118results about How to "Highly ordered" patented technology

The present invention relates to compositions comprising rigid-rod polymers and carbon nanotubes. The compositions comprise dispersed carbon nanotubes aligned with rigid-rod polymers. The alignment of the nanotubes and polymers can be liquid crystalline. The rigid-rod polymers of this invention include, but are not limited to, polymers and copolymers comprising benzobisazole, pyridobisimidazole and benzamidazobenzo-phenanthroline repeat units. Dispersion of carbon nanotubes is achieved by in-situ polymerization in the presence of the carbon nanotubes, which may be either single-wall or multi-wall or a combination of both. The polymer compositions comprising carbon nanotubes may be spun into fibers or formed into films. The strength of the resulting fibers of the present invention is significantly greater than that of fibers without carbon nanotubes.

A system for repairing embedded memories on an integrated circuit is disclosed. The system comprises an external Built-In Self-repair Register (BISR) associated with every reparable memory on the circuit. Each BISR is configured to accept a serial input from a daisy chain connection and to generate a serial output to a daisy chain connection, so that a plurality of BISRs are connected in a daisy chain with a fuse box controller. The fuse box controller has no information as to the number, configuration or size of the embedded memories, but determines, upon power up, the length of the daisy chain. With this information, the fuse box controller may perform a corresponding number of serial shift operations to move repair data to and from the BISRs and into and out of a fuse box associated with the controller. Memories having a parallel repair interface are supported by a parallel address bus and enable control signal on the BISR, while those having a serial repair interface are supported by a parallel daisy chain path that may be selectively cycled to shift the contents of the BISR to an internal serial register in the memory. Preferably, each of the BISRs has an associated repair analysis facility having a parallel address bus and enable control signal by which fuse data may be dumped in parallel into the BISR and from there, either uploaded to the fuse box through the controller or downloaded into the memory to effect repairs. Advantageously, pre-designed circuit blocks may provide daisy chain inputs and access ports to effect the inventive system therealong or to permit the circuit block to be bypassed for testing purposes.

Normally, when stents are bent, inside the body of the stented patient, there is head-to-head collision between facing V-points on the inside of the bend. However, by alternating between two whole numbers the number of struts between successive connectors around the circumference of each of the stenting rings, the V-points are caused to veer circumferentially in opposite directions as they approach each other on the inside of the bend, so allowing them to pass by each other without collision, thereby allowing in the same stent both close packing of the ring stack, and an enhanced ability to tolerate severe bending, after placement in the body.

The preparation process of mesoporous spherical nano SiO2 particle includes mixing deionized water, CTAB, tetraethyl metasilicate, water solution or ammonia water solution of sodium hydroxide and alcohol solvent in certain proportion; heating reaction of the mixture inside PTFE reactor with protecting stainless steel casing and set in stove with blower; filtering of the reacted solution; washing and high temperature roasting to obtain mesoporous spherical nano SiO2 particle with homogeneous size. The process of the present invention is simple, low in cost and short in production period, and the prepared mesoporous spherical nano SiO2 particle is homogeneous in size, regular in appearance and ordered in pore channel.

Organic light-emitting diode with a layer arrangement which comprises an electrode, a counter electrode and an organic layer sequence arranged between the electrode and the counter electrode, where the organic layer sequence is arranged on a metal substrate and one or several organic transport layers containing in each case an admixture for increasing the electric conductivity and which are formed with at least one of the features from the following group of features: charge carrier transporting and charge carrier injecting.

