introduction: the aim of this study was to evaluate the morphological changes and quantitatively assess the roughness of dentin after the ablation with a ytterbium-doped potassium yttrium tungstate (yb: kyw) thin-disk femtosecond pulsed laser of different fluences, scanning speeds and scanning distances. method: twelve extracted human premolars were sectioned into crowns and roots along the cem...

hdpe monofilaments were obtained using different extruders and drawn by post-extruder equipments. after solidification, drawn and undrawn monofilaments (draw ratio 7:1) were irradiated with 10 mev electron beams in air at room temperature at 25, 50, 75, 100 and 125 kgy dose ranges to induce a network structure. hdpe crosslinking was studied on the basis of gel content measurements. the fibers w...

The theory, design and experimental results of a wideband 140 GHz, 1 kW pulsed gyro-traveling wave amplifier are presented. The gyro-TWA operates in the HE(0,6) mode of a novel cylindrical confocal waveguide using a gyrating electron beam. The electromagnetic theory, interaction theory, design processes and experimental procedures have been described in detail. The experiment has produced over ...

Abstract The use of pulsed mode scanning electron microscopy cathodoluminescence (CL) for both hyperspectral mapping and time-resolved measurements is found to be useful the study hybrid perovskite films, a class ionic semiconductors that have been shown beam sensitive. A range acquisition parameters analysed, including current (either continuous or operation), their effect on CL emission discu...

The Institute for Pulsed Power and Microwave Technology (IHM) is doing research in the areas of pulsed power technologies for material processing and biological applications as well as microwave technologies for plasma heating and material processing. It is doing research, development, academic education and, in collaboration with the KIT Division IMA and industrial partners, the technology tra...