ICALEO 2009 Paper #C205 (Ultra Short Pulse Laser Generated Surface Textures for Anti-Ice Applications in Aviation)
Ultra Short Pulse Laser Generated Surface Textures for Anti-Ice Applications in Aviation
Authors:
Gert-willem Romer, University of Twente; Enschede Netherlands
Daniel Arnaldo Del Cerro, University of Twente; Enschede Netherlands
R.C.J. Sipkema, Lightmotif B.V.; Enschede` Netherlands
M.N.W. Groenendijk, Lightmotif B.V.; Enschede Netherlands
A.J. Huis in 't Veld, University of Twente; Enschede Netherlands
Presented at ICALEO 2009
By laser ablation with ultra short laser pulses in the pico- and femto-second range, well controlled superimposed micro- and nano-scaled surface textures can be obtained. The micro-scale of the texture is mainly determi...$28.00
ICALEO 2009 Paper #M1001 (Electrode Ablation On Piezoelectric Ceramics by ns-Pulsed Laser Ablation For Sensing Applications)
Electrode Ablation On Piezoelectric Ceramics by ns-Pulsed Laser Ablation For Sensing Applications
Authors:
Stephan Kloss, Renishaw Plc.; Edinburgh Great Britain
Rhodri W.C. Lewis, University of Bath; Bath Great Britain
Andrew Dent, University of Bath; Bath Great Britain
Nick Weston, Renishaw Plc.; Edinburgh Great Britain
Kevyn Jonas, Renishaw Plc.; Wotton-Under-Edge, Gloucestershire Great Britain
Christopher R. Bowen, University of Bath; Bath Great Britain
Duncan P. Hand, Heriot Watt University; Edinburgh Great Britain
Jonathan D. Shephard, Heriot Watt University; Edinburgh Great Britain
Presented at ICALEO 2009$28.00
ICALEO 2009 Paper #M1002 (Self Organized Pattern Induced using Nanosecond Pulsed Laser Processing of Titanium Immersed in Hydrogen Peroxide)
Self Organized Pattern Induced using Nanosecond Pulsed Laser Processing of Titanium Immersed in Hydrogen Peroxide
Authors:
Negar Rasti, University of Waterloo; Waterloo ON Canada
Ehsan Toyserkani, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2009
Nanosecond pulsed Ytterbium fiber laser with the polarized Gaussian beam, is utilized to form the organized periodic microstructures on the titanium surface in two different medium: air, and hydrogen peroxide (HP). SEM and profilometry analyses are used to compare the structures developed in air and hydrogen peroxide. Immersing the sample in the hydrogen peroxide medium changes the periodic space and the height of the mic...$28.00
ICALEO 2009 Paper #M1003 (Visualization of Grain Boundaries by Nanosecond Laser Irradiation for Controlling Microstructures of Metals)
Visualization of Grain Boundaries by Nanosecond Laser Irradiation for Controlling Microstructures of Metals
Authors:
Masahiro Tsukamoto, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Saburo Yagi, Graduate School of Osaka Univ.; Suita, Osaka Japan
Toshiya Shibayanagi, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Masayuki Fujita, Institute for Laser Technology; Suita, Osaka Japan
Nobuyuki Abe, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Presented at ICALEO 2009
Fiber laser spot heating for controlling microstructures is an important technology for production of new functional materials. Function of...$28.00
ICALEO 2009 Paper #M1004 (Characterization of Morphology and Mechanical Properties of Glass Interior Irradiated by Femtosecond Laser)
Characterization of Morphology and Mechanical Properties of Glass Interior Irradiated by Femtosecond Laser
Authors:
Hongliang Wang, Columbia University Dept. of Mechanical Eng.; New York NY USA
Panjawat Kongsuwan, Columbia University Dept. of Mechanical Eng.; New York NY USA
Sinisa Vukelic, Columbia University Dept. of Mechanical Eng.; New York NY USA
Y. Lawrence Yao, Columbia University Dept. of Mechanical Eng.; New York NY USA
Presented at ICALEO 2009
Femtosecond laser pulses were focused in the interior of bulk fused silica specimen. Proper use of optical and laser processing parameters generated structural rearrangement of the material through a therma...$28.00
