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35 results about "Hyperfine structure" patented technology

In atomic physics, hyperfine structure comprises small shifts and splittings in the energy levels of atoms, molecules, and ions, due to interaction between the state of the nucleus and the state of the electron clouds.

Compact head-mounted display system protected by a hyperfine structure

ActiveUS20170336636A1Facilitates exploitationEasy to mergeCoupling light guidesOptoelectronicsLight wave
There is provided an optical system, including a light-transmitting substrate (20) having at least two external major surfaces and edges, an optical element for coupling light waves into the substrate (20) by internal reflection, at least one partially reflecting surface located in the substrate (20), for coupling light waves out of the substrate (20), at least one transparent air gap film (110) including a base (112) and a hyperfine structure (111) defining a relief formation, constructed on the base, wherein the air gap film is attached to one of the major surfaces of the substrate (20), with the relief formation facing the substrate (20) defining an interface plane (58), so that the light waves coupled inside the substrate (20) are substantially totally reflected from the interface plane (58).
Owner:LUMUS LTD

Method of extracting and purifying melanin from almond peel

The invention discloses an extracting method and purifying method of melanin from almond peel, which comprises the following steps: adopting almond peel as raw material; extracting through alkaline solution; hydrolyzing impurity through acid; purifying through reciprocal organic solvent washing and alkaline dissolving to sediment; freezing; defreezing; washing through deionized water to remove Cl-; drying in the vacuum; obtaining the product.
Owner:NORTHWEST A & F UNIV

Rapid X-ray diffraction method for structural analysis of a nano material on a surface or at an interface and for structural analysis of a solid/liquid interface, and apparatus used for the method

To characterize or evaluate ultra-fine structures such as ultra-fine nanowires grown on a substrate's crystal surface, buried ultra-fine nanolines or nanowires as sandwiched between a substrate's surface and an overlying cap layer, and thin-film crystals, or to solid-liquid interfacial structures comprising a solution and a solid, 0.1 nm or shorter-wavelength x-rays are incident on their surfaces at an angle of a few degrees or less and the diffracted x-rays are recorded with a two-dimensional x-ray detector in one action within a very short period of time, whereby the intensities of the diffracted x-rays from the ultra-fine structures or solid-liquid interfacial structures are visualized in the reciprocal lattice space and their structures are rapidly analyzed.
Owner:JAPAN SYNCHROTRON RADIATION RES INST

Atom hyperfine structure measuring apparatus and atom hyperfine structure measuring method

The invention belongs to the field of optical frequency measurement, and provides an atom hyperfine structure measuring apparatus with simple structure and an atom hyperfine structure measuring method. The apparatus comprises a first laser, an atom sample pool, a magnetism shielding case, a splitting flat sheet, a photoelectric detector, a radio frequency driving source, a plane mirror, an acousto-optic modulator system and a second laser. The laser emitted by the first laser is received by the photoelectric detector after passing through the atom sample pool and the splitting flat sheet; thelaser emitted by the second laser sequentially passes through the acousto-optic modulator system, the plane mirror and the splitting flat sheet, falls on the atom sample pool and is reversely overlapped with the laser emitted by the first laser at the atom sample pool; the laser frequency of the first laser is resonant with the ground state energy level |1> of the to-be-measured atom to the excited state energy level |2>, and the laser frequency of the second laser is located near the resonance transition of the atom excited state energy level |2> to the to-be-measured excited state energy level |3>; and the acousto-optic modulator system is connected with the radio frequency driving source. According to the atom hyperfine structure measuring apparatus and the atom hyperfine structure measuring method, accurate measurement of the atom hyperfine structure can be realized.
Owner:SHANXI UNIV

