• ICALEO 2007 Paper #M702 (Laser Micromachining and Energy Field Manufacturing)

    Laser Micromachining and Energy Field Manufacturing
    Authors:
    Wenwu Zhang, GE Global Research; Schenectady NY USA
    Jeffrey Shaw, GE Global Research; Schenectady NY USA
    Andrew Trimmer, GE Global Research; Schenectady NY USA
    Z. Jay Cao, GE Global Research; Schenectady NY USA
    Magdi Azer, GE Global Research; Schenectady NY USA
    Presented at ICALEO 2007

    Micro/nano material processing has become the cornerstone technology for the production of many modern products, and the unique features of laser energymake laser one of the most powerful tools for micro/nano manufacturing. Laser micromachining is flexible and can replicate features with high accuracy...

    $28.00

  • ICALEO 2007 Paper #M704 (Recent Advances in Precision Machining of Various Materials with the Laser MicroJet®)

    Recent Advances in Precision Machining of Various Materials with the Laser MicroJet®
    Authors:
    Bernold Richerzhagen, Synova SA; Ecublens Switzerland
    Tuan Anh Mai, Synova SA; Ecublens Switzerland
    John Keith Stay, Synova SA; Ecublens Switzerland
    Presented at ICALEO 2007

    Laser micromachining employs ultra short pulsed or UV lasers to overcome problems of thermal damage and debris formation. However, the main obstacles in using these types of laser are notably, low ablation rates and high running costs. This paper describes some recent advances made in the precision machining of industrial materials, using the unique capabilities of the Synova Laser Microjet® technology. ...

    $28.00

  • ICALEO 2007 Paper #M705 (Benefits of Non-Polar Assist Liquids As Alternatives to Water Assist in the Laser Machining of Silicon)

    Benefits of Non-Polar Assist Liquids As Alternatives to Water Assist in the Laser Machining of Silicon
    Authors:
    Helen Howard, National Centre for Laser Applications, Nui; Galway Ireland
    Alan Conneely, National Centre for Laser Applications, Nui; Galway Ireland
    Gerard O'Connor, National Centre for Laser Applications, NUI; Galway Ireland
    Rory Jordan, Hewlett Packard; Dublin Ireland
    Thomas Glynn, National Centre for Laser Applications, Nui; Galway Ireland
    Presented at ICALEO 2007

    The use of a water assist has been shown to improve machining efficiency and feature cleanliness for the laser micro machining of features in silicon. However, the wate...

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  • ICALEO 2007 Paper #M801 (Laser-Assisted Diamond Deposition on Copper Substrated using Combustion-Flame Method)

    Laser-Assisted Diamond Deposition on Copper Substrated using Combustion-Flame Method
    Authors:
    H. Ling, University of Nebraska - Lincoln; Lincoln NE USA
    M. Zhao, University of Nebraska - Lincoln; Lincoln NE USA
    Yaoxuan Han, University of Nebraska - Lincoln; Lincoln NE USA
    Yongfeng Lu, University of Nebraska - Lincoln; Lincoln NE USA
    J. Sun, University of Nebraska - Lincoln; Lincoln NE USA
    T. Gebre, University of Nebraska - Lincoln; Lincoln NE USA
    Presented at ICALEO 2007

    Diamond was deposited on metal substrates (Cu, Al, and Fe) in open atmosphere using a C2H2/O2 combustion flame. A continuous CO2 laser was used to irradiate the su...

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  • ICALEO 2007 Paper #M802 (Deposition of the Ni-based Superalloy Films by Pulsed Excimer Laser)

    Deposition of the Ni-based Superalloy Films by Pulsed Excimer Laser
    Authors:
    Joonghan Shin, CLAIM, University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, CLAIM, University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2007

    Ni-based superalloy films were deposited on single crystal Ni-based superalloy substrates from the target with congruent alloy components by pulsed laser deposition (PLD) technique. In this study, substrate temperature, pulse energy, pulse repetition rate and deposition time were selected as independent variables to investigate the effect of each process parameter on epitaxial growth behaviour of the Ni superalloy films. Microstructure and growth behaviour ...

