Mechatronics Engineering

In this study, indium tin oxide (ITO) monolayer and ITO-Titanium-ITO (ITI) trilayers on glass were prepared by DC magnetron sputtering. The structural, optical and electrical characteristics were investigated by using stylus profilometry, spectroscopic ellipsometry, scanning electron microscopy (SEM), atomic force microscopy (AFM) and four point probe. The results show that the ITI trilayers have transparency comparable to the single-layer ITO in the visible spectrum.

Magnetron sputtering method is cheap, very clean and environmentally friendly method since it operates under vacuum conditions and produce no gases and liquid extracts. Using 100 mTorr pure Argon carrier about 500V-DC voltage is applied between the electrodes and pure copper and silver targets were used for the textile coating. The textiles coated by magnetron sputtering were studied in terms of antibacterial activity and wettability. The surface characteristics and film thicknesses of these depositions on the textiles (60% polyester and 40% cotton) were investigated by their SEM images. Hydrophobicity properties and surface tension characteristics of the textiles coated were determined by liquid drop tests. The inactivation of the bacteries: E.Coli and S. Aureus was studied by using the biological zone tests.

The aim of this study is to modify the surfaces of different materials by using two different methods which are magnetron sputtering coating technique and atmospheric plasma torch. The antibacterial properties after magnetron sputtering deposition with Copper and Silver thin films of textiles against Staphylococcus aureus and Escherichia coli bacteria were investigated by using parallel streak method. Inactivation of Candida albicans fungi on denture acrylic discs after atmospheric plasma torch application was also studied. The electron microscobe images, antimicrobial properties and wettability properties of textiles were also investigated after modifiaction of surfaces.

In this study a new method for finding exact solution of the Cauchy problem subject to a discontinuous initial profile for the two dimensional scalar conservation laws is suggested. For this aim, first, some properties of the weak solution of the linearized equation are investigated. Taking these properties into consideration an auxiliary problem having some advantages over the main problem is introduced. The proposed auxiliary problems also permit us to develop effective different numerical algorithms for finding the solutions. Some computer experiments are carried out.

The aim of this work was to study the optical and electrical properties of thick ITO-Ag-ITO multilayer coating onto glass. ITO-Ag-ITO coatings with thickness of ITO layers 110 nm, 185 nm and intermediate Ag layer thickness 40 nm were prepared by magnetron sputtering. The optical, electrical and atomic properties of the coating were examined by scanning electron microscope, atomic force microscope, X-ray diffraction analysis and ultraviolet-visible spectroscopy. PACS: 78.20.-e, 78.66.Sq.

For today’s automated vehicles and robots’ technologies in driving dynamics, the elasticity in movements has a critical role. These movements can be simulated by using some platforms which are staying on balance. It is possible to perform a few linear and angular movements according to the platform model. The purpose of this study is to provide an independent drive and keep the carrier shaft on balance while the vehicle is on the move. The steering system on the vehicle has been specialized and a balancing platform on the vehicle has been achieved to keep the balance. The vehicle in this study has four wheels and they; all have been independently designed and controlled for the requested rotation. Ackermann Steering Geometry has been used for calculations of wheel angles. In this study, the Stewart platform which has a 3x3 connection model and parallel structure has been designed. It is possible to make different linear and angular moves with this model of the platform. The steering...