Nano-technology (B82)

B82            Nano-technology(3328)

Agent with antitumor activity based on arabinogalactan nanocomposites with selenium and methods for prepariation of such nanobiocomposites // 2614363
FIELD: pharmacy.SUBSTANCE: method of agent production includes interation of raw arabinogalactan and selenium dioxide or selenious acid salt in a solvent followed by precipitation in ethanol or acetone, or other organic solvent capable of mixing with water. The peculiarity of this method is that the process is carried out at the temperature of 20-25°C, stable selenium nanoparticles size is 0.5-250 nm, and raw arabinogalactan or arabinogalactan specially purified from phenolic impurities is used as the raw materila, while water or dimethylsulfoxide, or formamide are used as solvents.EFFECT: soluble stable nanocomposites providing antitumor activity, in dry form.3 cl, 7 dwg, 11 ex
Thermally conductive polymer composite material // 2614334
FIELD: physics.SUBSTANCE: invention relates to thermally conductive dielectric materials and can be used for manufacture of heat-removing gaskets, tapes, sealants, filling compounds for computer memory chips, power electronic products, portable devices, power supplies and power converters, for which it is necessary to provide heat removal from heat-loaded elements and assemblies. A thermally conducting polymer composite material comprising a matrix based on silicone rubber or epoxy material with a filler in an amount of 0.1-80% by total weight of the thermally conductive composite material, wherein the filler is made in the form of aluminum oxide particles, the dimension of which is expressed in nanometers and micrometers, in combination with alumina nanofibers in an amount of 0.1-50% by total weight of the thermally conductive composite material and in the form of alumina nanofibers only in an amount up to 80% of the total weight of thermally conductive composite material, at that, the nanofibers are randomly arranged in the polymer matrix or oriented along the direction of heat flow from the heat-loaded surface.EFFECT: invention provides thermally conducting composite material with high thermal conductivity.3 ex

