61 results about "Spatial discrimination" patented technology

The invention provides a laser spectrum analyzer combining a confocal micro-Raman spectrometer with a laser-induced breakdown spectrometer (LIBS). The analyzer comprises a micro-Raman system, a micro LIBS system, a high resolution micro-imaging system, a confocal micro-light path, and a spectrum receiving system with a time resolution function, and automatically switches into a white light micro-imaging observation mode, an automatic focusing mode, a LIBS spectrum working mode, and a Raman spectrum working mode. The significant characteristics of the invention are that compact combination of Raman with LIBS is realized by a micro confocal system; qualitative and quantitative analysis of substance elements at the same minimal position and molecular structure is realized; with the high-resolution imaging function, element spatial discrimination and substance structure chemical analysis can be carried out in micrometers so as to obtain complete information of spatial distribution images of chemical elements, substance structure and physical conditions of a sample.

The invention discloses a spatially-separated pump-probe transient absorption spectrograph and a realization method. The realization method is characterized by generating a light source through a femtosecond light source system; realizing the beam splitting of pump light and probe light through a beam splitter; realizing the different time delay of the probe light through a time delay line; realizing the two-dimensional rotation and the calibration of the probe light within a horizontal plane and a vertical plane through a sweep reflector group; calibrating which means guaranteeing the incidence of the rotated probe light into a aperture within the front section of an objective lens; finally, obtaining a two-dimensional image formed on a sample under the combined action of the probe light and the pump light by a data collection system. According to the spatially-separated pump-probe transient absorption spectrograph and the realization method, the extremely high spatial discrimination can be realized, and moreover, the visual probe of carriers, excitors or plasmons can be realized.

The invention belongs to the technical field of optical microscopic imaging and spectral measurement, and relates to a method and a device for confocal Raman spectrum detection with high spatial discrimination. According to the method and the device, confocal technique is integrated into the spectrum detection; nondestructive separation is carried out on Rayleigh scattering light and Raman scattering light by using of a dichroic beam splitting system (13); by using the characteristic that the maximum value of a confocal curve (34) corresponds to a focal position accurately, spectral information exciting a light spot focal position is accurately acquired through maximizing; and the spectrum detection with the high spatial discrimination is achieved, and the method and the device which are capable of achieving the sample microcell spectrum detection with the high spatial discrimination are formed. The method and the device for the confocal Raman spectrum detection with the high spatial discrimination have the advantages of being accurate in positioning, high in spatial discrimination, high in spectrum detection sensitivity and the like, and has broad application prospect in the fields of biomedicine, court evidence collection and the like.

The invention discloses a superconductive nanowire single-photon detector. The superconductive nanowire single-photon detector consists of N superconductive nanowire units which are connected in series, N parallel resistors of different resistance values and an optical resonator, wherein the N resistors of different resistance values are respectively connected with two ends of the N superconductive nanowire units in parallel; the optical resonator covers the upper layers of the N superconductive nanowire units which are connected in series. The superconductive nanowire single-photon detector not only can realize photon number discrimination, but also has a spatial discrimination capability. The invention also discloses a method for manufacturing the superconductive nanowire single-photon detector, wherein only is once electronic beam lithography needed to be carried out on nanowire patterns in the whole technological process, and thus the manufacturing cost of the superconductive nanowire single-photon detector is effectively reduced.

The invention relates to a laser differential confocal LIBS, a Raman spectrum-mass spectrum imaging method and a Raman spectrum-mass spectrum imaging device and belongs to the technical fields of confocal microscopy imaging, mass spectrum imaging and spectral measurement. In the invention, the differential confocal microscopy imaging technology is combined with a spectrum and mass spectrum detection technology; a high-spatial-discrimination differential confocal system is used for axially focusing and imaging a sample; a mass spectrum detection system is used for performing mass spectrum detection to charged molecules and atoms in a sample microcell; and a spectral detection system is used for performing microcell spectrum detection to focal spot excitation spectrums (Raman spectrum and induced breakdown spectrum) of a differential confocal microscopy system, thereby achieving high-spatial discrimination and high-sensitivity imaging and detection of complete component information and configuration parameters of the sample microcell. The invention achieves advantage complement and structure and function fusion of laser poly-spectrum component imaging detection (mass spectrum, Raman spectrum and laser-induced breakdown spectrum). The method and the device have wide application prospect in the fields of biology, physical chemistry, micro-fabrication and nano-fabrication and the like.