ICALEO 2009 Paper #M1005 (Surface Stress Modification in Silicon Carbide by Laser Ablation)
Surface Stress Modification in Silicon Carbide by Laser Ablation
Authors:
Ronald Jacobsen, Mound Laser & Photonics Center, Inc.; - USA
Joseph Randi, Penn State Electro-Optics Center; Freeport Pa PA USA
Sarah Bertke, Mound Laser & Photonics Center, Inc.; Miamisburg OH USA
Presented at ICALEO 2009
We report the use of short pulse laser ablation as a technique for mitigation of near surface stress and damage in SiC. Conventional machining, grinding or polishing of SiC renders a damaged surface layer of depth approximately equal to the final peak-to-valley roughness. This damage layer is comprised of compressive stress and represents a threat to the integrity of the mate...$28.00
ICALEO 2009 Paper #M1006 (The Modification of Electric and Photoluminescence Properties of ZnO Thin Films Induced by Laser Irradiation)
The Modification of Electric and Photoluminescence Properties of ZnO Thin Films Induced by Laser Irradiation
Authors:
Yan Zhao, Bejing University of Technology; Beijing Peoples Republic of China
Yijian Jiang, Bejing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
This paper aims to contribute to the understanding of laser irradiation effect on the electric and photoluminescence (PL) properties, surface morphology of ZnO thin films. By optimizing the laser beam quality and optical system, with changing the laser parameters, the carrier concentration and UV PL intensity of ZnO thin films could be increased and modulated in a wide range. At a moder...$28.00
ICALEO 2009 Paper #M1007 (Effects of KrF (248_nm) Excimer Laser Irradiation on Structural and Optical Properties of ZnO Single Crystal)
Effects of KrF (248_nm) Excimer Laser Irradiation on Structural and Optical Properties of ZnO Single Crystal
Authors:
Jie Liu, BeiJing University of Technology; BeiJing Peoples Republic of China
Yijian Jiang, Beijing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
The properties of ZnO single crystal irradiated by a pulsed 248nm excimer laser have been systematically studied by AFM, XRD, photoluminescence and Raman measurements. It was observed that the surface roughness and the grain size on the surface of the irradiated ZnO crystals became larger, as well as their band-edge (BE) emissions at room temperature were found to become stronger and s...$28.00
ICALEO 2009 Paper #M1008 (Wettability Characteristics Variation of PMMA by Means of CO2 Laser Generated Surface Patterns)
Wettability Characteristics Variation of PMMA by Means of CO2 Laser Generated Surface Patterns
Authors:
David Waugh, Loughborough University; Loughborough Great Britain
Jonathan Lawrence, Loughborough University; Loughborough Great Britain
Presented at ICALEO 2009
CO2 lasers can be seen to lend themselves to materials processing applications. These types of lasers have been used extensively in research and industry with the work carried out being well documented. This work investigated the surface modification of PMMA with a CO2 laser in order to vary wettability characteristics. The wettability characteristics of the PMMA were modified by generating a number of patterns of various...$28.00
ICALEO 2009 Paper #M1009 (Effect of Laser Color Marking on the Corrosion Performance of Stainless Steel)
Effect of Laser Color Marking on the Corrosion Performance of Stainless Steel
Authors:
Elin M. Westin, Outokumpu Stainless AB; Avesta Sweden
Petri Laakso, VTT Technical Research Center of Finland; Lappeenranta Finland
James Oliver, Outokumpu Stainless AB; Avesta Sweden
Raimo Penttila, VTT Technical Reseach Center of Finland; Lappeenranta Finland
Presented at ICALEO 2009
With the continuous and rapid development of laser marking technology, the field of applications increases. The method can be used to write text on stainless steel and has even been shown to improve the corrosion performance of the surface. In this work, the suitability of laser marking sta...$28.00