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163 results about "Nano grating" patented technology
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Waveguide device and three-dimensional display device
InactiveCN106443867AIncrease generation costImpede industrializationPlanar/plate-like light guidesParallaxViewpoints
The invention discloses a waveguide device. The waveguide device comprises at least one waveguide device unit, wherein each waveguide device unit comprises a waveguide body; each waveguide body is a slab waveguide, or a strip waveguide or a curved surface waveguide with rectangular cross section; the upper surface of the waveguide body is a light emergent surface, nano gratings in groups are arranged on the surface of the light emergent surface and inside the waveguide body, the nano gratings have convergence effect on lights, and the lights after total reflection of the waveguide body converge in space above the light emergent surface to form at least one viewpoint. By adopting the technical scheme of the invention, a multilayer (two layers and more than two layers) compound type directive light guide plate overlaid by multiple waveguide device units can be constructed, further a way of controlling successive illumination of the layers through frequency division is adopted, display information amount is increased by adopting a method of increasing display frequency, the increased display information amount can be used for multi-view parallax three-dimensional display, also can be used for multifocal multi-field-depth depth three-dimensional display and also can be applied to the multi-view multifocal mixed true three-dimensional display field, and then a naked eye 3D display device is constructed.
Owner:SVG TECH GRP CO LTD +1
Naked eye three-dimensional display device based on active emitting type display technology
The invention discloses a naked eye three-dimensional display device based on an active emitting type display technology. The device comprises an active emitting display unit, wherein the display unit comprises an emitting array adjustable in light strength, and according to multi-visual-angle superposed images, the emitting array modulates a light field amplitude through a circuit control system; and a directive phase plate, wherein the pixels of the directive phase plate contains nano-grating pixel structures which are respectively corresponding to sub-pixels of the visual-angle images, the nano-grating pixel structures contains nano-grating combinations which are designed according to a holographic principle, the nano-grating pixel structures carry out wavefront conversion on incident visual-angle images after light emitted by the active emitting display unit is irradiated to the directive phase plate, and a convergence viewpoint of parallel illumination light is formed in the space in front of or at the side surface of the active emitting display unit. Compared with the prior art, the demands of personal consumption electronic markets and industrial and outdoor display markets are simultaneously met, and naked eye three-dimensional display which is ultra-thin, convenient, large in area, high in brightness and low in cost is realized.
Owner:SVG TECH GRP CO LTD +1
Holographic three-dimensional display method and device based on spatial light modulator
ActiveCN105700320AIn line with observation habitsRealize multi-view full parallax dynamic holographic three-dimensional displayOptical elementsSpatial light modulatorBeam splitter
The invention discloses a holographic three-dimensional display method and a holographic three-dimensional display device based on a spatial light modulator; the display device is composed of a laser light source, a polarization modulation component, a beam splitter prism, a spatial light modulator, a computer, a lens, and a pixel-type nano grating based directional diffraction screen; and the display method comprises the following steps: obtaining a multi-view two-dimensional image of a target object and undergoing preprocessing conversion process to generate a group of image arrays used for phase type hologram calculation; calculating corresponding phase type holograms with an iterative Fourier transform algorithm, loading the holograms to the spatial light modulator, and irradiating the holograms with the laser light source to obtain holographic reproductive images; and designing and manufacturing the pixel-type nano grating based directional diffraction screen, and directionally diffracting corresponding reproductive image pixels to fixed positions to form different viewpoints. The method and the device disclosed by the invention, by combing with fast refreshing and loading of the spatial light modulator for the holograms, realize multi-view full-parallax dynamic holographic three-dimensional reproduction of the target object, and provide a feasible scheme for application of a naked-eye three-dimensional display technology.