ethod for producing thin nanodiamond film on glass substrate // 2614330
FIELD: chemistry.SUBSTANCE: thin nanodiamond film is obtained on a glass substrate by spraying the target material by a pulsed laser in a vacuum. The target is represented by detonation nanodiamond tablets, and the pulsed laser radiation source is represented by the laser with a wavelength of 1064 nm of a series of 13 to 20 pulses, with a pulse energy from 3.8 to 5.8 J and a duration from 1 to 1.5 ms. The process is accompanied by dispersing the detonation nanodiamond conglomerates up to individual nanocrystals and purification from impurities in the process of high-energy laser pulse impact. The resulting film is a two-dimensional polycrystalline nanodiamond aggregate.EFFECT: obtaining thin-film hardening coatings and creating nanostructured materials.9 dwg, 2 tbl, 5 ex
Heat resistant metal-ceramic coating and method of its application // 2614320
FIELD: machine building.SUBSTANCE: invention relates to machine building and can be used for production of parts with increased heat resistance. In heat-resistant metal-ceramic coating, consisting of metals high-melting oxides alternating layers separated with plastic metal compensation layers, high-melting oxides layers are additionally contain not more than 40 % of plastic metal, and compensating layers are additionally contain not more than 20 % of high-melting oxides. Each plastic metal compensating layer is made with thickness of not more than 100 nm and in 1.5–20 times less than ceramics layer thickness. As high-melting oxides layers hafnium oxide or zirconium oxide can be used, and compensating layers contain up to 50 % of rare-earth metals.EFFECT: alternating oxide and compensating layers are sprayed with smooth change of composition.4 cl
ethod for producing prussian blue/polypyrrole composite coatings with stable electro chromic transition // 2614290
FIELD: chemistry.SUBSTANCE: invention relates to methods for preparation of stable electrochromic coatings based on Prussian blue and a conductive polymer component. It can be used for production of electrochromic coatings on optically-transparent electrodes for architectural, building and automotive applications. Disclosed a method for production of Prussian blue- polypyrrole nanostructured composite coating with stable redox- and electrochromic transition on the surfaces of optically-transparent electrodes by a single-stage sedimentation in a mixed solution of ferrous nitrate (III) and hexacyanoferrate (III) as oxidising agents, and pyrrole monomer with a nitrate supporting electrolyte as a reducing agent with pH 1.0±0.2, within 48 hours.EFFECT: invention provides a simple single-stage method for production of Prussian blue- polypyrrole electrochromic nanostructured composite coatings on optically-transparent electrodes.2 cl, 4 ex
ethod for producing graphene film on substrate // 2614289
FIELD: chemistry.SUBSTANCE: substrate - a X-cut-off of piezoelectric crystal, e.g., La3Ga5.5Ta0.5O14, with planes (110) parallel to the crystal surface is placed into a quartz reactor. The reactor is pumped out to 10-3-10-8 Torr and heated up to 900-1450°C. The reactor then filled with carbon gases, e.g. acetylene, methane or ethylene, to achieve pressure of 10-10-1 Torr. After 15-100 min. the reactor is pumped out again to achieve pressure of 3·10-6 Torr while cooling it down to the room temperature.EFFECT: process simplification, temperature reduction, production of uniform high-quality graphene films.5 cl, 2 dwg, 3 ex
ethod for hybrid plasmon-luminescent markers production // 2614245
FIELD: chemistry.SUBSTANCE: method consists in formation of metal plasmon nanoparticles on the inorganic luminescent nanoparticles surface, where nanoparticles are previously doped by rare earth metal ions. Plasmon nanoparticles are prepared by reduction of liquid solutions. The colloidal solution of inorganic luminescent nanoparticles in 1.2-dichloroethane is mixed with a supramolecular complex solution [{Au10Ag12(C2Ph)20}Au3PPh2(C6H4)3PPh2)3][PF6]5 in 1,2-dichloroethane to obtain a liquid solution, the liquid solution is recovered by laser radiation with a wavelength corresponding to the absorption band of the supramolecular complex, a power density of from 0.1 to 1 mW/cm2at laser exposure time of 10-60 minutes.EFFECT: invention enables high chemical purity of markers and small number of processing steps.5 dwg, 3 ex
ethod of producing nanoporous material for sensitive elements of gas sensors and nanoporous material obtained using said method // 2614146
FIELD: chemistry.SUBSTANCE: invention relates to production of nanoporous materials based on silicon-aluminium aerogels and can be in making sensitive elements of measurement devices of gas sensors, used in power engineering, chemical industry, as well as analysis of expired air in medicine. Disclosed is a method of producing nanoporous material, which is a composite silicon-aluminium aerogel composition SiO2/Al2O3, using a sol-gel process, in which to produce aluminium oxide sol a product of reacting aluminium nanopowder and/or aluminium nitride composition with particle size from 50 to 500 nm with water is used, which is then peptized to obtain sol. Also disclosed is a corresponding nanoporous material.EFFECT: technical result is obtaining nanoporous material based on silicon-aluminium aerogel with required charge properties: zeta-potential from -20 to -26 mV, charge surface density from 10-3 to 10-2 C/m2, in pores of which it is possible to perform transformation (change) of spectra of molecules of gases, as well as producing an aerogel without use of supercritical drying during its synthesis. 9 cl, 4 dwg, 1 tbl, 5 ex
Application of anabaena sp. pcc 7120 strain for silver nanoparticles production // 2614118
FIELD: biotechnology.SUBSTANCE: during biological recovery of silver with nanoparticles production, incubation is performed under constant illumination of the Anabaena sp. PCC 7120 in nitrogen-free medium with silver nitrate.EFFECT: invention provides a solution of silver nanoparticles, wherein the nanoparticles exist in a free state.
ethod for boron nitride nanotubes production // 2614012
FIELD: chemistry.SUBSTANCE: method comprises preparation of a reaction mixture of a boron oxide compound and a catalyst, reaction mixture heat treatment in ammonia at a temperature of 950°C-1200°C for 1 hour, nanotubes selection from the reaction products, washing and drying, at that, the reaction mixture consists of a boron oxide compound and a catalyst taken in a proportion providing cation ratio in the range of B/Me=7.1, where Me=Li, Mg , Ca, Sr, lithium, magnesium, calcium, or strontium hydroxide or carbonate, are used a catalyst, and boric acid or ammonium borate is used as a boron oxide compound, the reaction mixture is applied as a 0.1 to 1 mm thick layer to a closed strip of mild steel or a thin mesh which is passed through the furnace with ammonia atmosphere.EFFECT: invention allows to obtain discrete cylindrical boron nitride nanotubes, 10-100 nm in diameter and 0,5-50 microns long, using cheap and low toxic reagents in a continuous manner.1 tbl, 1 ex
etal-polymer composition for manufacturing pim - products // 2614010
FIELD: metallurgy.SUBSTANCE: invention relates to powder metallurgy, in particular to metal-polymer compositions for manuracturing PIM-products by means of moulding and sintering said compositions. The composition is prepared by means of mechanical mixing the two mixtures; the components of the first one are finely divided powders of the alloying element and iron, and the components of the second one are an organic binder and a plasticizer - stearic acid, the composition comprising the titanium powder as an alloying element, and the mixture of paraffin and polypropylene as an organic binder. Wherein said two mixtures are mixed in the weight ratio of 65:35, the nanoscale part of the initial powders being 3.7 wt % and having the size distribution curve in the range of 30-70 nm.EFFECT: invention provides obtaining the composition having sedimentation resistance, as well as high fluidity, for the production of moulded articles of any degree of complexity.5 cl, 3 ex
ethod for producing nanoporous boron nitride // 2614007
FIELD: chemistry.SUBSTANCE: reaction mixture is prepared of boric acid and magnesium nitrate, taken in an amount providing the cation ratio B/Mg in the range of 5-20, by means of dissolving in distilled water, and then the reaction mixture is heat-treated in ammonia at the temperature from 800°C to 1200°C. The invention allows to obtain boron nitride with a high specific surface (up to 1600 m2/g) and the pore size in the range from 2 to 100 nm.EFFECT: improving the desired product properties.4 cl, 1 tbl, 8 ex
ethod for producing nanoceramics by method of combining self-propagating high-temperature synthesis and spark plasma sintering // 2614006
FIELD: chemistry.SUBSTANCE: method for producing the ceramic materials includes milling and high-energy mixing of the initial reactants in a high-energy planetary ball mill by milling balls in the argon atmosphere, and the subsequent simultaneous synthesis-sintering of the reaction mixture Si/C, or B/C, or Si/B/C. Milling and mixing are carried out at a weight ratio of the balls and the initial powders (20:1)-(40:1), with the ball mill rotating speed of 694-900 rev/min and the processing time of up to 15 minutes, and the process of combining the self-propagating high-temperature synthesis and the spark plasma sintering (SHS+SPS), i.e. the simultaneous synthesis-sintering of the reaction mixture is carried out at the spark plasma sintering plant; for this purpose, the reaction mixture is placed into a graphite cylindrical press-mould, fixed between the electrodes, which simultaneously act as press punches, put the press-mould into the chamber, vacuum or inert gas atmosphere is created in the chamber, and pulsed electric current of 1000-5000 A under the load up to 50-90 MPa is passed through the sample to be sintered. The process duration is 5-10 minutes.EFFECT: lower energy costs, excluding the application of various sintering activators, improving the physical and mechanical properties of the resulting material.4 ex, 2 dwg
ethod for producing coatings from boron nitride nanosheets // 2613996
FIELD: chemistry.SUBSTANCE: invention relates to the field of producing coatings containing ceramic two-dimensional structures, namely the hexagonal boron nitride nanosheets having a thickness of 1-10 nm and the characteristic linear dimension from 100 nm to 5 microns, which can be used as a carrier of catalysts, as well as for imparting hydrophobic properties to a surface. The essence of the invention consists in that the reaction mixture is prepared, consisting of boric acid and a catalyst represented by sodium, or potassium, or magnesium, or strontium nitrate taken in amounts providing the B/Me cations ratio in the range of 0.5-5, where Me=Na, or K, or Mg, or Sr; the reaction mixture is applied to the surface in the form of a layer with the thickness from 0.1 to 0.5 mm , and heat treatment in the ammonia atmosphere is performed at a temperature ranging from 900°C to 1100°C.EFFECT: obtaining uniform coatings of hexagonal boron nitride nanosheets on inner surfaces and on the surfaces of the articles of complex shape.4 cl, 1 tbl, 2 ex

