ICALEO 2009 Paper #P103 (Evaluation of Laser Weld Monitoring - A Case Study)
Evaluation of Laser Weld Monitoring - A Case Study
Authors:
Ingemar Eriksson, Lulea Univ of Techn; Lulea Sweden
Alexander Kaplan, Lulea Univ of Techn; Lulea Sweden
Presented at ICALEO 2009
On-line monitoring of the quality of laser welding is of interest for many industrial applications. For photodiodes the monitoring strategy usually aims at observing whether the signal exceeds a threshold. This well known technique is mainly based on empirical values, thus the monitoring has to be trained for each application. For improved understanding of the context between the physics of a welding defect generated and the resulting voltage signal, the experiments were observed by high speed im...$28.00
ICALEO 2009 Paper #P102 (The Effect of Moisture Content and Tracheids Orientation in Fibre Laser Cutting of Dry and Wet Pine Wood)
The Effect of Moisture Content and Tracheids Orientation in Fibre Laser Cutting of Dry and Wet Pine Wood
Authors:
Juan Carlos Hernandez-Castaneda, The University of Manchester; Manchester Great Britain
Huseyin Kursad Sezer, The University of Manchester; Manchester Great Britain
Lin Li, The University of Manchester; Manchester Great Britain
Presented at ICALEO 2009
This paper reports a statistical analysis of the multiple-pass laser cutting of dry and wet pine wood with a single mode Ytterbium fibre laser. The laser wood-cutting is a multi-factor process requiring parameter optimization to deliver good quality cuts at optimum process efficiency. This study employs a Des...$28.00
ICALEO 2009 Paper #P101 (Fibre Laser Net-Shape Welding of Steels)
Fibre Laser Net-Shape Welding of Steels
Authors:
Ramadan Eghlio, University of Manchester; Manchester Great Britain
Andrew Pinkerton, University of Manchester; Manchester Great Britain
Lin Li, University of Manchester; Manchester Great Britain
Presented at ICALEO 2009
Welding had traditionally faced two major challenges obtaining a flawless bond (high internal weld quality) and obtaining a smooth surface transition (high external weld quality). While the former has been, and is being, well researched, the latter has received much less attention, despite the fact that post-weld surface finishing treatments such as machining and grinding can be costly or sometimes i...$28.00
ICALEO 2009 Paper #N307 (Large Area Flexible Electronics Fabrication by Selective Laser Sintering of Nanoparticles with a Scanning Mirror)
Large Area Flexible Electronics Fabrication by Selective Laser Sintering of Nanoparticles with a Scanning Mirror
Authors:
Seung H. Ko, University of California - Berkeley; Berkeley CA USA
Heng Pan, University of California; Berkeley CA USA
Nico Hotz, -; -
Costas Grigoropoulos, University of California; Berkeley CA USA
Presented at ICALEO 2009
The development of electric circuit fabrication on heat and chemically sensitive polymer substrates has attracted significant interest as a pathway to low-cost or large-area electronics. We demonstrated the large area, direct patterning of microelectronic structures by selective laser sintering of nanoparticles witho...$28.00
ICALEO 2009 Paper #N306 (Experimental and Theoretical Study on the Synthesis of Nanofibers by Laser Spinning)
Experimental and Theoretical Study on the Synthesis of Nanofibers by Laser Spinning
Authors:
Felix Quintero, Universidade De Vigo; Vigo Spain
Oliver Dieste, Universidade De Vigo; Vigo Spain
Juan Pou, Universidade De Vigo; Vigo Spain
Fernando Lusquinos, Universidade De Vigo; Vigo Spain
Antonio Riveiro, Universidade De Vigo; Vigo Spain
Presented at ICALEO 2009
Laser Spinning is a new technique to produce ultralong amorphous ceramic nanofibers with tailored chemical compositions. In this method, a high power laser is employed to melt a small volume of the precursor material at high temperatures. At the same time, a supersonic gas jet is injected ...$28.00