Owner:SUZHOU UNIV
Ultrathin nanostructured metals for highly transmissive plasmonic subtractive color filters
An ultrathin plasmonic subtractive color filter in one embodiment includes a transparent substrate and an ultrathin nano-patterned film formed on the substrate. A plurality of elongated parallel nanoslits is formed through the film defining a nanograting. The nanoslits may be spaced apart at a pitch selected to transmit a wavelength of light. The film is formed of a material having a thickness selected, such that when illuminated by incident light, surface plasmon resonances are excited at top and bottom surfaces of the film which interact and couple to form hybrid plasmon modes. The film changes between colored and transparent states when alternatingly illuminated with TM-polarized light or TE-polarized light, respectively. In one configuration, an array of nanogratings may be disposed on the substrate to form a transparent display system.
Owner:LEHIGH UNIVERSITY
Naked eye 3D laser display device
ActiveCN105372824AImprove protectionNo visual fatigueOptical light guidesSteroscopic systemsProjection screenLaser light
The invention discloses a naked eye 3D laser display device. The naked eye 3D laser display device comprises a directional projection screen, a laser light source, a red single-color laser light source, a green single-color laser light source and a blue single-color laser light source. Light rays emitted by the three single-color laser light sources at specific angles and specific positions are incident on the directional projection screen provided with nano grating pixels, the same outgoing light fields are formed, the laser light source provides multi-view-angle image pixels, the multi-view-angle image pixels match a nano grating pixel array on the directional projection screen, and, through direct space modulation for laser projection light, colorful 3D display is achieved; and crosstalk does not exist between various view point, and the naked eye 3D laser display device has the advantage that people has no watching visual fatigue, and has the advantage of low cost.
Owner:SVG TECH GRP CO LTD +1
Transplantable ultrathin nano-porous gold film and method for preparing the same
The preparation method for transplantable ultrathin nano porous gold film comprises: preparing Au-Cu alloy with vacuum evaporation method, thermal annealing, and removing alloy with acidic solution. This product can be used in catalysis, bio-sense, porous electrode and other fields as well as nano grating and non-linear optics fields for special optical and high light transmission features
Owner:FUDAN UNIV
Method for manufacturing nanoscale grating based on polydimethylsiloxane (PDMS)
InactiveCN102879845ASimple processEasy to operatePhotomechanical apparatusDiffraction gratingsMulti materialProcess conditions
The invention relates to the technical field of grating manufacturing and particularly relates to a method for manufacturing a nanoscale grating based on PDMS. The method solves the problems that existing nano grating manufacturing methods are expensive in used devices, severe and complex in process condition, difficult to control, high in manufacturing cost and long in period. The method for manufacturing the nanoscale grating based on the PDMS comprises the steps of a, manufacturing a grating masterplate (5) through a photoetching technology; b, transferring a grating pattern of the grating masterplate (5) in Step a onto a PDMS film (6) to manufacturing a PDMS film (7) with the grating pattern; and c, clamping the PDMS film (7) with the grating pattern on an electrically-controlled translation platform. The nanoscale grating which is obtained through the method is formed on the PDMS film firstly, the PDMS is a good intermediate mould material, and reverse moulding is conducted on the PDMS film again, so that nanoscale gratings of various other materials can be manufactured.
Owner:ZHONGBEI UNIV
Time-division multiplexing-based color holographic three-dimensional display method and system
The invention belongs to the field of computer-generated holography and three-dimensional display, and particularly relates to a time-division multiplexing-based color holographic three-dimensional display method and system. By the display system, a multi-view two-dimensional image of a color target object is obtained by a method of CCD camera or computer graphics; a group of target images suitable for phase-type hologram calculation are generated after a preprocessing transformation process; a corresponding phase-type hologram is calculated by an iterative Fourier transform algorithm and is loaded to a spatial light modulator in a time-division manner; a synchronization control circuit controls red, green and blue three-color light sources to synchronously display in sequence; and three monochromatic holographic reconstructed images are generated on a reconstruction plane in a time-division manner, and corresponding reconstructed image pixels are directionally diffracted to the position at which a pixel-type nano grating is fixed to form different viewpoints, thereby obtaining multi-view color reconstructed images and achieving true color three-dimensional display. The hologram is quickly refreshed and loaded by combining the spatial light modulator, so that the multi-view real color full-parallax dynamic holographic three-dimensional reconstruction of the target object is achieved.