Process of getting rosemary nanocapsules in sodium alginate // 2613883
FIELD: nanotechnology.SUBSTANCE: for shells of nanocapsules sodium alginate is used, and the rosemary powder is slowly added to a suspension of sodium alginate in petroleum ether in the presence of 0.01 g E472c as a surfactant, and then stirred at 1000 r/min and the ethyl acetate is poured, the resulting suspension is filtered and dried at room temperature, wherein the weight ratio of core: shell in nanocapsules is 1:1 or 1:3.EFFECT: simplification and acceleration of the process of producing the nanocapsules of rosemary, as well as increase their yield by weight.1 dwg, 3 ex
ethod for producing dry rosehip extract nanocapsules // 2613881
FIELD: nanotechnology.SUBSTANCE: method for producing nanocapsules of dried rosehip extract, wherein as the shell of the nanocapsules the Konjac Root Powder is used, dry rosehip extract is dispersed in a Konjac Root Powder butanol in the presence of 0.01 g E472s as surfactant while stirring 1300 rev/min, then 5 ml of chloroform, after which the precipitate was filtered off and dried at room temperature, wherein the ratio of dry rosehip extract to Konjac Root Powder is 1:1, 1:3 or 5:1.EFFECT: way to simplify and accelerate the process of producing the nanocapsules, to increase the yield by weight.4 ex

Plasmon pulse generator of terahertz frequencies // 2613808
FIELD: physics.SUBSTANCE: plasmon pulse generator of the terahertz frequency includes a spaser in the passive Q-switching mode based on the active medium placed in the resonant structure formed in a thin metal film, placed on the substrate, an active medium pumping means, an output means of the generated plasmon pulses. The resonant structure is a channel with a rounded bottom, in which the active medium is placed in the form of quantum dots. The active medium pumping means is in the form of the ultraviolet radiation source. Herewith one part of the quantum dots is open to the said radiation source, and the other part is shielded.EFFECT: providing the generation possibility of the optical plasmon pulses with the terahertz frequency and the subsequent integration possibility into the advanced plasmon circuits.10 cl, 10 dwg

ethod for production "ks" swine fever vaccine nanocapsules in sodium alginate // 2613795
FIELD: biotechnology.SUBSTANCE: method includes dilution of 55 mg of "KS" vaccine were dissolved in 3 ml of petroleum ether and dispersed into a sodium alginate suspension in petroleum ether containing 550 mg of this polymer in the presence of 60 mg of E472s preparation as surfactant while stirring at 1000 rpm, then 5 ml of ethyl acetate is added, the precipitate is filtered and dried at room temperature.EFFECT: simplification and acceleration of "KS" vaccine nanocapsules production process, increasing their output by weight.1 dwg, 1 tbl, 3 ex
Protective coating composition // 2613770
FIELD: chemistry.SUBSTANCE: invention relates to compositions for coatings, removed by one layer, namely for protection against from weathering, aging, biodegradation of polymer products, unpainted surfaces of wood, metal, painted decorative coatings of wood products and machinery during transportation, and can be used in all industries for preservation during storage in open areas. A composition for protective coating, containing oil ceresin with a specified dropping point, monosubstituted amides of synthetic fatty acids (SFA) fraction C17-C21 of monoethanolamine triborate and water, is described and further comprises nanoclays of the general chemical formula {Mg3[Si4O10][OH]2}•p{[Al,Fe***]2[Si4O10][OH]2}•nH2O at n:p ratio of 1.0-1.1, and oil ceresin - with a dropping point of 70°C at the following component ratio, wt %: oil ceresin with a dropping point of 70°C - 15.0-25.0, monosubstituted amides of SFA fraction C17-C21 of monoethanolamine triborate - 2.5-9.5, nanoclays of the general chemical formula {Mg3[Si4O10][OH]2}•p{[Al,Fe***]2[Si4O10][OH]2}•nH2O at n:p ratio of 1.0-1.1 - 1.0-2.0, water - the rest.EFFECT: increased efficiency of protective coating properties due to improved coating material adhesion to protective surfaces, biocidal properties for various types of moulds and barrier properties of the protective coating material.5 tbl

