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Your search keyword '"Hubalek Jaromir"' showing total 409 results
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409 results on '"Hubalek Jaromir"'

1. Tantalum electrodeposition using a nanoporous anodic alumina template and a nanostructured gold/nickel-chromium glass-ceramic substrate

Author

Simunkova, Helena, Kolibalova, Eva, Kalina, Lukas, Lednicky, Tomas, and Hubalek, Jaromir

Subjects
Physics - Applied Physics, Condensed Matter - Materials Science
Abstract

Electrodeposition of tantalum coating was performed from an ionic liquid, BMP[Tf2N], in the presence of dissolved anhydrous TaF5 and LiF. Superficial X-ray photoelectron spectroscopy supplemented by an argon ion etching and depth profiling has proven the presence of the tantalum metal inside a thin coating deposited via a porous anodic alumina template. Additionally, tantalum electrodeposition was attempted using a planar sputter-deposited gold coating on a glass-ceramic substrate as the working electrode. Pores emerged within the sputter-deposited gold layer after the Ta electrodeposition step. Nano- to submicrometer large pores were created due to aluminum impurity diffusion through the gold and consequent etching effect of fluorides in the ionic liquid solution. Nanostructured tantalum and nanoporous gold are attractive materials with potential applications in high-performance electronic devices, including sensors, electrocatalysis, and energy storage systems., Comment: Changes were done to the first submitted version. Language corrections. The second version presents more positive results compared to the first one. Co-authors have changed

Published
2024

2. Carbon composite micro- and nano-tubes-based electrodes for detection of nucleic acids

Author

Huska Dalibor, Trnkova Libuse, Adam Vojtech, Kizek Rene, Jasek Ondrej, Zajickova Lenka, Prasek Jan, and Hubalek Jaromir

Subjects
Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Abstract The first aim of this study was to fabricate vertically aligned multiwalled carbon nanotubes (MWCNTs). MWCNTs were successfully prepared by using plasma enhanced chemical vapour deposition. Further, three carbon composite electrodes with different content of carbon particles with various shapes and sizes were prepared and tested on measuring of nucleic acids. The dependences of adenine peak height on the concentration of nucleic acid sample were measured. Carbon composite electrode prepared from a mixture of glassy and spherical carbon powder and MWCNTs had the highest sensitivity to nucleic acids. Other interesting result is the fact that we were able to distinguish signals for all bases using this electrode.

Published
2011

4. DNA Intracellular Delivery into 3T3 Cell Line Using Fluorescence Magnetic Ferumoxide Nanoparticles

Author

Svoboda, Ondrej, Skopalik, Josef, Baiazitova, Larisa, Cmiel, Vratislav, Potocnak, Tomas, Provaznik, Ivo, Fohlerova, Zdenka, Hubalek, Jaromir, Magjarevic, Ratko, Editor-in-Chief, Ładyżyński, Piotr, Series Editor, Ibrahim, Fatimah, Series Editor, Lacković, Igor, Series Editor, Rock, Emilio Sacristan, Series Editor, Lhotska, Lenka, editor, Sukupova, Lucie, editor, and Ibbott, Geoffrey S., editor

Published
2019
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14. Electrical Characterization of Hydrothermally Synthesized Manganese Dioxide Nanowires with Regard to NO2 Adsorption/Desorption Thermodynamics †

Author

Ministry of Education, Youth and Sports (Czech Republic), 0009-0008-3799-2230, 0000-0003-2144-3620, Smisitel, Petr, Simunkova, Helena, Chmela, Ondrej, Claros, Martha, Vallejos, Stella, Hubalek, Jaromir, Ministry of Education, Youth and Sports (Czech Republic), 0009-0008-3799-2230, 0000-0003-2144-3620, Smisitel, Petr, Simunkova, Helena, Chmela, Ondrej, Claros, Martha, Vallejos, Stella, and Hubalek, Jaromir

Abstract

Self-assembled MnO2 nanowires were hydrothermally synthesized and electrically characterized under different conditions. The nanowires were approximately 3–10 µm long and about 20–100 nm in diameter. Single nanowires were aligned perpendicularly across two parallel gold electrode transducers by means of the dielectrophoresis (DEP) technique. Resistivity changes in synthetic air, nitrogen, and NO2 were tested in a range from 100 °C up to 300 °C. The resistivity changes were observed to account for the oxygen reduction on the NWs’ surface as the electrons were moving from the NWs to the oxygen. The resistivity was explored through a constant current arrangement test. Based on the resistivity changes, electrical properties, such as activation energy and type of semiconductor, were estimated.

Published
2023

20. Aerobic Fitness Level Estimation Using Wearables

Author

Smisek, "Radovan, primary, Nemcova, Andrea, additional, Smital, Lukas, additional, Chlibkova, Daniela, additional, Kralik, Martin, additional, Kolarova, Jana, additional, Myska, Vojtech, additional, Kolarik, Martin, additional, Harvanek, Michal, additional, Arm, Jakub, additional, Bastan, Ondrej, additional, Pospisil, Martin, additional, Sima, Jan, additional, and Hubalek", Jaromir, additional

Published
2022
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