The invention belongs to the field of photoelectric nano-material technologies, and more specifically relates to a method used for preparing TiO2/Cu2O nano heterojunction by composite mask method. The method comprises following steps: titanium sheets are subjected to secondary anodic oxidation so as to obtain TiO2 nanotube array thin films; the TiO2 nanotube array thin films are immersed in a compound solution of phenyltriethoxysilane and methanol, and the TiO2 nanotube array thin films with super-hydrophobicity are prepared by mask method and ultraviolet light treatment; and then Cu2O nanocrystals produced by the high-frequency impulse electrodeposition method are uniformly distributed on the surface and inner wall of the TiO2 nanotube array thin films to obtain the TiO2/Cu2O nano heterojunction. The photoelectric property of the TiO2/Cu2O nano heterojunction is higher than 6 to 14 times of the photoelectric property of the TiO2 nanotube array; the photoelectric property is excellent; and the TiO2/Cu2O nano heterojunction can be used as ideal materials for solar energy photoelectric conversion and solar energy efficient utilization.

An apparatus is provided for synthesis and collection of higher order chemical compounds from lower order precursors. The apparatus includes a first silent electric discharge reactor configured to synthesize an intermediate product (e.g., disilane) from a precursor chemical (e.g., monosilane). A second silent electric discharge reactor is connected downstream of the first reactor. This second reactor is configured to convert the intermediate product into the higher order chemical compound (e.g., trisilane). Multiple condensation traps are also connected to receive effluent from the second reactor, which will generally include the compound of interest as well as unreacted precursor and intermediate product. In the illustrated embodiment, a parallel second condensation traps is also included to shunt flow and continue collection while the chemical of interest is removed for purification. Moreover, parallel second condensation traps for the intermediate product and unreacted (or recombined) precursor allow continued collection while the contents of the first traps are recycled in the reactor(s).

A phase locked loop circuit in accordance with an embodiment implements a digital phase delay quantizer to replace the analog charge-pump and phase frequency detector in an analog PLL circuit. Therefore, the built-in loop filter can be a compact-sized, high order, high bandwidth, and high attenuation digital filter as well. The digital PLL circuit takes advantage of the deep sub-micron process technology which features high speed, high resolution, compact size, and low power.

The invention discloses a preparation method of three-dimensional ordered titanium dioxide photonic crystal microballoons covered by silver nanoparticles, and belongs to the technical field of biomedical research, environmental monitoring and clinical detection. According to the invention, a microfluidic device is adopted to prepare three-dimensional ordered titanium dioxide photonic crystal microballoons, and then a silver nitrate water solution is adopted to generate the silver nanoparticles through high temperature reduction of a hydrothermal reaction, the silver nanoparticles are loaded uniformly on the surfaces of the titanium dioxide photonic crystal microballoons, and three-dimensional ordered titanium dioxide photonic crystal microballoon structure covered by the silver nanoparticles is generated. The prepared product has the advantages that the structure is simple in regulation and control, is good in repeatability, and is uniform in surface hotspot distribution, so that the prepared three-dimensional ordered titanium dioxide photonic crystal microballoon structure covered by the silver nanoparticles is high in detection sensitivity, is simple in operation and is relatively good in signal reproducibility when the structure is used for surface raman enhanced spectrum substrate detection, and the detection limit range of the composite material in the surface raman enhanced detection field is further improved.

The invention relates to a preparation and purification method of bicaudal gemellus quaternary ammonium salt type cationic surfactant. The preparation method comprises the following steps in sequence: (1) metric acetonitrile is added into a dual-bottleneck distilling flask that is provided with a refluxing and condensing tube, and simultaneously, long-chain dialkyl methyl tertiary amine and relevant saturated dihalide are added thereof; (2) nitrogen is pumped for 10 to 20 minutes for deoxidizing; (3) a magnetic mixing reaction is carried through for 10 to 15 hours under the condition of 78 to 83 DEG C. after the reaction is finished, the solvent is removed by a decompression and distillation way to obtain yellowish colloid substance, then acetone is added, precipitated under low temperature, filtered and then washed twice by using the acetone, finally, white powdery solid is obtained by the vacuum drying. When the white powder is used for element analysis and hydrogen spectrum analysis of nuclear magnetic resonance, the analysis result is accordance with that of the target products. The method of the invention has cheap and easy available materials, moderate reaction condition, complete reaction and high reaction yield coefficient, which also can be carried through in common solvents, such as ethanol and so on.