Method for measuring superoxide anion radicals in tape grass leaves

The invention discloses a method for measuring superoxide anion radicals in tape grass leaves, belonging to the measuring field of the measuring of superoxide anion radicals. The method comprises the following steps of: firstly, collecting and cleaning the tip parts of fully exposed small and tender tape grass leaves; carrying out Tiron captureing on the Tiron of radicals in a closed operation box in a closed nitrogen environment; and finally measuring by using an EPR (Electron Paramagnetic Resonance) technology. The invention has the advantages of simpler operation and easy grasping, and can measure the superoxide anion radicals of the tape grass leaves in a very short time;, find that and the measured radicals are found to be the superoxide anion radicals according to the superfine structure constant and, the spectrogram shape analysis of an EPR spectrogram and the combination of the remarkable decreases of the radical strength of the leaves pretreated by SOD (Super Oxide Dismutase), and therefore the invention is the most direct, accurate and effective method for measuring the superoxide anion radicals. Superoxide anions are sensitive to pollutants and have a favorable dosage effect relation. The invention is also suitable for other aquatic plant and terrestrial plant species and can be suitable for measuring the radicals of the plant root tissue.
Owner:NANJING UNIV

Atomic ground state hyperfine Zeeman frequency measuring device and method

The invention discloses an atomic ground state hyperfine Zeeman frequency measuring device and method, belonging to the field of atomic frequency standard. The atomic ground state hyperfine Zeeman frequency measuring device comprises an optical radiation module, a filtering module, a fission transition module, an optical detection module and a main control computation module, wherein the optical radiation module is used for enabling an atom generate radiation light; the spectral line of the radiation light comprises two hyperfine structural components; the filtering module is used for filtering out one of the two hyperfine structural components by using an isotope of the atom so as to obtain the filtered radiation light; the fission transition module is used for performing fission and resonance transition on the atom in a microwave cavity under the action of the magnetic field and a radio frequency signal and under the radiation of filtered radiation light; the atom in the microwave cavity is the same as the atom in the optical radiation module; the optical detection module is used for detecting the intensity of the radiation light penetrating through the fission transition module in real time and generating a light intensity signal; the main control computation module is used for supplying the radio frequency signal to the microwave cavity, obtaining an absorption spectral line of the atom according to a corresponding relationship between the radio frequency signal and the light intensity signal and computing the atomic ground state hyperfine Zeeman frequency according to the absorption spectral line.
Owner:JIANGHAN UNIVERSITY

Method of forming a metal wiring in a semiconductor device

A method of forming a metal wiring in a semiconductor device. In order to overcome the limitation of copper filling into the damascene pattern formed on an insulating film using copper as a metal wiring, a chemical enhancer layer is formed on the damascene pattern which is then filled with copper by depositing copper by means of MOCVD method using a copper precursor. The chemical enhancer is exposed to a plasma process or radical plasma process so that it remains only within a bottom portion of the damascene pattern. Therefore, a selective copper deposition within the damascene pattern is provided to accelerate the deposition speed of copper by CECVD method, thus overcoming the limitation of slow and incomplete copper filling for ultra-fine structures.
Owner:SK HYNIX INC

Method and device for testing hyperfine structure energy level of hydrogen atom

The invention discloses a method for testing the hyperfine structure energy level of a hydrogen atom and a device for displaying the hyperfine structure energy level of the hydrogen atom. The device is suitable for the experiment research and teaching of a quantum physics specialty and used for testing and displaying the hyperfine structure energy level of the hydrogen atom. Pure hydrogen is ionized and then dissociated into the hydrogen atoms according to a quantum mechanics principle; each generated ground-state hydrogen atom is in four hyperfine structure energy states, namely |F=1, mF=+1)|F=1, mF=0)(high energy state) and |F=1, mF=-1)|F=0, mF=0)(low energy state), wherein F is the angular quantum number of the ground-state hydrogen atoms, and mF is a magnetic quantum number. The device is manufactured on the basis of a principle that the hydrogen atoms in the high energy states are focused towards a center and the hydrogen atoms in the lower energy states are deflected towards an edge after the ground-state hydrogen atoms pass through a magnetic field with a certain gradient and comprises a hydrogen source system, an ionization system, a tiny drainage hole collimator, a deflection magnet, an imaging target, a vacuum system, a distance adjusting device, a support frame, data acquisition and analysis software, and the like.
Owner:SOUTHEAST UNIV

