164results about How to "Increase polarizability" patented technology

The invention relates to novel fluorene derivatives, which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the fluorene derivatives, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

The invention relates to novel calamitic mesogenic compounds which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the compounds, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

The invention relates to an embedded NV-center diamond based magnetic field metering device. A nanometer diamond particle with a negatively charged nitrogen-vacancy(NV)-center is adopted as a sensitive element. Phase-shift micro-nano FBG (Fiber Bragg Grating) is adopted to be a sample cavity. Laser and microwave are utilized for controlling NV-center electronic energy level and magnetic field metering is realized through detecting the fluorescent intensity of the NV-center. The device provided by the invention has comparatively high spatial resolution and comparatively good stability and also has advantages of being small in size, low in cost and being compatible to room temperature operation. The device can perform metering on the surface of a to-be-meter object or in micro holes or gaps and is a magnetic field metering device based on solid atom spin. The device can be used for satisfying requirements for weak magnetic field metering with low cost and high spatial resolution in different field in the future.

The invention discloses a metal organic framework material as well as a preparation method and application thereof. The chemical molecular formula of the metal organic framework material is {[M3(P)3(Q)2].5DMF.2H2O}n, wherein M is one or more metal cations selected from the group consisting of Fe<2+>, Co<2+>, Ni<2+>, Cu<2+>, and Zn<2+>; P is an organic ligand 2',3'-dimethyl-p-terphenyl-4,4''-dicarboxylic acid; Q is one or more auxiliary organic ligands selected from the group consisting of 4,4'-dipyridyl, 2-phenylpyridyl, 4-phenylpyridinium, and 1,4-di(p-pyridyl)benzene; DMF is (i)N, N'(/i)-dimethylformamide. The metal organic framework material provided by the invention has good water resistance and thermal stability resistance; due to the presence of 2', 3'-dimethyl group, the process ofan interpenetrating network is restricted to a certain degree, and the excessive orifices in the metal organic framework material are narrowed.

The invention provides a nuclear magnetic resonance gyroscope based on wide spectrum laser pumping. The nuclear magnetic resonance gyroscope comprises a light path detection part, a pumping light path part, a polarized light path part, a photoelectric detection part, a signal demodulation circuit, an atomic gas chamber, a heating body, a magnetic compensation coil, a magnetic shielding body, an aluminum alloy shell, a laser drive power supply, a temperature control circuit and a magnetic field drive circuit. According to the nuclear magnetic resonance gyroscope, alkali metals are polarized by adopting broadband laser pumping, the line width of broadband laser is more than a superfine energy level splitting gap, and the polarizability of a working medium can be effectively improved. Moreover, an external magnetic field is attenuated by adopting the magnetic shielding body, current is applied to generate a magnetic field in the magnetic compensation coil so as to compensate the residual magnetic field, so that a disturbing magnetic field is effectively isolated. Furthermore, detected light is divided into two paths for performing detection and reception, a gyro signal can be acquired by virtue of difference processing, and gyro common-mode noise can be effectively suppressed.

The invention discloses road silicate cement clinker on the basis of industrial waste residues and a method for preparing the road silicate cement clinker. The road silicate cement clinker comprises nickel slag, calcium carbide residues, zirconium-containing silica residues, bauxite tailing, desulfurization gypsum and mineralizers. The method includes mixing, grinding and homogenizing the nickel slag, the calcium carbide residues, the zirconium-containing silica residues, the bauxite tailing, the desulfurization gypsum and the mineralizers to obtain cement raw materials; preheating the cementraw materials, then calcining the cement raw materials under the condition of the temperature of 1280-1350 DEG C for 30-35 min and then carrying out cooling to obtain the road silicate cement clinker.The road silicate cement clinker and the method have the advantages that the 28 d compressive strength of the road silicate cement clinker can reach 63.9-75.2 MPa, the strength grade of the road silicate cement clinker can reach 62.5 grade, the 28 d breaking strength of the road silicate cement clinker can reach 9.8-18.2 MPa, the 28 d mortar abrasion loss of the road silicate cement clinker is lower than 2.5 kg/m<2>, cement is high in stability, and the road silicate cement clinker is high in abrasion resistance and excellent in work performance; the method is simple, complicated working procedures can be omitted, and the road silicate cement clinker and the method are low in cost.

