By: Norbert Lorenz In recent years the interest in micro-devices, including Micro-Electro-Mechanical-Systems (MEMS), from research institutions, industry and the press has risen considerably. However one of the persisting challenges in the fabrication of such devices is the packaging process. A number of different bonding techniques have been developed but in general they require the entire […]
Effect of Laser Surface Melting on Corrosion Behavior of Aged Duplex Stainless Steel
By: W.K. Chan, C.T. Kwok, K.H. Lo Department of Electromechanical Engineering, University of Macau Duplex stainless steels (DSSs), with a dual phase ferrite–austenite microstructure, have been widely used as the structural components for chemical industries, oil and gas production and offshore applications due to its outstanding corrosion resistance in chloride-containing environments. However, depletion of chromium and […]
Laser-Generated Colloidal Nanoparticles by Laser Ablation in Liquids
By: Stephan Barcikowski Laser Zentrum Hannover e.V., Germany Particular GmbH, Germany Nanomaterials provide an enormous potential for surface coatings, polymer composites coatings as well as new therapeutic methods and medical products. The basis of these new products is nanofunctionalization, which can be subdivided into three different effects. Basis of the functionalization is either a polymer or […]
Remote Laser Welding of Zinc-Coated Sheetmetal Component in a Lap Configuration Utilizing Humping Effect
By: Hongping Gu and Boris Shulkin Stronach Centre for Innovation (SCFI) With the advancement of high power fiber delivery lasers, remote laser welding becomes a reality and furthermore cost reduction on a new laser system in recent years drives adoption of laser welding process into production lines. Remote laser welding takes the advantages of less […]
Laser Scribing of Stainless Steel with and without Work Media
By: Anna Unt, Heidi Piili, Marika Hirvimäki, Matti Manninen, Antti Salminen Lappeenranta University of Technology, Laser Processing Technology Research Group, Finland Machine Technology Centre Turku Ltd, Finland Improving control and decreasing energy needs have been the most addressed problems of chemical industry in recent years. One of the thoroughly researched options has been bringing down the […]