Preparation method for wheat straw nano-cellulose whiskers

The invention relates to a preparation method for wheat straw nano-cellulose whiskers, and belongs to the technical field of new materials. According to the preparation method, wheat straw is subjected to blasting treatment by steam, the wrapping effect of lignin and hemicellulose on cellulose is broken, most hemicellulose and pectin are separated and removed, sodium chlorite is adopted to conduct oxidation degradation on the lignin, alkali treatment is conducted to further remove residual impurities, and C6 on cellulose hydroxyl is oxidized into carboxyl; a high-speed homogeneous dispersing method is combined for freezing drying to obtain the nano-cellulose whiskers, wherein the nano-cellulose whiskers with less defects grow in the mode of a single-crystal structure and are small and thin in size, high in purity, needle-shaped and highly ordered in atom arrangement; compared with ordinary natural cellulose, the nano-cellulose whiskers have the advantages of being high in specific surface area, purity, crystallinity, strength, modulus and transparency and super-fine in structure.
Owner:CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH

Method for detecting hydroxyl radicals in earthworm body

The invention discloses a method for detecting hydroxyl radicals in an earthworm body. Firstly, a fully exposed earthworm undergoes bowel clearing and is then cleaned. Radical PBN capture is carried out in a deoxygenated hermetical operation box. Finally, EPR technology is used for detection. The method has the advantages that the operation is relatively simple and easy to master and the hydroxylradicals of the earthworm can be detected within a short time; according to a hyperfine structure constant of an EPR spectrogram and the shape analysis of the spectrogram, the method discovers the detected radicals to be the hydroxyl radicals and is the most direct, accurate and effective method at present for detecting the hydroxyl radicals; and the method has a good dose-response relationship. Research results show that the strength of the hydroxyl radical and the exposed concentration are in good dose-response relationship.
Owner:NANJING UNIV

High temperature preparation device of raw bamboo fiber nano carbon particles

InactiveCN103496687AHas a Young's modulusWith manuscript transparencyNano-carbonFiberSolenoid valve
The invention relates to a high temperature preparation device of raw bamboo fiber nano carbon particles. The high temperature preparation device comprises a closed container in which a vibrator and a temperature sensor are arranged, and a high temperature water vapor generator, wherein the high temperature water vapor generator comprises a water tank, an electric heater for heating water, and a vapor output pipeline; the vapor output pipeline is communicated with the upper cavity of the closed container, the vapor output pipeline is provided with a solenoid valve, the temperature sensor is connected with an IPC(Industrial Personal Computer) input end, and the IPC respectively controls the work of the electric heater and the solenoid valve. The device can quickly carbonize the raw bamboo fiber powder, and moreover, the prepared raw bamboo fiber nano carbon particles have the characteristics such as big surface area and ultrafine structure.
Owner:FUZHOU UNIV

Large-scale preparation method of hyperfine nanostructure and use thereof

The invention discloses a method for preparing hyperfine nanometer structure in a large scale and the application. The method consists of: 1) putting the object to be processed in a field transmission electron microscope with accelerating voltage more than 200kV; regulating the amplifying multiple of the field transmission electron microscope to 100KX; converging transmission electron beam into a beam spot of 1-10nm; 2) the beam spot is moved to the position where the hyperfine nanometer structure is needed to be prepared on the surface of the object to be processed to have an exposure, thus obtaining the hyperfine nanometer structure on the position; 3) moving the beam spot in the procedure 2) to the next position needed for preparing the hyperfine nanometer structure; repeating the procedures to obtain the hyperfine nanometer structure including a nanometer hole and a nanometer raster slit. The processing precision of the method is 1nm; the penetrating depth can reach 300 nanometers; the controllability and repeatability are high; a random two dimensional array can be arranged; the method has extensive application in preparing a DNA resequencing device, an atomic wave diffraction device, and a single particle probing device.
Owner:PEKING UNIV

Adjustable vortex array generation method and device based on optical induction atomic lattice

