81results about How to "Easily ionized" patented technology

A method for forming a three-dimensional article through successive fusion of parts of a metal powder bed is provided, comprising the steps of: distributing a first metal powder layer on a work table inside a build chamber, directing at least one high energy beam from at least one high energy beam source over the work table causing the first metal powder layer to fuse in selected locations, distributing a second metal powder layer on the work table, directing at least one high energy beam over the work table causing the second metal powder layer to fuse in selected locations, introducing a first supplementary gas into the build chamber, which first supplementary gas comprising hydrogen, is capable of reacting chemically with or being absorbed by a finished three-dimensional article, and releasing a predefined concentration of the gas which had reacted chemically with or being absorbed by the finished three dimensional article.

A method comprising the steps of: distributing a titanium alloy or pure titanium powder layer on a work table inside a vacuum chamber, directing at least one electron beam from at least one electron beam source over the work table causing the powder layer to fuse in selected locations, distributing a second powder layer on the work table of a titanium alloy or pure titanium inside the build chamber, directing the at least one electron beam over the work table causing the second powder layer to fuse in selected locations, and releasing a predefined concentration of the gas from the metal powder into the vacuum chamber when at least one of heating or fusing the metal powder layer, wherein at least one gas comprising hydrogen is absorbed into or chemically bonded to the titanium or titanium alloy powder to a concentration of 0.01-0.5% by weight of the hydrogen.

A thruster (1) has a main chamber (6) defined within a tube (2). The tube has a longitudinal axis which defines an axis (4) of thrust; an injector (8) injects ionizable gas within the tube, at one end of the main chamber. An ionizer (124) is adapted to ionize the injected gas within the main chamber (6). A first magnetic field generator (12, 14) and an electromagnetic field generator (18) are adapted to generate a magnetized ponderomotive accelerating field downstream of said ionizer (124) along the direction of thrust on said axis (4),

The thruster (1) ionizes the gas, and subsequently accelerates both electrons and ions by the magnetized ponderomotive force.

The invention belongs to the technical field of plasma, and provides a plasma jet device with a suspension electrode. The plasma jet device comprises a medium pipe, an air port, the suspension electrode, a supporting structure, a high-voltage electrode and a work power supply, wherein two ends of the medium pipe are open, the air port is sleeved at the inlet end of the medium pipe, the suspension electrode is suspended inside the medium pipe, the supporting structure is used for supporting the suspension electrode, the high-voltage electrode is wrapped at the outlet end of the medium pipe, and the work power supply is connected with the high-voltage electrode. When the plasma jet device works, work air flows into the plasma jet device through the air port and flows out through the outlet end of the medium pipe, and the plasma jet with high-density active particles is generated. According to the plasma jet device, the conical degree of the head of a needle electrode is high, a strong electric field can be formed, ionization occurs more easily, and therefore breakdown voltage can be effectively reduced, and the active particles can be ionized more easily. The problem that the active particles in the prior art are low in density is resolved, the area of the cross section of the plasma can also be enlarged, and therefore the processing area can be enlarged in material processing and biological application.

The invention relates to the acquisition of mass spectra of complex protein mixtures, often called protein profiles, for example to search for biomarkers which indicate stress situations, or to identify microbes. Up to now protein profiles have been acquired using ionization by matrix-assisted laser desorption with high detection sensitivity in linear time-of-flight mass spectrometers, but these display very poor mass resolution and a very poor reproducibility of the mass values. The invention provides methods which produce surprisingly similar mass spectra, but with far higher mass resolution and mass accuracy. Ionization takes place outside the vacuum at ambient pressure, preferably by means of laser desorption and CI post-ionization. Analysis of the ions takes place in a high-resolution mass spectrometer, for example a reflector time-of-flight mass spectrometer with orthogonal ion injection.

The invention discloses a multi-channel optical imaging laser ionization source. The ionization source comprises a light source, a light permeating substrate and an optical detection system. The light permeating substrate is arranged on a light path of the optical detection system. A laser emitted by the light source is reflected by a reflecting mirror to form reflected light, and the reflected light is focused through a focus objective lens and then irradiates the light permeating substrate. Under the premises that sampling time is not prolonged and the character of a sample is changed, the multi-channel optical imaging laser ionization source can be used in a vacuum environment and meanwhile can carry out ionization under the atmosphere or sub-vacuum condition, and accordingly the using range of the ionization source is enlarged. By means of a matrix, the sample can be ionized more easily through the excitation of the light source, and accordingly better sensitivity and a better resolution ratio can be obtained. Due to the fact that the light source irradiates from the back face of the substrate, the sample can be ionized by utilizing a small laser spot, and therefore the method has the ultrahigh space resolution ratio.

A biological sample solution is ionized by electrospray and the sample solution is irradiated with an infrared laser beam to dissociate biological macromolecules into the constituents thereof. As a result, only non-covalent bonds of the biological macromolecules can be selectively severed and analyzed.

