39 results about "Electron loss" patented technology

An electron generating device extracts electrons, through an electron sheath, from plasma produced using RF fields. The electron sheath is located near a grounded ring at one end of a negatively biased conducting surface, which is normally a cylinder. Extracted electrons pass through the grounded ring in the presence of a steady state axial magnetic field. Sufficiently large magnetic fields and/or RF power into the plasma allow for helicon plasma generation. The ion loss area is sufficiently large compared to the electron loss area to allow for total non-ambipolar extraction of all electrons leaving the plasma. Voids in the negatively-biased conducting surface allow the time-varying magnetic fields provided by the antenna to inductively couple to the plasma within the conducting surface. The conducting surface acts as a Faraday shield, which reduces any time-varying electric fields from entering the conductive surface, i.e. blocks capacitive coupling between the antenna and the plasma.

The invention discloses a photovoltaic material with a thin-layer perovskite structure and a preparation method for the photovoltaic material, belongs to the field of the photovoltaic material, and particularly belongs to the field of the photovoltaic material with the perovskite structure. An inducer is added in a synthetic process of a crystal with a perovskite structure at a proper temperature and pH value to enable the original crystal with a cubic crystal system perovskite structure to distort so as to obtain a crystal with a thin-layer stacked perovskite structure. The preparation method provided by the invention is simple in process and easy to operate; the obtained crystal with the thin-layer stacked perovskite structure is high in electron transmission efficiency; and when the photovoltaic material with the thin-layer perovskite structure is applied to a solar cell, the solar cell is high in photoelectric conversion rate; and in addition, the photovoltaic material is low in electron loss and high in transmission efficiency.

A method and system are disclosed for improving characteristic peak signals in electron energy loss spectroscopy (EELS) and energy dispersive x-ray spectroscopy (EDS) measurements of crystalline materials. A beam scanning protocol is applied which varies the inclination, azimuthal angle, or a combination thereof of the incident beam while spectroscopic data is acquired. The method and system may be applied to compositional mapping.

Adjustable resolution electron energy loss spectroscopy methods and apparatus are disclosed herein. An example method includes operating an electron microscope in a first state, the first state including operating a source of the electron microscope at a first temperature, obtaining, by the electron microscope, a first EELS spectrum of a sample at a first resolution, the first resolution based on the first temperature, operating the electron microscope in a second state, the second state including operating the source of the electron microscope at a second temperature, the second temperature different than the first temperature, and obtaining, by the electron microscope, a second EELS spectrum of the sample at a second resolution, the second resolution based on the second temperature, wherein the second resolution is different than the first resolution.

The invention relates to low-delay-pulse, low-crosstalk and high-collection-efficiency micro-channel plate. The micro-channel plate comprises a two-dimensional array composed of a plurality of parallel channels. An input electrode layer is plated on the upper end surface of the two-dimensional array. An output electrode layer is plated on the lower end surface of the two-dimensional array. The improvement of the invention is embodied as an input port arranged in the input electrode layer and an output port arranged in the output electrode layer. The input port is communicated with the upper ends of the channels, and the output port is communicated with the lower ends of the channels. The input port is gradually reduced from top to bottom, so that the opening area of the channels of the micro-channel plate is larger than 90%. The surface of the input electrode is covered with a thin film with a high secondary electron emission coefficient. According to the micro-channel plate, the opening area of micro-channels is large, so that the probability of electrons entering the channels is increased. The collecting efficiency is improved. The thin film made of the high-secondary electron emission material and covered on the surface of the electrode can reduce the probability of electron loss falling on the surface of the electrode. As a result, the collecting efficiency is further improved.

A process for fabricating non-volatile memory by tilt-angle ion implantation comprises essentially the steps of implanting sideling within a nitride dielectric layer heterogeneous elements such as, for example, Ge, Si, N2, O2, and the like, for forming traps capable of capturing more electrons within the nitride dielectric layer such that electrons can be prevented from binding together as the operation time increased; etching off both ends of the original upper and underlying oxide layers to reduce the structural destruction caused by the implantation of heterogeneous elements; and finally, depositing an oxide gate interstitial wall to eradicate electron loss and hence promote the reliability of the device.

The invention relates to a transmission charged particle microscope comprising a charged particle beam source for emitting a charged particle beam, a sample holder for holding a sample, an illuminator for directing the charged particle beam emitted from the charged particle beam source onto the sample, and a control unit for controlling operations of the transmission charged particle microscope. As defined herein, the transmission charged particle microscope is arranged for operating in at least two modes that substantially yield a first magnification whilst keeping said diffraction pattern substantially in focus. Said at least two modes comprise a first mode having first settings of a final projector lens of a projecting system; and a second mode having second settings of said final projector lens.

A method and apparatus are disclosed for improving space charge neutralization adjacent a magnet of an ion implanter by confining the electrons inside a magnetic region thereof to reduce electron losses and therefore improve the transport efficiency of a low energy beam. A magnetic pole member for a magnet of an ion implanter is provided that includes an outer surface having a plurality of magnetic field concentration members that form magnetic field concentrations adjacent the magnetic pole member. Electrons that encounter this increased magnetic field are repelled back along the same magnetic field line rather than allowed to escape. An analyzer magnet and ion implanter including the magnet pole are also provided so that a method of improving low energy ion beam space charge neutralization in an ion implanter is realized.