InactiveCN113376843AOvercoming irreconcilable deficienciesMake up for the problem of lower energy in high-level diffractionOptical elementsFine structureBeam splitter
The invention belongs to the technical field of optical communication, and relates to an adjustable vortex array generation method and device based on an optical induction atomic lattice. The method comprises the following steps: S1, the frequencies of coupling light and input light are respectively detuned and locked on D1 and D2 hyperfine structure transition lines of alkali metal atoms; S2, the coupled light is divided into two light beams, the two light beams are incident to a depolarization beam splitter prism from the two sides of the incident plane of the depolarization beam splitter prism at different incident angles and are divided into four light beams, two light beams of the four light beams are emitted at an included angle and generate a first standing wave field in the propagation direction, the other two light beams generate a second standing wave field in the propagation direction, and after the direction of the first standing wave field is rotated by 90 degrees, the first standing wave field beam and the second standing wave field beam are combined and incident into an alkali metal steam pool to form a two-dimensional optical induction atomic lattice modulated in space periodically; and S3, after the input light passes through a vortex wave plate, the input light and an interference standing wave field formed by the coupling light oppositely coincide and are incident to the alkali metal steam pool, and after atomic lattice diffraction, a vortex array is output. The vortex array can be dynamically generated and controlled.
Owner:SHANXI UNIV

Plasma etching method for fabricating uniform fine patterns

The invention discloses a plasma etching method for fabricating uniform fine patterns, wherein the process for carrying out the semiconductor trimming process includes: step A: first gas is used as a plasma source to trim a hard mask layer; step B: a hard mask layer solidification process is carried out to keep a pattern stable, so that the pattern cannot be deformed; step C: second gas is used as the plasma source to trim the hard mask layer; and step D: third gas is used as the plasma source to trim the hard mask layer; and the first gas, the second gas and the third gas respectively have different microloading effects in order to reduce the difference between the characteristic dimensions of a dense region and an open region. By adopting the gases with the different microloading effects to carry out multiple times of trimming and adding the solidification process in the trimming step, the plasma etching method guarantees the stability of the patterns and minimizes the difference between the characteristic dimensions of the dense region and the open region, and thereby a uniform ultrafine structure is obtained.
Owner:SHANGHAI HUALI MICROELECTRONICS CORP

Electromagnetic induction measure apparatus

The invention discloses an electromagnetic induction measure apparatus, and belongs to the electromagnetic measurement field. The electromagnetic induction measure apparatus includes a processing unit, a laser generator, an acousto-optic modulator, a signal generator, a current adjusting module, a physical system and an optical detection unit. The laser generator is controlled by the processing unit to emit a linear scan frequency. Furthermore linearly scanned excitation signals are obtained through the acousto-optic modulator and make Zeeman split phenomenon happen in the physical system. The optical detection unit returns optical detection signals to the processing unit, so that the processing unit fits corresponding data curves according to the excitation signals and the optical detection signals. Stray electromagnetic induction intensity of interference magnetic fields generated in various electronic circuits in the system is calculated by two groups of data curves obtained through only changing of the current direction in a C field coil. Furthermore the research accuracy is improved when the hyperfine structure of an atomic ground state is researched.
Owner:JIANGHAN UNIVERSITY

Precise frequency spectrum benchmark method based on atomic ground state hyperfine structure reference and atomic clock

The invention provides a precise frequency spectrum atomic clock based on atomic ground state hyperfine structure reference. The atomic clock comprises a spectrum lamp, a high-frequency oscillator, a light filtering resonance module and an optical excitation module, wherein the spectrum lamp is internally provided with active metal gas and is used for generating an excitation light signal; the high-frequency oscillator is used for generating oscillation excitation frequency and providing pumping energy for the spectrum lamp; the light filtering resonance module is filled with active metal gas which is the same as that of the spectrum lamp and provides a microwave magnetic field for the spectrum lamp so as to enable the active metal gas in the light filtering resonance module and the excitation light signal generated by the spectrum lamp to be subjected to resonance amplification to generate a resonance transition frequency optical signal; and the optical excitation module can acquire the resonance transition frequency optical signal, convert the resonance transition frequency optical signal into an electric signal, lock an output frequency on a transition resonance point of a metal atom, and output a reference frequency.
Owner:HUBEI NORMAL UNIV

