12 results about "Nanotechnology Techniques" patented technology

Provided is a sacrificial composition. The sacrificial composition comprises a polymer (A) that undergoes acid-catalyzed decomposition, a compound (B) that generates an acid by heat, and a solvent (C), wherein the compound (B) that generates the acid by heat consists of a carboxylic acid and a base, and a content of the compound (B) is 1 to 60 parts by mass based on 100 parts by mass of the polymer (A). The sacrificial composition may exhibit at least one of properties as an advanced material or as a high performance material. The sacrificial composition may be used in the nanotechnology process to make semiconductor device / display device application, for example semiconductor chip, or a liquid crystal, quantum dot, OLED display fabricated on a substrate controlled by semiconductors.

The invention relates to the technical field of spacecrafts, in particular to a spacecraft defense material and a preparation method thereof, and designs a structure capable of effectively absorbing and dispersing impact energy on microscopic and macroscopic scales by utilizing computer simulation and an advanced material modeling technology. A base material with high strength, high toughness, light weight and corrosion resistance is selected, nanofibers, nanoparticles or nanosheet layers are embedded into the base material by utilizing a nanotechnology so as to enhance the mechanical property and the impact resistance of the base material, and the shape, the structure and the performance of the material are accurately controlled by adopting an advanced manufacturing technology. The prepared materials are stacked, bonded or mechanically connected together to form a final defense structure, and the structure is strictly tested. By combining a nanotechnology, composite material engineering and an additive manufacturing defense material, the deep requirement of a space exploration task is met, and the safety of astronauts and the smooth completion of the task are ensured.

The present invention is in the field of materials engineering and nanotechnology. More specifically, the present invention discloses: a functional premix comprising nanoparticles and a carrier or compatibilizer; a method of obtaining the premix; a method of altering the properties of a material; and a modified material formed with improved properties. Unexpectedly, the premix of the present invention can be used to alter the properties of different kinds of materials, such as polymers, metals, ceramic materials, and / or composites of different materials. The premix of the present invention has numerous advantages in terms of transportation, use, and incorporation of nanoparticles into different materials. In one embodiment, the present invention provides significant modification of the properties of polymers and, in fact, breaks the existing concepts in this technical field. In another embodiment, the present invention provides advantages in altering the properties of metals and / or ceramic materials.

This invention belongs to the field of biomedical materials and nanotechnology, specifically relating to the synthesis and application of a multifunctional mesoporous nanomaterial. The inventors synthesized a core-shell structured mesoporous nanoparticle using mesoporous silica nanoparticles and dopamine via emulsion epitaxy. The core of the core-shell structured mesoporous nanoparticle is S-nitrosoglutathione supported on mesoporous silica, and the outer shell is pentafluorophenyl chlorophyll supported on mesoporous polydopamine, forming MSN / G@mPDA / F nanoparticles. These nanoparticles rapidly increase in temperature to 45°C under 808 nm laser irradiation. o At temperatures above a certain temperature, S-nitrosoglutathione decomposes to produce nitric oxide. Further irradiation at 750 nm generates a large amount of reactive oxygen species, killing bacteria. This combination of photothermal and photodynamic therapy effectively inhibits bacterial growth. Therefore, this method exhibits excellent antibacterial effects and can play a role in the future treatment of bacterial infections.

FIELD: nanomaterials.SUBSTANCE: invention relates to chemical technology, nanotechnology and materials science and can be used in the production of highly efficient photocatalysts, materials for photoelectrochemical cells, sensors and functional coatings. First, laser ablation of the primary material, titanium nitride TiN, is carried out in a liquid, which is distilled or deionized water, resulting in the formation of a suspension of spherical TiN nanoparticles. The resulting nanoparticles are oxidized by heating the said suspension at 80-90 °C for 2-6 hours. Then centrifugation is performed for 20 minutes at a frequency of 15,000 rpm.EFFECT: obtaining nanocrystalline titanium dioxide flakes with a controlled content of the anatase phase of up to 90% and higher at atmospheric pressure in a neutral aqueous environment without the use of acids and morphological controlling agents, and also reducing the oxidation temperature.2 cl, 3 dwg

This invention relates to the field of biodetection technology, specifically to a multimodal miRNA detection array based on Mn-CeO2@CDs nanozymes and Cas12a sensing, its preparation method, and its applications. The recognition and signal amplification probe composition based on Mn-CeO2@CDs nanozymes and Cas12a includes: a solid substrate, the DNA Y-shaped structure described in the first aspect, the composite nanozyme, and a CRISPR / Cas12a system. This invention combines DNA nanotechnology, Cas12a enzyme digestion technology, and nanozymes as signal output mediators, achieving highly specific and sensitive multimodal detection of myocarditis biomarkers (miRNAs) in fluorescence, UV-visualization, and electrochemical modes.

The present application relates to the field of nanotechnology, in particular to a raffinose-SS31 peptide multi-targeted functional chitooligosaccharide / astaxanthin nanoparticle and a preparation method and application thereof.The nanoparticle of the present application takes precise regulation at the nanometer scale, innovative application of new components and targeted synergistic delivery as the core design idea, constructs a multifunctional nanofunctional network, provides support for the nanoscale precise delivery of active ingredients such as astaxanthin, and at the same time, establishes a chitooligosaccharide nanoparticle preparation technology with high active substance loading rate and stability for the problems of low stability and poor efficacy of chitooligosaccharide encapsulated active substances;targeting ligands are introduced by structure modification to enhance the specific recognition and binding capacity of nanoparticles to specific cells and tissues, and a targeted delivery technology for site-specific release and precise delivery of active substances is established.