The invention relates to a spectral pupil laser differential confocal LIBS, a Raman spectrum-mass spectrum microscopic imaging method and a Raman spectrum-mass spectrum microscopic imaging device and belongs to the technical fields of confocal microscopic imaging, optical-spectrum imaging and mass spectrum imaging. In the invention, spectral pupil laser differential confocal imaging is combined with optical-spectrum and mass spectrum detection technologies, so that high-spatial-discrimination form imaging to a sample is carried out by means of a micro focus light spot of a spectral pupil laser differential confocal microscope which is subjected to ultra-discrimination technology treatment; mass spectrum detection to charged molecules and atoms in a micro zone of a sample is carried out by means of the mass spectrum detection system; micro zone optical spectrum detection is carried out to a focused light spot excitation spectrum (Raman spectrum, induced breakdown spectrum) of the spectral pupil laser differential confocal microscopic system through the optical-spectrum detection system; and high-spatial discrimination, high-sensitive imaging and high-sensitive detection to complete component information and form parameters of the sample micro zone is carried out through advantage complement and structural fusion of laser multi-spectrum detection. The invention provides a novel technical approach for imaging detection of substance components and formations in the field of biology, material and the like.

The invention relates to a laser confocal LIBS, a Raman spectrum-mass spectrum imaging method and a Raman spectrum-mass spectrum imaging device and belongs to the technical fields of confocal microscopy imaging, mass spectrum imaging and spectral measurement. In the invention, the confocal microscopy imaging technology is combined with a spectrum and mass spectrum detection technology; a high-spatial-discrimination confocal system is used for axially focusing and imaging a sample; a mass spectrum detection system is used for performing mass spectrum detection to charged molecules and atoms in a sample microcell; and a spectral detection system is used for performing microcell spectrum detection to focal spot excitation spectrums (Raman spectrum and induced breakdown spectrum) of a confocal microscopy system, thereby achieving high-spatial discrimination and high-sensitivity imaging and detection of complete component information and configuration parameters of the sample microcell. The invention achieves advantage complement and structure and function fusion of laser poly-spectrum component imaging detection (mass spectrum, Raman spectrum and laser-induced breakdown spectrum). The method and the device have wide application prospect in the fields of biology, physical chemistry, micro-fabrication and nano-fabrication and the like.

The invention provides a Raman base which comprises a Raman base substrate, a metal layer arranged on the Raman base substrate, and a graphene film arranged on the metal layer. According to the Raman base, the graphene film is compounded with the metal layer, and the graphene film has an atomic-scale thickness, and is capable of effectively enhancing the strength of an electric field and amplifying a Raman signal, so that when the Raman base provided by the invention is used for Raman detection, the sensitivity, the uniformity and the reliability of the Raman detection are preferable. Experiment results indicate that the Raman base provided by the invention is used for Raman detection, an object to be detected with a mol concentration of 10<-4> mol/L-10<-9> mol/L is detected, the detected spatial discrimination Raman diagram color of the object to be detected is uniform, and the detected Raman spectrum is displayed to be consistent with a Raman signal.

The invention discloses a high-spatial-discrimination long-range facial-form detecting device and method. The device comprises a scanning optical head and is characterized in that the scanning optical head comprises a small hole array plate, a beam splitter, a lens array and an array detector, the small hole array plate divides input parallel light beams into a plurality of parallel thin light beams, then the light beams enter the beam splitter, each thin light beam is input to the lens array in a transmission mode through the beam splitter, lens units in the lens array focus the corresponding thin light beams to the surface of an object to be tested respectively, and the light beams reflected by the surface of the object to be tested enter the array detector through the lens array and the beam splitter in sequence. The device is simple in structure and stable in performance, high-space-frequency sampling measuring can be carried out on the surface to be tested, measuring of facial-form errors of high frequency (larger than 1 line/mm) can be expanded, and at least 10 lines/mm can be achieved commonly.

The invention relates to eye-protecting brain-strengthening effervescent tablets for supplementing nutrient to human bodies. The effervescent tablets consist of active ingredients, a pharmaceutically acceptable acid-base pair and excipients, wherein the active ingredients are utein ester, taurine and docosahexaenoic acid (DHA); the pharmaceutically acceptable acid-base pair comprises an acid compound and an alkaline compound; and the excipients are a filler, an adhesive, a lubricant, a sweetener and a flavoring agent. Through the experiments, the effervescent tablets have remarkable effects of promoting the memory acquisition and memory recurrence of passive avoidance response and spatial discrimination capacity of mice. The effervescent tablets have remarkable effects of improving symptoms such as blurred vision, dry eyes, eye swelling, ophthalmodynia, photophoby and the like, and can remarkably improve the persistence of photopic vision of both eyes; and the effervescent tablets have remarkable effects of strengthening brains and protecting eyes according to the criterion.