The invention discloses a preparing process of ternary ferroelectric polymer film material, which comprises preparing a precursor solution by using dimethyl sulfoxide as solvent and ternary polymer P (VDF-TrFE-CFE) as solute, and adopting horizontal dipping method to create films and heat-treat films on LB devices, thereby obtaining polymer films which are characterized by controllable nanometer scale, ordered arrangement level and high crystallinity. The film material processed according to the method provides a platform for studying the origin of relaxation ferroelectricity. The P (VDF-TrFE-CFE) ternary ferroelectric polymer films have the properties for studying practical energy memory devices.

The invention relates to a preparation method of a Fe-based hydrotalcite-like compound, and the preparation method is as follows: first preparing a divalent metal M salt and trivalent Fe salt mixed solution, adding urea to the mixed solution, stirring until the salts are dissolved, and then reacting at 80-120 DEG C in a closed environment for 24 to 96 hours to obtain the Fe-based hydrotalcite-like compound; wherein metal M is selected from the group consisting of Ni, Mg or Co. According to the preparation method, the characteristic of uniform interior pH of the solution of an urea method, the high-crystallinity uniform-size hydrotalcite-like compound can be prepared, the preparation process of the Fe-based hydrotalcite-like compound can be simplified, the ratio of divalent and trivalent metallic element can be controllably adjusted in a certain range. The preparation method of the invention is one-step in reaction, low in cost, simple in operation, mild in reaction conditions, and in favor of further preparation of the Fe-based hydrotalcite-like compound into a thin film and a device.

A method for direct sampling of a plurality of radio bands, including a step of receiving a first radio band via a first interface and at least one additional radio band via at least one additional interface, the first radio band and the at least one additional radio band each being associated with different frequency ranges, and the first radio band or the at least one additional radio band being a DAB band. Furthermore, a selection signal is received via an interface, the selection signal indicating whether further processing of the first radio band and/or the at least one additional radio band takes place. Depending on the selection signal, the first radio band is sampled at a common sampling frequency and/or the at least one additional radio band is sampled at the common sampling frequency.

A highly effective firearm recoil absorbing combination is obtained by providing a shoulder mountable assembly containing a viscoelastomeric thermoset polymerizate pad possessing excellent cushioning and rebounding characteristics along with sufficient surface tack to cohesively steady a firing firearm against the pad. The assembly may securely affixed to the shoulder region of a garment or detachably mountable thereto.

The invention relates to a preparation method for a nano SiO2 lattice on a 316L stainless steel surface. The preparation method comprises the following steps: carrying out anodic oxidization, in ethylene glycol electrolyte of perchloric acid, on 316L stainless steel, thereby obtaining 316L stainless steel with a nano hole array on surface; adding 2mol/L nitric acid into deionized water to obtain a mixture I, stirring the mixture I, adding the mixture I into a silicon source while stirring, and carrying out stirring reaction on the mixture I, thereby obtaining SiO2 sol; dropwise adding the SiO2 sol into the 316L stainless steel with the nano hole array on surface at 5-40 DEG C to obtain a mixture II, cleaning the mixture II, drying the mixture II, and roasting the mixture II under a protective atmosphere to obtain the nano SiO2 lattice on the 316 stainless steel surface. The preparation method is simple and effective, environmentally-friendly and low in cost; and obtained SiO2 nano particles are uniform in particle diameter, and are ordered in distribution; and the nano SiO2 lattice is regular and ordered in structure and high in density.

A matrix shim coil apparatus includes a plurality of coils configured to provide high order shimming. Each coil has a figure eight shape and a first loop and a second loop. In another embodiment, each coil is further folded along an axis of the coil creating a folded coil with an upper portion and a lower portion.