Owner:SUZHOU UNIV
Bridge type nano grating tunable vertical cavity surface emitting laser and preparation method thereof
InactiveCN102013633AEnhanced inhibitory effectFunction increaseLaser detailsSemiconductor lasersVertical-cavity surface-emitting laserElectron
The invention relates to a surface nano grating-based wavelength tunable vertical cavity surface emitting laser and a preparation method, which belong to the field of semiconductor photoelectronic devices. The laser has an inner cavity contact laminated structure; a positive electrode layer (1) is arranged on a P-type ohmic contact layer (5); an air-gap layer (12), a gallium arsenide layer (2a), and a gallium aluminum arsenide layer (2b) are arranged above the ohmic contact layer (5) in turn; a gallium aluminum arsenide oxidation current limitation layer (6), an active region (7), an n-type gallium aluminum arsenide layer (8a), an n-type gallium arsenide (8b), an n-type gallium arsenide substrate (10), and a substrate electrode layer (11) are formed below the ohmic contact layer (5) in turn; and a nano grating (15) is positioned on the surface of the gallium arsenide layer (2a). The thickness of the air-gas layer can be subjected to mechanical adjustment of an electrostatic force and the like, so that photon phase change can be transmitted in the resonant cavity of a laser and an outputted light beam passes through the nano grating (15) immediately; therefore, a wavelength and polarization can be simultaneously controlled.
Owner:BEIJING UNIV OF TECH
Methods of making organic photovoltaic cells having improved heterojunction morphology
ActiveUS20130037109A1Enhanced light absorptionSolid-state devicesSemiconductor/solid-state device manufacturingHeterojunctionAcceptor
Methods of making a photovoltaic device with an organic liquid precursor having electron donor, electron acceptor, and liquid carrier are provided. The liquid precursor is applied to an electrode. A gas permeable layer / stamp contacts and applies pressure to the organic liquid precursor removing liquid carrier to form a solid active material with uniform interpenetrating network domains of electron donor / acceptor materials. A two-step process is also contemplated. A liquid precursor with either electron donor or acceptor is applied to an electrode, contacted under pressure with a first stamp having a nanoscale pattern, thus forming a solid with a patterned surface. Then, a second liquid precursor with the other of the electron donor or acceptor is applied to the patterned surface, contacted with a second stamp under pressure to form the active material. A transparent conducting electrode with material nanograting can be formed. The methods also include continuous processing, like roll-to-roll manufacturing.
Owner:RGT UNIV OF MICHIGAN
Prestress-assisted nanoimprint-based high-density diffraction grating making method
ActiveCN108761600AShort cycleSimple processPhotomechanical apparatusDiffraction gratingsHigh densityReduction ratio
The invention relates to the technical field of grating making and provides a prestress-assisted nanoimprint-based high-density diffraction grating making method. The method comprises the following steps: a, a nanoimprint process is used to make a grating master plate; b, the grating pattern of the master plate in the step a is transferred to a PDMS thin film to make a patterned PDMS grating thinfilm; c, a PDMS flexible substrate is made; d, the PDMS flexible substrate is stretched to a certain length; e, the patterned PDMS grating thin film is attached to a pre-stretched PDMS flexible substrate; and f, the prestress is released. The grating cycle acquired by the method can be controlled through adjusting the prestress, the maximum reduction ratio of the grating cycle is about 25%, the technical defect that the traditional nanoimprint process can not make a cycle size smaller than a die can be solved, and the problems of expensive devices, complicated process conditions, difficult control, high making cost and long cycle in the existing nano grating making method can be solved.
