SK – TechConnect Briefs

MEMS pressure sensor with an AlGaN/GaN based high electron mobility transistor

Vanko G., Dzuba J., Rýger I., Vallo M., Institute of Electrical Engineering, SK

The III Nitrides (III-N), especially gallium nitride (GaN) and its compounds, are very attractive for pressure and strain sensing thanks to their excellent piezoelectric properties. The AlGaN/GaN heterostructure offers high mechanical and chemical stability, operation [...]

In-vitro testing of realgar nanoparticles for treatment of multiple myeloma cells

Balaz P., Sedlak J., Pastorek M., Cholujova D., Bujnakova Z., Institute of Geotechnics, Slovak Academy of Sciences, SK

Realgar As4S4 has been used in traditional Chinese medicine externally or even orally to treat psoriasis,syphilis and malaria.However,its broader healing effect was documented recently.The possibility to synthesize realgar particles as nanosuspensions brings new therapeutic strategies [...]

SMES MRI Device – Alternative for Ecological Energy Storage

Molokac S., Grega L., Rybar P., Rybarova M., Rybarova M., Technical University of Kosiciach, SK

It is well known, that the electrical energy storage in the large scale is basically difficult process. Such a process is marked by the energy losses, as the conversion of electrical energy into another form, [...]

SMES MRI Device – Alternative for Ecological Energy Storage

Molokac S., Grega L., Rybar P., Rybarova M., Rybarova M., Technical University of Kosiciach, SK

It is well known, that the electrical energy storage in the large scale is basically difficult process. Such a process is marked by the energy losses, as the conversion of electrical energy into another form, [...]

Magnetic drug targeting using concept of focused magnet

Jancurova L., Timko M., Bano M., Koneracka M., Repasan M., Kopcansky P., Technical University, Faculty of Electrical Engineering and Informatics in Kosice, SK

Current research on methods to target chemotherapy drugs in the human body includes the investigation of biocompatible magnetic nano-carrier systems, e.g. magnetic liquids such as ferrofluids. The aim of our work was to construct a [...]

Liquid crystals doped by magnetic nanoparticles

Kopcansky P., Tomasovicova N., Koneracka M., Zavisova V., Timko M., Tomco L., Dzarova A., Eber N., Fodor-Csorba K., Toth-Katona T., Vajda A., Jadzyn J., Institute of Exprimental Physics SAS, SK

The aim of this study was to investigate how the shape of magnetic particles dispersed in the liquid crystal influences the critical magnetic field of structural changes. The experiment showed parallel initial orientation between liquid [...]

DC and AC dielectric properties transformer oil based magnetic fluid

Timko M., Kopcansky P., Tomco L., Marton K., Koneracka M., Herchl F., Tomasovicova N., Institute of Exprimental Physics SAS, SK

The comparison of the AC-dielectric breakdown strength of transformer oil based magnetic fluid with pure transformer oil confirmed better insulating properties of magnetic fluid in external magnetic field. The better heat transfer properties provided by [...]

Extracting unburnt coal from black coal fly ash

Kusnierova M., Fecko P., Slovac Academy of Science, SK

Black-coal fly ash from Kosice Power Plant in Slovakia contains between 22 and 25 % of unburnt coal, which is , strictly speaking, a useful component. Studying optimal separation methods of unburnt coal from the [...]

Extracting unburnt coal from black coal fly ash

Kusnierova M., Fecko P., Slovac Academy of Science, SK

Black-coal fly ash from Kosice Power Plant in Slovakia contains between 22 and 25 % of unburnt coal, which is , strictly speaking, a useful component. Studying optimal separation methods of unburnt coal from the [...]

Mechanochemical dry synthesis of nanocrystalline semiconductors

Balaz P., Godocikova E., Izdinsky K., Kovac J., Satka A., Achimovicova M., Institute of Geotechnics of Slovak Academy of Sciences, SK

In recent years semiconductor nanocrystals (QD) have attracted much attention due to their great potential in technological applications. Electronic, optical and other properties of QD with respect to corresponding bulk materials are modified considerably, offering [...]