ICALEO 2009 Paper #N305 (Laser Precision-Based Graphene Growth Processes)
Laser Precision-Based Graphene Growth Processes
Authors:
Sarah Bertke, Mound Laser and Photonics Center; Miamisburg OH USA
David Tomich, Air Force Research Laboratory; Wright Patterson Afb OH USA
John Hoelscher, Air Force Research Laboratory; Wright Patterson Afb OH USA
Ronald Jacobsen, Mound Laser & Photonics Center; Miamisburg OH USA
Presented at ICALEO 2009
We report studies of laser methods for fabricating large-area, high-quality graphene. Common methods for graphene growth (PLD, MBE, thermal decomposition of SiC) apply energy evenly across an entire substrate, leading to simultaneous nucleation of graphene crystals in many locations and thus poor con...$28.00
ICALEO 2009 Paper #N303 (Laser-Assisted Selective Removal of Metallic Carbon Nanotubes)
Laser-Assisted Selective Removal of Metallic Carbon Nanotubes
Authors:
M. Mahjouri-Samani, University of Nebraska-Lincoln; Lincoln NE USA
Y.S. Zhou, University of Nebraska-Lincoln; Lincoln NE USA
W. Xiong, University of Nebraska-Lincoln; Lincoln NE USA
Y. Gao, University of Nebraska-Lincoln; Lincoln NE USA
M. Mitchell, University of Nebraska-Lincoln; Lincoln NE USA
Y.F. Lu, University of Nebraska-Lincoln; Lincoln NE USA
Presented at ICALEO 2009
Semiconductive single-walled carbon nanotubes (S-SWNTs) have been ideal building blocks for future nanoelectronic devices. However, current techniques of carbon nanotube (CNT) growth yield ...$28.00
ICALEO 2009 Paper #N302 (Simultaneous Growth of Single-Walled Carbon-Nanotube Bridge Structures Using Optical Near-field Effects)
Simultaneous Growth of Single-Walled Carbon-Nanotube Bridge Structures Using Optical Near-field Effects
Authors:
W. Xiong, University of Nebraska-Lincoln; Lincoln NE USA
Y.S. Zhou, University of Nebraska-Lincoln; Lincoln NE USA
M. Mahjouri-Samani, University of Nebraska-Lincoln; Lincoln NE USA
Y. Gao, University of Nebraska-Lincoln; Lincoln NE USA
W.Q. Yang, University of Nebraska-Lincoln; Lincoln NE USA
K.J. Yi, University of Nebraska-Lincoln; Lincoln NE USA
X.N. He, University of Nebraska-Lincoln; Lincoln NE USA
M. Mitchell, University of Nebraska-Lincoln; Lincoln NE USA
Y.F. Lu, University of Nebraska - Lin...$28.00
ICALEO 2009 Paper #N301 (Rapid Growth of Carbon Nanotubes using Laser-induced Chemical Vapor Deposition)
Rapid Growth of Carbon Nanotubes using Laser-induced Chemical Vapor Deposition
Authors:
J. B. Park, Gwangju Institute of Science of Technology; Gwangju South Korea
M. S. Jeong, Advanced Photonics Research Institute; Gwangju South Korea
Sungho Jeong, Gwangju Institute of Science of Technology; Gwangju South Korea
Presented at ICALEO 2009
This paper presents the growth of single-walled (SW) and multi-walled (MW) carbon nanotubes (CNTs) by laser-induced chemical vapor deposition (LCVD) on a transparent substrate at room temperature. For the CNT growth, multiple catalyst layers (Ni/Al/Cr or Fe/Al/Cr) are irradiated from the backside through the transparent substrate with a...$28.00
ICALEO 2009 Paper #N207 (Laser-Assisted Synthesis of Epitaxial Graphite and Graphene on Sic Single Crystals (Invited Presentation, 40 minutes))
Laser-Assisted Synthesis of Epitaxial Graphite and Graphene on Sic Single Crystals (Invited Presentation, 40 minutes)
Authors:
Alberto Salleo, Stanford University; Stanford CA USA
Michael Toney, Slac; Menlo Park CA USA
Sangwon Lee, Stanford University; Stanford CA USA
Presented at ICALEO 2009
Much exciting materials physics centered around graphene has been uncovered since the realization that self-standing graphene sheets are stable. The synthesis of graphene however is still problematic.
We present an alternative route to epitaxial graphene (EG) synthesis that promises to be scalable and possibly expanded to SiC-on-Si substrates. We use pulsed excimer laser radiatio...$28.00
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