47results about How to "Good structural consistency" patented technology

An MEMS (micro-electro-mechanical system) acoustic sensor based on graphene mainly structurally comprises an upper structure, an understructure and graphene. Sound collecting cavities, gap cavities, through hole plates, pickup holes, upper metal layers, upper insulating layers, upper metal connecting positions and an upper bonding metal layer are produced on an upper structure layer; through hole plates, gas cavities, damping holes, damping cavities, under metal layers, under insulating layers, under metal connecting positions, a graphene connecting position, an under metal bonding layer, upper metal pads, under metal pads, upper metal connecting holes, under connecting holes and a graphene connecting hole are produced on an understructure layer; and a graphene layer is clamped between the upper insulating layers and the under insulating layers. Graphene materials with thickness of a single carbon atom layer have remarkable mechanical characteristics and electrical characteristics, so that sensitivity and resolution of the acoustic sensor with graphene serving as a vibrating diaphragm are higher and acoustic detection data of the acoustic sensor are detailed, accurate and reliable.

A concrete steel composite beam is formed by: an asymmetric H sectional steel, which has some notches, at least one, spaced at certain distance on its web, a pair of C sectional steels connected with the lower side of the said H sectional steel to form a space to fill concrete in, a cover plate supported by the tops of the C sectional steels with one, at least, lateral reinforcing rib through the said notches vertically, and another cover plate to form a concrete board with preset thickness by filling concrete to bury the top side of the H sectional steel.

The invention discloses a preparation method of carbon-coated cobaltous sulfide / cobaltous octosulfide nano particles having a multistage porous structure and an application thereof. Based on a solvothermal method, PAN is employed as a carbon source and is taken as a carrier of an active substance, the carbon-coated CoS / Co9S8 nano particles having a specific structure is obtained by adding a certain mass of sulfur powder through calcining and sulfuration under protection atmosphere, and the carbon-coated CoS / Co9S8 nano particles have the multistage porous structure. The multistage porous structure constructed by the carbon-coated active substance particles is in favor of full contacting of an electrolyte and an active substance, provides more reaction active sites, shortens diffusion distance of lithium ions, increases the multiplying power performance of a battery, alleviates volume expansion during a lithium insertion process, prevents powdering and shedding of the active substance, and greatly increases the cycle life of the battery. The preparation method has the advantages of easy operation, and controllable reaction condition, and is easy for an amplification experiment.

The invention relates to a method for gluing a hair elastic ring. The method comprises the following steps of: 1) rinsing the elastic band provided with an ornament layer on the outer layer of a rubber band by using 5 to 10 weight percent aqueous solution of sodium chloride, then cleaning the rinsed elastic band by using 1 to 5 weight percent polyvinyl alcohol or by using 5 to 25 weight percent of triethanolamine, and drying the cleaned elastic band at room temperature; 2) cutting the elastic band with an elastic material thermal cutting machine, performing a circle of ironing on a cutting position for the elastic band by using a heating cutter at the temperature of 200 to 300 DEG C in a twist way, leaving a pressing mark on the ornament layer of the elastic band and performing cutting atthe pressing mark by using a cutter; and 3) wetting two cross sections of the elastic band by spraying 60 to 85 weight percent alcohol, coating glue containing alpha-ethyl cyanoacrylate on the two cross sections and jointing and bonding the two cross sections to form the hair elastic ring. The method for gluing the hair elastic ring discards the conventional way for connecting the elastic band bya metal connecting piece, so that the hair elastic ring becomes a hair ornament which is safe and environmentally-friendly and difficult to be broken and has nice appearance.

The invention provides a microwave device surface processing device capable of restraining secondary electron emission and a microwave device surface processing method capable of restraining secondary electron emission. The device consists of a laser output module, a micro lens, a movable table and a control module, wherein the control module outputs control signals to the laser output module and the movable table, so as to control the laser output power, the laser output interval time, the movement distance of the movable table and the movement time of the movable table; by virtue of a small-area deep hole array continuous moving and filling method, laser etching of a centimeter-scale large-area deep hole array structure on the surface of a microwave device is finished. The microwave device surface structure processed by the device and the method is of a rectangular uniformly-spaced or triangular uniformly-spaced micronano deep hole array, so that the secondary electron emission coefficient of the surface of the microwave device can be effectively reduced. The device and the method are automatic in processing, simple in process and high in efficiency, and can be used for performing processing treatment on the surfaces of parts such as gold or plated gold; the surface performance of the processed microwave device has long-term stability, and the processed microwave device is applicable to ground and aerospace environments.

The invention discloses a high-sensitivity micro-nano giant piezoresistive rainfall sensor and a preparation method and a measurement structure thereof. The sensor comprises a sensor array which includes multiple silicon aluminum heterojunction sensing units, power supply electrode pairs, signal detection lead-out electrode pairs and reference lead-out electrode pairs. Each sensing unit includes two silicon aluminum heterojunction pressure sensitive structures, a bottom silicon layer, an insulating silicon dioxide layer and a top silicon layer. The two silicon aluminum heterojunctions which are consistent in structure and property are arranged at the two ends of the sensor in parallel. The side parts of the silicon aluminum heterojunctions are provided with an excitation electrode and a detection electrode. When the sensor is used, mechanical stress of the sensor chip is formed through rainfall pressure and the size of the contact potential barriers of the silicon aluminum heterojunctions is changed so that the giant piezoresistive effect is realized; and the change of the volt-ampere properties of the silicon aluminum heterojunctions acting as a reference part is not caused by stress and the silicon aluminum heterojunctions can act as a differential reference circuit to eliminate the influence of temperature. The sensor is high in measurement sensitivity and accurate and suitable for the occasion of high-precision rainfall measurement.