A method and system for feedback of spatial CSI of a spatial channel that connects receive antennas at user equipment and multiple transmit antennas. Spatial discrimination information is provided as feedback at the transmitter and the receiver connecting the user equipment and a cell. With the user equipment providing the transmitter and the receiver side spatial discrimination information of each sub-channel as feedback, the composite spatial CSI over multiple segments of transmit antennas can be determined. The user equipment may have one or multiple receiving antennas, and the spatial discrimination information can be subband short-term. In some embodiments, the spatial discrimination information at the receiver side is derived from the actual spatial channel while receiver implementation is taken into account. The spatial discrimination information at the transmitter and at the receiver can be can be provided as feedback using codebooks for MIMO precoding.

The invention provides a radiation dose measurement method based on a quantum dot electroluminescent principle, which includes acquiring electroluminescent signals of an electroluminescent system based on a quantum dot in a radiation field through an image acquiring system, obtaining electroluminescent signal strength through processing and amendment, and obtaining radiation dose information according to functional relationship of the electroluminescent signal strength and the radiation dose. The novel radiation dose measurement method effectively improves space and time resolution of radiation dose measurement results, can be used for monitoring steady state radiation field dose, can also be used for monitoring pulse radiation filed dose, can obtain two-dimensionally or three-dimensionally distributed real-time information of the radiation dose, and can obtain radiation dose information with spatial discrimination reaching micron dimension.

A method and system for feed-back of spatial CSI of an entire spatial channel that connects receive antennas at user equipment and multiple transmit antennas. Spatial discrimination information is provided as feed-back at the transmitter and the receiver connecting the user equipment and a cell. With the user equipment providing the transmitter and the receiver side spatial discrimination information of each sub-channel as feedback, the composite spatial CSI over multiple segments of transmit antennas can be determined. The user equipment may have one or multiple receiving antennas, and the spatial discrimination information can be subband short-term. In some embodiments, the spatial discrimination information at the receiver side is derived from the actual spatial channel while receiver implementation is taken into account. The spatial discrimination information at the transmitter and at the receiver can be can be provided as feedback using codebooks for MIMO precoding.

The invention relates to a preparation method of a microstructure reinforcement reflective photocathode. According to the method, an acid solution and an alkali solution are adopted to carry out treatment on a micro-channel plate alternatively so as to acquire a microstructure reinforcement substrate with the surface being provided with an inverted conical backward concave type microstructure array, an electrode layer and a photoelectric emission layer are sequentially plated at the surface of the microstructure reinforcement substrate by adopting a physical vapor deposition method, and a microstructure reinforcement reflective photocathode is prepared. According to the microstructure reinforcement reflective photocathode acquired through the method, the quantum efficiency and the detection ability for weak signals of the photocathode can be greatly improved, and the photoelectric emission uniformity and the stability are good, thereby being applicable to a large-scale photoelectric emission surface in spatial discrimination. The method provided by the invention further has the advantages of simple technological process, low cost and the like.

The invention relates to a biaxial laser differential confocal LIBS, a Raman spectrum-mass spectrum microscopic imaging method and a Raman spectrum-mass spectrum microscopic imaging device and belongs to the technical fields of confocal microscopic imaging, optical-spectrum imaging and mass spectrum imaging. In the invention, biaxial laser differential confocal imaging is combined with optical-spectrum and mass spectrum detection technologies, so that high-spatial-discrimination form imaging to a sample is carried out by means of a micro focus light spot of a biaxial laser differential confocal microscope which is subjected to ultra-discrimination technology treatment; mass spectrum detection to charged molecules and atoms in a micro zone of a sample is carried out by means of the mass spectrum detection system; micro zone optical spectrum detection is carried out to a focused light spot excitation spectrum (Raman spectrum, induced breakdown spectrum) through the optical-spectrum detection system; and high-spatial discrimination, high-sensitive imaging and high-sensitive detection to complete component information and form parameters of the sample micro zone through advantage complement and structural fusion of laser multi-spectrum detection. The invention provides a novel effective technical approach for imaging detection of substance components and formations in the field of biology, material and the like.

The invention discloses a detection method for a diffused junction of an InGaAs/InP plane type photoelectric detector. The detection method comprises the following steps: carrying out the sectional plane sample preparation when a wafer or device to be tested passes through a diffusion zone; carrying out the sensing of the micro-distribution of differential capacitance in the diffusion zone and near zones on the sectional plane; and determining the position and diffusion depth of a PN junction according to the micro-distribution characteristic of the differential capacitance. The method is suitable for the detection of a small-size diffusion window and a photosensitive unit of the plane type photoelectric detector, has high spatial discrimination, and can provide information on lateral diffusion depth.

