374 results about "Applications of nanotechnology" patented technology

Size-confined nanocomposite powders and methods for their manufacture are provided by coating fine powders with a nanoscale powder of a different composition. The nanocomposite plastics disclosed offer performance characteristics approaching those of metals and alloys. The nanocomposite powders are alternatively used for dispersion strengthening of metals, alloys, and ceramics. Novel materials based nanotechnology for energy devices and programmable drug delivery are disclosed.

Described is a radiation dosimeter including multiple sensor devices (including one or more passive integrating electronic radiation sensor, a MEMS accelerometers, a wireless transmitters and, optionally, a GPS, a thermistor, or other chemical, biological or EMF sensors) and a computer program for the simultaneous detection and wireless transmission of ionizing radiation, motion and global position for use in occupational and environmental dosimetry. The described dosimeter utilizes new processes and algorithms to create a self-contained, passive, integrating dosimeter. Furthermore, disclosed embodiments provide the use of MEMS and nanotechnology manufacturing techniques to encapsulate individual ionizing radiation sensor elements within a radiation attenuating material that provides a “filtration bubble” around the sensor element, the use of multiple attenuating materials (filters) around multiple sensor elements, and the use of a software algorithm to discriminate between different types of ionizing radiation and different radiation energy.

Device nanotechnology based on silicon wafers and other substrates is described. Methods for preparing such devices are discussed. The teachings allow integration of current semiconductor device, sensor device and other device fabrication methods with nanotechnology. Integration of nanotubes and nanowires to wafers is discussed. Sensors, electronics, biomedical and other devices are presented.

Nanoparticles comprising zinc, methods of manufacturing nanoparticles comprising zinc, and applications of nanoparticles comprising zinc, such as electrically conducting formulations, reagents for fine chemical synthesis, pigments and catalysts are provided.

A physical neural network is disclosed, which comprises a liquid state machine. The physical neural network is configured from molecular connections located within a dielectric solvent between pre-synaptic and post-synaptic electrodes thereof, such that the molecular connections are strengthened or weakened according to an application of an electric field or a frequency thereof to provide physical neural network connections thereof. A supervised learning mechanism is associated with the liquid state machine, whereby connections strengths of the molecular connections are determined by pre-synaptic and post-synaptic activity respectively associated with the pre-synaptic and post-synaptic electrodes, wherein the liquid state machine comprises a dynamic fading memory mechanism.

The invention relates to novel polymer-based microstructures, with outstanding shape accuracy and cost-effective processing. The novel polymers are based on hyperbranched macromolecules and enable remarkable property combination such as reduced shrinkage and associated low stress, high shape fidelity and high aspect ratio in patterned microstructures, with additional benefit of fast and low-cost production methods. The invention also relates to methods to produce these microstructures. The polymer-based microstructures are relevant for, but not limited to micro- and nano- technologies applications, including lab-on-a-chip devices, opto-electronic and micro- electromechanical devices, optical detection methods, in fields of use as diverse as automotive, aerospace, information technologies, medical and biotechnologies, and energy systems.

The invention provides a preparation method for a super-hydrophobic material. The method comprises the following steps: (1) modifying the integral three-dimensional structure of a substrate material by using a nanomaterial with a nanotechnology, so that the roughness of the integral three-dimensional structure of the material is increased; (2) coating the material with a low-surface-energy substance through a surface modifying technology to obtain the super-hydrophobic material. The static contact angle between the super-hydrophobic material and water is 152-158 degrees. The prepared super-hydrophobic material has superior hydrophobicity, the preparation process is simple, the reaction conditions are mild, and special machining equipment is not needed.

Methods for manufacturing nanomaterial dispersions, such as nanomaterial concentrates, and related nanotechnology are provided. The nanomaterial concentrates provided can be more cheaply stored and transported compared to non-concentrate nanomaterial forms.

A method and system for evaluating status and response of a mineral-producing field (e.g., oil and/or gas) by monitoring selected chemical and physical properties in or adjacent to a wellsite headspace. Nanotechnology sensors and other sensors are provided for one or more underground (fluid) mineral-producing wellsites to determine presence/absence of each of two or more target molecules in the fluid, relative humidity, temperature and/or fluid pressure adjacent to the wellsite and flow direction and flow velocity for the fluid. A nanosensor measures an electrical parameter value and estimates a corresponding environmental parameter value, such as water content or hydrocarbon content. The system is small enough to be located down-hole in each mineral-producing horizon for the wellsite.

The invention discloses the application of nanotechnology to the preparation of veterinary medicaments and also discloses a preparation method of veterinary nanometer suspension. The nanometer suspension prepared by the method has high stability and small irritation to animals. Compared with the common suspension or injection, the suspension prepared by the method uses less organic solvent, has a lower preparation cost, and can be used for preparing medicaments wildly used in the veterinary clinic.

