491 results about "Laser direct writing" patented technology

The invention provides a diffractive optical element design and manufacturing integration method based on gray level laser direct writing photoetching, which comprises the following steps that: a manufacturing simulator and a wave optical simulator are established, and the manufacturing simulator represents the spatial frequency response of an optical system through a low-pass filtering model; a mapping relation between exposure dose and a developing result is established by combining nonlinear response of photoresist, and the wave optical simulator predicts optical performance by utilizing output of the manufacturing simulator and combining a wave optical theory; by setting initial manufacturing parameters and performing iterative optimization, the surface appearance of the photoresist is dynamically adjusted to be close to the target optical performance, the optimization process is combined with an automatic differential technology, a gradient optimization algorithm and a block optimization strategy, and the calculation efficiency is improved; and the optimized parameters are used for processing gray laser direct writing equipment to manufacture the diffractive optical element. The problem of manufacturing deviation caused by the optical proximity effect in the prior art can be solved, and meanwhile the overall performance of the diffraction optical element is remarkably improved.

The invention discloses a super-resolution laser direct writing and imaging method and device based on a two-photon and stimulated radiation loss effect, and the method comprises the steps: adding a photoinitiator into photoresist, and achieving two-photon STED high-precision micro-nano structure laser direct writing through the two-photon absorption effect and the stimulated radiation loss effect of the photoinitiator; and meanwhile, the two-photon STED super-resolution microscopic imaging is carried out on the inscribed structure by utilizing the fluorescence luminescence characteristic, the two-photon absorption characteristic and the stimulated depletion (STED) characteristic of the two-photon STED super-resolution microscopic imaging of the two-photon STED super-resolution microscopic imaging of the inscribed structure. According to the invention, the two-photon and STED effects of the initiator are utilized, so that super-resolution inscribing and imaging can be realized at the same time, and the components of the photoresist are simplified. Besides, the same exciting light and loss light can be respectively utilized during inscribing and imaging, so that high-precision inscribing and super-resolution imaging can be simultaneously realized in one optical system, and the complexity of the system can be effectively simplified by multiplexing the optical paths of the exciting light and the loss light for inscribing and imaging.

The utility model relates to a photoetching machine for automatically switching high multiplying power and low multiplying power, and belongs to the technical field of laser direct writing equipment. According to the utility model, by arranging the automatic switching photoetching system, not only can automatic switching of objective lenses with different multiplying powers be realized, but also accurate photoetching, alignment and focusing can be realized, so that pollution to the environment of an optical machine room caused by manual switching of the objective lenses by a user is avoided, and the photoetching process is not influenced; and meanwhile, real-time focusing alignment can be carried out through the focusing system, so that the accuracy of the photoetching process is further improved.

The invention provides an immersed laser direct-writing photoetching method and device. The immersed laser direct-writing photoetching device comprises a laser light source, a laser beam splitter, an acousto-optic modulator, a dichroscope-spectroscope module, an acousto-optic deflector, an objective lens, an immersion head and a motion platform, the motion platform is used for placing a wafer to be photoetched; the laser light source, the laser beam splitter, the acousto-optic modulator and the dichroscope-spectroscope module are sequentially arranged along a first straight line, the dichroscope-spectroscope module is arranged in a deflection mode relative to the first straight line, and the acousto-optic deflector, the objective lens, the immersion head and the motion platform are sequentially arranged along a second straight line; laser generated by the laser light source sequentially passes through the laser beam splitter and the acousto-optic modulator and is emitted to the dichroscope-spectroscope module, the dichroscope-spectroscope module selectively reflects laser with specific wavelength, and the reflected laser sequentially passes through the acousto-optic deflector, the objective lens and the immersion head and is emitted to a wafer to be photoetched. And high-speed and high-flux parallel laser scanning direct writing photoetching can be realized.