The invention belongs to the technical field of wave power generation, in particular to a wave energy power generation device. Aiming at the technical problem that wave energy power generation devicesare in contact with seawater and are liable to be corroded, according to the following scheme, the wave energy power generation device comprises two support plates; a movable body is arranged betweenthe two support plates; the middle of the movable body is provided with a cavity; two fixed bodies are welded to the bottom end of the movable body; one sides of the two fixed bodies are provided with floats; a rotating rod is arranged between the two fixed bodies; a rotating plate is welded to the bottom end of the rotating rod; and the top ends of the two fixed bodies are provided with first grooves. Through the floats, the effect that a device main body is always located above seawater can be ensured, corrosion of seawater and the sealing requirement of the device are avoided, a first generator can rotate and generate power through the rotating plate, a movable plate can drive a second generator to generate power, the second generator provides protection for the support plates, thus, the support plates are not corroded by seawater due to electron loss, a metal ball impacts a current plate, and fish is driven.

The invention relates to a preparation method of a cellulose/animal hair composite material for a friction nano-generator and a self-driving sensor and application thereof in nano new energy resources. The preparation method of the electropositive cellulose/animal hair composite material for the friction nano-generator and the self-driving sensor is simple, and the prepared cellulose/animal hair composite material for the friction nano-generator and the self-driving sensor has strong electron loss ability, low cost and high performance. The friction nano-generator prepared by use of the prepared cellulose/animal hair composite material as a positive electrode material can be used in energy devices or in sensors. The friction nano-generator prepared by use of the prepared cellulose/animal hair composite material has high output voltage, high power and stable output; and the prepared self-driving sensor has high sensitivity and stable performance. The cellulose/animal hair composite material belongs to the field of nano new energy.

A diamond tool includes a diamond at least on a cutting edge including one or two or more diamond grains including a diamond phase composed of a diamond crystal structure and a graphite phase composed of a graphite crystal structure. When a ratio I_π*/I_σ* between an intensity of a π* peak derived from a π bond of carbon in the graphite phase and an intensity of a σ* peak derived from a σ bond of carbon in the graphite phase and a σ bond of carbon in the diamond phase is determined for the diamond grain by measuring an energy loss associated with excitation of K-shell electrons of carbon by electron energy loss spectroscopy, the ratio I_π*/I_σ* of the diamond grain on a surface of the cutting edge is 0.1 to 2 and a ratio I_π*/I_σ* of the diamond grain at a depth position of 0.5 μm from the surface of the cutting edge is 0.001 to 0.1.

The invention discloses a method for reducing primary electron loss in a miniature ion electric thruster. The method for reducing the primary electron loss in the miniature ion electric thruster comprises the following steps of: taking an anode at a magnetic pole in a discharge chamber of the miniature ion electric thruster as a magnetic pole anode, taking the anode at the magnetic pole in the discharge chamber of the miniature ion electric thruster as a non-magnetic pole anode, enabling the magnetic pole anode and the non-magnetic pole anode to be independent of each other, and enabling the potential of the magnetic pole anode to be lower than the potential of the non-magnetic pole anode. A structure for reducing the primary electron loss in the miniature ion electric thruster comprises a first anode, a second anode, a third anode and a fourth anode which are sequentially and fixedly arranged on the discharge chamber of the miniature ion electric thruster from bottom to top; a first magnetic pole and a second magnetic pole are fixedly arranged on the discharge chamber of the miniature ion electric thruster from top to bottom; a gap is formed between the first magnetic pole and the second magnetic pole; the first magnetic pole is flush with the fourth anode; and the second magnetic pole is flush with the second anode. According to the method for reducing the primary electron loss in the miniature ion electric thruster, the loss of primary electrons at the magnetic pole can be effectively reduced.

The invention relates to the field of quantum dot light-emitting diodes, in particular to a preparation method of a solid film, a quantum dot light-emitting device and a preparation method. The preparation method of the solid film comprises the following steps of mixing short-chain lipid organic molecules and metal oxide nanoparticles to prepare a mixed solution, and then adding alkali liquor intothe mixed solution until the mixed solution is clarified to obtain a clarified solution, and forming a film from the clarified solution and then curing. Short-chain lipid organic molecules are decomposed into alcohol and acid in the presence of alkali liquor, and hydroxyl in the alcohol and carboxyl in the acid can form hydrogen bonds with hydroxyl, carboxyl, amino, sulfydryl and the like on thesurfaces of the metal oxide nanoparticles. And electron loss caused by combination of hydroxyl, carboxyl, amino, sulfydryl and the like on the surfaces of the metal oxide nanoparticles with electronscan be avoided. The electron transmission performance can be improved. In addition, the hydrogen bonds are beneficial to preventing dehydration reaction on the surfaces of the metal oxide nanoparticles and improving the transmission performance of electrons.

The invention discloses a multilevel structure carbon material, a photocathode anticorrosive coating added with the multilevel structure carbon material and a corresponding preparation method. Firstly, a three-dimensional flower-shaped conductive carbon material with high conductivity and high specific area is synthesized through a soft template and a high-temperature carbonization method, then zero-dimensional graphene quantum dots are synthesized in situ on a two-dimensional petal-shaped carbon plate through a hydrothermal method, and a multilevel structure carbon material is formed. And then preparing an anticorrosive coating by taking a photocathode anticorrosive coating added with the multilevel structure carbon material as a surface coating and taking a graphene/zinc powder coating as a prime coating. And a layer of photocathode is added for protection, so that the anti-corrosion performance of the coating is integrally improved. Photo-induced electrons generated by the photocathode coating can be migrated to the metal surface through graphene, the corrosion potential of metal is reduced to achieve the anti-corrosion effect, and due to the fact that a large number of electrons are generated under the driving of light, even if the coating is locally damaged, compared with the metal electron loss corrosion trend, the electron protection trend still has the advantage.