Owner:XI AN JIAOTONG UNIV
Color film substrate, preparation method thereof and quantum dot display device comprising same
ActiveCN109300395APixel area highCommercializeNon-linear opticsIdentification meansColor filmQuantum dot display
The invention provides a color film substrate. The color film substrate comprises a substrate body, a black matrix, a color film layer, a first planarization layer, a second planarization layer, a grating layer and a third planarization layer, wherein the black matrix is formed on the substrate body and comprises a plurality of openings and a bank part which surrounds the openings and forms a plurality of pixel areas, and the bank part comprises a black dye; the color film layer is formed in each opening and comprises a color quantum dot material layer formed in at least part of the opening regions; the first planarization layer covers the color film layer, and the bank part is exposed out of the first planarization layer; the second planarization layer covers the first planarization layerand the bank part, and the distance between the surface, relative to the surface of the first planarization layer and corresponding to the bank part, of the second planarization layer and the substrate body is smaller than the distance between the surface, corresponding to the pixel areas, of the second planarization layer and the substrate body; the grating layer is formed on the second planarization layer; the third planarization layer covers the grating layer. According to the substrate, the planarization layers with the high pixel areas and low black bank areas are formed so that nano-grating of the pixel areas can be well formed.
Owner:BOE TECH GRP CO LTD
Mid-infrared light detector and preparation method thereof
ActiveCN110047957ADisadvantages of improving weak light absorptionPromote absorptionFinal product manufactureSemiconductor devicesPhotovoltaic detectorsMid infrared
The invention discloses a mid-infrared light detector and a preparation method thereof. The mid-infrared light detector comprises a monocrystalline silicon substrate, an insulating layer, a continuousgraphene layer, a quantum dot layer and a nano grating contact electrode covering the quantum dot; the monocrystalline silicon substrate, the insulating layer, the continuous graphene layer, the quantum dot layer and the nano grating contact electrode covering the quantum dots are uniformly distributed on a PVC substrate. The mid-infrared light detector is composed of a periodic nano grating array, which has a coupling effect on incident light beams that can effectively overcome the defect of weak light absorption of a graphene photoelectric detector, and the prepared photoelectric detector has obvious absorption on the spectrum of a mid-infrared band and has a higher light response rate.
Owner:NANJING UNIV OF POSTS & TELECOMM
Self-supporting nano-transmission grating with high duty ratio and manufacturing method thereof
ActiveCN102331593AIncrease duty cycleHigh diffraction efficiencyPhotomechanical apparatusDiffraction gratingsNano structuringHigh density
The invention, which belongs to the MEMS field, discloses a self-supporting nano-transmission grating with a high duty ratio and a manufacturing method thereof. The grating comprises a nano-transmission grating supporting structure 1, a nano-transmission grating line fixing structure 2, nano-transmission grating lines 3, and a gold absorber 4. The manufacturing method comprises two parts: manufacture of a nano grating mask and manufacture of a nano transmission grating. More particularly, the method comprises the following steps that: on the condition of one-time alignment technology based ona normal lithography machine, partial exposure is carried out on a micronsized line and a metal is etched, so that the micronsized line is changed into a nano-line and graphic conversion of a size ofa nano structure is realized; and then the one-time alignment technology is carried out again to realize manufacture of a nano-transmission mask with a high duty ratio; at last, a nano-transmission grating with a high depth to width ratio is manufactured by taking the manufactured mask and using high density plasma etching. According to the invention, the self-supporting nano-transmission gratinghas advantages of a high depth to width ratio and a large duty ratio; and defects that a technology process is complex and costs are high in the prior art can be overcome.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Centrifugal triaxial MEMS inertial measurement unit device for nano-optical grating
PendingCN107449423AReasonable structural designHigh resolutionAcceleration measurement using interia forcesNavigation by speed/acceleration measurementsPhysicsInertial measurement unit
The invention relates to a centrifugal triaxial MEMS inertial measurement unit device for nano-optical grating. The device mainly structurally comprises an upper base plate, a movable optical grating layer, a fixed optical grating layer, a lower base plate, photoelectric detectors, a detection beam, a linking block, a mass block, movable optical gratings, a boss, laser sources and leads, wherein the photoelectric detectors and the leads are arranged in the upper base plate, the movable optical grating layer is provided with a support framework, the mass block, the detection beam and the linking block, the movable optical gratings are arranged in the center of the mass block, the fixed optical grating layer is provided with fixed optical gratings, and the laser sources and the leads are arranged in the lower base plate. The device does not need to be driven and has the advantages of high measuring range, simple structure and small cross coupling error and transverse error.
