CZ – Page 4 – TechConnect Briefs

Electrospun Nanofiber Layers for Applications in Electrochemical Devices

Rubáek L., Duchoslav J., Zukalová M., Procházka J., Kavan L., Elmarco Ltd., CZ

Low power and/or low energy density belong to main limiting parameters of electrochemical energy storage devices. Increasing of the surface area between an electrolyte and an active electrode material is the way how to improve [...]

Electrospun TiO2 Fibers as a Material for Dye Sensitizied Solar Cells

Duchoslav J., Rubáek L., Kavan L., Zukalová M., Procházka J., Elmarco Ltd., CZ

Electrospinning is a method for producing polymeric fabric with fibers ranging from 50 to 500 nm in diameter. It has been demonstrated that fibrous structure is preserved even after annealing when precursor of inorganic compound [...]

Pressure sensor data processing for vertical velocity measurement

Husak M., Jakovenko J., Stanislav L., Czech Technical University in Prague, CZ

There are design and realization of a sensor system for vertical velocity measurement using pressure sensor in the paper. Problem of nonlinearity due to the exponential function of air pressure versus altitude is discussed in [...]

MEMS and NEMS research for education

Husak M., Jakovenko J., Czech Technical University in Prague, CZ

The paper describes methods of active involvement of students in research work and application of research work results in educational process. Individual tasks are parts of solutions of large research projects. Individual work contributes to [...]

Design and Parameters of Cellulose Filter Media with Polymer Nanofiber Layer

Maly M., Petrik S., ELMARCO s.r.o., CZ

Nanofiber polymer layer deposited on regular cellulose filter media usually shifts resulting air filtration parameters of this material several classes higher. Very fine nanofiber web of basis weight of 0.01 gm-2 to 0.1 gm-2 improves [...]

A comparison of boron hydride- and hydrocarbon-based thiol derivatives assembled on gold surfaces

Base T., Bastl Z., Academy of Sciences of the Czech Republic, CZ

Carbon and boron atoms form extensive series of compounds with hydrogen, hydrocarbons and boron hydrides. This contribution deals with the selected thiol derivatives from both groups of compounds. The mutual comparison of these thiol species [...]

Bacterial desulphurization of brown coals

Fecko P., Kusnierova M., Safarova M., Cablik V., VSB-TU Ostrava, CZ

The aim of this paper is the suitability of evaluation of bacterial leaching applied on the brown coals samples from mine CSA Most. The results of this work show that using clean bacterial cultures of [...]

Bacterial desulphurization of brown coals

Fecko P., Kusnierova M., Safarova M., Cablik V., VSB-TU Ostrava, CZ

The aim of this paper is the suitability of evaluation of bacterial leaching applied on the brown coals samples from mine CSA Most. The results of this work show that using clean bacterial cultures of [...]

Multisensor Network for Distance Data Pick-up

Husak M., Jakovenko J., Vitek T., Czech Technical University in Prague, CZ

The core of the paper describes a multisensor system for measurement and distance data transfer. The realized system for measurement of air temperature, pressure and humidity is described as a example. Eight physical quantities can [...]

Micromechanical GaAs Thermal Convertor for Gas Sensors

Jakovenko J., Lalinsky T., Drzík M., Vanko G., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

This paper discusses design, simulation and fabrication of new Micromechanical Thermal Converters (MTCs) based on GaAs developed for Gas sensors. GaAs MTCs seem to be very attractive for design of thermally based MEMS sensor devices. [...]