anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units (B82B3)

B82   Nano-technology(3328)
B82B3                 anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units(1822)

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 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
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
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 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 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 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

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 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 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

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 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
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 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 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
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
Composition for imaging and damaging of target cells // 2611653
FIELD: pharmaceutics.SUBSTANCE: invention relates to pharmaceutical industry, namely to composition for imaging and damaging of tumor cells, containing inorganic nanoparticles with size of 10–100 nm and dimensional dispersity of up to 6% of NaYF4, co-alloyed with ions of ytterbium (Yb) and erbium (Er) or ytterbium (Yb) and thulium (Tm), and including cytotoxic component represented by beta-isotope, which is isotope yttrium-90 (90Y), nanoparticles are transferred into hydrophilic state by using coating of at least one of compounds selected from polymaleic anhydride of octadecene, polyethyleneimine, poly(D,L-lactide), poly(lactide-glycolide), silicon dioxide, tetramethylammonium hydroxide, wherein nanoparticles are linked with humanized mini-antibody scFv 4D5 or high affinity peptide of non-immunoglobulin nature DARPin-29, which are specific to cancer associated antigen HER-2/new.EFFECT: invention provides possibility of local directed therapeutic effect due to damaging action of beta-radiation simultaneously with possibility of optical visualization of pathological center with lower risk of poisoning of nearby tissues.1 cl, 6 dwg
ethod for surface modification of silicon oxide nanoparticles with included quantum dots // 2611541
FIELD: nanotechnology.SUBSTANCE: present invention relates to nanotechnology and can be used to produce stable aqueous solutions of semiconductor quantum dots coated with a silicon oxide shell, modified with the active group for bioconjugation and stabilized with polyoxyethylene. The method of surface modification of silicon oxide nanoparticles with included quantum dots is disclosed, according to which a microemulsionis prepared comprising a non-polar solvent and surfactant, the quantum dots and tetraethoxysilane are then added and stirred for 24 h, then 3-aminopropyltrimethoxysilane and 2-methoxy(polyethylenoxy) 6-9propyl trimethoxysilane are added and stirred for 24 hours, where hexane is used as a non-polar solvent , Brij L4 is used as the surfactant, wherein deionized water is added to the microemulsion at the following molar ratio of the components: a non-polar solvent: surfactant: deionized water - 9:1:3; the quantum dots are added in an amount of 0.5 nmol per 1 ml of a non-polar solvent, tetraethoxysilane is added in an amount of the order of 105 mol per 1 mol of quantum dots, 3-aminopropyltrimethoxysilane and 2-methoxy(polyethylenoxy)6-9propyl trimethoxysilane are added in an amount of 1/30 mol per 1 mol of tetraethoxysilane.EFFECT: invention is a method of modifying silicon oxide nanocomposites with quantum dots by sewing PEG and amino groups.5 ex
Production method of quantum dots, functionalized by dendrimers // 2611535
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnologies. At first, the solution of quantum dots is obtained, based on the cadmium selenide in chloroform with its concentration 410-8⋅ M and is mixed with the solution of dendrimer in methanol so, that the molecular ratio of quantum dots to dendrimer is from 1: 700 to 1: 1100. The polyamidoamine dendrimer with the surface amino groups is used as dendrimer, for example, polyamidoamine of the 4th or the 5th generation. The quantum dots based on CdSe may be coated with the film from the other semiconductors, wherein the outer layer is of ZnS. The resulted mixture is to be washed with ethyl acetate twice by centrifuging, the supernatant is selected and the residue is dissolved in the solvent. The recieved quantum dots, functionalized by dendrimers, are characterized by high stability in aqueous media, a quantum yield of above 40% and are suitable for the further banding with biomolecules.EFFECT: invention is a simple and economical way to produce quantum dots, functionalized by dendrimers.4 cl, 10 ex

Heat resistant hybrid composite material // 2611518
FIELD: chemistry.SUBSTANCE: heat resistant hybrid composite material contains silanol terminated linear polydimethylsiloxane and silicone dioxide nanoparticles modified by covalently attached thiacalixarenes.EFFECT: created a heat resistant material with a new combination of physical and chemical properties, improved effectiveness of heat resistant material production with the reduced labour intensity.3 dwg, 9 ex
ethod of producing single-layer carbon micro- and nanotubes // 2611509
FIELD: manufacturing technology.SUBSTANCE: invention can be used in electronic and chemical industry, medicine and optics. First a polyacrylonitrile is obtained by homopolymerisation of acrylonitrile or copolymerisation thereof with vinyl comonomers with content of comonomers not more than 20 % in copolymer. Comonomer used is at least one or more compounds, selected from: acrylic acid, methacrylic acid, itaconic acid, methyl acrylate, methyl methacrylate, butyl acrylate, vinyl acetate, styrene. Then solid polyacrylonitrile is heat treated in an oxidative medium at 180–300 °C and pyrolyzed in an inert atmosphere at 1,000–2,400 °C.EFFECT: higher quality and purity of single-layer carbon micro- and nanotubes, simplified method for preparing them by reducing number of steps.1 cl, 5 dwg, 1 tbl, 1 ex
Process for preparation of nanosized barium hexaferrite particles // 2611442
FIELD: chemistry.SUBSTANCE: method for barium hexaferrite nanoscale particles production includes mixing of a barium nitrate solution in distilled water with a ferric nitrate solution in glycerol and distilled water solution to achieve the atomic ratio Ba/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 barium hexaferrite nanoparticles size.3 ex

