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The following topics are discussed: electronic materials, technologies, devices, and simulation; integrated electronics and chip design; test, diagnostics, and fault tolerance; embedded systems; dependable computing; systems, instrumentation and communication; RF solutions; biomedical electronics; power electronics; signal processing.
Life and electricity are closely connected. All membranes, first the plasma membrane but also intracellular membrane systems, are electrically charged. Virtually all functions of cells and tissues are somehow controlled by the electric field within membranes. It influences the conformation of membrane residual proteins and thereby the functionality of the membrane. Ionic channels in membranes can...
This paper describes ongoing work for implementing a distributed multi-robot system for measuring various physical properties of the environment in a coordinated manner. Modeling spatial distributions of physical quantities such as temperature, illumination, humidity, gas concentrations, or magnetic flux provides an opportunity to observe how these distributions change in time, how to utilise the...
The lecture will summarise results of the long-term project concerning processing and analysis of multimodal retinal image data. The project is run at the Dept. of BME, FEEC, Brno University of Technology in frame of the DAR research centre coordinated by the Inst. of Information Theory and Automation, Cz.Ac.Sci. Prague, in cooperation with the Clinic of Ophthalmology, University Erlangen (D) and...
In this paper, a generic approach to predictive control of inverter-fed loads, called ldquodirect controlrdquo, is presented. The controlled variable can be either current or flux, depending on the type of the load (e.g., passive or active). Nevertheless, in both cases the same basic principle is applied. The prediction algorithm dictates the inverterpsilas voltage space vector to be applied in order...
In the last decade, there has been a considerable increase of interest in fault-tolerant computing due to dependability problems related to process scaling, embedded software, and ubiquitous computing. In this paper, we discuss an approach to fault-tolerance which is inspired by biological systems. Biological systems are capable of maintaining their functionality under a variety of genetic changes...
Some critical (but little-recognized) aspects of nanoscale electron device technology are considered. It is noted that, according to history, nanoscale electron devices will have to address some convergence of an abundance and a scarcity. A major impediment to progress is the emergence of a variety of granularities - with the main problem being less the granularities themselves than the entrenched...
The quantum mechanics courses usually do not discuss the transforms between coordinate- and momentum- presentations relevant to the basic quantum well tasks. If we use instead momentum p the wavenumber k=p/h then those transforms are analogous to time-dependent versus frequency-dependent transforms in classical signal processing. The paper presents numerical calculations for single and multiple quantum...
The carbon nanotubes and fullerenes are the key structures of the modern nanotechnology and advanced infotechnology. A short history of relevant research is given including the generally unknown publications from 1950-ies. As a practical study problem the modeling results obtained with ab-initio software VASP for an armchair-zigzag nanotube junction (4,4)/(8,0) are discussed.
Electrowetting is a phenomenon that has attracted much attention in recent years for application in lab-on-a-chip devices. The electrical control of contact angle can be used to transport liquid droplets by capillary forces. We present experimental work that aims to clarify the role played by the dielectric breakdown of surface coatings. The relation between electrowetting and dielectric breakdown...
In this paper, short channel effects of the sub-100nm modified symmetric double-gate MOSFET that made of dual material gates and oxide stack with high-k material on top of a SiO2 layer examined and compared with conventional symmetric double-gate MOSFET using two-dimensional (2-D) simulation. This structure reduces short channel effects (SCEs) such as drain-induced barrier lowering (DIBL), hot electron...
Modelling of SiC based Schottky interfaces using shape factor (SF) is a novel approach for the SiC Schottky interfaces. The determining of the behaviour of the charge carrier transport under influence of the change of parameters like impurity concentration, barrier height and ambient temperature is discussed. Unified handling methodology has been demonstrated.
In the present work the results of transmission electron microscopy (TEM) and electron diffraction investigations of subcontact layers in n0-n- 4H-SiC epistructure after diffusion welding (DW) are given. TEM examinations show that at the boundary between aluminium and silicon carbide the interface layer of ~ 25 nm thickness exists and this layer is of strip character. The image of contact area obtained...
We propose to use the synergy of analytical and numerical methods for simulation of slow-wave structures in order to reveal properties of the structures and improve the quality of design. As an example, the multi-conductor method and the CST software package Microwave Studio are effectively used for solution of problems related to meander slow-wave structures.
Edge finite elements are typically used in many modern applications, where modeling of distribution of electromagnetic fields is required. These elements differ from nodal finite elements in the fact that they provide continuity of tangential components of the field variables across element interfaces while allowing discontinuity in normal components. This, in turn, eliminates the so-called spurious...
The performance of design of inductors with ferrite cores is also dependent on the accuracy of assumed data about magnetic properties of cores. For toroidal cores it is shown that the magnetic spectra of ferrites and cores, manufactured from the ferrites, may differ essentially if cores cross-section dimensions are greater than the penetration depth of magnetic field. It is ascertained that relation...
Progress of medical ultrasonic diagnostics systems and methods is strongly dependent on new research findings in non-linear interaction of waves and tissues. Advanced and complex solutions of non-linear ultrasound signals transformations in tissues are developed. Developments are based on derivation of second order differential equations, their calculations using finite elements or finite difference...
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