The invention provides a thianthrene compound with a structure represented by the formula (I) in the description. Ar1 and Ar2 are independently selected from any one of a single bond, substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthryl, substituted or unsubstituted phenanthryl, substituted or unsubstituted acenaphthylene and substitutedor unsubstituted heteroaromatic ring; m is 0 or 1; D1 and D2 are independently selected from aryl or heteroaryl, and Ar2 and Ar3 are independently selected from aryl or heteroaryl. The thianthrene compound contains sulfur element and has high polarizability, and a material with high refractive index is obtained; the sulfur atom has good polarizability and high electron richness, so that the fusedring organic compound material has good charge transport properties and electron donating properties and is quite applicable as a capping layer (cathode cap layer, CPL) material.

The invention relates to lead-free piezoelectric ceramic and a preparation method thereof. The problems that the production technology is complex, sintering is difficult, piezoelectric ceramic is poor in performance and requirements in actual application are not met are solved. The method includes the steps that BaCO3 powder, ZrO2 powder and TiO2 powder are contained in a ball milling tank, ethyl alcohol is added to be ground, dried, tabletted and pre-sintered to synthesize BaZr0.055Ti0.945O3; ethyl alcohol is added to Bi2O3, Na2CO3, TiO2, MnO2 and BaZr0.055Ti0.945O3 to be ball-milled and dried, an adhesive is added, compaction and plastic removal are conducted, the mixture is buried with powder to be sintered, silver paste coating and forging are conducted, and a silver electrode is formed on the surface; then the product is placed in silicon oil, the electric field is polarized, and the lead-free piezoelectric ceramic material is obtained. The Mn-codoped Bi0.5Na0.5TiO3-BaZr0.055Ti0.945O3 lead-free piezoelectric ceramic is designed and synthesized for the first time, the coercive field and leakage current of piezoelectric ceramic are effectively reduced, polarizability is improved, performance is good, the method is simple, and production and preparation are easy.

To provide a magnetic memory cell that is capable of efficiently changing the magnetization directions of magneto-sensitive layers. A magnetic memory cell comprises an annular magnetic layer 4a through which extends a write bit line 5a that generates a magnetic field, and a TMR film S20a configured so as to include: a first magneto-sensitive layer 14a, a magnetization direction of which is changed by the magnetic field in the annular magnetic layer 4a; and a magnetoresistive effect revealing body 20a disposed on a surface of the first magneto-sensitive layer 14a so that an electric current flows in a direction perpendicular to a laminating surface of the laminate, and the first magneto-sensitive layer 14a has a thickness thereof set in a range of not less than 0.5 nm to not more than 40 nm.

The invention provides a benzoheterocyclic compound. The benzoheterocyclic compound has a structure represented by formula (I); and in the formula, R1 is any one of hydrogen atom, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an anthryl group and a phenanthryl group, Y1 and Y2 are respectively independently selected from a carbon atom, an oxygen atom and a sulfur atom, one of the Y1 and Y2 is the carbon atom, Ar1 is a single-bond or monosubstituted or unsubstituted group of any one of a phenyl group, a naphthyl group, a fluorenyl group, a phenanthryl group, anacenaphthenyl group and an aromatic heterocyclic ring, m is 0 or 1, D1 and D2 are respectively independently selected from an aryl group or a heteroaryl group, and Ar2 and Ar3 are respectively independently selected from an aryl group and a heteroaryl group. The benzoheterocyclic compound can be used as a material for a capping layer (CPL) of an OLED device to obtain a high light extraction efficiency and avoid the problem of reduction of the color purity of the blue light-emitting device.

The invention relates to an Mg secondary cell, comprising vanadium oxide nanotube or molybdenum oxide active material as anode, Mg as cathode, Mg(AlBu2Cl2)2 as electrolyte and diaphragm celgard 2300, where the nanotube comprises metallic cation-doped vanadium oxide nanotube, the doping metallic cations account for 10 mol%-30 mol% of the vanadium oxide, and the doping metallic cations are copper or silver ions. And it has higher initial discharge specific capacity and powerful discharge property. And it has advantages of low price and good safety and as a power battery, has great application and development prospects.

The invention provides a method for preparing a (1-vinyl-3-ethylimidazole borate)polyion liquid/ polyvinyl alcohol polymer composite material. The method comprises the following steps: synthesizing an ethylimidazole functional ion liquid monomer; performing in situ polymerization on the ethylimidazole functional ion liquid monomer in a polyvinyl alcohol solution; introducing the polyion liquid into crosslinked polyvinyl alcohol in order to form a network-like composite material. Large anion-cation groups exist in the polyion liquid structure, have excellent polarization density and polarization rate, and serve as a very good microwave absorbing medium, so that the polymer composite material has a very good shape memory effect under the driving actions of microwaves. Compared with the convention shape memory polymer for realizing optical, electrical and magnetic remote responses by means of adding inorganic fillers under current research, the polymer composite material disclosed by the invention is totally based on a polymer, and is a non-directly-contact microwave-driven shape memory polymer, so that the problems of poor compatibility, non-uniform heating and the like caused by filling of the polymer with the inorganic fillers can be solved.