ethod of production of ecocide nanocapsules in sodium alginate // 2611369
FIELD: nanotechnology.SUBSTANCE: ecocide C is added portionwise is added to sodium alginate suspension in hexane and 0.01 g of E472s while stirring 1000 r/min and then methylene chloride is poured in, the obtained suspension is filtered and dried at room temperature. The mass ratio core:shell in nanocapsules is 1:3, 1:1, 1:5 or 5:1.EFFECT: nanocapsules of ecocide C manufacture process simplification and acceleration and weight yield increase.2 dwg, 5 ex

ethod of production of metronidazole nanocapsules in sodium alginate // 2611368
FIELD: nanotechnology.SUBSTANCE: metronidazole powder is added to sodium alginate suspension in hexane and 0.01 g of E472s then acetone is added, the obtained suspension is filtered and dried. The mass ratio core:shell in nanocapsules is 1:3, 1:1, 1:5 or 5:1.EFFECT: nanocapsules of metronidazole manufacture process simplification and acceleration and weight yield increase.1 dwg, 5 ex

ethod of producing of microcapsules of tetracycline antibiotics in sodium alginatemethod of producing of microcapsules of aminoglycoside antibiotics in sodium alginate // 2611367
FIELD: nanotechnology.SUBSTANCE: an antibiotic powder is added to sodium alginate suspension in petroleum ether and 0.01 g of E472s drug as a surface-active substance, then, 5 ml of carbon tetrachloride is added, the obtained suspension is filtered and dried. The mass ratio core:shell in nanocapsules is 1:3 or 1:1.EFFECT: nanocapsules of antibiotics manufacture process simplification and acceleration and weight yield increase.2 dwg, 11 ex
ethod of producing high-strength rolled product of austenite stainless steel with nanostructure // 2611252
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, particularly, to metal forming, specifically to production of high-strength rolled product of austenite stainless steel with a nanocrystalline structure, which can be used as structural material. Method of making rolled product comprises hot forging at 1,373 K to true straining ε=0.5 with subsequent cooling in water, obtained semi-products undergo warm rolling into a sheet to true straining ε=3 at 473–673 K, which prevents martensitic transformation.EFFECT: technical result consists in production of rolled product of austenite stainless steel with nanocrystalline structure and improved strength properties, yield strength is more than 1,000 MPa.1 cl, 2 dwg, 1 tbl

