In this thesis the linear optical properties of aperiodic metallic photonic crystals are studied. All structures consist of a metal grating on top of a waveguide material. The incident light can excite plasmonic modes in the metal as well as photonic modes in the waveguide underneath. These resonances are coupled to each other. In the first part of the thesis, the samples with a one-dimensional...

Presented is an experimental investigation of the machining characteristics and the effect of wire electrical discharge machine (WEDM) process parameters during machining of Al/ZrO2(p) particulate reinforced metal matrix composite (PRMMC). Experiments are carried out to investigate the effects of input parameters such as dielectric conductivity, pulse width, time between pulses, maximum feed ra...

This study investigates the influence of resistive pre-heating feedstock wire (here called hot-wire) on stability laser-directed energy deposition Duplex stainless steel. Data acquired online during depositions as well metallographic investigations revealed process characteristic and its window. The data, such electrical signals in circuit images captured from side-view interaction zone gave in...

PURPOSE To compare infection rates associated with 2 dressing solutions for metal-skin interfaces. METHODS 60 patients who underwent distraction osteogenesis with external fixators were equally randomised into 2 dressing solution groups (diluted povidone-iodine vs. saline). Fixations were attained using either rigid stainless steel 5-mm diameter half pins or smooth stainless steel 1.8-mm diam...

This paper presents the protective effects of shield wire coupled with Metal Oxide Varistor (MOV) arresters in a distribution network located in a severe lightning area. The presented test case is the IEEE 34-node radial distribution test feeder injected with multiple lightning strokes and simulated with the Alternative Transients Program/ Electromagnetic Transients program (ATP/EMTP). The resp...

Long, straight mesoscale silver wires have been fabricated from AgNO3 electrolyte via electrodeposition without the help of templates, additives, and surfactants. Although the wire growth speed is very fast due to growth under non-equilibrium conditions, the wire morphology is regular and uniform in diameter. Structural studies reveal that the wires are single-crystalline, with the [112] direct...

Statement of problem: Fracture strength of a denture base resin is of great concern, and many approaches have been used to strengthen acrylic resin dentures. Purpose: The aim of this study was to measure the transverse strength of a heat polymerized acrylic resin, after reinforcement with metal wire and two types of glass fibers. Materials and Methods: Forty rectangular specimens (65.0×10.0×3.3...

Although silver nanowire meshes have already demonstrated sheet resistance and optical transmittance comparable to those of sputter-deposited indium tin oxide thin films, other critical issues including surface morphology, mechanical adhesion and flexibility have to be addressed before widely employing silver nanowire networks as transparent conductors in optoelectronic devices. Here, we demons...

Introduction: The MRI RF body coil transmit field can couple to conductive metal structures such as guidewires and implant leads. This can induce currents along the wire, which can cause heating and safety hazards [1, 2]. In this work, we take preliminary steps in investigating the potential of using an array of transmit surface coils to minimize the current induced on guidewires. We also consi...

The increased use of self-ligating bracket systems frequently raises the question of how they compare with conventional ligation systems. An in vitro and clinical investigation was undertaken to evaluate and compare these distinctly different groups, by using five different brackets. The Activa ("A" Company, Johnson & Johnson, San Diego, Calif.), Edgelok (Ormco, Glendora, Calif.), and SPEED (St...