ethod for praparing nanocapsules of medicinal plants having sedative effect // 2613761
FIELD: pharmacology.SUBSTANCE: invention relates to chemical and pharmaceutical industry, and is a method for preparing nanocapsules of the medicinal plants having a sedative effect, characterized in that the tinctures of valerian, motherwort and anomalous peony are added to the suspension of sodium carboxymethyl cellulose in acetone in the presence of 0.01 g of E472s preparation as a surfactant, while stirring at 1300 rev/min, the prepared suspension is filtered and dried at room temperature, wherein the ratio of core: shell in case of preparing the motherwort tincture nanocapsules is 1:3, 1:1, 5:1 or 1:5, in the case of preparing the valerian tincture nanocapsules is 1:3, 1:1, 5:1, 1:5, in the case of preparing the anomalous peony tincture nanocapsules is 1:3, 1:5.EFFECT: invention allows to simplify and accelerate the method of preparing the nanocapsules and to increase the weight yield.3 dwg, 11 ex

ethod for production of gold-carbon nanostructured composite // 2613681
FIELD: chemistry.SUBSTANCE: invention refers to the technology for preparing nanostructured composites based on highly porous carbon matrices filled with gold nanoparticles. A method for production of gold-carbon nanostructured composite includes preparation of highly porous carbon matrix by treatment of carbon material with alkali solution, recovery of nano-sized gold particles in pores of the obtained matrix by impregnation of a weighed amount of matrix with aqueous solution of precursor HAuCl4 with subsequent heating, washing and drying. While preparing the carbon matrix, carbon material is treated with saturated alkali solution in weight ratio alkali : carbon material of (2.5÷4):1, the obtained highly porous carbon matrix is impregnated with the solution of precursor HAuCl4 with concentration of 4.1⋅10-3÷1.07⋅10-1 mol/l.EFFECT: invention allows to produce gold-carbon nanostructured composite with high specific surface and low gold content.3 dwg, 3 tbl
ethod for producing titanium dioxide // 2613509
FIELD: chemistry.SUBSTANCE: method for producing titanium dioxide comprises heating titanyl sulfate and ammonium while gradually raising the temperature and heat treatment at 600-700°C with forming the gaseous phase containing a sulphate and an ammonium compounds and the solid phase in the form of anatase titanium dioxide, to provide the sulfate compound content in the anatase titanium dioxide based on the sulfur trioxide SO3 in an amount of 1.5-3.0 wt % with respect to TiO2. The obtained anatase titanium dioxide is subjected to mechanical activation in a ball grinder with the drum rotation speed of 600-750 rev/min, at the ratio of the balls weight to the anatase weight of 1:10-18 within 0.5-1.5 hours. The activated product is afterwards calcined at a temperature of 800-900°C, with obtaining rutile titanium dioxide.EFFECT: obtaining nanosize titanium dioxide with the stable rutile structure and reduced content of volatile compounds.3 cl, 4 ex

ethod of producing gas sensor based on thermovoltaic effect in zinc oxide // 2613488
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology and can be used in making gas sensors. Disclosed is a method of making gas sensors, comprising a housing, a two-layer nanostructure of ZnO-ZnO:Cu installed therein on a base, point contacts connected to terminals of the housing placed in an insulator and a nozzle providing contact of detected gas with a sensitive element. Two-layer nanostructure of ZnO-ZnO:Cu, in which a thermovoltaic effect is observed, is synthesised via sol-gel technology from sol by dissolving an inorganic zinc salt in alcohol and adding a surfactant, followed by stirring with subsequent ageing of sol. Lower layer of nanostructure is formed from pure zinc oxide by immersing substrate at ⅔ length in sol and drying. Upper layer of zinc oxide is doped with copper, formed by two or three times dipping of other end of substrate at ⅔ length with subsequent drying and annealing.EFFECT: invention enables to make a gas sensor based on thermovoltaic effect in zinc oxide, which has high sensitivity to reducing gases.3 cl, 4 dwg
Composite welding wire for high-strength alloyed steel arc welding // 2613243
FIELD: metallurgy.SUBSTANCE: wire comprises a metal rod and anelectrolytically applied thereto nanocomposite coating incudling a metal matrix with distributed therein nanoparticles. The matrix contains nanoparticles of fluoride or fluoride mixture of rare-earth metal and nano-sized particles of a refractory metal boride in the following ratio of matrix volumes and nanoparticles in the coating, %: metal matrix 55-96, nanoarticles of fluoride or fluoride mixture of rare-earth metal 3-20, nanoparticles refractory metal boride 1-25. Rare-earth metal fluoride was selected from the group consisting of lanthanum fluoride, yttrium fluoride, and cerium fluoride. Titanium boride or zirconium boride is used as refractory metal boride.EFFECT: welding wire increases strength, ductility, and toughness of alloyed steel welds.3 cl, 6 tbl
ixture for heat-resistant aerocrete on bases of nanostructured gypsum binded composite, method of products manufacture // 2613209
FIELD: building.SUBSTANCE: invention is related to the industry of construction materials and can be used for thermal insulation and heat insulation structural materials in the manufacture of buildings and structures in industrial and civil construction. The mixture for heat-resistant aercrete includes nanostructured gypsum bound composite, a foaming agent and water, where the composite is used as a binder consisting of gypsum and fine ground silica-component - a highly concentrated suspension of silica-containing material with particle size less than 5 microns constituting 20-50% and 12-20% of humidity. As a foaming agent synthetic foaming agent is used in the following ratio: the said binder (dry basis) - 60.7-75.3%, gypsum plaster - 10-90%, silica-component - 90-10 %, the synthetic foaming agent - 0.4-0.6% and water - 24.1-38.7%.EFFECT: invention allows improving the basic technical and operational, and thermal characteristics: mechanical strength, porosity, density, thermal conductivity, heat resistance improvement.2 cl, 2 dwg, 5 tbl
ixture for heat-resistant aerocrete on basis of nanostructured gypsum binded composite, method of products manufacture // 2613208
FIELD: building.SUBSTANCE: invention is related to the industry of construction materials and can be used for thermal insulation and heat insulation structural materials in the manufacture of buildings and structures in industrial and civil construction. The mixture for heat-resistant aercrete includes nanostructured gypsum bound composite, a foaming agent and water, where the composite is used as a binder consisting of gypsum and fine ground silica-component - a highly concentrated suspension of silica-containing material with particle size less than 5 microns constituting 20-50% and 12-20% of humidity. As a foaming agent protein is used in the following ratio: the said binder (dry basis) - 60.7-75.3%, gypsum plaster - 10-90%, silica-component - 90-10 %, the foaming agent - 1.3-2.4 % and water - 22.5-36.9 %.EFFECT: invention can improve the basic technical and operational, and thermal characteristics: mechanical strength, porosity, density, thermal conductivity, heat resistance improvement.2 dwg, 5 tbl, 2 cl

