28 Result(s)
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Article
I. D. Kosobudskii
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Article
Optical Antireflection Matrix and Porous Metamaterials for Optoelectronic Devices
Abstract—Layered antireflection nanostructures based on SiO2/TiO2/SiO2 have been developed for protective glasses of various optoelectronic devices. Optical transmission and reflection characteristics of metamate...
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Synthesis of Titanium Dioxide and Silicon Dioxide Nanoparticles with Intercalated Silver Nanoparticles for Obtaining Multifunctional Coatings on Sodium-Calcium Silicate Glass
An investigation of the properties of multifunctional coatings based on silicon dioxide and titanium dioxide with inclusion of silver nanoparticles in their structure is presented. Methods for obtaining coatin...
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Physical-Chemical Studies of Gaizes as Alternative Raw Materials for the Production of Foam Glass and Foam Materials
Data from physical and chemical studies of gaizes are presented—chemical, phase, and granulometric compositions, degree of crystallinity, and thermal stability in the temperature interval 90 – 1000°C. It is sh...
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Spectral Optical Properties of Polymer Composite Nanomaterials Based on Carbon Nanotubes in a High-Density Polyethylene Matrix
The spectral optical characteristics of polymer composite nanomaterials based on carbon nanotubes (CNTs) in a high-density polyethylene (HDPE) matrix have been measured. The obtained experimental data have bee...
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Particulars of the Sol-Gel Synthesis of Titanium Oxide Micro- and Nanoparticles for Creating a Composite Hybrid Antireflection Coating on Float-Glass
Sol-gel processes occurring during hydrolysis in the presence of the surfactant diethylamine were studied. It is shown that the rate of the hydrolysis of tetrabutoxytitanium with minimal water and in the prese...
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Impact of UV Pulsed Laser Radiation and of the Electron Flow on Dielectric States of Polymer Composite Nanomaterial Based on LDPE Matrix
The influence of the soft electron flow and irradiating pulsed UV laser on dielectric states of polymer composite nanomaterial based on LDPE matrix is experimentally studied. It was shown that irradiation of t...
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Article
Mechanochemical Activation of Sand in the Ago-2 Centrifugal-Planetary Mill
The effect of mechanical dispersion on quartz sand using an AGO-2 centrifugal-planetary mill is investigated. It is shown that for constant comminution time but different intensities of action surface amorphiz...
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Antireflective coatings based on amorphous submicron silica particles for silicate glass: Preparation, morphology of surface, optical properties
The structure and properties of dense and porous single-layer antireflective coatings based on fractal and spherical silica particles, respectively, used for silicate glass have been studied. The conditions ne...
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Antireflecting coatings for glass based on monolayers of amorphous silica nanoparticles
The results of investigations into monolayered antireflective coatings based on silicon dioxide (silica) nanoparticles obtained according to the sol-gel technology using a simple and efficient technique of dip...
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Article
Polymer composites based on polymethylmethacrylate with silver nanoparticles, synthesis and optical properties
A method is devised for the synthesis of nanosized silver particles in a polymethylmethacrylate matrix, and the optical properties of the resulting metal-containing nanocomposites are studied. The possibility ...
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Potassium polytitanates intercalated with nickel ions and their thermal transformations
The intercalation of nickel ions into the layered structure of ultradispersed amorphous potassium polytitanate powder on treatment with an aqueous solution of nickel sulfate was studied. The limiting nickel co...
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Use of a mechanically dispersed mixture SiO2 + Se as a colorant for obtaining tinted GLASS
A selenium-based colorant obtained by transferring it into micro- and nanostates by mechanical dispersion using the main component of the glass—quartz sand—as the stabilizing matrix is studied. It is determine...
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Metal nanoparticles in acrylic polymer matrices
Methods are developed for the synthesis of metal nanoparticles (by the example of silver) in the matrices of acrylic polymer, namely, poly(methyl methacrylate) (PMMA) and poly-(2-hydroxyethyl methacrylate) (PH...
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Nanodimensional layers based on polyamic acids and polyamidoimides as protective and passivate coatings in laser AlGaAs/GaAs heterostructures
A study of the application of polyamic acids (PAA) and polyamidoimides (PAI) in manufacturing passivate and protective coatings for the crystal front facet of a semiconductor laser was carried out. The morphol...
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Synthesis, structure, and properties of silver nanocomposite materials with poly(hydroxyethyl methacrylate) matrix
The mechanism of photoreduction of silver particles from colloidal solutions in 2-hydroxyethyl methacrylate, followed by its photopolymerization for preparing antirefl ection coatings, is considered.
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High-efficiency antireflection nanostructural optical coatings for solar cells
Potentialities of PMMA composite films with silver nanoclusters as highly effective nanostructural optical antireflection coatings of silicon solar cells are investigated in a wavelength range from 400 to 1100...
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Luminescence of polymer composite materials with cadmium sulfide nanoparticles
The structure and optical characteristics of CdS nanoparticles synthesized in low-density polyethylene were studied. The particles have a hexagonal structure of the greenockite type; the presence of the cubic ...
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Thermooptical properties of composites based on cadmium sulfide nanoparticles stabilized in a low-density polyethylene matrix
The thermooptical properties of composites based on a low-density polyethylene matrix containing stabilized cadmium sulfide nanoparticles have been studied. The optical absorption coefficient and refractive in...
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Thermal hysteresis in the dielectric properties of composites based on transition metal oxide and sulfide nanoparticles stabilized in a low-density polyethylene matrix
We have studied the temperature dependence of the complex dielectric permittivity of composites based on a low-density polyethylene matrix containing dispersed nanoparticles of zinc oxide and manganese oxide a...
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Thermodielectric properties of polymer composites based on CuO-covered Cu particles in high-pressure polyethylene
An artificial nanocomposite medium made by embedding copper nanoparticles covered by copper oxide in a high-pressure polyethylene matrix is studied. Pioneering experiments are reported aimed at finding the tem...