Owner:ZHONGBEI UNIV
Method of preparing high-density grating through femtosecond laser weak ablation and small-included-angle interference
InactiveCN111060999AStabilized Dual Beam CoherenceGuaranteed stabilityDiffraction gratingsLaser beam welding apparatusLight spotFacula
The invention discloses a method of preparing a high-density grating through femtosecond laser weak ablation and small-included-angle interference. A double-beam laser interference system is built, and etching of a sample is carried out through a light spot obtained through the convergence of a cylindrical lens at a small included angle. In the etching process, the interaction process of the laserand the material is accurately controlled, and under weak ablation, the sample hardly removes any material, and the highly uniform nano grating structure is obtained on the sample through etching. Asample is moved in the Z-axis interference fringe direction by controlling a precise five-axis translation table, and the long-strip-shaped grating with the width being the beam diameter can be prepared by utilizing the characteristic that femtosecond laser induces growth of self-organizing periodic fringes. 0.8-0.9 time of the diameter of the light beam is further translated, and the sample is continuously moved in a direction parallel to the long-strip-shaped grating and opposite to the long-strip-shaped grating, so as to prepare the large-area highly-uniform nano grating. The method has obvious advantages in the aspect of preparing large-size and high-density reticle grating components, and has the advantages of strong anti-interference capability, convenience in operation, economy andhigh efficiency.
Owner:EAST CHINA NORMAL UNIV
Adjustable nano grating, nano grating accelerometer and processing method of adjustable nano grating or nano grating accelerometer
InactiveCN102096133ASimple structureHigh sensitivityAcceleration measurementDiffraction gratingsAccelerometerScanning electron microscope
The invention discloses an adjustable nano grating, a nano grating accelerometer and a processing method of the adjustable nano grating or the nano grating accelerometer. The adjustable nano grating comprises a movable sub-grating and a fixed sub-grating, and is processed by adopting a focused ion beam / scanning electron microscope double-beam system, the accuracy is high and the period consistency is good. The movable sub-grating and a plurality of single gratings of the fixed sub-grating are arranged in an upper-lower cross manner, and a beam is connected with mass blocks. The nano grating accelerometer comprises laser light sources, an accelerometer chip and a photoelectric detector; and the accelerometer chip comprises an adjustable nano grating. The adjustable nano grating is used as a central element of a sensing part, and jointly form a sensing head together with the mass blocks and the beam; and the light sources irradiate the adjustable nano grating, the photoelectric detector and a detection circuit are utilized for carrying out signal acceleration detection, and when the acceleration is calculated, the vector diffraction theory is used as a basis. In the invention, the structure is simple and the sensitivity is high.