Production method of metronidazole nanocapsules in konjac gum // 2613108
FIELD: nanotechnology.SUBSTANCE: metronidazole powder is added to konjac gum suspension in butanol and 0.01g of E472s, used as a surface-active substance, then 10 ml of carbon tetrachloride is added, the resulting suspension of nanocapsules is filtered and dried off, at that the weight ratio of core: shell in nanocapsules is 1:3, 1:1, 1:5 or 5:1.EFFECT: metronidazole nanocapsules production process simplification and acceleration, and also the weight yield increase.2 dwg, 5 ex
ethod of producing drug and drug preparation // 2613106
FIELD: medicine.SUBSTANCE: invention relates to medicine and pharmaceutical chemistry, particularly it concerns drug, based on nanoparticles of phthalocyanine, which can be used in treating malignant new growths by pulsed laser ablation of nanoparticles. Three-stage method of producing drug is described and thus produced preparation with following composition in wt%: phthalocyanine in form of nanoparticles 0.1–1.0; SAS 0.1–1.5; sodium chloride 0.1–1.5; water – rest.EFFECT: drug preparation, produced by this method, shows high efficacy, providing tumor growth inhibition (TGI) up to 100 %, as well as stability during storage – after 3 years storage size of phthalocyanine nanoparticles changed insignificantly.3 cl, 2 tbl, 7 ex
ethod of forming thin-film pattern on substrate // 2613054
FIELD: physics.SUBSTANCE: method of forming a thin-film pattern on a substrate using local laser irradiation of the previously deposited film according to the invention, the irradiation is conducted in the mode of the pulsed two-phase film destruction, then the substrate is subjected to uniform surface etching to the thickness not less than the film thickness on the unexposed areas of the substrate. A version of the method is also proposed, in which the irradiation is conducted with simultaneous exposure of two coherent laser beams, which form a periodic interference pattern on the surface, wherein the irradiation intensity provides a mode of the pulsed two-phase local film destruction.EFFECT: method of forming addressable one-dimensional thin-film nanostructures such as nanowires and periodic grids of the nanowires on the substrate surface.5 cl, 2 dwg
ethod of producing fibres from carbon nanotubes // 2612716
FIELD: chemistry.SUBSTANCE: invention relates to chemical engineering of fibre materials and a method of producing fibres from carbon nanotubes, which can be used for producing high-strength, high-modulus, electrically conducting composite materials of special purpose. Method of producing is carried out by exposing carbon nanotubes to a dispersion in a liquid medium, with subsequent removal of liquid medium. Medium used is a chlorine-containing organic solvent. Exposure involves mixing a dispersion of nanotubes with organosilicon liquid located between electrodes, wherein electric field intensity is 5–20 kV/cm, which is determined by formula E = U/d, where E is electric field intensity, kV/cm, U is voltage applied to electrodes, kV, d is distance between electrodes, cm.EFFECT: invention provides technological effectiveness of producing fibres from carbon nanotubes.1 cl, 5 ex
ethod for producing film luminophore based on acrylic polymer // 2612705
FIELD: chemistry.SUBSTANCE: acrylic base is mixed with the isostationate hardener at the ratio of 1:1, from 0.5 to 2 wt % titanium nanodioxide with a grain size up to 50 nm is added. The mixture is maintained within 3-3.5 hours with continuous stirring, luminophore is added in an amount providing the necessary colour coordinates, and stirred for another 30-40 minutes. The luminophore is represented by Y3Al5O12:Ce, Lu3Al5O12:Ce, Gd3Al5O12:Ce. The mixture is then poured onto a polypropylene pad of a desired shape and maintained in air to the polymerization state. The film is separated from the polypropylene base and finally dried in a drying cabinet at 110-120°C.EFFECT: method improvement.4 cl, 1 tbl, 10 dwg, 3 ex
Cold method for producing extra strength stone mastic asphalt concrete for repairing and setting up layers of road surface // 2612681
FIELD: transportation.SUBSTANCE: method involves preparing a mixture with use of mineral material in the form of rock rubble, sand residues of rock rubble, and mineral powder by means of mixing them with cement and bitumen emulsion, with the subsequent coating of the road surface with the mix and its packing. The mixing is done by successively introducing the following components to the cold mineral material, wt %: cement - 3.0-6.0, nanopolymeric water soluble additive with the particle size of 50-300 nm, a latex containing styrene-based copolymer with polar monomers or butadiene, acrylic or methacrylic acid as dry matter - 0.1-0.5, nonionic surfactants from theethoxylated higher fatty alcohols or alkylphenols class - 0.05-0.1, cationic bitumen emulsion as bitumen - 3.0-5.0.EFFECT: improved physical and mechanical properties of asphalt pavement and better eco-friendliness of the process.4 tbl, 7 ex

