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  • ICALEO 2006 Paper #M1102 (Sintering Nano-particles on Low Temperature Materials)

    Sintering Nano-particles on Low Temperature Materials
    Authors:
    James Sears, South Dakota School of Mines & Technology; Rapid City SD USA
    Jacob Colvin, South Dakota School of Mines & Technology; Rapid City SD USA
    Michael Carter, South Dakota School of Mines & Technology; Rapid City SD USA
    Presented at ICALEO 2006

    Direct Write (or Printing) technologies uses nano-particle inks and pastes to build mesoscale-scale devices. The term mesoscale refers to sizes from approximately 10 microns to 1000 microns, and covers the range between geometries deposited with the more conventional thin film and thick film processes. These processes begins with dispensing of liquid molecula...

    $28.00

  • ICALEO 2006 Paper #M1101 (Nanostructuring in Si using a Femtosecond Laser (Invited Paper))

    Nanostructuring in Si using a Femtosecond Laser (Invited Paper)
    Authors:
    Ming Li, Panasonic Boston Lab; Cambridge MA USA
    Presented at ICALEO 2006

    A femtosecond laser is used as a tool to machine a high-Q photonic bandgap crystal, which consists of a series of ~200-nm holes on a monorail silicon-on-insulator structure. This photonic crystal has exhibited a high transmission peak with Q value of ~700. A Q of 700 suggests that this device is a ~ 2 nm narrow-band filter at telecommunication wavelength. Cross-sectional transmission electron microscopy was used to study the material morphology change after laser irradiation. An amorphous layer of Si was found to be adjacent to the ablated holes. T...

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  • ICALEO 2006 Paper #M106 (Optimisation of TiN thin film synthesis by a novel combined laser/sol-gel processing technique )

    Optimisation of TiN thin film synthesis by a novel combined laser/sol-gel processing technique
    Authors:
    Tamer Ezz, ; Manchester Great Britain
    Philip Crouse, Manchester University; Manchester Great Britain
    Zhu Liu, University of manchester; Manchester Great Britain
    Lin Li, University of manchester; Manchester Great Britain
    Presented at ICALEO 2006

    Of the many methods of laser treatment for improving materials surface properties that have been reported, very few have addressed laser-assisted chemical reaction. In this work in situ titanium nitride and silicon nitride ceramic phases were produced by the reaction of titania and silica sol- gel mixtures, wi...

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  • ICALEO 2006 Paper #M105 (Analysis of Modified Layer Formation into Silicon Wafer by Permeable Nanosecond Laser)

    Analysis of Modified Layer Formation into Silicon Wafer by Permeable Nanosecond Laser
    Authors:
    Etsuji Ohmura, Osaka University; Suita, Osaka Japan
    Kenshi Fukumitsu, Hamamatsu Photonics K.K.; Iwata Japan
    Naoki Uchiyama, Hamamatsu Photonics K.K.; Iwata Japan
    Hideki Morita, Hamamatsu Photonics K.K.; Iwata Japan
    Kazuhiro Atsumi, Hamamatsu Photonics K.K.; Iwata Japan
    Masayoshi Kumagai, Hamamatsu Photonics K.K.; Iwata Japan
    Presented at ICALEO 2006

    When a permeable pulse laser which is focused into the inside of a silicon wafer is scanned in the horizontal direction, a belt-shaped high dislocation density layer including partially polyc...

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  • ICALEO 2006 Paper #M104 (Laser-assisted Combustion-flame Synthesis of Diamond Films)

    Laser-assisted Combustion-flame Synthesis of Diamond Films
    Authors:
    Y.X. Han, University of Nebraska-Lincoln; Lincoln NE USA
    H. Ling, University of Nebraska; Lincoln NE USA
    Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
    Presented at ICALEO 2006

    Diamond and diamond-like carbon (DLC) films were synthesized on tungsten carbide substrates in open atmosphere using a C2H2/O2 combustion flame with a gas ratio (C2H2/O2) of 0.9-1.0. Before and during the synthesizing process, a KrF excimer laser with a pulse width of 23 ns and a wavelength of 248 nm was used to illuminate the reaction area. The surface morphology and structure of the deposited films were studied by...