The invention discloses a surface coupling induced ionization technology, which comprises any one of the following steps of: (1) feeding a first beam of electromagnetic wave into a material through afree space or a waveguide to excite a surface plasma wave; introducing target molecules to be ionized into the surface of the material, coupling electrons of the target molecules with surface plasmonpolaritons on the material by controlling interaction, and inducing the target molecules to be ionized; (2) synchronously passing through a free space or a waveguide, and then feeding a second beam and subsequent electromagnetic waves into an ionization region of target molecules on the surface of the material, so that the ionized target molecules are absorbed, and the ionization degree of the target molecules is improved; and (3) releasing the target molecules in the form of bulk phase plasmas to realize surface coupling induced ionization. The invention also discloses a plasma device.

The present invention provides a doping technique that forms a stable amorphous silicon film and a stable polycrystalline silicon film at a low temperature and simultaneously that imparts conductivity in an atmospheric pressure environment. A method for producing a compound containing a bond between different elements belonging to Group 4 to Group 15 of the periodic table, the method included: applying, at a low frequency and atmospheric pressure, high voltage to an inside of an electric discharge tube obtained by attaching high-voltage electrodes to a metal tube or an insulator tube or between flat plate electrodes while passing an introduction gas, so as to convert molecules present in the electric discharge tube or between the flat plate electrodes into a plasma; and applying the plasma to substances to be irradiated, the substances to be irradiated being two or more elementary substances or compounds.

The invention provides an atmospheric dielectric barrier discharge plasma sterilization device. The device comprises sensors (a temperature sensor, an air pressure sensor and a wind power sensor), an analysis circuit, a power supply control circuit, a plasma generation device and the like. The device adopts the principles of dielectric barrier discharge, preionization and self-inductance, so that the needed power supply voltage can be effectively reduced, the device volume is decreased, and the actual use of the sterilization device is convenient. And above all, breakdown voltage is reduced to more easily ionize gas, that is, plasma is more easily generated under the atmospheric condition, so that the density of the plasma is increased, and the sterilization efficiency of the device is improved. As thin needle tubing is adopted, the jet speed of the plasma is quickened, and the sterilization range of the plasma sterilization device is improved. In addition, the appearance design is more humanized, so that more convenience is brought to the actual operation; and for materials, heat-resistant and insulative engineering plastics with antibacterial effect after the plasma injection treatment are adopted.

The invention discloses a fresh keeping box which comprises a box body, a circuit case arranged in the box body, and a plurality of partition plates arranged horizontally. The fresh keeping box is characterized in that the circuit case is internally provided with a fresh keeping circuit and a power supply circuit; a plurality of vent holes are formed in the partition plates; a fan connected with the power supply circuit is arranged in a position, close to the box body, of each partition plate; and the fresh keeping circuit comprises a second transformer, a rectification and voltage stabilizing circuit, a multivibrator, an ultrasonic frequency oscillator, a first transformer and a plate electrode that are sequentially connected with an alternating current source supplied by commercial power. The fresh keeping box adopts ozone for fresh keeping.

The invention belongs to the field of metal materials, and relates to a high-tensile-strength stainless steel electrode with a complex alloy coating and a preparation method of the high-tensile-strength stainless steel electrode with the complex alloy coating. The stainless steel electrode has the high butt joint tensile strength and is formed by a welding stick and the coating, the welding stick is wrapped by the coating, sodium water glass and potash water glass serve as binding materials, and the coating is bonded to the periphery of the welding stick. The preparation method is simple in process, low in production cost and suitable for industrial production.

The invention discloses an efficient concrete water-reducing agent and a preparation method thereof, and belongs to the technical field of concrete additives. Acrylic acid is used as a raw material, and polyethylene glycol monomethyl ether is added. Through an esterification reaction, a macromonomer is obtained; and citric acid is added for modification to reduce formation of calcium silicate hydrated gel so as to obtain higher water-reducing rate. L-aspartic acid is used as a raw material, and carboxyl anions are formed. Then, the water-reducing agent still can be greatly dispersed under thecondition of hard water to play a water-reducing effect. By introducing triethanolamine, solubility of concrete particle surface is raised, and water-reducing efficiency is enhanced. Problems of existing water-reducing agents, such as poor hard water resistance and low water-reducing efficiency are solved.

The invention discloses a fluorine removal device and process for fluorine-containing wastewater, belongs to the technical field of industrial wastewater treatment, and solves the problem that: in the prior art, fluorine removal processes and fluorine removal devices used by the processes for fluorine-containing wastewater easily cause other ions to exceed the standard. The device comprises a buffer tank, the buffer tank is connected to a wastewater pump, the wastewater pump is connected with a first-stage reaction tank, the first-stage reaction tank is connected with a second-stage reaction tank, the second-stage reaction tank is connected with a third-stage reaction tank, the third-stage reaction tank is connected with a settling tank, the bottom of the settling tank is connected with a sludge pump, the settling tank is further connected with a dispensing tank, the dispensing tank is connected with a calcium salt lifting pump, and the calcium salt lifting pump is connected with the first-stage reaction tank. The device is used for safe and low-cost fluorine removal of the fluorine-containing wastewater, the cost is reduced by using the calcium sulfate, and chloride ions are prevented from exceeding the standard.