ethod of production of sodium hydrogen carbonate nanocapsules // 2612348
FIELD: nanotechnology.SUBSTANCE: sodium hydrogencarbonate is added to sodium alginate suspension in petroleum ether with the presence of E472c as a surface-active substance during agitation of 1,200 rpm, then, 5 ml of carbon tetrachloride is added, whereupon, the core:shell mass ratio is 1:1, 1:2, 1:3 or 1:5 on conversion to dry substance; the obtained suspension is filtered and dried at room temperature.EFFECT: nanocapsules manufacture process simplification, reduction of losses in the nanocapsules production, acceleration and weight yield increase.2 dwg, 5 ex

ethod of nanocapsules production of dorogov antiseptic-excitor (dae) fraction 2 in konjac gum // 2612347
FIELD: nanotechnology.SUBSTANCE: method of obtaining of Dorogov antiseptic stimulator nanocapsules fraction 2 in konjac gum is characterized in that the Dorogov antiseptic stimulator fraction 2 is dispersed into the konjac gum suspension in benzene in the presence of 0.01 g of E472c preparation as a surfactant while stirring 1300 r/min, then 5 ml of methylene chloride are added, the precipitate is filtered off and dried at room temperature, and the core:shell ratio is 1:1 or 1:3.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.3 ex, 2 dwg

ethod of producing nanocapsules of metal salts in agar-agar // 2612346
FIELD: nanotechnology.SUBSTANCE: method of metal salts nanocapsules obtaining in agar-agar is characterized in that the agar-agar is used by way of nanocapsule shell, and a metal salt in a weight ratio core: shell 1: 3 by way of the core, wherein the metal salt is added to agar-agar suspension in methanol containing 0.01 g of E472c preparation as a surfactant while stirring 1200 r/min, then 10 ml of hexane are flowed, the resulting suspension is filtered and dried at room temperature.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.9 dwg, 11 ex
ethod of growing the plants with using metal nanoparticles and substratum for its implementation // 2612319
FIELD: agriculture.SUBSTANCE: in the process of growing a plant by using nanoparticles germination and subsequent growth of plants under aseptic conditions on an agar medium containing the nanoparticles. The agar nutrient medium is used, which contains iron nanoparticles, zinc nanoparticles or copper nanoparticles, or a combination of iron, zinc, and copper nanoparticles. Agar nutrient medium contains necessary for plant development components included in the culture medium of Murashige-Skoog medium, namely organic substances, including vitamins, carbohydrates and amino acids and/or protein hydrolysates, as well as a chelating agent, inorganic salts containing nitrogen, phosphorus, sodium, potassium, calcium, magnesium, sulfur, chlorine, iodine, boron, manganese, molybdenum and cobalt as well as iron, zinc and copper. Thus iron or zinc, or copper, or iron, zinc, and copper in the combination belong to the culture medium in the form of metal nanoparticles.EFFECT: invention can improve seed germination, plant morphometric and physiological indicators.10 cl, 21 dwg, 1 tbl, 3 ex
ethod of titanium carbonitride nanopowder obtainment // 2612293
FIELD: metallurgy.SUBSTANCE: nitrogen plasma flow is generated, raw titanium-containing material and gaseous hydrocarbon are injected in the flow and mixed, steam and gas carbonitride-forming reaction mix of required composition is formed, carbonitride is condensed, force-cooled and separated from the flow. Titanium micropowder of +0.5-5 mkm size is used as titanium-containing powder material natural gas with methane content not less than 90.0 vol% is used as gaseous hydrocarbon, and they are injected together at the flow temperature not less than 5200 K, reaction products are cooled at 2800-2000 K, then passivated and coagulated by propenoic acid vapour added to the flow at molar ratio of titanium to propenoic acid 1:(0.025-0.075).EFFECT: improved quality and increased output of titanium carbonitride nanopowder, significant reduction of free pyrolytic carbon content, powder nanoparticle protection against sirface oxidation, increased efficiency of powder entrapment in filter.1 tbl, 7 ex
ethod for strontium hexaferrite nanoparticles preparation // 2612289
FIELD: chemistry.SUBSTANCE: method for strontium hexaferrite nanoscale particles production includes mixing of a strontium nitrate solution in distilled water with a ferric nitrate solution in glycerol and distilled water solution to achieve the atomic ratio Sr/Fe=1:10, continuous heating and stirring at 50°C for one hour, addition of ammonia and polyethylene glycol in a ratio of 5:1, stirring of the resulting mixture at 80°C for 8 hours and centrifuging at a speed of 11000 rpm, calcination at 450°C for 1.5 hours, and sintering at 1000-1100 °C, all heating and stirring processes are conducted under the influence of continuous ultrasonic irradiation with frequency of 10-25 kHz.EFFECT: increased homogeneity of strontium hexaferrite nanoparticles size.3 ex

