11416 results about "Nanotechnology" patented technology

The invention discloses a semiconductor structure manufacturing method and a semiconductor structure, and the manufacturing method comprises the steps: carrying out the periodic cycle etching of a preset number of times on a substrate through employing an etching technology, forming a first intermediate structure on the substrate, and carrying out the first processing of the first intermediate structure, including employing a first gas and a second gas, removing a part of thickness of the passivation layer deposited on the side wall of the first intermediate structure, and reacting with the substrate material which exists on the side wall and is exposed on the surface of the convex part to generate a reaction product layer; and removing the reaction product layer by using a third gas and a fourth gas so as to remove at least part of the lug boss, and repeatedly executing the etching process and the first processing process until a high aspect ratio etching structure is formed on the substrate. According to the method, the etching process and the side wall processing technology are organically combined, the etching rate and the side wall quality are balanced through alternate circulation, and deep silicon etching with the higher aspect ratio and the smaller nanoscale size can be achieved.

Flexible high-density mapping catheter tips and flexible ablation catheter tips with onboard high-density mapping electrodes are disclosed. These tips can be used for diagnosing and treating cardiac arrhythmias. The flexible, distal tips are adapted to conform to tissue and comprise a plurality of microelectrodes mounted to permit relative movement among at least some of the microelectrodes. The flexible tip portions may comprise a flexible framework forming a flexible array of microelectrodes (for example, a planar or cylindrical array) adapted to conform to tissue and constructed at least in part from nonconductive material in some embodiments. The flexible array of microelectrodes may be formed from a plurality of rows of longitudinally-aligned microelectrodes. The flexible array may further comprise, for example, a plurality of electrode-carrying arms or electrode-carrier bands. Multiple flexible frameworks may be present on a single device. A delivery adapter having an internal compression cone is also disclosed.

The present disclosure relates to use of an acid for developing or treating a radiation-sensitive film including two or more elements having a high patterning radiation-absorption cross-section. The acid can be employed to form a pattern by a negative tone development process or to treat a developed pattern by further removing residual resist components.

Systems and methods are provided for targeting one or more features in a region of interest, and efficiently removing the features from an array of features. The systems and methods can remove one or more beads that contain analytes, intermediate agents, or a combination thereof, from the region of interest of a substrate by emitting light toward the beads on the substrate.

Described herein are systems and methods for analyzing biological samples. Including a method for processing an analyte, comprising providing a fluidic device comprising the analyte and one or more polymer precursors; selecting a discrete area within said fluidic device; providing an energy source in optical communication with fluidic device; and selectively supplying a unit of energy generated from the energy source to the fluidic device to generate a polymer matrix within the fluidic device, wherein the polymer matrix is within the discrete area or adjacent to the discrete area.

The present disclosure provides devices for delivery of powder formulations and methods of manufacture and use of such devices.

Dry development of resists can be useful, for example, to form a patterning mask in the context of high-resolution patterning. Dry development may be advantageously accomplished by a method of processing a semiconductor substrate including providing in a process chamber a photopatterned resist on a substrate layer on a semiconductor substrate, and dry developing the photopatterned resist by removing either an exposed portion or an unexposed portion of the resist by a dry development process comprising exposure to a chemical compound to form a resist mask. The resist may be an EUV-sensitive organo-metal oxide or organo-metal-containing thin film EUV resist.

Described herein are systems and methods for analyzing biological samples. Including a method for processing an analyte, comprising providing a fluidic device comprising the analyte and one or more polymer precursors; selecting a discrete area within said fluidic device; providing an energy source in optical communication with fluidic device; and selectively supplying a unit of energy generated from the energy source to the fluidic device to generate a polymer matrix within the fluidic device, wherein the polymer matrix is within the discrete area or adjacent to the discrete area.

Various embodiments herein relate to methods, apparatus, and systems for baking metal-containing on a semiconductor substrate in the presence of a reactive gas species. For example, the method may include receiving the substrate in a process chamber, the substrate having a photoresist layer thereon, where the photoresist layer includes a metal-containing photoresist material; flowing a reactive gas species from a gas source, through a gas delivery line, into the process chamber, and exposing the substrate to the reactive gas species in the process chamber; and baking the photoresist layer while the substrate is exposed to the reactive gas species.

The invention discloses a preparation method of PEDOT: PSS (poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate))-based composite fiber with silver nanoparticles loaded on the surface. The method comprises the following steps: uniformly mixing a silver nanowire solution with a PEDOT: PSS solution, or uniformly mixing the silver nanowire solution, the PEDOT: PSS solution and a polymer solution to obtain a spinning solution; extruding the spinning solution into a coagulating bath through a wet spinning process and soaking to obtain nascent composite fibers; and drying the nascent composite fiber to obtain the PEDOT: PSS-based composite fiber of which the surface is loaded with silver nanoparticles and the interior contains silver nanowires. The interior and surface structures of the PEDOT: PSS fiber are simultaneously modified, the interior of the fiber contains a silver nanowire structure, and the surface of the fiber has a silver nanoparticle structure. The composite fiber has the characteristics of ultra-sensitive SERS sensing capability, high conductivity, electric heating, molten drop resistance and antibacterial property.

The invention discloses a preparation method of a semiconductor structure and the semiconductor structure, and the preparation method comprises the steps: carrying out the etching of a substrate through employing an etching technology, so as to form a high-aspect-ratio etching structure on the substrate; after a periodic cycle step of a preset number of times of etching process is completed every time, a treatment process different from the etching process is used, and partial thickness of a passivation layer deposited on the side wall of an intermediate structure formed before the high aspect ratio etching structure is formed is removed. And removing at least part of the protruding part which exists on the side wall and is exposed from the surface of the residual passivation layer. According to the method, the etching process and the side wall processing technology are organically combined, the etching rate and the side wall quality are balanced through alternate circulation, and deep silicon etching with the higher aspect ratio and the smaller nanoscale size can be achieved.

Development of resists are useful, for example, to form a patterning mask in the context of high-resolution patterning. Development can be accomplished using an organic vapor such as a carboxylic acid. In some implementations, the organic vapor is trifluoroacetic acid. In some implementations, the organic vapor is hexafluoro-acetylacetone. A metal-containing resist film such as an EUV-sensitive organo-metal oxide may be deposited on a semiconductor substrate using a dry or wet deposition technique. The metal-containing resist film on the semiconductor substrate may be developed using the organic vapor, or residue of metal-containing resist material formed on surfaces of a process chamber may be removed using the organic vapor.

The invention provides antibacterial polypropylene plastic, and aims to obtain a composite antibacterial agent with the advantages of an inorganic antibacterial agent and an organic antibacterial agent by compounding the inorganic antibacterial agent and the organic antibacterial agent, and the antibacterial polypropylene plastic which is good in antibacterial property, good in migration resistance, good in mechanical property, good in mechanical property, good in mechanical property and the like is obtained by adding the obtained composite antibacterial agent into the polypropylene plastic. The invention discloses antibacterial polypropylene plastic with long-acting antibacterial property.

The invention belongs to the technical field of battery materials, and particularly relates to a method for preparing a porous carbon structure containing a sub-nanoscale ionic conduction improvement layer by utilizing atomic layer deposition and application. The invention discloses a porous carbon-silicon negative electrode structure, which is characterized in that a sub-nano-scale ion conduction improvement layer is added between a porous carbon substrate and silicon particles, and the sub-nano-scale ion conduction improvement layer comprises silicon carbide, aluminum phosphide, aluminum nitride, aluminum oxide, lithium phosphate, aluminum phosphate and lithium aluminum phosphate. Meanwhile, the invention also discloses a preparation method of the porous carbon-silicon negative electrode structure, namely, a sub-nano-scale ion conduction improvement layer is deposited on the porous carbon substrate through an atomic layer deposition method, so that the binding force between the sub-nano-scale ion conduction improvement layer and silicon particles and an ion transport channel are increased, and the ion conduction of a vapor deposition silicon-carbon negative electrode material is improved; the polarization of the material is effectively reduced, so that the rate capability of the battery is improved, and the cycling stability of the porous carbon structure battery is improved.

According to the adjustable and controllable silk fibroin porous microspheres and the preparation method thereof, the microspheres with the size of 20 microns to 1 mm are prepared by adjusting technological parameters for preparing the microspheres. Pores are of a nano-submicron-micron multi-stage composite pore structure, and the porous microspheres have elasticity. The method provided by the invention shows wide application potential in the aspect of preparing silk fibroin microspheres with diversified sizes, and the microspheres have remarkable advantages in application scenes of medical injectable microspheres and medical embolism microspheres due to unique physical and chemical characteristics; the method has remarkable application value in multiple fields.

The invention relates to a layered drug-loading microneedle patch as well as a preparation method and application thereof. The preparation method of the layered drug-loading microneedle patch comprises the following steps: S1, dissolving a drug and a soluble high-molecular polymer in a solvent according to a mass ratio of (2: 1)-(1: 12) to form a needle tip solution, then filling a needle tip cavity of a microneedle mold with the needle tip solution, drying, and removing redundant drug residues on the surface to form a drug-loading needle tip layer; and S2, filling a mold containing the drug-loading needle tip layer with a photocurable polymer, performing ultraviolet curing for 10-30 seconds under the wavelength of 365-405 nm, and then performing demolding to form a substrate layer, thereby obtaining the layered drug-loading microneedle patch. According to the method, one-time filling of the needle tip part is successfully achieved by combining needle tip auxiliary material proportion optimization, meanwhile, the curing process is rapid, the medicine utilization rate and the process stability are remarkably improved, the medicine stability is good, and the method is suitable for industrial production.

The invention relates to the field of biomedical materials, in particular to a novel composite collagen material for wound repair, and particularly relates to a preparation method of the novel composite collagen material containing 21-type recombinant humanized collagen (ColpepA1 21) and application of the novel composite collagen material in wound repair. The ColpepA1 21 is used for remarkably promoting key biological reactions in the wound healing process, including accelerating cell migration, enhancing the skin hydration state and barrier function and improving the stability and elasticity of the skin structure, a novel composite collagen material is developed, wound healing and cell regeneration can be effectively promoted, and oxidative damage can be relieved.

The invention discloses a difunctional filler synergistically enhanced polymer solid electrolyte and a solid-state battery, and belongs to the field of solid-state batteries. The electrolyte adopts a polymer matrix, a lithium salt and two functional fillers: the first filler has a high dielectric constant, and can accelerate dissociation of the lithium salt, fix negative ions of the lithium salt and improve the transference number of lithium ions under the action of self polarization; and the second filler has high electrochemical window and ionic conductivity, can inhibit high-voltage decomposition, and is adaptive to a high-voltage positive electrode material. Through cooperation and balance design of the two kinds of filler, ion transmission, interface stability and high-pressure compatibility can be considered at the same time. In addition, the invention further designs a composite negative pole piece, the surface of the negative pole piece is coated with the solid electrolyte, and the ion transmission kinetics in the pole piece can be remarkably improved. On the basis, the invention develops a high-performance solid-state battery which is excellent in electrochemical performance and can play an important role in the fields of consumer electronics, electric automobiles, energy storage systems, low-altitude flight and the like.

The invention relates to the technical field of high polymer materials and preparation thereof, and discloses a wet anti-slip bionic friction pad on a glass surface, which is inspired by a micro-nano structure of toe pads of organisms such as tree frogs and long-horned grasshoppers with wet friction increasing characteristics, and a bulge array is added on the surface of a high-friction material, so that the friction coefficient of the friction pad is increased; the microstructure arrays can discharge a water film on the surface of the friction pad under the capillary action in a wet environment, and the effective contact area between solids is increased, so that the friction pad and a friction surface are always kept in a dry friction state, and stable friction force is ensured. The friction pad comprises a connecting layer, a supporting layer and a tail end protruding straight column array, a tail end contact layer is in a hexagonal straight column shape, the diameter of an inscribed circle of a hexagonal micro-column structure ranges from 5 micrometers to 5000 micrometers, column bodies are densely arranged in a hexagonal mode, the height of the column bodies ranges from 10 micrometers to 1500 micrometers, the tail ends of the column bodies are planes, the interval between every two column bodies ranges from 2 micrometers to 600 micrometers, and tight drainage grooves are formed.

To provide a label which improves recyclability of an adherent after the label is adhered, and is capable of adjusting peeling of a dummy adhesive layer and an intermediate substrate.SOLUTION: A label comprises a surface substrate, an intermediate substrate and an adhesive layer. In the label, between the surface substrate and the intermediate substrate, a first thermally curable resin layer and a second thermally curable resin layer are disposed in this order. The second thermally curable resin layer and the intermediate substrate can be peeled, and the intermediate substrate is a paper substrate. An adhesive agent constituting the adhesive layer is a re-moistened adhesive agent containing at least one selected from a group consisting of a polyvinyl alcohol-based adhesive agent, a starch-based adhesive agent, a cellulose-based adhesive agent and a polyvinyl acetate-based adhesive agent.SELECTED DRAWING: None

The invention discloses a PCB ink-jet printing pretreatment agent, a preparation method thereof and a PCB ink-jet printing method, and relates to the technical field of printed circuit board production. The PCB ink-jet printing pretreatment agent is prepared from the following components in mass concentration: 0.1 to 0.5 percent of an anti-diffusion agent, 0.1 to 0.5 percent of a wetting agent, 0.2 to 1.0 percent of a homogenizing agent, 0.5 to 2.5 percent of a dispersing agent, 0.1 to 3.0 percent of a cosolvent and the balance of water. The PCB ink-jet printing pretreatment agent can be used in a surface treatment procedure of a fine PCB pattern ink-jet printing process, a uniform organic layer can be formed on a PCB copper surface and a substrate surface, and the organic layer can effectively reduce surface tension of the copper surface and the substrate surface, prevent diffusion of jet printing ink on the PCB surface, promote uniform arrangement of the ink and improve the printing quality of the PCB. Stable and neat linear ink can be formed, and the product yield of a fine line ink-jet printing process is improved.

Various implementations of implants and implant surfaces for clinical rehabilitation or enhancement of a patient, related systems, and computer programs and methods for the design and manufacturing of implants are disclosed. A macroscale shape, a microscale surface texture, and a nanoscale surface topography are overlaid to increase, condition, and thereby functionalize an implant surface. A thin-film coating and / or laser interferometry is utilized to overlay on a machined implant substrate a nanoscale surface topography. Manufacturing the macroscale shape and the microscale texture may be performed with an ultrashort pulsed laser system in separate process steps. The design of a dental implant may be assisted by a self-learning computer program product, based on trained coupled shape models including, for example, mesh-based statistical shape and orientation models.

The invention discloses an SERS (Surface Enhanced Raman Scattering) sensing chip with stable reusability as well as a preparation method and application of the SERS sensing chip, and belongs to the technical field of photoelectric sensing devices. Comprising a substrate; the semiconductor photocatalyst is positioned on the surface of the substrate; the co-oxidant and the co-reducing agent are positioned on the surface of the semiconductor photocatalyst; the occupying molecule is covalently connected with an exposure site of the auxiliary reducing agent in space; the template molecule is in covalent linkage or coordination linkage with an exposure site of the pro-oxidant in space; wherein the template molecule can be subjected to photocatalytic degradation, so that the pro-oxidant obtains the exposure site again. The template molecules in the sensing chip can be quickly removed through space confinement photocatalytic degradation, and the accuracy of quantitative analysis is improved by using the inorganic imprinted polymer as internal standard molecules.

The invention relates to a preparation method for improving a sodium alginate pervaporation membrane by using a two-dimensional leaf-shaped zeolite imidazole framework (ZIF-L) material, and particularly relates to a preparation method for improving a sodium alginate pervaporation membrane by using a two-dimensional leaf-shaped zeolite imidazole framework (ZIF-L) material. The pervaporation mixed matrix membrane comprises a base membrane and a separation layer membrane, the base membrane adopts a polyacrylonitrile (PAN) membrane, and the separation layer is composed of ZIF-L and sodium alginate. According to the invention, the distribution of ZIF-L in the membrane is improved, directional arrangement is formed, and the separation effect and selectivity of the composite membrane are improved. A novel process is adopted, the defect problem of the ZIF-L-SA membrane is eliminated, the continuous ultrathin ZIF-L membrane is prepared through a secondary seed growth method, and the performance of the two-dimensional ZIF-L membrane is improved. The ZIF-L synthesis conditions are mild, the method is simple, hydrophilic modification of the membrane surface is achieved, an internal water molecule transmission channel is constructed, and the separation factor and stability of the membrane are improved. The prepared high-flux pervaporation membrane has a wide application prospect.

The invention belongs to the field of biomedical materials, and particularly discloses a preparation method and application of a 3D printing porous composite scaffold. I-type collagen and silk fibroin composite gel is modified on a 3D printing three-element doped hydroxyapatite / polycaprolactone (PCL) composite scaffold with a polydopamine coating, the three-element doped hydroxyapatite is synthesized by using a chemical precipitation method, and Mg < 2 + >, Sr < 2 + > and SeO3 < 2-> ions are doped in crystal lattices. The 3D printing porous composite scaffold provided by the invention effectively simulates the structure and function of soft and hard combination of natural bones, is helpful for regulating and controlling the stem cell fate to improve the bone regeneration process, repairs bone defects while eliminating tumors, and can be applied to bone defect repair or osteosarcoma treatment.

The invention relates to an implantable biological electrode and a manufacturing method of an implantable glucose monitoring probe. The manufacturing method of the implantable biological electrode comprises the following steps: S1.1, providing a flexible substrate; s1.2, silk-screening silver ink on the first surface of the flexible substrate to form a non-implanted conductive region of the first functional electrode; s1.3, silk-screening carbon ink on the first surface of the flexible substrate to form an implanted conductive region of the first functional electrode, and forming a series structure by the non-implanted conductive region and the implanted conductive region to jointly form a conductive region of the first functional electrode; and S1.4, an insulating layer is screen-printed on the first surface of the flexible substrate, the insulating layer covers the conductive region of the first functional electrode, and the working region is exposed. According to the functional electrode, the characteristic of good biocompatibility of the carbon circuit layer and the characteristics of small resistance and high signal transmission efficiency of the silver circuit layer are fully utilized, the circuit impedance of the functional electrode is effectively reduced, the signal transmission efficiency is improved, and the biocompatibility and long-term stability of an implantation area are ensured.

The invention belongs to the technical field of biomedical materials, and relates to ultrasonic response adhesion integrated hydrogel as well as a preparation method and application thereof, the hydrogel comprises a hydrogel matrix, an interface anchoring agent and a functional load component; the preparation method comprises the following steps: 1, preparing a hydrogel precursor solution, and preparing a hydrogel matrix into a solution; 2, carrying out mold molding or injection crosslinking on the solution prepared in the step 1 to form hydrogel; 3, preparing an interface anchoring agent solution, and dissolving or dispersing an interface anchoring agent in a solvent to prepare the interface anchoring agent solution; the ultrasonic responsive adhesive hydrogel platform provided by the invention can provide an efficient, controllable and universal solution for tissue adhesion, targeted therapy, wearable attachment and the like in a complex microenvironment, and is suitable for a plurality of clinical scenes such as chronic wound management, surgical postoperative closure, infection control, adhesive bioelectronic fixation, soft tissue engineering and the like.

Embodiments of the invention provide compositions useful in implantable devices such as analyte sensors as well as methods for making and using such compositions and devices. In typical embodiments of the invention, the device is a glucose sensor comprising a polymeric composition disposed on a flexible assembly within the sensor that includes amounts of one or more immunosuppressant agents designed to provide such sensors with improved material properties such as enhanced biocompatibility.

This disclosure relates to a biological tissue forming method includes the following steps: providing a biological tissue forming package with a base, a membrane, a sliding assembly and a sealing film that seals a chamber of the base used for receiving the membrane and the sliding assembly with one of the base and the sealing film being light-transmitting; passing a biological tissue fluid through the sealing film and the sliding assembly so as to be dispensed on the membrane; moving the sliding assembly away from a covering position used for covering the membrane via at least one passive magnetic element so as to expose the biological tissue fluid on the membrane; and emitting the biological tissue fluid exposed on the membrane by a curing light transmitting through the one of the base and the sealing film so as to cure the biological tissue fluid into a biological tissue.

A method for circumscribing an insulating barrier region around a singular conductive microneedle structure or plurality of conductive microneedle structures adhered to a fixed substrate for the purpose of spatially defining a conduit for the routing of an electrical signal from the surface of said microneedle or microneedles to the posterior surface of the substrate is disclosed herein. A microneedle-based electrochemical biosensors structure comprises a substrate, a microneedle biosensor, a primary electrically conductive element, a secondary electrically conductive element and an electrically insulative annular barrier.