    $28.00

  • ICALEO 2007 Paper #M803 (Microstructural Characterization of Pulsed Laser-deposited Hydroxyapatite Thin Films on Ti-6Al-4V)

    Microstructural Characterization of Pulsed Laser-deposited Hydroxyapatite Thin Films on Ti-6Al-4V
    Authors:
    Guru Dinda, CLAIM, University of Michigan; Ann Arbor MI USA
    Joonghan Shin, CLAIM, University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, CLAIM, University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2007

    Hydroxyapatite (HA), Ca10(PO4)6(OH)2, is the main mineral component of natural bone (~ 70%), shows the most desirable bone response among the bioactive materials. In the present study, HA coatings of approximately 2-3 µm thickness were deposited on Ti-6Al-4V substrate by KrF excimer laser (λ=248 nm, pulse repetition rate = 10Hz, pulse duration = 20 ns, L...

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  • ICALEO 2007 Paper #M804 (Automatic Calibration of a Scanner-Based Laser Welding System)

    Automatic Calibration of a Scanner-Based Laser Welding System
    Authors:
    André Stollenwerk, Institute of Imaging and Computer Vision, RWTH Aachen University; Aachen Germany
    Nicolaj Stache, Institute of Imaging and Computer Vision, RWTH Aachen University; Aachen Germany
    Alexander Olowinsky, Fraunhofer Institute for Laser Technology; Aachen Germany
    Jens Gedicke, Fraunhofer Institute for Laser Technology; Aachen Germany
    Achim Knepper, Institute of Imaging and Computer Vision, Rwth Aachen University; Aachen Germany
    Til Aach, Institute of Imaging and Computer Vision, RWTH Aachen University; Aachen Germany
    Presented at ICALEO 2007

    In pre...

    $28.00

  • ICALEO 2007 Paper #M805 (Monitoring of the Micro-Drilling Process by Detection of Laser-Induced Shock Waves in Air)

    Monitoring of the Micro-Drilling Process by Detection of Laser-Induced Shock Waves in Air
    Authors:
    Andreas Michalowski, Institut für Strahlwerkzeuge; Stuttgart Germany
    Dmitrij Walter, Forschungsgesellschaft für Strahlwerkzeuge mbH; Stuttgart Germany
    Friedrich Dausinger, Forschungsgesellschaft für Strahlwerkzeuge; Stuttgart Germany
    Roland Gauch, Forschungsgesellschaft für Strahlwerkzeuge; Stuttgart Germany
    Presented at ICALEO 2007

    This work presents a method for the determination of different stages of the micro-drilling process including the measurement of the hole depth and the detection of the completion of desired channel morphology. The experiment...

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  • ICALEO 2007 Paper #M806 (Efficient Laser Material Processing using Beam Shaping Optics)

    Efficient Laser Material Processing using Beam Shaping Optics
    Authors:
    Jim Bovatsek, Newport-Spectra Physics; Mountain View CA USA
    Rajesh Patel, Newport-Spectra Physics; Mountain View CA USA
    Presented at ICALEO 2007

    High-power, diode pumped solid state (DPSS) laser processing has become commonplace in both existing and emerging high-tech industries. As these industries grow and mature, there is an increased need for low-cost, high-quality manufacturing techniques. This translates to a demand for increasingly precise and efficient laser processing capabilities. In this work, Newports latest DPSS laser technology is combined with optical beam-shaping techniques to explore the r...

    $28.00

  • ICALEO 2007 Paper #M901 (Femtosecond Laser Micromachining of Metal Surfaces for Lubrication Enhancement)

    Femtosecond Laser Micromachining of Metal Surfaces for Lubrication Enhancement
    Authors:
    Hae Woon Choi, OSU; Columbus OH USA
    Yong Chae Lim, OSU; Columbus OH USA
    Dave Farson, Ohio State University; Columbus OH USA
    Rajiv Shivpuri, OSU; Columbus OH USA
    Yuanjie Wu, OSU; Columbus OH USA
    Presented at ICALEO 2007

    High interface friction is a primary cause for adhesive pickup in cold forging and extrusion of aluminum alloys and of wear of sliding surfaces in thrust bearings and seals. This poster describes investigations of femtosecond laser texturing for reduction of interface friction on sliding surfaces. Direct-write femtosecond pulsed laser micr...

    $28.00

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