CZ – Page 3 – TechConnect Briefs

Simple vertical velocity measurement system for different use

Husak M., Jakovenko J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

The measurement of vertical velocity is necessary for different use. The solutions are based on principle of evaluating the change of an atmospheric pressure. The dependence which evaluates the vertical velocity is derived from the [...]

Wireless SensorSystem with Bidirectional Communications

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

The system contains units: wireless, control, actuator, software equipment. RF wireless unit ensures wireless communication between control unit and sensors as well as wireless switch unit. The control unit controls system operation, i.e. communication transfer, [...]

One-chip MOS Structure for Temperature Flow Sensor

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

There is presented a one-chip MOS structure of anemometric sensor system in the paper. The geometric arrangement of temperature sensors allows measurement of temperature gradient. Temperature gradient allows computation of direction of air flow over [...]

Soft plasma polymer coatings based on atomic polymerization

Cech V., Trivedi R., Lichovnikova S., Hoferek L., Brno University of Technology, CZ

Plasma polymerization is a thin film-forming process based on atomic polymerization. Plasma polymer films deposited from organosilicon monomers constitute a special class of dielectric coatings with controllable organic/inorganic character and cross-linking that enable optimization of [...]

Production Technology for Nanofiber Filtration Media

Maly M., Petrik S., ELMARCO, CZ

The theoretical background and technical capabilities of the free liquid surface (nozzle-less) electrospinnig process is described. The process is the basis of both laboratory and industrial production machines known as NanospiderTM and developed by Elmarco [...]

Transparent Conducting Films of Antimony-Doped Tin Oxide with Uniform Mesostructure Assembled from Pre-formed Nanocrystals

Müller V., Rathousky J., Fattakhova-Rohlfing D., J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, CZ

Transparent conducting films of antimony-doped tin oxide (ATO) with a uniform 3D-mesostructure were prepared by self-assembly of crystalline ATO nanoparticles with various antimony content directed by commercially available Pluronic copolymers. The mesostructure of the films [...]

Highly conducting nanosized monodispersed antimony-doped tin oxide particles synthesized via nonaqueous sol-gel method

Müller V., Rathousky J., Fattakhova-Rohlfing D., J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, CZ

Conducting antimony-doped tin oxide (ATO) nanoparticles were prepared by a nonaqueous solution route, using benzyl alcohol as both the oxygen source and the solvent, and tin tetrachloride and various Sb(III) and Sb(V) compounds as tin [...]

Promoting the activity of LiFePO4 (olivine) cathode of Li-ion battery by supramolecular complexes with single walled carbon nanotubes

Kavan L., Exnar I., Graetzel M., J. Heyrovsky Institute of Physical Chemistry, CZ

The amphiphilic Ru-bipyridine complex, NaRu(4-carboxylic acid-4’-carboxylate-2, 2’bipyridine)(4,4’-dinonyl-2,2’bipyridine)(NCS)2 can be used as a surfactant for solubilization of single walled carbon nanotubes (SWNTs) in acetonitrile-t-butanol mixture. The Ru-complex represents a redox functionality of 3.5 V vs. Li/Li+, [...]

Ordered mesoporous films of TiO2 as highly efficient photocatalysts for clean environment

Rathousky J., Kalousek V., Walsh C., J. Heyrovsky Institute of Physical Chemistry, CZ

Photocatalytic oxidation is a promising technology for the purification of air. Providing the surfaces of objects with a finish which is photocatalytically active and exhibits stable illumination-induced superhydrophilicity, is a promising route how to render [...]

Promoting the activity of LiFePO4 (olivine) cathode of Li-ion battery by supramolecular complexes with single walled carbon nanotubes

Kavan L., Exnar I., Graetzel M., J. Heyrovsky Institute of Physical Chemistry, CZ

The amphiphilic Ru-bipyridine complex, NaRu(4-carboxylic acid-4’-carboxylate-2, 2’bipyridine)(4,4’-dinonyl-2,2’bipyridine)(NCS)2 can be used as a surfactant for solubilization of single walled carbon nanotubes (SWNTs) in acetonitrile-t-butanol mixture. The Ru-complex represents a redox functionality of 3.5 V vs. Li/Li+, [...]