Owner:BEIHANG UNIV +1
Micromechanical gyroscope for nano-optical grating
PendingCN107449415ASuitable for miniaturizationImprove reliabilitySpeed measurement using gyroscopic effectsGyroscopes/turn-sensitive devicesGyroscopeEngineering
The invention relates to a micromechanical gyroscope for nano-optical grating. The micromechanical gyroscope mainly structurally comprises an upper base plate, a bonding frame body, a lower base plate, a support frame body, an outer mass block, an inner mass block, a driving mechanism, detection mechanisms, movable optical gratings, a driving magnet body, a detection magnet body and fixed optical gratings, wherein the support frame body, the inner mass block, the outer mass block, the driving mechanism and the detection mechanisms are arranged on the upper base plate, the movable optical gratings are arranged in the center of the inner mass block, the bonding frame body is fixedly connected with the lower base plate and the upper base plate, the driving magnet body, the detection magnet body and the fixed optical gratings are symmetrically arranged on the lower base plate, and the fixed optical gratings are arranged in the center of the lower base plate. The micromechanical gyroscope is of a symmetrical integral structure, is used for detecting a weak Coriolis force by virtue of an optical effect and has the advantages of high detection precision, reasonable and compact structure, high sensitivity and good reliability; and compared with the prior art, the detection precision is increased by 1-2 magnitude orders.
Owner:ZHONGBEI UNIV
Organic light-emitting diode with linearly polarized emission
ActiveCN106935727ARealize direct linearly polarized output lightSolid-state devicesSemiconductor/solid-state device manufacturingDielectricDisplay device
The invention discloses an organic light-emitting diode (OLED) with linearly polarized emission, and belongs to the technical field of organic photoelectric display devices. The OLED comprises a substrate, a first transport layer, an organic light-emitting layer, a second transport layer and a composite back electrode which are sequentially arranged from the top down, wherein nano grating structures are respectively arranged on the first transport layer, the organic light-emitting layer, the second transport layer and the composite back electrode; the nano grating structures are periodic array gratings; a period of each grating is 70-180nm; a duty ratio of each grating is 0.4-0.7; the groove depth of each grating is 20-80nm; and a metal dielectric nano polarized grating structure is arranged on the upper surface of the substrate. The OLED with the linearly polarized emission realizes direct linearly polarized emission of an OLED device; a preparation technology of the OLED device is compatible with low-cost soft nanoimprint photolithography; and the OLED device is applicable to rigid, flexible and tensile substrate materials, and has a potential practical value in the fields of linearly polarized light navigation, target counter-stealth, identification and the like.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY
Dynamic nano-inscribing for continuous and seamless metal and polymer nanogratings
ActiveUS20120038085A1Modulus is reducedImprove toughnessNanoopticsCeramic shaping apparatusHeating timeDisplay device
Nanoscale grating structure can be utilized in many practical applications in optics, flat-panel displays and bio-sensors. A Dynamic Nano-Inscribing (Dynamic Nano-Inscribing) technique is disclosed for directly creating large-area, truly continuous nano-grating patterns in a variety of metal or polymer materials with feature size down to sub-50 nm and at very high speed (10 cm / sec). Dynamic Nano-Inscribing is carried out under either ambient temperature or with a brief heating time on the order of ten microseconds, which minimizes damage on UV or thermo-sensitive functional materials.
Owner:RGT UNIV OF MICHIGAN
Gas refracting index sensor based on nanometer cavity antenna array
InactiveCN101846622APrecise measurement of refractive indexHigh sensitivityPhase-affecting property measurementsGratingRefractive index
The invention relates to a sensor used for testing the value of the gas refracting index, which is characterized in that the structure consists of a metal optical grating layer, an air gap separation layer and a metal substrate layer. When the incoming wavelength is ranged from 1548 to 1553 nanometers and the incoming angle is ranged from 22 to 24 degrees, the sensitivity of the gas sensor is as high as 2800 nanometers / RIU. Particularly, when the period of the metal optical grating is 1100 nanometers, the thickness of the optical grating is 20 nanometers, and when the air gap separation layer thickness is 30 nanometers, the flexibility of the sensor is as high as 3050 nanometers / RIU.
