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ICALEO 2005

210 Products.
Page: 1, 2, 3, 4, 5, 6, 7, 8, 9

ICALEO 2005 Paper #M409 (High Rep Rate Picosecond Laser Materials Processing)

ICAL05_M409

High Rep Rate Picosecond Laser Materials Processing
Authors:
Chuck Ratermann, RPMC; O'Fallon MO USA
Bernhard Klimt, Lumera Laser; O'Fallon MO USA
Thomas Herrmann, Lumera Laser; O'Fallon MO USA
Presented at ICALEO 2005

Cold ablation of steel, aluminum, nickel, tungsten carbide, titanium, copper, silicon, Teflon, glass, diamond, ceramics, and other materials will be surveyed with an emphasis on the speed of the processing, the heat affected zone, and the recast. An overview of the methods and tools employed will be presented. This will include results from a 100 kHz laser and from a 500 kHz laser.

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ICALEO 2005 Paper #M410 (Microprocessing of Various Materials Using Femtosecond Laser Pulses)

ICAL05_M410

Microprocessing of Various Materials Using Femtosecond Laser Pulses
Authors:
Udo Loeschner, University of Applied Sciences; Mittweida Germany
Andy Engel, University of Applied Sciences; Mittweida Germany
Steffen Weissmantel, University of Applied Sciences; Mittweida Germany
Guenter Reisse, University of Applied Sciences; Mittweida Germany
Presented at ICALEO 2005

Comprehensive results on femtosecond-laser microstructuring obtained at the laser institute of the University of Applied Sciences Mittweida will be presented. In our In-vestigations we used a femtosecond-laser micromachining station FS150-10 from the 3D Micromac AG Chemnitz equipped with a Ti: Sap...

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ICALEO 2005 Paper #M501 (Characteristics and Dynamics of Magnetic-Confined Laser-Induced Silicon Plasmas in Atmosphere)

ICAL05_M501

Characteristics and Dynamics of Magnetic-Confined Laser-Induced Silicon Plasmas in Atmosphere
Authors:
Y.X. Han, University of Nebraska-Lincoln; Lincoln NE USA
Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
T. Gebre, University of Nebraska-Lincoln; Lincoln NE USA
Presented at ICALEO 2005

The characteristics and dynamics of laser-induced silicon plasmas under the confinement of magnetic field with different intensities in atmosphere have been investigated. A strong magnetic field up to 1.05 Tesla was produced by two permanent magnets. A KrF excimer laser with a wavelength of 248 nm and a pulse width of 23 ns was used to produce plasmas which expanded across...

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ICALEO 2005 Paper #M502 (Measuring UV?Laser in Focus within a Few Seconds - Basic for Laser Micro Manufacturing)

ICAL05_M502

Measuring UV?Laser in Focus within a Few Seconds - Basic for Laser Micro Manufacturing
Authors:
Harald Schwede, PRIMES GmbH; Pfungstadt Germany
Otto Maerten, MOC; Dreieich Germany
Reinhard Kramer, PRIMES GmbH; Pfungstadt Germany
Stefan Wolf, PRIMES GmbH; Pfungstadt Germany
Volker Brandl, PRIMES GmbH; Pfungstadt Germany
Presented at ICALEO 2005

Micro machining with the laser requires very small spots. The focus is often in the range of below 10 micron. With standard beam diagnostic systems it is difficult to observe this tool of the processing. Often these processes are designed to operate in the UV. Standard CCD camera systems are only opt...

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ICALEO 2005 Paper #M504 (Analysis of Microspike Array Formation on Tungsten Surface with Femtosecond Laser)

ICAL05_M504

Analysis of Microspike Array Formation on Tungsten Surface with Femtosecond Laser
Authors:
Etsuji Ohmura, Osaka University; Suita Osaka Japan
Yasumitsu Nomura, Osaka University; Suita Osaka Japan
Hiroyuki Hayashi, Osaka University; Suita Osaka Japan
Tomokazu Sano, Osaka University; Suita Osaka Japan
Yoshinori Hirata, Osaka University; Suita Osaka Japan
Presented at ICALEO 2005

Microspike array can be formed on a tungsten surface by irradiating a femtosecond laser through a very small aperture whose distance from the surface is order of the aperture size. Laser diffracts through the aperture. Therefore we analyzed the intensity distributions ...