Special measuring tool for 10-degree end face of hyperfine structure (HSF)-10 handle

The invention relates to a special measuring tool for 10-degree end face of a hyperfine structure (HSF)-10 handle. The special measuring tool comprises an L-shaped support. A measuring tool main body is fixed on the L-shaped support, a conical location groove is arranged on the upper side of the measuring tool main body, an annular measuring end face is arranged on the outer edge of an upper opening of the location groove, a measuring hole is arranged on one side of the annular end face, a dial indicator is fixed between the measuring tool main body and a base of the L-shaped support, and a measuring head at the upper end of a measuring rod of the dial indicator penetrates out of the measuring hole on the annular measuring end face for certain height. The special measuring tool adopts the measuring principle that the 10-degree conical face location is adopted, and the dial indicator is directly arranged on the end face. The measuring accuracy is directly improved to the mu-grade. By means of the measuring tool, product accuracy can be controlled to 0.001mm, and product accuracy is improved. In addition, the measuring tool is convenient to use, users can place the handle portion of a product in the measuring conical hole and properly presses the handle portion to enable two conical faces to be completely contacted, and direct reading can be achieved.
Owner:ZHENGZHOU DIAMOND PRECISION MFG

Method for forming metal wires in semiconductor device

The present invention discloses a method for forming a metal line of a semiconductor device, in which a Cu thin film is deposited on a diffusion diaphragm layer after chemical enhancer and plasma treatment, thereby improving the burying characteristics of a contact hole with an ultrafine structure . The method comprises the following steps: forming an intermediate insulating film layer on a semiconductor substrate with a predetermined low-level structure; forming a mosaic pattern in the interlayer insulating film layer; forming a diffusion barrier layer on the entire structure with the mosaic pattern; chemical enhancer treatment on the diffusion membrane layer to form a chemical enhancer film on the diffusion membrane layer; plasma treatment; Cu thin film formation on the entire structure to bury the mosaic pattern; and polishing treatment to expose the intermediate The upper surface of the insulating film layer, causing the Cu thin film to remain in the mosaic model.
Owner:SK HYNIX INC

Particle beam excited vacuum ultraviolet-visible band magnetic spectrometry method and system

The invention provides a method and a system for testing magneto-optical spectrum of a particle beam-excited vacuum ultraviolet-visible light wave band. The method and the system have the advantages that an ion beam with charges is neutralized with an electron beam to form a neutral particle beam (atom beam), the particle beam can excite a sample without being influenced by a magnetic field; the superfine structure in the substance is reflected by electromagnetic radiation caused by atomic energy and transition energy; an optical signal is subsequently treated and controlled by a monochromator and the like, and the produced electromagnetic radiation in different frequency bands in the particle bombing process is detected, including the infrared-visible light-ultraviolet-vacuum ultraviolet light, so that the substance structures of different levels are disclosed, and the electron structure basis is provided for the research and development, production and application of novel materials.
Owner:无锡纽飞格科技有限公司

Simulation method and device for isotopic fine structure and hyperfine structure of mass spectrometry

The invention discloses a simulation method and device of a mass spectrum isotope fine structure and an ultrafine structure. The simulation method comprises the following steps: calculating an isotopefine and ultrafine structures of a molecular formula formed by any one element through an isotope vector operation, wherein an isotope vector is a combination of a quality vector and an abundance vector; arranging the quality vector according to an ascending order or a descending order, wherein abundance vector element corresponds to quality vector elements; and building an isotope element cluster vector. A high-efficient calculation method of the isotope fine structure is provided, a high-efficient algorithm of a designated mass-to-charge ratio isotope ultrafine structure is given, and high-efficient calculation of the isotope fine structure and the ultrafine structure is realized by using a unified algorithm; the problems that less internal memories of the vector operation and a change-keeping method are consumed, the operation speed is high and the calculation precision is high are found, and the device can be applied to distribution and calculation of the isotope of any elements,and the self-defined isotope distribution is supported.
Owner:SHANDONG ANALYSIS & TEST CENT

