Microwave Properties of Carbon Nanotubes Grown by Pyrolysis of Ethanol on Nickel Catalyst

The efficiency of carbon nanotubes produced by CVD-method on a nickel catalyst at a protection from microwave radiation is shown. These data are confirmed by scanning electron microscopy, energy disper-sive X-ray analysis and spectral analysis of the microwave radiation in the frequency range 26-40 GHz. The observed value of the transmission coefficient S21, up to – 42.7 dB, is in agreement with considered possible absorption mechanisms of electromagnetic wave energy in carbon nanoscale systems “CNT-nickel nanoparticles”. The application of carbon powder materials in shielding of electromagnetic radiation has been theoretically justified. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3628

Synthesis of the Carbon Nanomaterials Based on Renewable Bioresources

The effectiveness and feasibility of producing nanoscale carbon materials from renewable bioresources were shown as an example marsh mass. The mechanisms of synthesis of amorphous organic carbon from sphagnum moss species modified by a liquid peat phase of humic nature are discussed. A fundamentally new way of producing carbon nanotubes by mechanical activation of amorphous organic carbon is described. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3627

Model of Band Diagram LED White Light in the System of GaN/InGaN

The results of the research of semiconductor multilayer nanostructures suitable for making white light LEDs in the GaN/InGaN with red, green and blue emission spectra formed in a single chip. The methodology and the calculation of the energy levels, the wave functions of the carriers, the electric fields caused by the spontaneous polarization and the piezoelectric effect, the spontaneous emission spectrum and chromaticity coordinates of the total radiation

Nanostructure Changes of Magnetron Copper Films with a Glass Ceramic Substrate

The present paper deals with the results of comprehensive research of heated in the air magnetron copper films by atomic-force and scanning electron microscopy, Raman scattering, IR-Fourier and X-Ray phase analysis, and spectral ellipsometry. According to the results of nano techniques, the relationship between amplitude and phase-frequency components of ellipsometric measurements and phase structure transformations has been established. The structural transition in the vicinity of 573 K, has been found

Self-assembly and Self-organization Processes of Carbon Nanotubes in the Colloidal Systems

The features and patterns of self-organization processes in the diffusion-limited conditions (method of drops) of carbon-containing compounds and carbon nanotubes have been studied. The results of the research influence of the substrate temperature and solvent on the formation of nanoscale fractal structures in sediments of colloidal solutions are provided

Self-assembly and Self-organization Processes of Carbon Nanotubes in the Colloidal Systems

The features and patterns of self-organization processes in the diffusion-limited conditions (method of drops) of carbon-containing compounds and carbon nanotubes have been studied. The results of the research influence of the substrate temperature and solvent on the formation of nanoscale fractal structures in sediments of colloidal solutions are provided

Nanostructure Changes of Magnetron Copper Films with a Glass Ceramic Substrate

The present paper deals with the results of comprehensive research of heated in the air magnetron copper films by atomic-force and scanning electron microscopy, Raman scattering, IR-Fourier and X-Ray phase analysis, and spectral ellipsometry. According to the results of nano techniques, the relationship between amplitude and phase-frequency components of ellipsometric measurements and phase structure transformations has been established. The structural transition in the vicinity of 573 K, has been found

Physics of Hermetic Sealing of Large Portion of Gas Using Magnetic Fluid Membrane

The physical mechanism of hermetic sealing and storing the air cavity of large volume, based on using magnetic fluid membrane is considered in the article. The described method can be used to create devices for sampling and further chemical analysis of gas in mines and at chemical industry enterprises. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3640

Physics of Hermetic Sealing of Large Portion of Gas Using Magnetic Fluid Membrane

The physical mechanism of hermetic sealing and storing the air cavity of large volume, based on using magnetic fluid membrane is considered in the article. The described method can be used to create devices for sampling and further chemical analysis of gas in mines and at chemical industry enterprises. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3640