The invention provides a nano-material associated clean fracturing fluid system; the system comprises a nano-material, a clean fracturing fluid and a dispersing auxiliary liquid trihydric alcohol. The nano-material associated clean fracturing fluid system can be applied to oil and gas fields with the temperature as high as 130 DEG C above, and can still maintain a certain viscosity at the temperature. The obviously improved temperature tolerance of the prepared nano-material associated clean fracturing fluid system is beneficial to the application of the system in high temperature deep-well oil fields. Through use of the system, nanotechnology and petroleum industry are closely combined, and the market prospect is broad.

The invention discloses a nanometer composite hydrophobic hard transparent film and a preparation method thereof, belonging to the nanometer technical field. The preparation method of the nanometer composite hydrophobic hard transparent film comprises the preparation of silicon dioxide sol, the preparation of aluminium sol, the preparation of composite sol, film-plating and other steps. The hardness of the finally obtained nanometer composite hydrophobic hard transparent film of the invention can reach 5h which is detected by a QHQ type pencil hardness gauge and SL100 type static contact angle admeasuring apparatus, and the hydrophobic angle can reach 115 degrees so that the nanometer composite film has excellent mechanical properties and hydrophobic function. The obtained nanometer composite hydrophobic hard transparent film in the invention can be used on the surface of different devices so as to prevent or reduce the adhesion of steam, ice and snow and other pollutants and has broad application prospect in national defense, aviation, aerospace, everyday life and other industrial fields.

The invention belongs to the technical field of nano, in particular to an original ecology separation and redispersion method of a nano metallic colloid. By taking spherical nano silver as an example, the method comprises the following steps: stirring and reacting silver salts under the existence of an organic protective agent and a reducing agent to obtain a nano silver colloid; adjusting the pH value of the nano silver colloid with acid, and continuously stirring and reacting until the colloid solution gradually appears flocks to obtain nano silver particles; and dispersing the nano silver particles in an organic solvent, and dispersing by ultrasonic to obtain the nano silver colloid dispersed in an original ecology mode. The invention can realize original ecology separation and redispersion repeatedly based on the interactive relationship among a dispersing agent, nano particles and the solution. The invention has the advantages of simple process, mild operation condition, short reaction time, little changes in particle size and appearance after repeated separation and dispersion, low preparation cost and no generation of harmful waste, and conforms to the requirement of green production.

The invention discloses a water dispersing carbon nanometer pipe and making method of modified conductive polyaniline derivant surface, which is characterized by the following: dissolving the water-soluble phenylamine derivant monomer into inorganic acid solution; adding carbon nanometer pipe to be dispersed evenly through ultrasound; oxidizing and polymerizing to coat the water-soluble conductive phenylamine derivant on the carbon nanometer pipe surface evenly acted by oxidizer through original position chemistry; obtaining the product with simple and feasible method, strong controllability as well as good water dispersion and superior conductivity; fitting for making high-strength, antistatic and microwave-adsorbing material as mass transmitting and transferring carrier for special functional nanometer element and different systems; displaying wide applying prospect in the material science, nanometer technique and life science.

The invention relates to a nanotechnology-based trace protein detection method, which combines enzyme-linked immunosorbent assay technology, tyramine signal amplification technology and the aggregation phenomenon of gold nanoparticles modified by different biological molecules, so an experimental method used for detecting trace proteins such as prostate specific antigen (PSA) and the like is established. The method comprises the following steps of: fixing an antibody aiming at the protein to be detected (such as the PSA) on the surface of a substrate; incubating another antibody with horseradish peroxidase (HRP) activity of the protein to be detected (such as the PSA) after capturing the protein to be detected in a sample, wherein the HRP catalyzes biotin-tyramide to generate biotin deposition under certain conditions; further amplifying a signal by using the aggregation phenomenon of the gold nanoparticles modified by biotin-labeled DNA and the gold nanoparticles modified by streptavidin; performing silver staining; and performing data analysis on an experimental result by using software. The method has the advantages of extremely low detection limit, wider detection range, capacity of detecting the antigen in a rabbit serum with complex compositions, and important application prospect.

A surface acoustic wave based CO₂ sensor using carbon nanotubes as the sensitive layer fabricated by combining surface acoustic wave (SAW) devices and nanotechnology. The device structure consists of the gas sensitive material between the input and output interdigital transducers (IDTs) of a SAW device. The CO₂ gas gets adsorbed on nanotubes when the carbon nanotube based SAW sensor is exposed to CO₂ at room temperature and/or at elevated temperature, which in turn changes conductivity of the carbon nanotube. This conductivity change will affect the velocity of the SAW traveling across the nanotubes and will give a frequency change which corresponds to the percentage of the CO₂ molecules adsorbed by the nanotubes.