Atomic ground state hyperfine Zeeman frequency measuring device and method

The invention discloses an atomic ground state hyperfine Zeeman frequency measuring device and method, belonging to the field of atomic frequency standard. The atomic ground state hyperfine Zeeman frequency measuring device comprises an optical radiation module, a filtering module, a fission transition module, an optical detection module and a main control computation module, wherein the optical radiation module is used for enabling an atom generate radiation light; the spectral line of the radiation light comprises two hyperfine structural components; the filtering module is used for filtering out one of the two hyperfine structural components by using an isotope of the atom so as to obtain the filtered radiation light; the fission transition module is used for performing fission and resonance transition on the atom in a microwave cavity under the action of the magnetic field and a radio frequency signal and under the radiation of filtered radiation light; the atom in the microwave cavity is the same as the atom in the optical radiation module; the optical detection module is used for detecting the intensity of the radiation light penetrating through the fission transition module in real time and generating a light intensity signal; the main control computation module is used for supplying the radio frequency signal to the microwave cavity, obtaining an absorption spectral line of the atom according to a corresponding relationship between the radio frequency signal and the light intensity signal and computing the atomic ground state hyperfine Zeeman frequency according to the absorption spectral line.
Owner:JIANGHAN UNIVERSITY

High-precision particle number difference preparation platform

PendingCN112737581AIncrease population differenceEasy to observePulse automatic controlParticle physicsRadiation field
The invention provides a high-precision particle number difference preparation platform, which comprises a light source module, a state selection preparation module, a magnetic field module, a radiation field module, a particle number difference preparation module and a detection module, wherein the light source module is used for enabling atoms to generate pumping light through stimulated radiation; the state selection preparation module is used for collecting isotope atoms of the atoms and filtering two hyperfine structure components in the focused pumping light; the magnetic field module provides an external magnetic field and is used for splitting the atom ground state hyperfine structure to form a quantization axis; the radiation field module is used for enabling the atomic ground state hyperfine structure to generate resonance transition; the particle number difference preparation module is used for pumping atoms in a ground state F=1 energy state to a ground state F=2 energy state under the irradiation of the pumping light filtered by the state selection preparation module; and the detection module enables the output signal frequency to be locked at the center frequency of an atomic spectral line in the particle number difference preparation module through quantum deviation correction. According to the high-precision particle number difference preparation platform, the population difference of particles can be increased with high precision, the observation of microwave or radio frequency resonance between atomic ultrafine sub-energy levels is facilitated, and the research on the internal fine structure and change of atoms is facilitated.
Owner:JIANGHAN UNIVERSITY

Method and device for testing hyperfine structure energy level of hydrogen atom

The invention discloses a method for testing the hyperfine structure energy level of a hydrogen atom and a device for displaying the hyperfine structure energy level of the hydrogen atom. The device is suitable for the experiment research and teaching of a quantum physics specialty and used for testing and displaying the hyperfine structure energy level of the hydrogen atom. Pure hydrogen is ionized and then dissociated into the hydrogen atoms according to a quantum mechanics principle; each generated ground-state hydrogen atom is in four hyperfine structure energy states, namely |F=1, mF=+1)|F=1, mF=0)(high energy state) and |F=1, mF=-1)|F=0, mF=0)(low energy state), wherein F is the angular quantum number of the ground-state hydrogen atoms, and mF is a magnetic quantum number. The device is manufactured on the basis of a principle that the hydrogen atoms in the high energy states are focused towards a center and the hydrogen atoms in the lower energy states are deflected towards an edge after the ground-state hydrogen atoms pass through a magnetic field with a certain gradient and comprises a hydrogen source system, an ionization system, a tiny drainage hole collimator, a deflection magnet, an imaging target, a vacuum system, a distance adjusting device, a support frame, data acquisition and analysis software, and the like.
Owner:SOUTHEAST UNIV
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