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ICALEO 2005 Paper #M601 (Nd:YAG Laser Surface Treatment of Coating on Polyimide Substrate)

ICAL05_M601

Nd:YAG Laser Surface Treatment of Coating on Polyimide Substrate
Authors:
Zhaoxu Tian, University of Central Florida; Orlando FL USA
Aravinda Kar, University of Central Florida; Orlando FL USA
Presented at ICALEO 2005

The objective of this work is to improve the surface properties of coatings on polymeric substrates by laser surface treatment. The coating can be deposited by different techniques such as physical vapor deposition, conventional chemical vapor deposition, laser chemical vapor deposition and low temperature thermal spray. The polymeric substrates can be laser-treated first to create a regular, roll-like texture and carbon-rich laser-modified surface to improve the subs...

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ICALEO 2005 Paper #M602 (Effect of Pulse Parameters on Laser Cleaning of Copper Oxides)

ICAL05_M602

Effect of Pulse Parameters on Laser Cleaning of Copper Oxides
Authors:
Jie Zhang, Columbia University; New York NY USA
Youneng Wang, Columbia University; New York NY USA
Peng Cheng, Columbia University; New York NY -
Y. Lawrence Yao, Columbia University; New York NY USA
Presented at ICALEO 2005

Under single-pulse and multi-pulse modes, the characteristics of copper oxides removal are comparably investigated. A two-dimensional model is utilized to numerically simulate the laser removal process and assist the investigation. In the model, property discontinuity and Stephan and kinetic boundary condition are taken into account, and the moving phase-interface ...

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ICALEO 2005 Paper #M603 (Controlled Laser Cleaning of Artworks via Low Resolution LIBS and Linear Correlation Analysis)

ICAL05_M603

Controlled Laser Cleaning of Artworks via Low Resolution LIBS and Linear Correlation Analysis
Authors:
Marco Lentjes, Laser Centre University of Applied Sciences Muenster; Steinfurt Germany
Johan Meijer, Engineering Technology University of Twente; Enschede The Netherlands
Klaus Dickmann, Laser Centre University of Applied Sciences Muenster; Steinfurt Germany
Presented at ICALEO 2005

Based on a fibre optic miniature spectrometer (spectral range 200-1100 nm, lambda-resolution 2 nm) we have build up a LIBS-system for online monitoring during laser cleaning of artworks. In contrast to common LIBS set-ups with ICCDs our system offers less sensitivity and lambda-resolution....

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ICALEO 2005 Paper #M604 (Laser Surface Texturing of Ti-6Al-4V and Controlled Oxide Formation for Improving Biocompatibility)

ICAL05_M604

Laser Surface Texturing of Ti-6Al-4V and Controlled Oxide Formation for Improving Biocompatibility
Authors:
Nazanin Mirhosseini, The University of Manchester; Manchester UK
Marc Schmidt, The University of Manchester; Manchester UK
Philip Crouse, The University of Manchester; Manchester UK
Lin Li, The University of Manchester; Manchester UK
Mustapha Soufian, Gesco; Manchester UK
Presented at ICALEO 2005

This paper reports the results of surface modification of Ti-6Al-4V using a 75 W Q-switched Nd:YAG ( ?=1064 nm, t=100 ns) laser in air with the ultimate aim of improving osseointegration and biocompatibility. Melting and rapid re-solidification ...

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ICALEO 2005 Paper #M605 (Laser Fabricated Porous Coating on NiTi Shape Memory Alloy)

ICAL05_M605

Laser Fabricated Porous Coating on NiTi Shape Memory Alloy
Authors:
Hau Chung Man, Laser Processing Group, Advanced Manufacturing Technology Research Centre; Kowloon Hong Kong
Presented at ICALEO 2005

Laser surface alloying technique was applied to syntheses a porous coating on NiTi shape memory alloy. The pores are uniformly distributed and are interconnected with each other in the coating. An average pore size of less than 10 micron was achieved. The porous coating is metallurgically bonded to the substrate NiTi alloy. The microstructure and corrosion properties of the coating will be discussed and compared with that of the laser gas nitrided layer. The possibility of applying the alloy with ...