A silica-based nanoformulation and method is used to treat citrus canker, inhibit the growth of mold and mildew, and add nutrients to soil used for agricultural purposes. The nanotechnology-enabled copper-loaded, silica nanoformulation (CuSiNP/NG) design is a “revolutionary re-invention” of Cu for safe application because it provides a formulation with maximum abundance of ionic Cu, provides sustained and optimal Cu ion release for long-term disease protection, better adherence to plant surfaces and structural surfaces due to gel-based nanostructure of CuSiNG, thus avoiding multiple spray applications and reducing the amount of Cu used in comparison to existing Cu compounds without compromising antibacterial activity. Thus, the silica-based nanoformulation releases copper in non-toxic quantities to the environment and the silica matrix provides an environmentally safe host material with a flexible design that is optimized to provide specific antifungal and antibacterial remediation using infrequent applications.

An apparatus and method for measuring optically the position or angle of a variety of objects or arrays of objects, including cantilevers in scanning probe microscopy, micromechanical biological and chemical sensors and the sample or a probe in surface profilometry. The invention involves the use of one or more diffractive optical elements, including diffraction gratings and holograms, combined with conventional optical elements, to form a plurality of light beams, each with a selectable shape and intensity, from a single light source, reflect the beams off mechanical objects and process the reflected beams, all to the end of measuring the position of such objects with a high degree of precision. The invention may also be used to effect mechanical changes in such objects. Devices with these improvements have numerous applications, including molecular force measurements, atomic force microscopy and manipulation technology, lithographic manufacturing, nanometer scale surface profiling and other aspects of nanotechnology.

The present invention discloses a nano silver biological bionic dressing and its preparation method. Said invention utilizes nano technology and self-assembling technology to assemble nano silver particle layer on the chitosan film. Its preparation includes the following steps: (1) preparation of nano silver particles: preparing silver nitrate (Ag NO3) solution, placing said solution in a container, stirring, heating and boiling, then drop-adding sodium citrate (Na3 C6 H5 O7 2H2O) solution, reacting for a certain time, then naturally cooling; (2) preparation of chitosan film: using acetic acid solution to dissolve chitosan, suction-filtering, pouring the suction-filtered solution into culture dish, drying to form film, using sodium hydroxide (No OH) to make treatment, finally using running water to rinse the film; and (3) preparation of nano silver biological bionic dressing: soaking the chitosan film in the nano silver particle solution, utilizing self-assembling technique to make nano silver particles be assembled on the chitosan film so as to obtain the invented product.

The invention belongs to the field of nano technology and particularly relates to a method for preparing nano silver conductive ink. The method comprises the following steps: dissolving a silver salt and an organic protective agent in a solvent, adjusting the pH value of the solution to 9 to 10 with an alkaline complexing agent, and raising the temperature gradually to 30 to 100 DEG C till the reaction system is a transparent solution; and cooling the reaction system obtained by the previous step to room temperature, adding a reducer into the reaction system, and continuously stirring the reaction system for 20 to 30 minutes to obtain the nano silver conductive ink. The molar ratio of the organic protective agent to the silver salt is 0.01-3:1; each 0.01 mol of silver salt is dissolved in 5 to 50 milliliters of solvent; and the molar ratio of the reducer to the silver salt is 1-3:1. The nano silver prepared by the method has the advantages that: the particle size is less than 10 nanometers; the process is simple, the reaction conditions are mild and the reaction time is short; the raw materials are simple and the dose of the dispersant is small; the purity and concentration are high; and the conductive property is good. In addition, the preparation cost of the nano silver ink is low; no harmful waste is produced, so the requirements for 'green production' are met; and the nano silver ink can be widely used in fields of touch screens, electronic tags, thin film switches, flexible circuit boards, medical products, sensors, printing contact, radio frequency interference screening, electrolysis, multilayer circuit board hole filling and the like.

Systems and methods for the ex vivo diagnostic analysis of samples of bodily fluids, including exhaled breath and blood. The present invention uses nanostructure-based assemblies in combination with sensor technology to provide an efficient and accurate means for identifying the presence of a target analyte/biomarker in a sample of bodily fluid. In a preferred embodiment, the nanostructure-based assemblies of the present invention include detecting means such as RNA oligonucleotide chains or “aptamers” and releasable surrogate markers such as DMSO.

The invention relates to a process for producing high concentration plastic nanometer flame-proof agglomerates, which comprises carrying out powdery combustion inhibitor surface modification, high speed kneading, mixing homogeneously, activation processing. According to the disclosed process, nanometer magnesium hydroxide is employed to charge silicane coupling agent A-174%, surface active dispersing agent KO-311 are charged into anhydrous alcohol for homogeneous dilution, finally spraying into homogenizer using high pressure mist.

The invention discloses a method for preparing water-soluble cadmium telluride (CdTe) quantum dots, and belongs to the field of nano-technology preparation. In the method, sodium tellurite serves as a tellurium source; cadmium chloride serves as a cadmium source; mercaptopropionic acid serves as a coordination agent; sodium hexametaphosphate serves as an auxiliary stabilizing agent; and the water-soluble CdTe quantum dots are prepared by only one step of reducing the sodium tellurite by using hydrazine hydrate in an aqueous phase system. The method has the characteristics of simple and practical operation, mild condition and low toxicity; and quantum dots with different sizes and emission wavelengths can be obtained by a method for controlling a reaction time.