The invention discloses a fiber bragg grating femtosecond laser direct writing system and method based on light field regulation and control. The system comprises a femtosecond laser source, a polarization control module, a light beam expanding module, a light field modulation module, a 4f filtering imaging module, an oil immersed objective lens, a precision positioning and optical fiber clamping module, an observation module and a computer control module. The method comprises the following steps: firstly, fixing a standard single-mode optical fiber to be processed on a three-dimensional precision displacement platform; then programmable wavefront modulation is carried out on the femtosecond laser through a light field modulation module, and a multi-focus array is generated; then focusing the multi-focus array into the fiber core through an oil-immersed objective lens to realize one-time parallel inscribing of a plurality of refractive index modulation RIM regions; and finally, the computer control module controls the three-dimensional precision displacement platform to move at a constant speed in the axial direction of the optical fiber, and parallel integrated inscribing of a plurality of FBG structures is completed. According to the invention, the inscribing precision and inscribing efficiency of fiber bragg grating femtosecond laser direct writing are improved.

The invention discloses a manufacturing method of an insulating printed circuit board based on high voltage resistance. The manufacturing method comprises the following steps: S1, mixing ceramic powder and polyimide, and heating and curing to form a base material; s2, pollutants on the surface of the base material are removed through a plasma cleaning technology, and the binding force of the base material and a subsequent layer is improved; s3, transferring a circuit pattern to the surface of the base material on the base material through a laser direct writing technology; s4, performing deposition on the circuit pattern through a vacuum deposition technology to form a copper film layer; s5, performing mask manufacturing by using photoresist, and removing the copper film layer which is not covered by the mask through wet or dry etching to form a circuit; s6, a laser drilling technology is used for drilling micropores, and the inner walls of the micropores are metalized through a chemical copper plating technology; and S7, after circuit manufacturing is completed, ultraviolet light curing epoxy resin is used as an insulating coating. The circuit board material and the implementation method are innovated, so that the problems in the prior art are solved, and the voltage resistance, the insulating property and the reliability of the circuit board are improved.

The embodiment of the invention provides a laser direct-writing imaging control method, a laser direct-writing imaging control system and related equipment, which are used for improving the precision and the consistency of laser direct-writing imaging. The method provided by the embodiment of the invention comprises the following steps: calculating a difference value Di between a theoretical position and a fitting coordinate of each laser light source, wherein i is a laser light source number; calculating a small-cycle scanning line number L = (Di (max)-Di (min)) / P + 1; after the laser array is reversely moved for Di (max) in the direction perpendicular to the scanning direction, the laser array is controlled to conduct small-period scanning; in each small-cycle scanning process, L times of scanning are sequentially carried out, in each scanning process, only the laser light source with the current position located at the theoretical exposure position is started and scans the corresponding pixel row, and after each time of scanning is completed, one pixel interval is moved in the vertical direction of scanning; and after each small-period scanning, moving S1 relative to the initial position of the previous small period in the vertical direction of the scanning direction, and then continuing the next small-period scanning until C times of small-period scanning are completed.

According to the technical scheme, the second harmonic laser direct writing system comprises a control system and a sensor module, the control system comprises an embedded controller and a closed-loop control system, the embedded controller is responsible for receiving sensor data and sending a control instruction, the closed-loop control system is used for adjusting the temperature and the angle in real time through the sensor data, and the temperature and the angle are adjusted in real time. And control software based on machine learning or an optimization algorithm, a temperature sensor is used on the sensor module to monitor the temperature of the nonlinear optical crystal in real time, an optical sensor monitors the intensity and phase of fundamental frequency light and second harmonic light, and an angle sensor monitors and feeds back the cutting angle of the crystal. An optimized nonlinear optical crystal phase matching technology is adopted, phase matching of fundamental frequency light and second harmonic light is ensured by accurately adjusting the cutting angle and temperature of the crystal, in addition, the stability of a laser light source is improved through improved design, the conversion efficiency of the second harmonic light is improved, and the laser output power is enhanced.

