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This work deals with the design of a small kitchen appliance with a weighing function integrated into a control loop in order to prevent unbalanced movement of the appliance during operation. In this particular case, the weighing should be appropriate for larger amounts (up to 5 kg) of ingredients. The …

Minimally invasive surgery is one of the most promising trends in medicine. Despite of its obvious advantages - the use of small incisions reducing trauma and risk of infection - it still represents a great challenge for the surgeon, as visual guidance and dexterity are severely impaired. In the case …

Engineered nanofibers and nanoparticles are recognized as capable of inducing cellular perturbations according to the oxidative stress paradigm or by interacting directly with biological membranes. A number of authors in their investigations with the nanofibres and nanoparticles has reported the ability of nanofibers and nanotparticle to cause the different damage …

The main purpose of this thesis is to describe the inhomogeneous phase of a layered system. The phase is the result of the competition between attractive interactions and the long range Coulomb repulsive force (LRCF). In order to achieve this, two different strategies are applied. The first is within the …

Solving real-life optimization problems numerically is often very time demanding, because of high complexity of the simulations that are usually involved. Solving such problems becomes highly impractical for this reason and can even lead to use of less complex and also less accurate models. Fortunately, evolutionary algorithms, often used in …

Over the last decade we have been witnessing rapid development of telecommunication networks and services, in particular in the filed of new wireless network technologies. On different markets users are able to communicate using different wireless technologies. The first two generation of mobile networks (i.e. NMT and GSM) were developed …

Magnetocaloric materials are promising materials for magnetic refrigerators which would substitute present compressor refrigerators. They work on the principle of the magnetocaloric effect (MCE), where the magnetocaloric material increases its temperature when exposed to an external magnetic field. These new type of refrigerators are energetically more efficient and environmentally friendly. …

The theory behind scanning tunneling microscopy and spectroscopy is presented and the basic manipulation techniques are described. Construction details of a low-temperature scanning tunneling microscope for single atom manipulation experiments are given. Single crystal copper (111) and (211) surfaces are studied. Single atom extraction, followed by lateral manipulation procedures is …

In my doctoral dissertation, I primarily devoted my attention to the modifying surface properties of superparamagnetic maghemite nanoparticles. Superparamagnetic maghemite nanoparticles were synthesized using co-precipitation method from an aqueous solution of Fe (II) and Fe (III) ions. The size of the nanoparticles was controlled with aging time at pH = …

The sillenites Bi12MO20 (M = Si, Ge, Ti, Pb, Mn, B1/2P1/2) have been recognised as promising bulk materials for electronic applications because their dielectric properties (5.5 GHz: ε = 37.4 - 41, τf = -19 – (-84) ppm/K, Q x f = 800 - 8100 and Tsin = 680 - …