Owner:CHONGQING UNIV OF ARTS & SCI
Preparation method of single-layer nano-metal grating
InactiveCN104503012AHigh resolutionAvoid etch processPhotomechanical apparatusDiffraction gratingsAdhesiveNano manufacturing
The invention relates to a preparation method of a single-layer nano-metal grating and belongs to the technical field of nano-manufacturing. The preparation method comprises the steps of 1) firstly coating imprinting adhesive on a substrate, then pressing an imprinting template with a nano-grating pattern into the imprinting adhesive to obtain an imprinting adhesive layer of a one-dimensional nano-grating structure, and finally removing residual imprinting adhesive; 2) depositing a metal layer on one side, with the nano-grating pattern, of the substrate, forming an upper layer metal nano-grating layer on the imprinting adhesive layer, and forming a lower layer metal nano-grating layer on the substrate; 3) removing the imprinting adhesive layer to obtain the single-layer nano-metal grating. The preparation method of the single-layer nano-metal grating has the beneficial effects that the process steps are simple, the operation is easy to perform, the cost is low, the manufacturing cycle is short and the preparation method is suitable mass production.
Owner:DALIAN UNIV OF TECH
Non-resonance triaxial angular rate sensor for nano-optical grating
PendingCN107449411ASuitable for miniaturizationEasy to integrateSpeed measurement using gyroscopic effectsUsing optical meansPhotovoltaic detectorsAngular rate sensor
The invention relates to a non-resonance triaxial angular rate sensor for a nano-optical grating. The non-resonance triaxial angular rate sensor mainly structurally comprises an upper base plate, a movable optical grating layer, a fixed optical grating layer, a lower base plate, photoelectric detectors, a detection beam, a linking block, a mass block, a movable optical grating, a boss, laser sources and leads, wherein the four photoelectric detectors and the leads are arranged in the upper base plate, the movable optical grating layer is provided with a support framework, the mass block with the movable optical grating, the detection beam and the linking block, the fixed optical grating layer is provided with four fixed optical gratings, and the four laser sources and the leads are arranged in the lower base plate. The non-resonance triaxial angular rate sensor does not need to be driven and has the advantages of high measuring range, simple structure, small cross coupling error and small external impact or vibration influence.
Owner:ZHONGBEI UNIV
Method and system for generating chirped Airy vortex electron plasma wave
ActiveCN110737089AControl phaseControl amplitudeOptical elementsParticle physicsIntensity modulation
The invention discloses a method and system for generating a chirped Airy vortex electron plasma wave. The method comprises the following steps: emitting an electron beam by using an electron gun; performing cubic phase modulation through a nano holographic diffraction pattern; performing Fourier modulation on the electron beam through a magnetic lens to obtain an Airy electron beam; generating aphase vortex by using the generated Airy electron beam through a binary mask of the holographic diffraction pattern printed with a forked dislocation nano grating to obtain an Airy vortex electron beam; modulating the Airy vortex electron beam by using a chirp generator, and performing intensity modulation driving on the electron beam by using a radio frequency signal to obtain an intensity pulsesignal loaded with radio frequency information; performing phase adjustment by adjusting the position of a direct current bias working point in an intensity modulator to control the loaded chirp; anddriving the electron beam into an unmagnetized collision-free electron plasma to cause corresponding electron disturbance to obtain the chirped Airy electron plasma wave. By adoption of the method andsystem disclosed by the invention, the cost is saved, and the generation of the beam can be well controlled.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Manufacturing method of micro-polarizer array based on metal nano gratings
ActiveCN105866873ASolve the problem of low light transmittanceSimple processPhotomechanical apparatusPolarising elementsNanowirePolarizer
Owner:UNIV OF SCI & TECH OF CHINA
Pine tree-shaped metal nano-grating
ActiveCN108802878ARealize resonance absorptionMaterial nanotechnologyPhotomechanical apparatusNanostructureNanometre
The present invention relates to a pine tree-shaped metal nano-grating. The pine tree-shaped metal nano-grating comprises a substrate and a plurality of three-dimensional nanostructures distributed inan array on the surface of the substrate; the three-dimensional nanostructure comprises a first cuboid structure, a second cuboid structure, and a triangular prism structure, wherein the first cuboidstructure is disposed on a surface of the substrate, the second cuboid structure is disposed on a surface of the first cuboid structure which is far away from the substrate, and the triangular prismstructure is disposed on a surface of the second cuboid structure which is far away from the first cuboid structure, the width of the bottom surface of the triangular prism structure is equal to the width of the upper surface of the second cuboid structure and is greater than the width of the upper surface of the first cuboid structure, and each of the first cuboid structure and the triangular prism structure is a metal layer.