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ICALEO 2005 Paper #M701 (Laser Synthesis of Aligned ZnO Nano Crystals for Large Area UV Emitter (Keynote Presentation))

ICAL05_M701

Laser Synthesis of Aligned ZnO Nano Crystals for Large Area UV Emitter (Keynote Presentation)
Authors:
Tatsuo Okada, Kyushu University; Hakozaki, Fukuoka Japan
Presented at ICALEO 2005

Zinc oxide (ZnO) is one of the most promising material suitable for generating ultraviolet (UV) light. UV stimulated emission from optically-pumped nano-wire-array has been reported by many research groups. Recently it has been reported that nano-structured ZnO crystals also show the good field emission characteristics. A various method has been applied to grow ZnO crystals. We have succeeded in growing large quantities of ZnO nanorods by a newly developed nano-particle-assisted PLD (NAPLD) without using any cat...

$28.00 (USD)

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ICALEO 2005 Paper #M703 (Carbon Nanotube-Based Coatings for Laser Power and Energy Measurements)

ICAL05_M703

Carbon Nanotube-Based Coatings for Laser Power and Energy Measurements
Authors:
John Lehman, NIST; Boulder CO USA
Presented at ICALEO 2005

The optical properties of carbon nanotubes (CNTs) have been investigated in the interest of creating thermal absorbers and advanced coatings for various laser power and energy measurement applications. We present an overview of the desirable optical, thermal and damage properties of carbon nanotubes and propose CNT-based coatings as the next generation of radiometric standards for laser power and energy measurements. In addition we will present the processes by which we have grown CNTs and the extent to which they may be compatible with thermal detectors. Ge...

$28.00 (USD)

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ICALEO 2005 Paper #M704 (Catalyst Deposition and Carbon Nanotubes Growth by Laser-Assisted Chemical)

ICAL05_M704

Catalyst Deposition and Carbon Nanotubes Growth by Laser-Assisted Chemical
Authors:
J. Shi, University of Nebraska-Lincoln; Lincoln NE USA
K. Tan, University of Nebraska-Lincoln; Lincoln NE USA
X.W. Wang, University of Nebraska-Lincoln; Lincoln NE USA
Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
Presented at ICALEO 2005

With the recent advances of the aligned growth of carbon nanotubes (CNTs), there are great interests in CNT based field-emission and MOS transistor applications. However, techniques of deposition of catalysts and growth of carbon nanotubes at desired position are still not fully developed. In this study, we will report a meth...

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ICALEO 2005 Paper #M705 (Laser Thin Film Deposition on Plastic Substrates using Silicon Nanoparticles for Flexible Electronics)

ICAL05_M705

Laser Thin Film Deposition on Plastic Substrates using Silicon Nanoparticles for Flexible Electronics
Authors:
Sachin Bet, University of Central Florida/ School of Optics and Photonics CREOL; Orlando Florida USA
Aravinda Kar, University of Central Florida/ CREOL; Orlando Florida USA
Nathaniel Quick, AppliCote Associates, LLC.; Orlando Florida USA
Presented at ICALEO 2005

The melting temperature of silicon nanoparticles decreases significantly compared to the melting temperature of bulk silicon when the particle size is less than 5 nm. This concept is utilized for reducing the processing temperatures to deposit thin polycrystalline silicon (c-Si) films on plastic substr...

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ICALEO 2005 Paper #M706 (Laser Sintering of Silver Nano-Particle Inks Deposited by Direct Write Technology)

ICAL05_M706

Laser Sintering of Silver Nano-Particle Inks Deposited by Direct Write Technology
Authors:
Jacob Colvin, South Dakota School of Mines & Technology; Rapid City South Dakota USA
Oleg Starovoytov, South Dakota School of Mines & Technology; Rapid City South Dakota USA
James Sears, South Dakota School of Mines & Technology; Rapid City SD USA
Jan Puszynski, South Dakota School of Mines & Technology; Rapid City South Dakota USA
Michael Carter, South Dakota School of Mines & Technology; Rapid City South Dakota USA
Presented at ICALEO 2005

Direct Write Technologies are being used in antennas, engineered structures, sensors, and tissue engineering. Man...

