Hemispherical reflectance and internal quantum efficiency measurements have been employed to evaluate the response of Si nanostructured surfaces formed by using random and periodic reactive ion etching techniques. Random RIE-textured surfaces have demonstrated solar weighted reflectance of= 3 ‘?XO over 3001200-nm spectral range even without the benefit of anti-reflection films. Random RIE-textu...

The technique of laser micro-processing has recently found several important and widespread applications in the manufacturing of disk-drive components. Examples provided here include the cleaning of surface contaminants, the formation of “nano-bumps” on disk surfaces for controlled surface texturing or for making nanometer-height standards, and the micro-bending of magnetic head sliders for fli...

The developments of Al and V free, biocompatible Ti-alloy have been the subject researcher in orthopedic joints replacement domain. current article addresses methodology chosen for design, machinability, low-cost surface texturing process a high degree biocompatibility. It is evident that an astonishing increase biocompatibility can be achieved by synchronizing electro-discharge spark energy wi...

Das Kunststoff-Rührreibschweißen ist aufgrund von hohen Schweißnahtfaktoren und Oberflächengüten großem Interesse. Dennoch sind die bisher möglichen Vorschubgeschwindigkeiten begrenzt. Vorangegangene Untersuchungen zeigten ein Verbesserungspotenzial durch eine gezielte Werkzeugoberflächengestaltung. Im Rahmen dieses Beitrages werden systematisch der Einfluss verschiedener Laserstrukturen auf Ve...

The paper proposes a novel approach to increase the performances of sol–gel coating for biomedical applications. In particular, ultrasonic vibration-assisted turning in combination with cryogenic cooling is explored first time generate complex and isotropic texture more prone be coated, and, turn, less corrosion susceptible compared corresponding surfaces generated through conventional machinin...