The invention discloses a microchannel plate and a preparation method thereof and relates to a field of micro-optical element manufacture technology. According to the invention, an escape angle of multiplication electron beams output from an output terminal of the microchannel plate is controlled, the coupling efficiency of the microchannel plate is improved and spatial discrimination capability is enhanced. The main technical scheme of the invention is that the microchannel plate includes a base board and at least one film; the base board is provided with a plurality of micro-channels; the input terminal whose end face is coated with conducting material is disposed on one end of each micro-channel; the output terminal is disposed on the other end of each micro-channel; an end of the film is formed on the end part of the output terminal through coating while the other end of the film is formed on the inner wall of the output terminal; and the film includes a first conducting layer, a medium layer and a second conducting layer formed on the output terminal successively through coating, wherein the lengths of the parts of first conducting layer, the medium layer and the second conducting layer on the inner wall of the micro-channel decrease in sequence.

The invention relates to a laser dual-axis confocal Brillouin-Raman spectral measurement method and apparatus realizing integration of images and spectrums, belonging to the technical field of microscopic spectral imaging. According to the invention, dual-axis confocal microscopy and spectral detection technology are organically fused, Rayleigh light is used for assisted detection, Raman spectral detection technology and Brillouin spectral detection technology are cooperatively used to realize high spatial discrimination image-spectrum integrated detection of a system, and high spatial resolution is achieved. The apparatus has three modes, i.e., a three-dimensional chromatographic geometric imaging mode, a spectral detection mode and a micro-area image-spectrum chromatographic imaging mode, obtains basic properties and a plurality of crossing effects of substances by detecting abandoned Brillouin diffusion light in confocal Raman spectral detection, realizes acquisition of a plurality of parameters like the micro-area morphology, state, texture and attributes of a measured sample in virtue of the characteristic that advantages of confocal Raman spectral detection technology and confocal Brillouin spectral detection technology are complementary, and has wide application prospects in fields like biomedicine, high energy manufacturing and material chemistry.

This device combines multiple elements that function like a single smart antenna that performs both connectivity and spatial discrimination functions. The antenna functions in both receive and transmit modes. The apparatus utilizes commonly used components to distinguish and separate desired satellite signals from those signals of satellites in close directional proximity. Disclosed are six methods for optimizing reception of desired satellite signals performed either mechanically or electronically and also included is an optimization technique when data stream reception is ≦1 Gbps. The transmission apparatus uses many of the same components as the receiver antenna and additionally uses in-beam nulling to fine tune transmission.

The invention discloses a method for measuring carrier concentration in a semiconductor quantum well. The method includes steps of measuring local conductance distribution of the cross section of the semiconductor quantum well by the electric detection mode of a scanning probe microscope; setting up a numerical model capable of reflecting relation between a conducting probe-quantum well Schottky contact conductivity and carrier concentration in the quantum well; and determining parameters and carrier concentration of the quantum well of the numerical model according to the measured conductivity distribution. The method is high in spatial discrimination and has advantages in analysis of a narrow quantum well and in coupling of the quantum well, is applicable to wider carrier concentration range from non-degeneracy to degeneracy doping conditions, and has significance value for analysis of internal performances of a semiconductor photoelectric device taking a quantum well as a functional structure.

The invention belongs to the technical field of spectrum measurement and imaging and relates to a laser biax confocal induced breakdown-Raman spectrum imaging detection method and device. The method and device can be used for high spatial discrimination imaging and detection for microcell component and shape parameters of a sample. According to the method and device, elementary composition information of sample components is detected by utilizing the laser-induced breakdown spectrum; chemical bond and molecular structure information of the sample is detected by utilizing the Raman spectrum; surface appearance information of the sample is detected by utilizing the biax confocal technology. A biax structure has the advantages of being large in view field and working distance, the back scattering influence can be effectively restrained, and the spectrum detection signal-to-noise ratio is raised; the three elements are combined, the structural sharing and functional complementation can be achieved, and the comprehensive measurement about the appearance and component information of the sample can be achieved. The method and device have the advantages of being high in spatial discrimination, rich in material component information, controllable in measured focusing spot size and the like, and the wide prospect of application in fields such as mineral products, metallurgy, space exploration, environment monitoring, biology and medical treatment can be achieved.

This device combines multiple elements that function like a single smart antenna that performs both connectivity and spatial discrimination functions. The antenna functions in both receive and transmit modes. The apparatus utilizes commonly used components to distinguish and separate desired satellite signals from those signals of satellites in close directional proximity. Disclosed are six methods for optimizing simultaneously reception of multiple desired satellite signals performed either mechanically or electronically and also included is an optimization technique. The transmission apparatus uses many of the same components as the receiver antenna and additionally uses in-beam nulling to fine tune transmission.