Composite reinforcement // 2612284
FIELD: construction.SUBSTANCE: invention relates to construction, namely non-metallic composite reinforcement, which is used for reinforcing thermally insulated wall structures, monolithic concrete and prefabricated structures, for use in structural elements of buildings in the form of individual bars for reinforcing the foundation bed of buildings and structures, including foundations for highways and roads, and for anchoring retaining walls and structures in the ground. The invention comprises a support rod of glass or basalt roving and high modulus fibers impregnated with a binder. The binder is a composition of epoxy-diane resin, polyethylene amine hardener, dibutyl phthalate plasticizer and carbon nanocomposite additive in the amount of up to 1% by volume of the binder resin. The additive contains multi-layer carbon nanotubes in the quantity of no less than 45-50% by weight of carbon nanocomposite additions; it is made of brown sphagnum in conditions of mechanic activation of its pyrolysis products for at least 8 hours of treatment.EFFECT: invention allows to obtain reinforcement with high elastic modulus with reduced amounts of high-modulus fibers being used, which allows to meet the requirements of reinforced products in terms of their degree of deformation.2 dwg
ethod for production of aromatic polyimide nanofiber based material // 2612280
FIELD: chemistry.SUBSTANCE: method is described for production of a polyimide nanofiber based material including electrospinning of polyamide acid solution in the solvent in which the solution containing not more than 12 wt % of polyamide acid in aprotonic solvent is used to obtain the film by the method of electrospinning through split draw die to the support; the film is removed from the support and dissolved, in the quantity ensuring polyamide acid content in the solution of 12-20 wt %, in the mixture aptoronic solvent : benzoid solvent with benzoid solvent content being 20-70 vol.%; the solution is supplied at room temperature through electrode- draw die to electric field with voltage of 15-35 kV; the material deposited on the anode is subjected to thermal treatment at a temperature of 370-420°C for 60 min; the target product consists of aromatic polyimide nanofibers with diameter of 50-700 nm and has decomposition temperature higher than 500°C in the inert medium in mixture.EFFECT: production of aromatic polyimide nanofiber based material using the method of electrospinning of polyamide acid at room temperature.6 dwg, 5 ex

ethod of producing hybrid material based on multi-walled carbon nanotubes with titanium carbide coating // 2612247
FIELD: nanotechnology.SUBSTANCE: hybrid nanocomposite materials are composed of multi-walled carbon nanotubes and are sedimented on them using the method of chemical vapour deposition of an organometallic compound of titanium coatings of titanium carbide, and can be used in the electron emitters of flat-panel displays and in other automotive vacuum emission devices. A process of getting a nanocomposite hybrid material based on multi-walled carbon nanotubes with a titanium carbide coating, comprises placing a multi-walled carbon nanotubes in the reactor, creating a pre-vacuum reactor, heating multi-wall carbon nanotubes to a predetermined temperature, the supply of the organometallic titanium compound to the surface of the multiwalled carbon nanotubes, the pyrolysis of the organometallic titanium compound on the surface of multi-walled carbon nanotubes with titanium carbide coating deposition and removal of volatile organometallic compounds of titanium products of pyrolysis. As a starting compound, an organometallic titanium bis (cyclopentadienyl) titanium dichloride is used, and its pyrolysis is carried on the surface of multi-walled carbon nanotubes at a temperature below 850°C and not higher than 900°C.EFFECT: technology simplification of titanium carbide coatings on the surface of multi-walled carbon nanotubes by using a titanium-containing organometallic precursor.5 dwg, 6 ex
ethod of producing ceramic piezomaterials from nano- or ultradisperse powdered oxygen-octahedral type phases // 2612174
FIELD: chemistry.SUBSTANCE: invention relates to method of producing ceramic piezomaterials from nano- and ultradisperse powdered oxygen-octahedral type phases containing titanium ions (IV), niobium (V), zirconium (IV), tungsten (VI), zinc (II), nickel (II) and iron (III), cobalt (III) and other p- or d-elements in (B) position. The method of producing ceramic piezomaterials from nano- and / or ultradisperse powdered oxygen-octahedral type phases is characterized by the fact that the nano- and / or ultradisperse powdered oxygen-octahedral type phases are treated with alcoholic or aqueous-alcoholic solution of 1-8 wt % ammonium glycolate (NH4HC2O3) or ammonium formate (NH4COOH), or their mixtures before molding and sintering operation, afterwards the liquid phase is removed and the resulting powder is dried. Press-half-finished product made from the thus treated powder is being sintered for 1.5-3 hours at a temperature from 900 to 1250°C.EFFECT: invention increases the relative permittivity and piezoelectric modules while maintaining electromechanical coupling coefficients of piezomaterials.6 cl, 30 ex, 2 tbl
ethod of determining content of bacteria using modified magnetic nanoparticles as tags // 2612143
FIELD: biotechnology.SUBSTANCE: invention relates to biotechnology, namely to electrochemical immunoassay. Method of determination of gram-negative bacteria in analyzed medium is disclosed. In aqueous medium at temperature of 37 °C bacteria are conjugated with magnetic nanoparticles Fe3O4, Fe0, NiFe2O4 or MgFe2O4, modified with dextran. Non-binding nanoparticles are separated using magnetic field. Working electrode made of gold, platinum or graphite-containing materials is placed into working medium, surface of which is modified with antibodies specific to defined strain of bacteria, for immune complex formation on electrode surface during 20 minutes at temperature of 37 °C. Electrode is washed with buffer solution containing normal horse serum and tween-20. Working electrode extracted from analyzed medium is placed in electrochemical cell containing background electrolyte. Content of bacteria is determined by value of electrochemical oxidation response of nanoparticles localized in immunocomplex on surface of working electrode.EFFECT: invention increases sensitivity and accuracy of analysis, lowers detection limit for bacterial cells to 10 CFU/ml, reduces time of analysis.1 cl, 7 dwg, 5 ex
ethod of producing copper galvanic coatings modified with nanoparticles of electro-erosion copper // 2612119
FIELD: technological processes.SUBSTANCE: invention relates to electroplating and can be used for modification of copper galvanic coatings. Method involves introduction in sulphate of copper plating electrolyte of copper nanoparticles obtained by dispersion of copper wastes with size of 2.5–100 nm with concentration up to 0.1 g per 100 ml of electrolyte.EFFECT: improved physical and mechanical characteristics of copper coating.1 cl, 3 tbl, 6 dwg, 1 ex