ethod of producing nanodispersed oxide materials in form of spherical aggregates // 2610762
FIELD: chemistry.SUBSTANCE: method of producing nanodispersed oxide materials in the form of spherical aggregates is described, comprising preparing of a solution which contains soluble salts comprising cations and metal anions, followed by immersion of organic matrix for trapping the metal ions from the solution, wherein a solid ion-exchange resin is used as the organic matrix, containing an acrylic-divinylbenzene or styrene-divinylbenzene matrix, preliminary soaked in distilled water, which is placed into the solution with constant stirring until complete sorption of metal ions, the resulting sample of metal oxide precursor is extracted from the solution and dried, afterwards, the polymeric organic matrix is removed by a stepped heat treatment.EFFECT: obtaining of simple or mixed metal oxides in nanodispersed state with narrow particle size distribution.4 cl, 10 dwg, 9 ex
Process for obtaining of composite material based on polymer matrices for microelectronics // 2610606
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing a composite material for microelectronics. The method comprises preparing a liquid polymer base by dissolving polymer in organic solvent, introducing of metal phtalocyanine into the obtained solution , mixing until formation of a homogeneous liquid mixture, introducing the micro- and nano-sized particles of an inorganic substance from semiconducting, metallic and magnetic materials into it, mixing until homogeneous mass is obtained and drying at 26-40°C to remove the solvent. Polystyrene, polyvinylidene fluoride, polymethyl methacrylate, polyvinyl chloride, poly-3-4-ethylenedioxythiophene with polystyrene sulphonic acid, poly (3,4-ethylenedioxythiophene) polystyrene sulfonate are used as polymer. Organic solvent is selected from tetrahydrofuran, toluene, benzene, ethyl alcohol.EFFECT: invention provides a composite material of a functional purpose having photovoltaic, luminescent, semiconducting and resistive properties.7 cl, 8 dwg, 5 ex
ethod of making magnetite nanoparticles (versions) // 2610506
FIELD: medicine.SUBSTANCE: invention can be used in medicine, photonics, electronics. Obtaining of magnetite nanoparticles Fe3O4 is performed by high-temperature reducing hydrolysis of iron (III) compounds in ethylene glycol medium in presence of precipitation agent and stabilizer. Precipitation agent is salt of lower carboxylic acids and alkali metals. Stabilizer is selected from group of polyelectrolites, polymers or surface-active substances. Stabilizer is substance, selected from: sodium dodecyl sulphate, cetyltrimethylammonium bromide, polyethylene glycol, polyacrylic acid. Initial solution is mixture containing water in amount of 0.6–8.0 Vol%, salt of lower carboxylic acid and alkali metal in amount according to molar ratio Fe3+/salt of carboxylic acid equal to 1/3–1/15, and stabilizer in amount according to molar ratio of stabilizer/Fe3+ equal to 1/5–1/10, the rest is ethylene glycol. Obtained reaction mixture is heated in atmospheric medium to 150–190 °C and kept at this temperature until complete deposition of magnetite.EFFECT: invention enables synthesis in single step, obtain spherical particles of magnetite with average diameter from 50 to 300 nm.2 cl, 1 dwg, 11 tbl, 11 ex

Helio-heat-and-cold supply system // 2610406
FIELD: power engineering.SUBSTANCE: invention relates to heat engineering and is intended to maintain comfortable air parameters in low-rise buildings, mainly at livestock farms. System of helio-heat-and-cold supply containing a Southern, made from an absorbing solar radiation material, and a Northern air ducts, herewith the Southern air duct is equipped with a convergent nozzle, which is installed outside the room and is made with a swirler consisting of four plates, and the outer surface of each of the four plates of the swirler is coated with a glass-like film in the form of a nanomaterial from tantalum oxide.EFFECT: this enables to eliminate sticking of drop moisture onto the outer surface of the swirler plates, which leads to oxidation and further destruction of the material.1 cl, 3 dwg
ethod of complex diagnosis of physical and chemical properties of nanostructured coatings based on single nanoparticles of metals and metal oxides // 2610383
FIELD: chemistry.SUBSTANCE: invention can be used for complex diagnosis of physical and chemical properties of nanostructured coatings based on single nanoparticles of metals and metal oxides. Essence of invention lies in that sample, which is a conducting or semiconductor substrate with coating applied on its surface based on single metal nanoparticles and metal oxides, is scanned by means of a metal tip of a scanning tunnel microscope and is analysed spectroscopically by measuring current-voltage curves of tunnel nanocontact in order to establish shape and sizes of nanoparticles, electronic structure of nanoparticles, degree of crystallinity of nanoparticles and nanoparticles of defects, then, without interruption of processes of scanning and measurement of volt-ampere relationships of tunnel nanocontact, dosed holding in gas medium of chemical reagent is performed in order to calculate adsorption adhesion coefficient and establish products and form of adsorption of chemical reagent on surface of nanoparticles, with subsequent removal of coating of reagent adsorbed on nanoparticles by heating sample, wherein during sample exposure in gas medium of chemical agent, time of scanning selected section of sample surface and pressure of reagent is selected so that their product is not more than 1×10-6 torr×s.EFFECT: technical outcome is possibility of simultaneous determination of a large number of different parameters of coating nanoparticles themselves and their physical and chemical properties.4 cl, 5 dwg, 1 tbl