This invention discloses a microfluidic-based polypeptide-based helical fiber with circularly polarized luminescence and its preparation method, belonging to the field of nanotechnology. Utilizing multiple hydrogen bonding interactions between polypeptides and based on the solute conformational confinement and ordered solvent diffusion mechanism of a microfluidic laminar flow chip, this invention develops a polypeptide-based circularly polarized luminescent material with excellent luminescence performance. Circular dichroism spectroscopy and circular polarization spectroscopy tests show that the helical fiber material obtained by this invention exhibits mirror-symmetric signals. Compared with materials obtained by traditional solution stirring, the polypeptide-based helical fibers prepared in the microfluidic chip by this invention not only have a more uniform morphology but also a larger... g lum value( L -Peptide / TBI and D The luminescence asymmetry factor of -Peptide / TBI is ±1.9×10⁻⁶. ‑3 Furthermore, this method has a certain degree of universality and is applicable to the assembly of other macromolecules, including polymers, nucleic acids, and proteins.

The application belongs to the field of drug delivery nanotechnology, and provides a method for preparing cubic lipid nanoparticles encapsulating small interfering ribonucleic acid and application thereof. The application adopts a trinity design of ion complex pre-assembly of succinylated glycerol monooleate and cationic lipids, space stabilization of poloxamer 407, and rapid particle formation by microfluidics, realizes stable construction of internal nanostructure of inverse bicontinuous cubic phase, encapsulation of small interfering ribonucleic acid in water channel network with high drug loading, long-term stability of colloids under physiological ion strength conditions, and excellent batch consistency, solves the technical contradictions of existing lipid nanometer delivery systems, such as difficulty in giving consideration to low polydispersion and batch consistency, mutual restraint of cationic complex strength and colloidal stability, and difficulty in synergistic optimization of high drug loading and stability of cubic phase structure under high solid content microfluidic conditions, and has wide application value in gene therapy and nucleic acid drug delivery.

The application discloses a coenzyme Q10-loaded nano organic metal framework material and a preparation method and application thereof, and relates to the field of biological macromolecular materials and nanotechnology. The preparation method comprises the following steps: (1) preparation of Al-MOF; (2) preparation of the coenzyme Q10-loaded nano carrier Al-MOF; and (3) preparation of the coenzyme Q10-loaded nano carrier Al-MOF@PEG. In the application, 2,5-dihydroxyterephthalic acid and aluminum (Al) ions are selected, Al-MOF nano carriers are synthesized through a solvothermal method, coenzyme Q10 is loaded into the interspace of the Al-MOF nano carriers, then mPEG5k-NH2, i.e. a kind of PEG with an amino group, is selected, and the carboxyl on the surface of the Al-MOF is activated by dicyclohexyl carbodiimide (DCC), and the amino at the end of the PEG is covalently modified to the surface of the nano carrier Al-MOF through “click chemistry” between the carboxyl and the amino. The nano carrier Al-MOF has a larger pore size, the drug loading capacity is increased, the water solubility is significantly increased after the introduction of the PEG, the circulation time of the nano carrier in a physiological environment is prolonged, and the bioavailability of the coenzyme Q10 is further improved.

The application belongs to the field of material science and nanotechnology, and particularly relates to a copper-based catalyst with a spatially separated tensile and compressive strain field. The catalyst comprises a copper matrix and nickel oxide pinning centers atomically dispersed on the surface of the copper matrix, wherein the copper matrix has spatially separated compressive strain regions and tensile strain regions, and the two types of strain regions are distributed at a nanoscale interval. The nickel oxide pinning centers are in an atomic dispersion state, form a stable Ni-Cu bonding structure with the copper matrix, can effectively anchor the strain field, and improve the stability of the material. The application adopts a wet chemical reduction method to construct a spatially separated tensile and compressive strain field in a single copper-based material, the local strain degree can be controlled, the preparation method is simple in process and mild in conditions, does not require special equipment, is easy to produce on a large scale, and has a good industrial application prospect.

This invention relates to a method for non-destructive treatment of two-dimensional material surfaces using a mass-selective gas cluster ion beam and to transistor devices thereof, belonging to the fields of microelectronics, nanotechnology, and two-dimensional material device manufacturing. This invention introduces a gas cluster ion beam integrated with a mass selector to treat the surface of two-dimensional materials before key process nodes in the two-dimensional material device fabrication process. By integrating the mass selector and gas atomic clusters, the cluster size is precisely screened, and the average energy of each cluster atom is controlled within a low-temperature range of approximately 1 eV. Utilizing the "low energy per atom" of the cluster ions, polymer residues on the two-dimensional material surface can be thoroughly removed while completely avoiding damage to its crystal structure. This method is compatible with standard photolithography processes, significantly reduces device contact resistance, and improves carrier mobility, providing a reliable surface treatment solution for the fabrication of high-performance two-dimensional material devices.