Owner:TSINGHUA UNIV +1
An organic photomultiplier detector based on surface plasmon polariton
ActiveCN109037454AQuick responseSolid-state devicesSemiconductor/solid-state device manufacturingPolystyreneMetal thin film
The invention relates to the field of organic photomultiplier detectors, an organic photomultiplier detector based on surface plasmon polariton uses an indium tin oxide ITO as an anode layer and poly(3, 4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT: PSS) as an anode layer, and uses any one of 3-hexylthiophene P3HT, poly[[9-(1-octylnonyl)-9H-carbazole-2, 7-dibasic]-2, 5-thiophene diyl-2, 1, 3-benzothiadiazole-4, 7-dibasic-2, 5-thienyl diyl (PCDTBT, PSBTBT: PC71BM] as a donor material of an organic active layer, and uses fullerene derivative PCBM as an acceptor material of the organic active layer, the donor material and the acceptor material constitute the organic active layer, and an integrated metal nano-grating matrix and a metal thin film are used as a cathode layer, and the nano-grating matrix is inlaid in the organic active layer.
Owner:TAIYUAN UNIV OF TECH
Glasses-free three-dimensional display device based on active light-emitting display technology
Owner:SVG TECH GRP CO LTD +1
Manufacturing method of nano grating with high depth-to-width ratio
PendingCN111606300AGood optical treatmentDecorative surface effectsSolid-state devicesNanoimprint lithographyNanostructure
The invention discloses a manufacturing method of a nano grating with a high depth-to-width ratio. The method comprises: manufacturing an original mold: manufacturing the original mold with a gratingstructure with a low depth-to-width ratio; carrying out nanoimprint lithography, and copying the grating structure through a nanoimprint lithography process to prepare a PDMS soft template; spin-coating nanoimprint lithography glue on a glass substrate to form a pattern transfer layer, covering the pattern transfer layer with a PDMS soft template, and separating and demolding after curing; removing the imprinting adhesive residual layer; plating a layer of metal on the glass substrate to form a metal layer; soaking and stripping the whole glass substrate from the falling pattern transfer layerand the metal layer on the falling pattern transfer layer to form a metal nanostructure mask; and etching the surface to form a nano grating structure with a high depth-to-width ratio on the surfaceof the glass substrate. According to the invention, the nano grating substrate with high depth-to-width ratio can be obtained by further processing on the basis of the nano grating substrate with lowdepth-to-width ratio, and the nano-scale grating structure with high depth-to-width ratio is obtained.
Owner:杭州欧光芯科技有限公司
Biomimetic direction analyzer
ActiveCN105547236ALow costSimple structureAngle measurementDirection informationOptical polarization
The invention discloses a biomimetic direction analyzer. The biomimetic direction analyzer comprises a direction information acquisition device and a data processing module. The direction information acquisition device is used for detecting skylight polarization characteristics and converting an optical signal into an electric signal. The data processing module receives the electric signal transmitted through the direction information acquisition device and computes and processes the electric signal so that direction information is acquired. In the biomimetic direction analyzer, all nano-gratings and photosensitive pixel arrays which are located below the nano-gratings and are corresponding to the nano-gratings form a polarization-sensitive unit and the polarization-sensitive unit realizes incident skylight polarized detection and photoelectric conversion. Through use of a stable distribution way of a sky visible light polarization state in air, the direction information acquisition device and the data processing module, direction information is deduced and calculated.
Owner:DALIAN UNIV OF TECH
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