ethod for preparation of suspension of metal nanoparticles for external and internal application // 2610171
FIELD: medicine, pharmaceutics.SUBSTANCE: invention relates to chemical-pharmaceutical industry, veterinary, agriculture and represents method for obtaining water-based suspension of copper nanoparticles for external application, characterised by the fact that ultrasonic dispersion of copper nanoparticles is realised for 30 min with frequency 35 Hz with water solution of catholyte with parameters: Eh=-300 mV, pH 7-8, stabilised with amino acid threonine in amount not less than 0.01 wt % at temperature not higher than 40°C.EFFECT: invention makes it possible to obtain in a stably biologically active suspension of preparation of copper nanoparticles, which does not produce toxic effect.3 cl, 2 dwg
ethod of composite material production on basis of polyolefins and carbon nanotubes // 2610071
FIELD: nanotechnology.SUBSTANCE: invention relates to the method of inserting carbon nanotubes into polyolefins to produce nanocomposites used in the production of various products from polymer composite materials. The method of composite material production on the basis of polyolefins and carbon nanotubes - CNTs with high content of CNT=5-20 wt % is carried out in sequence. At first a fine suspension of pretreated CNT is put into a polymerization reactor at room temperature. The pretreatment of CNT is the milling and sifting, warming and vacuum treatment at elevated temperature. Then the co-catalyst is inserted while stirring - the trialkylaluminum and the suspension of the finely supported titanium-magnesium catalyst. The reaction mixture is heated with stirring to 50-80°C, a comonomer or a mixture of comonomers is introduced in case of copolymerization up to the set pressure and the required amount of the polymer is brought at a constant temperature and pressure. The invention provides a homogeneous distribution of carbon nanotubes in the polyolefin matrix.EFFECT: obtaining a homogeneous distribution of carbon nanotubes in the polyolefin matrix.3 cl, 3 dwg, 4 ex

Solvent-based methods for production of graphene nanoribbons // 2609915
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry and nanotechnology. Plurality of carbon nanotubes is exposed to a source of alkali metal in presence of an aprotic solvent and in absence of protic solvent. Carbon nanotubes opened in a direction parallel to their longitudinal axes are obtained. To obtain non-functionalised graphene nanoribbons, opened carbon nanotubes are exposed to a protic solvent. To obtain functionalised graphene nanoribbons, opened carbon nanotubes are exposed to an electrophile. Obtained graphene nanoribbons have specific conductivity of 0.1–9,000 S/cm.EFFECT: invention can be used for production of composites and fibres for displays, deicing circuits, gas-permeable composites and screens.52 cl, 36 dwg, 6 ex, 1 tbl

ethod for producing nanocapsules containing biopag-d and brilliant green // 2609826
FIELD: chemistry.SUBSTANCE: brilliant green in the amount of 2.5 ml added to 2.5 g of biopag-D, the resulting mix is added to 2.5 g or 7.5 g of carboxymethyl cellulose suspension in petroleum ether and 0.05 g of surfactant E472; the resulting mix is stirred using a magnetic stirrer, the precipitated nanocapsules are filtered off, washed with petroleum ether and dried.EFFECT: accelerated and simplified process of pcoducing nanocapsules containing biopag-D and brilliant green, improved mass yield.1 dwg, 3 ex

ethod for producing nanocapsules of tettracycline antibiotics // 2609825
FIELD: chemistry.SUBSTANCE: invention relates to a method for producing nanocapsules. Disclosed a method for nanocapsules of tetracycline family antibiotics, such as tetracycline, doxycicline or minocycline. Carrageenan is used as nanocapsule shell material. According to the method antibiotic was added to the suspension of carrageenan in petroleum ether with E472c present, followed by benzene, and the resulting suspension of nanocapsules was filtered, washed and dried. The core : shell ratio in the nanocapsules was 1:1, or 1:3, or 1:5 or 5:1.EFFECT: quick and simple process of nanocapsule production, reduced process losses (increase of mass yield).3 dwg, 10 ex

ethod for obtaining nanocapsules of medications of penicillin goup in sodium alginate // 2609824
FIELD: medicine, pharmaceutics.SUBSTANCE: invention relates to method for obtaining nanocapsules of medications of penicillin group, selected from ampicillin, sodium salt of benzylpenicillin or amoxicillin. The claimed method is characterised by the fact that 0.01 g of preparation E472c is added to 0.5 g of sodium algenate in petroleum ether as surface active substance, 0.5 g of antibiotic powder is added to obtained suspension in small portions, with the following addition of 5 ml of chloroform, obtained suspension of nanocapsules is filtered and dried.EFFECT: invention ensures simplification and acceleration of process of obtaining nanocapsules of penicillin group medications, as well as increase of their output by weight.3 dwg, 7 ex
Production method for nanowire catalyst // 2609788
FIELD: nanotechnologies.SUBSTANCE: auxiliary layer, in which groove rows are formed of nanometer depth with vertical walls, is applied to a supporter; the layer of a catalyst material of nanometer thickness, on the top of which a photoresist mask with a pattern of narrow strips located aslant the grooves is formed, is applied; the layer of the catalyst material is removed by means of anisotropic etching up to the auxiliary layer retaining it on the side walls of the grooves and under the mask. The mask is removed. Supporters with nanowires are orderly allocated in a reactor.EFFECT: increasing of end product output, consumption reducing of expensive catalyst material, and reducing of gas-dynamic resistance of the reactor.4 cl, 1 dwg
 
2550995.
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