The present invention relates to a nano-positive electrode material of lithium cell and preparation thereof. And the material comprising Lithium iron phosphate as substrate, conductive doping ion and voltage-boosting doping ion, have the general chemical formula: (Li_x[M_1-x])(Fe_y[N_1-y])PO₄, wherein: x=0.9˜0.96; y=0.93˜0.97; M represents conductive doping ion; N represents voltage-boosting doping ion. The material is prepared by solid phase reaction, of which the process for preparation includes: all raw materials is mixed homogeneously—milled into powder—pellet-formed—isothermally sintered for 2˜3 hours under 200˜400° C. in inner atmosphere—cooled—milled into powder—pellet-formed—isothermally sintered for 15˜20 hours under 500˜780° C. in inner atmosphere—cooled—milled into powder—airflow grinded and classified. The method is of low production cost, easy to operate, environment friendly and of high yield. The nano-positive electrode material of lithium cell prepared by the solid phase reaction, wherein the conductivity is higher than 10⁻²S/cm, and the actual discharge capacity>250 mAh/g. And it can be fast charged/discharged in high power. It is provided with the characteristic of low production cost, easy operation method, safety and environment friendly. And it is applicable to small polymer, gel and liquid lithium cell, especially to power cell with high power.

The invention discloses a preparation method for an integral molecular sieve adsorbent for deep gas dehydration. The problem of difficulty of a molecular sieve adsorbent in meeting a deep gas dehydration requirement is solved. The preparation method comprises the following steps: (1) uniformly mixing an active molecular sieve, aluminic acid, an extrusion assistant, a drying additive and inorganic fibers; (2) mixing mixed dry powder and water, and kneading a green body; (3) aging the green body to obtain a prepared body; (4) performing compression molding on the prepared body to obtain a cellular blank; (5) shaping, drying and aging the cellular blank; (6) performing secondary drying on the shaped, dried and aged cellular blank; (7) performing calcination and furnace cooling on the secondarily dried cellular blank to obtain the adsorbent. The adsorbent has the characteristics of strong compressive strength, high abrasion resistance, low gas passing pressure drop and high dehydration depth, and is low in cost and suitable for popularization and application, and the preparation method is simple.

According to the present invention, a thin film made of a wurtzite structure compound is manufactured by a reactive sputtering using a metal material as a target, and a nitrogen gas or an oxygen gas as a reactive gas. By optimizing film-forming conditions when manufacturing the film, it is possible to obtain a wurtzite thin film whose polarization directions of crystal grains are aligned in a uniform direction. According to a laminate of the present invention, a first wurtzite crystalline layer made of a wurtzite crystalline structure compound is formed in advance between a substrate and a functional material layer that is a ground. Thus, it is possible to improve the crystallinity and crystalline orientation of a second wurtzite crystalline layer formed on the functional material layer.

The invention discloses an oil smoke purifier with a honeycomb structure. The oil smoke purifier comprises an insulating box body, wherein a positive electrode lead screw and a negative electrode lead screw are erected between the side walls of the insulating box body, a positive electrode plate and a negative electrode plate are respectively arranged on the positive electrode lead screw and the negative electrode lead screw and are in alternate arrangement, a position under the positive electrode plate and the negative electrode plate on the insulating box body is provided with a positive electrode tube, a negative electrode rod penetrates through the positive electrode tube, the positive electrode tube is an orthohexagonal tube body, one end of the side surface near the edge side, of the positive electrode tube is provided with a bulge, the other end of the positive electrode tube is provided with a clamp groove matched with the bulge, and the positive electrode tube is buckled through the bulge and the clamp groove. The generated polarization electric field is extremely uniform, the full polarization of oil smoke particles is ensured, meanwhile, the time for allowing the oil smoke particles to completely pass through the polarization electric field is prolonged, no gap and no dead corner exist, the oil smoke is enabled to completely pass through the positive electrode tube, the polarization rate of the oil smoke particles is improved, and the oil smoke purifier has the characteristics that the structure is simple and compact, the stability and the reliability are good, the installation is convenient, and the cost is low.

This spin device includes a semiconductor layer 3 formed of single crystalline Si, a first tunnel insulating layer T1 formed on a surface of the semiconductor layer 3, and a first ferromagnetic metal layer 1 formed on the first tunnel insulating layer T1. Area density of dangling bonds in an interface between the semiconductor layer 3 and the first tunnel insulating layer T1 is 3×10¹⁴/cm² or less. In this case, a polarization rate can be greatly improved.