ICALEO 2005 Paper #M604 (Laser Surface Texturing of Ti-6Al-4V and Controlled Oxide Formation for Improving Biocompatibility)
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 ...$28.00
ICALEO 2005 Paper #M603 (Controlled Laser Cleaning of Artworks via Low Resolution LIBS and Linear Correlation Analysis)
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....$28.00
ICALEO 2005 Paper #M602 (Effect of Pulse Parameters on Laser Cleaning of Copper Oxides)
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 ...$28.00
ICALEO 2005 Paper #M601 (Nd:YAG Laser Surface Treatment of Coating on Polyimide Substrate)
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...$28.00
ICALEO 2005 Paper #M504 (Analysis of Microspike Array Formation on Tungsten Surface with Femtosecond Laser)
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 ...$28.00
ICALEO 2005 Paper #M502 (Measuring UV?Laser in Focus within a Few Seconds - Basic for Laser Micro Manufacturing)
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...$28.00
ICALEO 2005 Paper #M501 (Characteristics and Dynamics of Magnetic-Confined Laser-Induced Silicon Plasmas in Atmosphere)
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...$28.00
ICALEO 2005 Paper #M410 (Microprocessing of Various Materials Using Femtosecond Laser Pulses)
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...$28.00
ICALEO 2005 Paper #M409 (High Rep Rate Picosecond Laser Materials Processing)
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.$28.00
ICALEO 2005 Paper #M408 (Microstructuring Using Femtosecond Pulsed Laser Ablation)
Microstructuring Using Femtosecond Pulsed Laser Ablation
Authors:
Max Groenendijk, University of Twente; Enschede Netherlands
Presented at ICALEO 2005
A self-induced mechanism leading to the formation of periodic microstructures has been observed during femtosecond pulsed laser ablation with a high repetition laser source. The bottom of an ablated area, machined by the direct write method, shows two different kinds of microstructures. Dependant on the process parameters, a periodic ripple or a pillar structure emerges. The parameters leading to these phenomena have been identified as well as the possible variations in aspect ratios and feature sizes. Furthermore the application of such structur...$28.00
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