond laser-induced periodic surface structures T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" CY - Strasbourg, France DA - 2013-05-27 PY - 2013 AN - OPUS4-28806 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Bulgakova, N.M. A1 - Bulgakov, A.V. A1 - Zhukov, V. P. A1 - Rosenfeld, A. T1 - Fs-laser processing of metals: pulse duration effects and the role of air ionization T2 - COLA 2009, 10th International Conference on Laser Ablation T2 - COLA 2009, 10th International Conference on Laser Ablation CY - Singapore DA - 2009-11-22 PY - 2009 AN - OPUS4-20490 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Höhm, S. A1 - Koter, Robert A1 - Spaltmann, Dirk A1 - Hartelt, Manfred A1 - Pentzien, Simone A1 - Marschner, St. A1 - Mermillod-Blondin, A. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Femtosecondd laser-induced periodic surface structures on titanium and titanium alloys for tribological applications T2 - European Materials Research Society (EMRS) Spring Meeting 2015, Symposium CC "Laser and plasma processing for advanced applications in material science" T2 - European Materials Research Society (EMRS) Spring Meeting 2015, Symposium CC "Laser and plasma processing for advanced applications in material science" CY - Lille, France DA - 2015-05-11 PY - 2015 AN - OPUS4-32766 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Mann, Guido A1 - Krüger, Jörg A1 - Eberstein, M. A1 - Hainich, S. A1 - Marcinkowski, M. T1 - Femtosecond laser-induced removal of antireflection coatings from textured silicon wafers T2 - SiliconPV 2013, 3rd International Conference on Crystalline Silicon Photovoltaics T2 - SiliconPV 2013, 3rd International Conference on Crystalline Silicon Photovoltaics CY - Hamelin, Germany DA - 2013-03-25 PY - 2013 AN - OPUS4-28049 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Koter, Robert A1 - Hartelt, Manfred A1 - Spaltmann, Dirk A1 - Höhm, S. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Femtosecond Laser-induced periodic surface structures on steel for tribological applications T2 - 12th Conference on Laser Ablation, COLA 2013 T2 - 12th Conference on Laser Ablation, COLA 2013 CY - Ischia, Italy DA - 2013-10-06 PY - 2013 AN - OPUS4-29555 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Höhm, S. A1 - Rohloff, M. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Femtosecond laser-induced periodic surface structures on semiconductors and dielectrics T2 - EMRS Spring Meeting 2011, Symposium J "Laser materials processing for micro and nano applications" T2 - EMRS Spring Meeting 2011, Symposium J "Laser materials processing for micro and nano applications" CY - Nice, France DA - 2011-05-09 PY - 2011 AN - OPUS4-23380 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Höhm, S. A1 - Rosenfeld, A. A1 - Krüger, Jörg T1 - Femtosecond laser-induced periodic surface structures in semiconductors: recent approaches to explain their sub-wavelength periodicities T2 - Summer School 2010 des DFG Schwerpunktprogramms 1327 "Optisch erzeugte Sub-100 nm-Strukturen für biomedizinische und technische Anwendungen" T2 - Summer School 2010 des DFG Schwerpunktprogramms 1327 "Optisch erzeugte Sub-100 nm-Strukturen für biomedizinische und technische Anwendungen" CY - Hanover, Germany DA - 2010-09-20 PY - 2010 AN - OPUS4-21993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Höhm, S. A1 - Rosenfeld, A. A1 - Koter, Robert A1 - Krüger, Jörg T1 - Femtosecond laser-induced periodic surface structures generated in different environments T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser materials processing for micro and nano applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser materials processing for micro and nano applications" CY - Strasbourg, France DA - 2012-05-12 PY - 2012 AN - OPUS4-25521 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Hertwig, Andreas A1 - Koter, Robert A1 - Weise, Matthias A1 - Beck, Uwe A1 - Reinstädt, Philipp A1 - Griepentrog, Michael A1 - Krüger, Jörg A1 - Picquart, M. A1 - Haro-Poniatowski, E. T1 - Femtosecond laser-induced modification and ablation of hydrogenated amorphous carbon films T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser materials processing for micro and nano applications" T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser materials processing for micro and nano applications" CY - Strasbourg, France DA - 2012-05-12 PY - 2012 AN - OPUS4-25522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Grehn, M. A1 - Theiss, C. A1 - Schmitt, F. J. A1 - Kaltenbach, A. A1 - Eichler, H. J. T1 - Femtosecond laser-induced ablation of dielectrics T2 - Topical Meeting "Emerging Trends and Novel Materials in Photonics" of the International Comission for Optics T2 - Topical Meeting "Emerging Trends and Novel Materials in Photonics" of the International Comission for Optics CY - Delphi, Greece DA - 2009-10-07 PY - 2009 AN - OPUS4-20087 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Seuthe, T. A1 - Grehn, M. A1 - Mermillod-Blondin, A. A1 - Eichler, H. J. A1 - Eberstein, M. T1 - Femtosecond laser pulse modification of binary lithium silicate glasses T2 - International workshop on "Laser micro and nano structuring: Fundamentals et applications" T2 - International workshop on "Laser micro and nano structuring: Fundamentals et applications" CY - Paris, France DA - 2012-12-10 PY - 2012 AN - OPUS4-27660 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Müller, Kai A1 - Mirabella, Francesca A1 - Knigge, Xenia A1 - Weise, Matthias A1 - Sahre, Mario A1 - Wasmuth, Karsten A1 - Voss, Heike A1 - Hertwig, Andreas A1 - Krüger, Jörg A1 - Radnik, Jörg A1 - Hodoroaba, Vasile-Dan T1 - Chemical and topographical changes upon sub-100-nm LIPSS formation on titanium alloy N2 - Laser-induced periodic surface structures (LIPSS) have gained remarkable attention as they represent a universal phenomenon that is often accompanying laser-processing. Such LIPSS enable a large variety of different surface functionalizations for applications in the fields of optics, fluidics, tribology, or medicine. Moreover, so-called “high spatial frequency LIPSS” (HSFL) provide an appealing and straightforward way for surface nanostructuring featuring spatial periods even below 100 nm – far beyond the optical diffraction limit. However, the imposed surface functionalities are usually caused by both, topographic and chemical surface alterations. For exploring these effects in detail, multi-method characterizations were performed here for HSFL on processed Ti- 6Al- 4V alloy upon irradiation with near-infrared ps-laser pulses (1030 nm wavelength, ~1 ps pulse duration, 1 – 400 kHz pulse repetition rate) under different laser and scan processing conditions. The sample characterization involved morphological and topographical investigations by scanning electron microscopy (SEM), atomic force microscopy (AFM), stylus profilometry (SP), and white light interference microscopy (WLIM), as well as near-surface chemical analyses by X-ray photoelectron spectroscopy (XPS), hard X-ray photoelectron spectroscopy (HAXPES) and depth-profiling time-of-flight secondary ion mass spectrometry (TOF-SIMS). The results allow to qualify the laser ablation depth, the geometrical HSFL characteristics and provide detailed insights into the depth extent and the nature of the ps-laser-induced near-surface oxidation. Significance for medical applications will be outlined. T2 - E-MRS Spring Meeting 2023 CY - Strasbourg, France DA - 29.05.2023 KW - Laser-induced periodic surface structures (LIPSS) KW - Ultrashort laser processing KW - Hard X-ray photoelectron spectroscopy (HAXPES) KW - Time-offlight secondary ion mass spectrometry (ToF-SIMS) KW - Ti6Al4V alloy PY - 2023 AN - OPUS4-58531 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Knigge, Xenia A1 - Müller, Kai A1 - Mirabella, Francesca A1 - Sahre, Mario A1 - Weise, Matthias A1 - Voss, Heike A1 - Hertwig, Andreas A1 - Wasmuth, Karsten A1 - Mezera, Marek A1 - Krüger, Jörg A1 - Radnik, Jörg A1 - Hodoroaba, Vasile-Dan T1 - Chemical and topographical analyses of ps-laser generated HSFL on titanium alloy N2 - Laser-induced periodic surface structures (LIPSS) enable a large variety of different surface functionalizations for applications in the fields of optics, fluidics, tribology, or medicine. Moreover, high spatial frequency LIPSS (HSFL) provide an appealing and straightforward way for the generation of surface nanostructures featuring spatial periods even below 100 nm – far beyond the optical diffraction limit. However, the imposed surface functionalities are usually caused by both, topographic and chemical surface alterations. For exploring these effects in detail, multi-method characterization was performed here for HSFL processed on Ti-6Al-4V alloy upon irradiation with near-infrared ps-laser pulses (1030 nm wavelength, ~1 ps pulse duration, 1 – 400 kHz pulse repetition rate) under different scan processing conditions. The subsequent sample characterization involved morphological and topographical investigations by scanning electron microscopy (SEM), atomic force microscopy (AFM), stylus profilometry (SP), as well as near-surface chemical analyses by X-ray photoelectron spectroscopy (XPS), hard X-ray photoelectron spectroscopy (HAXPES) and depth-profiling time-of-flight secondary ion mass spectrometry (TOF-SIMS). The results allow to qualify the laser ablation depth, the geometrical HSFL characteristics and provide detailed insights into the depth extent and the nature of the ps-laser-induced near-surface oxidation arising from the laser-processing in ambient air and into the relevance of heat-accumulation effects at high pulse repetition rates. Moreover, the direct comparison of the HAXPES and XPS data reveals the role of surface-covering organic contaminants adsorbed from the ambient atmosphere without ion-sputter depth profiling. Furthermore, reduction of the oxides by sputtering can be avoided. T2 - SPIE Photonics Europe 2024 Conference, Symposium "Lasers and Photonics for Advanced Manufacturing" CY - Strasbourg, France DA - 07.04.2024 KW - Laser-induced periodic surface structures (LIPSS) KW - Ultrafast laser processing KW - Nanostructures KW - Chemical analyses PY - 2024 UR - https://spie.org/photonics-europe/presentation/Chemical-and-topographical-analyses-of-ps-laser-generated-high-spatial/13005-69#_=_ AN - OPUS4-59853 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Hertwig, Andreas A1 - Koter, Robert A1 - Weise, Matthias A1 - Beck, Uwe A1 - Reinstädt, Philipp A1 - Griepentrog, Michael A1 - Krüger, Jörg A1 - Picquart, M. A1 - Haro-Poniatowski, E. T1 - Analysis of femtosecond laser irradiation effects on amorphous hydrogenated hard carbon layers: Combining topometry, micro Raman spectroscopy and microsale mechanical indentation T2 - 11th International Conference on Laser Ablation (COLA 2011) T2 - 11th International Conference on Laser Ablation (COLA 2011) CY - Playa del Carmen, Mexico DA - 2011-11-13 PY - 2011 AN - OPUS4-24189 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -