295results about How to "Little flexibility" patented technology

A medical instrument comprising a flexible, filamentous shaft slideably disposed in a sheath, the instrument including an electronic imaging system comprising an image sensor carried on a distal end portion of the instrument. The shaft may be used as a guidewire for a complementary guided device, or it may be used to carry a functional element for performing a procedure at a target site in a patient's body. In other embodiments, the present invention contemplates a flexible sheath, preferably having a simple tubular construction, with an electronic imaging system at its distal end. The sheath is adapted to slideably receive a shaft, preferably a filamentous shaft, that closely fits the sheath. The shaft carries functional element at its distal end. The instruments according to the present invention may include one or more filaments along their length for deflecting an insertable portion of the instrument.

Protein crystallization droplet actuators, systems and methods are provided. According to one embodiment, a droplet actuator for providing an array of crystallization conditions is provided and includes: (a) two or more processing reservoirs; (b) two or more dispensing reservoirs collectively comprising two or more crystallization reagents; and (c) a port for introducing a sample for crystallization analysis. Systems including the droplet actuator, methods of providing an array of crystallization conditions, and methods of identifying crystallization conditions are also provided.

The invention discloses a rapidly charged flexible lithium ion battery and a preparation method of electrodes of the rapidly charged flexible lithium ion battery, belonging to the technical field of lithium ion batteries. The electrodes of the lithium ion battery are integrally designed by a current collector and active substances. An ultralight and flexible three-dimensional graphene communicating network structure (short for graphene foams) is used as a current collector, the active substances are embedded on the surface of the three-dimensional graphene foams, the integrated active substances and the current collector can be obtained through hydrothermal, pulp filling and impregnation processes, and the content of the active substances can be regulated as required. The electrodes of the battery are not required for a metal current collector, a binder and a conductive agent, the ultrahigh conductivity and porous structure of the three-dimensional graphene network provide rapid diffusion channels for lithium ions and electrons. The lithium ion battery consisting of a positive electrode and a negative electrode can be rapidly charged, is bendable and has no capacity loss. The method disclosed by the invention is low in product production cost, ultralight and ultrathin, and capable of realizing large-batch production, and has high practical application values.

The invention discloses the flexible retina chip. Between top layer polymeric film and bottom polymeric film there are silicon islands and via holes, in the silicon island there are function units which is used to simulate physiological function, and the between silicon island and top layer there is lead wire layer; bottom polymeric film is bonded with the top layer polymeric; the electric pole is on the top layer polymeric film or bottom polymeric film. The chip uses the MEMS technology to realize the integration of micro function unit and flexible basement. On the surface of the chip there are holes, so it is easy for nutriment and metabolite to exchange. The invention has the advantages of good biology function perfect ness, good metabolism, and improving the bending property and flexible of chip. The invention is used to high efficiency batch make.

The invention relates to a lining-reinforced hollow fiber membrane tube as well as a preparation device and preparation method thereof, belonging to the field of preparation of polymer hollow fiber microporous membranes. In the membrane tube, a film forming chimney is designed reasonably, a coating layer on a braided tube led from a coating machine is subjected to controllable steam diffusion-induced phase inversion firstly, and then enters a coagulating bath, so that an open-pore surface skin layer with high porosity is formed on a film separation layer, and the radial direction of the membrane layer is in an integral asymmetric and interpenetrating cell-shaped structure; a composite material is selected to prepare a transition layer, so that the transition layer has excellent adhesive force and hardness, excellent compatibility with a surface separation layer and tiny cubical contraction in a phase conversion process at the same time; optimized braided tube size and braiding densityare selected to ensure that the braided tube has lower flexibility; and a method capable of maintaining reasonable roundness and the like in the production process ensures that the lining polyvinylidene fluoride (PVDF) hollow ultrafiltration membrane tube has the advantages of integral asymmetric structure with high integrity, high-porosity surface separation layer, higher back pressure enduring capability and the like.

A small water-cooling type electronic component cooling apparatus is provided. The electronic component cooling apparatus comprises a so-called water-cooling heat sink 3 , a radiator 7 cooled by an electric fan 5 , first and second coolant paths 9, 11 for circulating a coolant between the heat sink 3 and the radiator 7 , and an electric pump 13 to supply a moving energy to the coolant. The electric pump 13 is arranged at a position facing the heat-radiating portion of the radiator 7.

The present invention relates to an electroluminescence device based on a boron-containing organic compound, wherein a main body material comprises a first organic compound and a second organic compound, the difference between a singlet state energy level and a triplet state energy level of the first organic compound is not greater than 0.2 eV, the singlet energy level of the second organic compound is greater than the singlet energy level of the first organic compound by more than 0.1 eV, and the triplet energy level of the second organic compound is greater than the triplet energy level of the first organic compound by more than 0.1 eV; the first organic compound and the second organic compound have the different carrier transport characteristics, wherein an object material is the boron-containing organic compound, the singlet energy level of the object material is lower than that of the first organic compound, and the triplet energy level of the object material is lower than that ofthe first organic compound. An organic light-emitting device prepared by the method has the characteristics of high efficiency and long service life.

According to embodiments of the present invention, an ultra high speed miniature image acquisition system based on a scanning light beam for use with clinical endoscopic imaging applications, for example.

The invention relates to a composite antibacterial material of graphene quantum dot and fibroin, preparation and application. The composite antibacterial material of graphene quantum dot and fibroin is characterized in that the mass ratio of the graphene quantum dot or doped graphene quantum dot to the fibroin is 1:1 to 1:10000; the doped graphene quantum dot is a non-metallic compound, a metallic compound or an organic compound, which contains a doping atom, has weak oxidization or reduction property, or is easy to coordinate; the concentration of a dopant is 0.01-10 mM; and the molecular weight of the fibroin is 1000-10000000 Da. The composite antibacterial material disclosed by the invention has the capability of greatly generating hydroxyl radicals having antibacterial capability under visible light or in a dark field; particularly, the composite material of B-doped graphene quantum dot and fibroin has excellent antibacterial capability; and thus, the composite antibacterial material used as an in-vivo antibacterial material or a wound suture material can be directly used in living bodies.

The invention relates to an organic light-emitting device taking an exciplex as a main body material, in particular to an organic light-emitting device containing the main body material and a fluorescent material, wherein the main body material comprises a first organic compound and a second organic compound, a mixture or an interface formed by the first organic compound and the second organic compound generates the exciplex under the condition of optical excitation or electric field excitation, and the emission spectrum of the formed exciplex and the absorption spectrum of the fluorescent doped material are effectively overlapped to form the effective energy transfer; the first organic compound and the second organic compound have the different carrier transport characteristics, wherein the fluorescent material is an organic compound containing the boron atoms. The organic light-emitting device prepared by the method has the characteristics of high efficiency and long service life.

The invention provides an improved phosphorus fixing film used in DGT (diffusive gradients in thin films) measurement. The improved phosphorus fixing film is a polyacrylamide gel film containing zirconium dioxide (ZrO2) and is characterized in that ZrO2 particles of which the particle size is less than or equal to 5mu m are uniformly distributed on the surface of the phosphorus fixing film. A preparation method of the improved phosphorus fixing film comprises the following steps: uniformly mixing ZrO2 powder with the moisture content of 45-55% with an acrylamide solution at the weightmeasurement ratio of (1:3)-(1:6); grinding and then carrying out ultrasonication; standing for removing precipitates, adding tetramethylethylenediamine of which the volume is (1:1600)- (1:1400) of that of acrylamide and a 10% ammonium persulfate solution of which the volume is (1:60)-(1:40) of that of acrylamide, uniformly mixing and injecting into a glass mold; horizontally placing the glass mold at room temperature; After the zirconium powder is freely precipitated, raising the temperature to 40-60DEG C until the mixed solution forms a gel film; and soaking in de-ionized water for more than 12 hours, thus obtaining the phosphorus fixing film. The phosphorus fixing film provided by the invention can be used for maintaining high phosphorus ion adsorption capacity and simultaneously improving the resolution ratio of DGT in phosphorus analysis.

The invention relates to an electroluminescent device based on an exciplex system and matched with a boron-containing organic compound, wherein a subject material contains a first organic compound anda second organic compound, the difference between the HOMO energy level of the first organic compound and the HOMO energy level of the second organic compound is 0.2 eV or more, and the difference between between the LUMO energy level of the first organic compound and the LUMO energy level of the second organic compound is 0.2 eV or more. A mixture or an interface formed by the first organic compound and the second organic compound generates an exciplex under the excitation of the light or an electric field, the singlet energy level of the exciplex is higher than that of an object material, and the triplet energy level of the exciplex is higher than that of the object material. The first organic compound and the second organic compound have different carrier transport characteristics, andthe object material is the boron-containing organic compound. An organic light-emitting device prepared by the method has the characteristics of high efficiency and long service life.

The invention discloses a method for drilling and milling sliding sleeves and ball seats of a horizontal well by a continuous oil pipe. The method comprises the following steps of: (1) driving a combination of a sleeve and a back insertion sealing pipe string; (2) mounting ground equipment and connecting through a pipeline; (3) driving the continuous oil pipe and a drilling and milling tool; (4) detecting the positions of the sliding sleeves and the ball seats; (5) starting a pump, injecting drilling and milling liquid, and slowly driving the continuous oil pipe; (6) performing drilling and milling operation, and controlling weighting within the range of 0.5-1.5 tons during drilling and milling; and (7) upwards lifting the continuous oil pipe 5-10m when every sliding sleeve and the ball seat are completely drilled, enabling the drilling and milling liquid to circulate one cycle and operating till the completion of drilling and milling of all the sliding sleeves and the ball seats in a shaft. According to the method for drilling and milling the sliding sleeves and the ball seats of the horizontal well by the continuous oil pipe, disclosed by the invention, an underground tool combination of the sliding sleeves and the ball seats can be continuously drilled and milled through the continuous oil pipe, the ground pump injection equipment and a liquid drive drilling and milling tool are utilized for drilling and milling the sliding sleeves and the ball seats of the horizontal well, the drilling and milling efficiency and the utilization rate of the drilling and milling liquid are improved, and the well workover cost is also reduced.

The invention relates to a magnetic-navigation joint type puncture needle which comprises a head section and needle sections, wherein, the head section is made of stainless steel material with high magnetic conductivity and is connected with the following needle sections coaxially mounted with the head section through a flexible joint; two needle sections are also coaxially connected with each other through a flexible joint; the needle sections are made of non-magnetic stainless steel material; the flexible joints adopts serpentine tubes formed by melting and engraving cobalt-chromium alloy through laser; and both the head section and the needle sections can be bent, but the flexibility of the head section and that of the needle sections are smaller than the flexibility of the flexible joints. According to the invention, an extra magnetic field force is used to cause the head section of the needle to deflect, so that the following purposes can be achieved that the insertion direction of the needle can be changed, and the other needle sections also deflect with the deflection of the head section; accurate navigation for and control over puncture path and puncture position when the puncture needle performs a non-direct channel puncture in a human body; the puncture needle provided by the invention can reach niduses which other types of puncture needles can not reach; the application scope of minimally invasive surgery is expanded; iatrogenic injuries can be reduced; and patients can be benefited.

The embodiment of the invention discloses a method for fabricating a flexible electrode, which comprises the steps of dissolving perchlorate and a 3,4-ethylene dioxo thiophene monomer in an acetonitrile solution, obtaining a polymerized electrolyte, fabricating a substrate with graphene paper, immersing the substrate in the polymerized electrolyte to serve as a working electrode, conducting electrochemical polymerization treatment, forming a polyoxythiophene membrane electrode layer on the substrate, cleaning and drying the substrate, and obtaining the flexible electrode. According to the method, the characteristics of light weight, good strength, high hardness and the like of the flexible graphene paper are utilized; the flexible graphene paper serves as an electrode base of a super capacitor; a polythiophene electrode is electrochemically polymerized on the graphene paper to form the conductive polythiophene flexible electrode of the double electrode layer / pseudocapacitance complementary graphene paper; and the flexible electrode is good in flexibility, high in specific capacity and light in weight, and is very suitable for fabricating the super capacitors for various assembling electromobiles.

AU-shaped slot type artificial surface plasmonband elimination filter belongs to a multiband band elimination filter. The band elimination filter comprises a flexible dielectric substrate, a periodic metal optical grating, a U-shaped slot, a coplanar waveguide and a coupled structure, wherein the periodic metal optical grating is printed on the flexible dielectric substrate; the periodic metal optical grating is connected with the coupled structure and the coplanar waveguide; the periodic metal optical grating is combined with the U-shaped slot; the U-shaped slot represents that a metal film is not printed. The U-shaped slot type artificial surface plasmonband elimination filter has the advantages that 1, the periodicity of the U-shaped slot is selected as 1,2 and 3, band elimination filtering of one-wave band, two-wave band and three-wave band of a microwave band can be realized; 2, the structure is simple, the manufacturing is convenient, and the periodic metal optical grating structure has strong constraint on an electromagnetic field; 3, the structure of combining the periodic metal optical grating with the U-shaped slot is smaller in size and flexible, and can be applied to a microwave integration circuit with a compact size and a special function; 4, the metal optical grating structure can be applied to microwave, millimeter wave and terahertz frequency band through changing the basic parameters.

The invention discloses special high-temperature resistant waterproof air and moisture permeable resin for coating printing and a preparation method thereof. The resin is prepared by the following steps of: obtaining a prepolymer through a reaction between polyether polyol and diisocyanate; and modifying the prepolymer by use of polyhedral oligomeric silsesquioxane to obtain the resin, wherein the average molecular weight of the resin is 50000-150000g / mol, the viscosity is 60000-100000cps / 25 DEG C, and the solid content of the resin is 30-55%. In the polyurethane resin prepared by the method disclosed by the invention, the moisture permeability can reach 7500g / m<2>.24H, and the water pressure resistance is greater than 10000mmH2O; moreover, the polyurethane resin has the processing characteristic of tolerating a temperature of 200-230 DEG C for continuous 30S during coating printing; and the resin has highly-permeable coating and soft and smooth handfeel, and is washable and very suitable for the direct coating and coating printing technology of fabric coating processing.

This present disclosure provides reliable methods and apparatus for delivering a pharmaceutical active ingredient to a substrate. In some examples, the pharmaceutical active ingredient is applied to the substrate after the substrate has been fully prepared. The substrate can be an edible product or an inedible substrate. The edible product can be a baked or otherwise cooked good. In some examples, the edible product can be fruits and / or nuts. The method and apparatus for delivering the pharmaceutical agent can be configured to deliver microquantities of the pharmaceutical active ingredient to the substrate.

The invention discloses a pneumatic type soft mechanical hand with a touch sensing function. The pneumatic soft mechanical hand is composed of an electric heating phase change actuator, a soft mechanical hand and a flexible touch sensing unit, wherein a flexible heating film and a liquid phase change material are arranged in the electric heating phase change actuator. According to the pneumatic type soft mechanical hand with the touch sensing function, the liquid phase change material is evaporated by electrifying and heating the flexible heating film, so that the pressure intensity of the cavity in the inner part of the electric heating phase change actuator is regulated, thus the bending state of the soft mechanical hand is dynamically adjusted so as to complete the grabbing operation; meanwhile, the flexible touch sensing unit is used for sensing time-varying information of grabbing force during the grabbing target process of the soft mechanical hand and taking the time-varying information as a feedback source for adjusting the bending state of the soft mechanical hand, so that closed-loop feedback control is formed; and the structure of the pneumatic type soft mechanical hand is flexible, a feasibility scheme is provided for safely and intelligently grabbing for the robot dexterous hand.

Disclosed is a carboxyl group-containing polyurethane (A) produced from a polyol (b) containing at least 10 mol% (relative to the total (100 mol%) of the polyol (b)) of a polyol (b1) which: (i) has a number-average molecular weight of 500 to 50,000; (ii) has 1 to 10 hydroxyl groups per molecule; and (iii) is one or a combination of two or more polyols selected from the group consisting of polybutadiene polyol, polyisoprene polyol, hydrogenated polybutadiene polyol and hydrogenated polyisoprene polyol. The carboxyl group-containing polyurethane (A) is suitable as materials of cured products, for example cured films, that are excellent in adhesion with substrates, low warpage, flexibility, plating resistance, soldering heat resistance and long-term reliability.

There is provided means of achieving the improvement of optical coupling efficiency between a surface receiving / emitting element and an optical transmission path with a simple structure and low cost. An optical element and a substrate having an optical waveguide layer and electric wiring are connected with each other through a lens having a Fresnel lens shape. A through via is provided in the lens, and the optical element and the electric wiring in the substrate are electrically connected with each other through the through via. Instead of the lens, a unit in which a lens is mounted inside an optical-element mounting substrate may be used.

The invention provides a brush type sealing-fingertip sealing combined seal. According to the brush type sealing-fingertip sealing combined seal, the total axial thickness generally does not exceed 2mm; the outer diameter roots of a brush wire bundle, a high-pressure fingertip sealing sheet and a low-pressure fingertip sealing sheet are fixed and clamped between a front baffle and a back baffle through a fusion welding process, so as to form a fusion welding area; the low-pressure fingertip sealing sheet is in direct contact with the back baffle, so as to commonly support an upstream sealing structure; the internal diameters of the brush wire bundle, the high-pressure fingertip sealing sheet and the low-pressure fingertip sealing sheet are in contact with the rotor or keep a very small gap. Compared with the existing brush type sealing-fingertip sealing structure, the structure of the brush type sealing-fingertip sealing combined seal has an obviously higher bearing capability under the same axial thickness condition; the flexibility is not obviously reduced; the leakage amount has no obvious variation or reduction, so that the brush type sealing-fingertip sealing combined seal is applicable to the fields with higher requirements on the bearing capability of the seal, the lightness and the miniaturization.

A minimally invasive, wireless ECoG microsystem is provided for chronic and stable neural recording. Wireless powering and readout are combined with a dual rectification power management circuitry to simultaneously power to and transmit a continuous stream of data from an implant with a micro ECoG array and an external reader. Area and power reduction techniques in the baseband and wireless subsystem result in over 10×IC area reduction with a simultaneous 3× improvement in power efficiency, enabling a minimally invasive platform for 64-channel recording. The low power consumption of the IC, together with the antenna integration strategy, enables remote powering at 3× below established safety limits, while the small size and flexibility of the implant minimizes the foreign body response.

The invention provides a preparation method for a carbon nano tube reinforced aluminum matrix composite material. The preparation method comprises the following steps that firstly, composite powder with carbon nano tubes evenly dispersed is obtained by adopting low-temperature ball milling; and then a composite blank is obtained after the powder is solidified by sleeve installing, air removing and hot isostatic pressing; and further, a bar material, or a sectional material or a forge piece product is formed by normal hot working methods such as squeezing and forging and pressing; and finally, heat treatment is conducted. According to the preparation method, the carbon nano tubes have good dispersity in an aluminum alloy matrix, the damage degree of reinforced bodies of the carbon nano tubes is small, the formed composite material has even microstructures and good interface bonding; and meanwhile, the composite material has high strength and plasticity, and is expected to be applied to the fields, such as aerospace and cars, which have strong needs for light-weight high-strength structural materials.

A heat-resistant shielded power cable for nuclear power stations comprises a combined cable core, three power cable cores are stranded to form the combined cable core, filler is arranged on the combined cable core, the periphery of the filler is sequentially wrapped by an isolating layer, a composite shielding layer, a flame-retardant tape, an oxygen barrier and an outer sheath, the filler is a low-smoke halogen-free flame-retardant polyolefin material, a polyester film is lapped to form the isolating layer, tinned copper wires are woven and lapped to form the inner layer of the composite shielding layer, an aluminium-plastic composite tape is overlapped to form the outer layer of the composite shielding layer, a glass fiber tape is lapped to form the flame-retardant tape, irradiation cross-linked low-smoke halogen-free flame-retardant polyethylene is extruded to form the wrapping oxygen barrier, and the outer sheath is made of ceramic fire-resistant silicon rubber; the three power cable cores respectively consist of a cable core conductor, an liner layer and an insulating layer which are arranged sequentially from the inside to the outside, wherein a synthetic mica tape is lappedto form the liner layer, and heat-resistant silicon rubber is extruded to form the insulating layer, and is then vulcanized. The heat-resistant shielded power cable has excellent heat resistance, shielding property and electric insulativity.

The invention discloses a preparation method of an isolated thermoplastic elastomer composite microporous electromagnetic shielding material. The preparation method specifically comprises the following steps: 1, adding MAX-phase ceramic powder into a hydrochloric acid / lithium fluoride mixed solution to obtain a dark green aqueous dispersion; 2, placing the thermoplastic elastomer beads in an autoclave for saturated absorption, then carrying out microcellular foaming on the completely saturated thermoplastic elastomer beads in a high-temperature foaming device to obtain thermoplastic elastomermicrocellular foamed beads with different foaming ratios; 3, immersing the thermoplastic elastomer microcellular foamed beads into the aqueous dispersion to obtain wrapped thermoplastic elastomer composite microcellular beads; and 4, putting the wrapped thermoplastic elastomer composite microporous beads into a mold, and pouring formic acid to dissolve the surfaces of the composite microporous beads, thereby obtaining the isolated thermoplastic elastomer composite microporous electromagnetic shielding material. The prepared electromagnetic shielding material has the advantages of light weight,low filling, high electromagnetic shielding efficiency and the like.