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  • ICALEO 2006 Paper #M103 (Microstructure and Mechanical Properties of Laser Net Shape Manufactured Inconel 718 and Ti-6Al-4V Components)

    Microstructure and Mechanical Properties of Laser Net Shape Manufactured Inconel 718 and Ti-6Al-4V Components
    Authors:
    Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
    Jinjiang He, Tsinghua University; Beijing Peoples Republic of China
    Wenjin Liu, Tsinghua University; Beijing Peoples Republic of China
    Presented at ICALEO 2006

    Refractory intermetallic compound Nb3Al is expected as a candidate for structural materials operated at much higher temperatures compared to conventional Ni superalloys. However, Nb3Al is difficult to fabricate by conventional methods. This paper presents the research on combination of the synthesizing of A15 Nb-Ti-Al and bcc/B...

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  • ICALEO 2006 Paper #M102 (Fabrication, Characterization and Simulation of Noval 3-D Photonic Bandgap Structures Using Laser Chemical Vapour Deposition)

    Fabrication, Characterization and Simulation of Noval 3-D Photonic Bandgap Structures Using Laser Chemical Vapour Deposition
    Authors:
    H. Wang, University of Nebraska; Lincoln NE USA
    Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
    Z.Y. Yang, University of Nebraska; Lincoln NE USA
    Presented at ICALEO 2006

    3-D photonic bandgap (PBG) structures were fabricated using laser chemical vapor deposition (LCVD) in combination of self-assembly of silica particles on silicon substrates. The multilayer self-assembly of silica particles were formed on silicon substrates using isothermal heating evaporation approach. A CW Nd:YAG laser (1064 nm wavelength) was used as the e...

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  • ICALEO 2006 Paper #M101 (A Microfluidic Bioarray System using Laser-machined Surface Microstructures (Invited Paper))

    A Microfluidic Bioarray System using Laser-machined Surface Microstructures (Invited Paper)
    Authors:
    Tadatake Sato, National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba, Ibaraki Japan
    Aiko Narazaki, National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba, Ibaraki Japan
    Ryozo Kurosaki, National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba, Ibaraki Japan
    Thomas Gumpenberger, National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba, Ibaraki Japan
    Hiroyuki Niino, National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba, Ibaraki Japan<...

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  • ICALEO 2006 Paper #M1006 (Femtosecond Laser Machining of Dielectric Materials for Biomedical Applications)

    Femtosecond Laser Machining of Dielectric Materials for Biomedical Applications
    Authors:
    Burr Zimmerman, The Ohio State University; Columbus OH USA
    Hae Woon Choi, The Ohio State University; Columbus OH USA
    Jeremy Steach, The Ohio State University; Columbus OH USA
    Dave F Farson, The Ohio State University; Columbus OH USA
    L James Lee, The Ohio State University; Columbus OH USA
    Susan V Olesik, The Ohio State University; Columbus OH USA
    Presented at ICALEO 2006

    Femtosecond laser ablation of borosilicate glass and fused silica for fabrication of microfluidic channels for biomedical device applications is studied. Channel widths ranging...

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  • ICALEO 2006 Paper #M1005 (Machinability of Laser Heated Silicon Nitride Ceramics during a Turning Process)

    Machinability of Laser Heated Silicon Nitride Ceramics during a Turning Process
    Authors:
    Marian Jankowiak, Poznan University of Technology; Poznan Poland
    Konrad Bartkowiak, Poznan University of Technology; Poznan Poland
    Presented at ICALEO 2006

    The Si3N4 ceramics, due to low density, very good wear, corrosion and heat resistance, is important material with many engineering and medical applications. However the high hardness (2125HV) and brittleness ceramics made serious difficulties of machining. Laser Assisted Machining (LAM) is currently developed and under research method of hard Si3N4 ceramics machining. It is a hybrid process of the machining, where the material is heated via ...

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