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ICALEO 2005 Paper #M707 (Continuous Production and Online-Characterization of Nanoparticles from Ultrafast Laser Ablation and Laser Cracking)

ICAL05_M707

Continuous Production and Online-Characterization of Nanoparticles from Ultrafast Laser Ablation and Laser Cracking
Authors:
Stephan Barcikowski, Laser Zentrum Hannover e.V.; Hannover Germany
Niko Baersch, Laser Zentrum Hannover e.V.; Hannover Germany
Michael Hustedt, Laser Zentrum Hannover e.V.; Hannover Germany
Ramin Sattari, Laser Zentrum Hannover e.V.; Hannover Germany
Andreas Ostendorf, Laser Zentrum Hannover e.V.; Hannover Germany
Presented at ICALEO 2005

Nano-particulate materials and composites show a remarkable nanoproduct market share of 23% with a volume of 17 billion USD in 2002. Compared to conventional nanoparticle production tec...

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ICALEO 2005 Paper #M708 (Nanometer Ablation and Precision Processing Control Using NSOM-Delivered Femtosecond Laser Pulses)

ICAL05_M708

Nanometer Ablation and Precision Processing Control Using NSOM-Delivered Femtosecond Laser Pulses
Authors:
Chen-Hsiung Cheng, Panasonic Boston Laboratory; Cambridge MA USA
Ming Li, Panasonic Boston Laboratory; Cambridge MA USA
Presented at ICALEO 2005

We have been developing a combined technique of using ultra-fast laser in conjunction with fiber-probe delivery to ablate substrate surface in near-field region. Often it is found too difficult to do an in-situ nanometer machining on a pre-formed nanometer structure using traditional optical microscope due to resolution limited by fundamental diffraction limit. Therefore a processing method with nanometer metrology that can be applied...

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ICALEO 2005 Paper #M801 (Direct Fabrication of Conductive Lines and Resistors on Insulator Boards by Laser Micro-Cladding Electronic Pastes (Invited Paper))

ICAL05_M801

Direct Fabrication of Conductive Lines and Resistors on Insulator Boards by Laser Micro-Cladding Electronic Pastes (Invited Paper)
Authors:
Xiaoyan Zeng, National Engineering Research Center for Laser Processing; Wuhan Peoples Republic of China
Xiangyou Li, National Engineering Research Center for Laser Processing, Huazhong University; Wuhan China
Presented at ICALEO 2005

The technique of laser direct writing has attracted a wide interest in the past ten years because it is a rapid and direct fabrication technique to manufacture the component prototype with small and even micro sizes and without needing masks. Different direct writing methods, such as laser induced chemical vapor d...

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ICALEO 2005 Paper #M802 (Laser Microtechnologies for Passive Elements of Electronic Circuits)

ICAL05_M802

Laser Microtechnologies for Passive Elements of Electronic Circuits
Authors:
Ryszard Pawlak, Technical University of Lodz, Division of Materials Science & Electrotechnology; Lodz Poland
Franciszek Kostrubiec, Technical University of Lodz, Division of Materials Science & Electrotechnology; Lodz Poland
Maria Walczak, Technical University of Lodz, Division of Materials Science & Electrotechnology; Lodz Poland
Mariusz Tomczyk, Technical University of Lodz, Division of Materials Science & Electrotechnology; Lodz Poland
Presented at ICALEO 2005

Varied innovative laser-technologies introduced to manufacturing process of electronic circuits and devices were applie...

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ICALEO 2005 Paper #M803 (Two-Dimensional Transient Modeling of CO2 Laser Drilling of Microvias in High Density Flip Chip Substrates)

ICAL05_M803

Two-Dimensional Transient Modeling of CO2 Laser Drilling of Microvias in High Density Flip Chip Substrates
Authors:
Chong Zhang, Univ. of Central Florida, CREOL; Orlando Florida USA
Islam Salama, Intel-Assembly and Technology Development; Chandler AZ USA
Nathaniel Quick, AppliCote Associates LLC; Orlando FL USA
Aravinda Kar, Univ. of Central Florida, CREOL; Orlando Florida USA
Presented at ICALEO 2005

Thermal modeling is essential to understand the laser-materials interactions and to control CO2 laser drilling of blind microvias (< 50 um) through polymeric dielectric in multilayer electronic substrates. In order to understand the profile of the drilling fr...

