CZ – Page 2 – TechConnect Briefs

Round Monodisperse Nanodiamonds: Towards Highly Bright, Biologically Inert Probes for Fluorescence Imaging

Rehor I., Slegerova J., Havlik J., Stursa J., Petrakova V., Turner S., Van Tendeloo G., Dai L., Richter J., Fiserova A., Cigler P., IOCB AS CR, CZ

Fluorescent nanodiamonds (FNDs) are extremely promising luminescent probes and sensors in biomedical research, possessing unique properties such as absolute photostability and high biocompatibility. Here we present a complex route towards bioapplicable FNDs. First we developed [...]

Preparation of Photocatalytic Silicon Core-shell Nanoparticles Covered by ZnS Shell in Solid-Gas Reaction

Dvorsky R., Praus P., Svoboda L., Matýsek D., Dropa T., Trojková J., Šollová K., VŠB-Technical University of Ostrava, CZ

For easy handling in some practical processes, active nanoparticles are usually deposited on surfaces of larger carrier particles. In our previous work, the particles of montmorillonite MMT with a mean size of 300 nm served [...]

Micellar solutions as environmentally-friendly agents for cleaning artworks

Rathousky J., Remzova M., Zouzelka R., J. Heyrovsky Institute of Physical Chemistry, AS CR, CZ

Micellar solutions and microemulsions are efficient agents for cleaning artworks, especially for the selective removal of aged polymeric coatings from the surface of wall paintings. We have aimed at the development of a generalized method [...]

Modeling and Simulation of Surface Acoustic Wave Chemical Sensors

Husak M., Laposa A., Kroutil J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

In this paper, we present the design and modeling considerations of SAW (Surface Acoustic Wave) chemical sensors based on various structures. These sensors can be used for identifying environmental contaminants in large applications scale. Various [...]

Gas Sensor with SAW Structures

Laposa A., Husak M., Kroutil J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

The objective of this paper is presents the modeling and simulation of SAW (Surface Acoustic Wave) gas sensors based on one-port and two-port interdigitated metal structures. These sensors can be used for identifying environmental contaminants [...]

3D Electrostatic Energy Harvester

Janicek V., Husak M., Formanek J., Jakovenko J., FEE CTU in Prague, CZ

This paper discusses the design, optimization, simulation and fabrication of 3D electrostatic MEMS energy harvester. It is one part of self-powered microsystem. It is able to work in all 3 axis which increases the efficiency. [...]

Nanomaterials and nanotechnologies for the conservation of the materials of cultural heritage

Rathousky J., Kalousek V., Zouzelka R., J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, CZ

Conservation science is one of the most complex topics in the materials science as it requires expertise ranging from the history of art and archaeology to the advanced analytical and physical chemistry. However, the recent [...]

Bimodal size distributed silver nanoparticles on copper substrate: in situ heat treating under air and protective atmospheres

Sopousek J., Bursik J., Zalesak J., Pesina Z., Masaryk University, CZ

Ag nano-suspension was prepared by a wet synthetic route. The liquid phase consisted of an organic solvent and the particles had a bimodal distribution with a very narrow size distribution (compare Figure 1). The surface [...]

Activation of Phosphate Olivines LiMPO4 (M = Fe, Mn) by Functionalized Carbon Nanotubes: Application for Cathode Materials of Li-Ion Battery

Kavan L., J. Heyrovsky Institute of Physical Chemistry, CZ

The nanotube-mediated redox wiring is based on a synergic action of adsorbed redox-active molecule, which provides the interfacial charge transfer to the surface and the single-walled carbon nanotube (SWNT), which transports charge to longer distances [...]

Activation of Phosphate Olivines LiMPO4 (M = Fe, Mn) by Functionalized Carbon Nanotubes: Application for Cathode Materials of Li-Ion Battery

Kavan L., J. Heyrovsky Institute of Physical Chemistry, CZ

The nanotube-mediated redox wiring is based on a synergic action of adsorbed redox-active molecule, which provides the interfacial charge transfer to the surface and the single-walled carbon nanotube (SWNT), which transports charge to longer distances [...]