ethod for producing aluminium nanopowders // 2612117
FIELD: nanotechnology.SUBSTANCE: invention relates to obtaining aluminum nanopowder from aluminium electrical wire waste and contains at least 99.5% of aluminium. Lead waste spark erosion dispersion in distilled water at a pulse repetition frequency of 95 - 105 Hz, the voltage across the electrodes 90 - 10 and 65 mcF capacitors, followed by centrifugation to separate the solution of large-sized particles from the nanopowder.EFFECT: method of producing aluminium nanopowder, which provides reduced energy costs and improves the ecological purity of the process.6 dwg, 2 ex

ethod of producing nanocapsules of metal salts in agar-agar // 2612025
FIELD: nanotechnology.SUBSTANCE: method is characterized in that 100 mg of metal salt (potassium iodide, magnesium, zinc or calcium carbonate, calcium chloride) is dispersed into a suspension of 100 or 300 mg of agar-agar in benzene in the presence of 0.01 g of E472s preparation as a surface-active agent while stirring at 1200 rev/min, followed by pouring of 5 ml chloroform. The molar ratio of core: sheath ratio is 1:1 or 1:3, then the resulting suspension is filtered and dried at room temperature.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.11 ex, 3 dwg
Silver nanocomposite based on arabinogalactan conjugate and flavonoids with antimicrobial and antitumor action and preparation method thereof // 2611999
FIELD: medicine.SUBSTANCE: invention is zero valent silver nanocomposite with both antimicrobial and antitumor action in the form of stable water-soluble powder that preserves its properties over a long time, containing natural arabinogalactan bioconjugate with flavonoids, with silver nanoparticles size of 1.7-90.0 nm and their content in the composite equal to 1.3-17.5%, as nanoparticle stabilizer. The invention also relates to a method for preparation of zero-valent silver nanocomposite.EFFECT: preparation simplicity, preservation of the natural structure of arabinogalactan, application of neutral pH and room temperature during preparation, nanocomposite stability, simultaneous antimicrobial and antitumor action.2 cl, 6 ex, 2 tbl, 1 dwg
ethod of producing films and plates from titanium oxide iv tio2 - rutile // 2611866
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnologies and nanostructures, namely, to methods of producing a rutile layer in the form of a film or a plate. Method involves a process taking place in an oxidative gas medium, wherein the titanium surface is heated by means of a resistive, inductive or radiative exposure up to the temperature lower than the melting point close to the phase transition point of 800–900 °C in the oxidative gas medium containing oxygen and an inert gas or a mixture of inert gases at a pressure exceeding 100 Pa, herewith oxidation of the titanium near-surface layers takes place with simultaneous recombination into a structure corresponding to TiO2 – rutile.EFFECT: technical result is eliminating technical difficulties of producing rutile, simplification of the technology of extracting the end product, as well as eliminating contamination of the end product.1 cl, 4 ex
ethod for young's modulus determination for micro- and nanoparticle material // 2611698
FIELD: physics, measurement equipment.SUBSTANCE: invention refers to methods for material mechanical properties determination by indentation into the sample surface to a predetermined load, namely to methods for static Young's modulus (hereinafter - modulus of elasticity) determination. Essence: experimental indentation and computer modeling of indentation by the finite elements method are combined, the elasticity modulus of the particle corresponding to a zero difference in the calculated and experimental indenter penetration depth is determined, the modulus of elasticity of the same particles is determined by the Oliver-Pharr method. The elasticity modulus value, obtained by calculation by the Oliver-Pharr method is compared to the value obtained from the stage of numerical studies, the arithmetic mean of the elasticicity modulus of the investigated particle is determined.EFFECT: invention enables elasticicity modulus determination for micro- and nanoparticles material of any shape.2 dwg
ethod of producing nanoheterostructure with superlattice // 2611692
FIELD: nanotechnology.SUBSTANCE: invention relates to electronic engineering, in particular, to methods of creating nanoheterostructures for phototransforming and light-emitting devices. The method of nanoheterostructures with superlattice manufacturing includes growing at GaSb substrate by vapor phase epitaxy from organometallic compounds in the superlattice hydrogen stream, consisting of alternating layers of GaSb and InAs. The superlattice includes at least one layer of the GaSb, growing from triethylgallium and trimethylantimony, and at least one layer of InAs, growing from trimethylindium and arsenic hydride. When growing the GaSb layer, at first supply triethylgallium and then trimethylantimony, when growing InAs layer at first supply arsenic hydride, and then trimethylindium. After growing of each layer GaSb or InAs, stop the supply of mentioned compounds to the layers growth area and continue to apply hydrogen for a period of time t, given by a certain ratio. In this way of nanoheterostructures with superlattice production there is no film of variable composition at the heteroboundary between the superlattice layers.EFFECT: invention provides stability and reproducibility of the electro-optical properties, created on the basis of nanoheterostructures of phototransforming and light-emitting devices.3 ex
 
2551185.
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