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ICALEO 2005 Paper #M804 (Cutting Flexible Printed Circuit Board with a 532nm Q-Switched Diode Pumped Solid State Laser)

ICAL05_M804

Cutting Flexible Printed Circuit Board with a 532nm Q-Switched Diode Pumped Solid State Laser
Authors:
Matt Henry, Powerlase Ltd; Crawley Great Britain
Jozef Wendland, Powerlase Ltd; Crawley West Sussex UK
Paul Harrison, Powerlase Ltd; Crawley West Sussex UK
Duncan Parsons-Karavassilis, Powerlase Ltd; Crawley West Sussex UK
Presented at ICALEO 2005

The authors investigate the high speed laser cutting of flexible printed circuit boards (PCBs) using a low M2 532nm to create features >40 microns in size.
The use of flexible PCBs in portable electronics devices such as laptops, PDAs and mobile phones is increasing as such material offers advantages in terms o...

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ICALEO 2005 Paper #M807 (Laser Exposure System for Flat Panel Display Industry)

ICAL05_M807

Laser Exposure System for Flat Panel Display Industry
Authors:
Kim Kwang-Ryul, LG Electronics Inc.; Pyungtaek, Kyunggido Korea
Yong-Woo Lee, LG Electronics Inc.; Pyungtaek, Kyunggido Korea
Hye-Won Kim, LG Electronics Inc.; Pyungtaek, Kyunggido Korea
In-Tae Park, LG Electronics Inc.; Pyungtaek, Kyunggido Korea
Hyoung-Shik Kang, LG Electronics Inc.; Pyungtaek, Kyunggido Korea
Sang-Bong Lee, LG Electronics Inc.
LG Electronics Inc.; Pyungtaek, Kyunggido Korea
Soon-Kook Hong, LG Electronics Inc.; Pyungtaek, Kyunggido Korea
Presented at ICALEO 2005

When screen size of the Flat Panel Display (FPD) becomes larger, the tradit...

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ICALEO 2005 Paper #M808 (Direct-patterning of Silicon Carbide by Nanosphere-Assisted Pulsed Laser)

ICAL05_M808

Direct-patterning of Silicon Carbide by Nanosphere-Assisted Pulsed Laser
Authors:
Arvind Battula, University of Texas at Austin; Austin TX USA
Senthil Theppakuttai, The University of Texas at Austin; Austin TX USA
Shaochen Chen, The University of Texas at Austin; Austin TX USA
Presented at ICALEO 2005

Optical near-field enhancement obtained between the spheres and substrate by irradiating with laser beam can be used for nano-patterning the hard-to-machine bulk silicon carbide (SiC). For this study a monolayer of silica (SiO2) spheres of 1.76 micorn and 640 nm diameter are deposited on the SiC substrate and then irradiated with an Nd:YAG laser of wavelength 355 nm and 5...

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ICALEO 2005 Paper #P501 (Studies of Frequency-Tripled Nd:YAG Laser in Laser Structuring Process)

ICAL05_P501

Studies of Frequency-Tripled Nd:YAG Laser in Laser Structuring Process
Authors:
Bin Zhang, Hong Kong Poly University; Hong Kong
K.C. Yung, Hong Kong Poly University; Hong Kong
Presented at ICALEO 2005

With the increasing demand for finer lines/spaces on PCB boards, a new technology �laser structuring � has emerged in recent years. In this research, the frequency-tripled Nd:YAG laser is selected as the laser source in laser structuring; this laser is often used in miniaturization machining. This paper describes in detail the processing parameters� influences of lasers and etching process, such as laser power, repetitions, repetition rate, bite size and etching time, on laser st...

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ICALEO 2005 Paper #P507 (Laser Surface Melting of High-Speed Steels for Enhancing Surface Properties)

ICAL05_P507

Laser Surface Melting of High-Speed Steels for Enhancing Surface Properties
Authors:
Hau Chung Man, Laser Processing Group, Advanced Manufacturing Technology Research Centre; Kowloon Hong Kong
Presented at ICALEO 2005

Two high-speed steels (HSS), ASP23 and ASP30 formed by powder metallurgy, have similar chemical compositions (Fe-4.2wt%Cr-6.4wt%W-5wt%Mo-3.1wt%V-1.3wt%C), but with ASP30 containing 8.5% Co, were surface remelted by a 2.5-kW Nd:YAG laser. Metallographical, X-ray diffraction, microhardness, as well as electrochemical corrosion studies illustrate the beneficial effects of laser surface melting (LSM) in enhancing the surface properties of the HSS. The laser-melted zone of the HSS cons...

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210 Products.
Page: 1, 2, 3, 4, 5, 6, 7, 8, 9

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