The embodiment of the invention provides a laser direct-writing image detection method, a laser direct-writing image detection system and related equipment, which realize accurate positioning of an image deformation area position on a complete exposure breadth and measurement of deformation quantity by detecting the offset of light spots of different lasers in the horizontal direction at the same moment. The method comprises the following steps: arranging a plurality of groups of non-repeated binary images to be ranked in the horizontal direction to form an image sequence, and carrying out binarization processing on the image sequence to obtain the position of a laser exposure point; in a synchronous scanning process of a plurality of lasers in the laser array, controlling each laser to expose a mapping position of an exposure point on a photosensitive coating in an image sequence by using a synchronous switch instruction so as to respectively form a latent image of the image sequence in a respective scanning area of each laser; and if the plurality of developing image sequences are not aligned in the horizontal direction from the target binary images in the same sequence, detecting coordinate values of difference points of the target binary images in each developing image sequence in the horizontal direction.

The invention discloses a WS2 (Er < 3 + > + Yb < 3 + >) / WSe2 (Er < 3 + > + Yb < 3 + >) optical detector based on a rare earth ion co-doping technology, and relates to the field of a two-dimensional material rare earth ion co-doping technology and a two-dimensional material microcell fixed-point transfer technology, a WS2 (Er < 3 + > + Yb < 3 + >) layer synthesized by a chemical vapor deposition method is successfully transferred to a WSe2 (Er < 3 + > + Yb < 3 + >) surface layer by using a microcell fixed-point transfer method, and a WS2 (Er < + > Yb) / WSe2 (Er < + > Yb) vdW heterojunction is prepared; the method comprises the following steps: sequentially spin-coating LOR photoresist and S1805 photoresist on the surface of a sample 1, respectively carrying out soft baking treatment to obtain a sample 1, carrying out laser direct writing on a selected area to obtain a sample 2, removing metamorphic photoresist from the obtained sample 2 by using a developing solution, cleaning to obtain a sample 3, plating chromium and gold on the sample 3 by using a magnetron sputtering technology to obtain a sample 4, and carrying out drying to obtain a sample 5; and soaking the sample IV in acetone to dissolve the photoresist, and stripping a redundant metal layer under a microscope to obtain the Van der Waals heterojunction electrode device. Therefore, the invention provides the WS2 (Er < 3 + > + Yb < 3 + >) / WSe2 (Er < 3 + > + Yb < 3 + >) light detector based on the rare earth ion co-doping technology, the rare earth doping concentration of the two-dimensional material is improved, and excellent photoelectric properties of the WS2 (Er < 3 + > + Yb < 3 + >) and WSe2 (Er < 3 + > + Yb < 3 + >) two-dimensional semiconductor material are obtained.

The invention relates to a moisture power generation device and a preparation method and application thereof, and belongs to the technical field of new energy materials. The moisture power generation device comprises a first electrode, a second electrode, a photo-initiation hydrogel active material and a container, the second electrode and the photo-initiation hydrogel active material are sequentially loaded in a container; the first electrode covers the surface of the photo-initiation hydrogel active material; the first electrode comprises a carbon surface electrode with a porous structure and a thermal initiation hydrogel active material loaded on the surface of the carbon surface electrode; the carbon surface electrode with the porous structure is obtained by carbonizing the carbonizable polymer film through laser direct writing. The moisture power generation device has the advantages of being easy to assemble, suitable for large-scale production, capable of continuously generating power and high in power generation efficiency.

The invention provides a multi-core optical fiber sensor which comprises a multi-core optical fiber and a deformation sensitive area, the deformation sensitive area is an area where a spiral dislocation long-period grating is located, and the spiral dislocation long-period grating comprises multiple sections of multi-core optical fibers which sequentially rotate by a fixed angle anticlockwise or clockwise in the axial direction of the optical fiber and are sequentially welded; the super-continuum spectrum light source is connected with one end of the multi-core optical fiber through the input single-mode optical fiber and the fan-in device; and the spectrograph is connected with the other end of the multi-core optical fiber through the output single-mode optical fiber and the fan-out device. The optical fiber sensor has the advantages of small size, high integration level and the like, can be applied to complex deformation multi-parameter sensing by demodulating the sensing characteristics of a plurality of fiber cores, can manufacture a long-period grating in a spiral dislocation welding mode, can effectively reduce the cost compared with laser direct writing, phase mask and other modes, and only exists in the optical fiber in a microstructure forming the sensor, so that the cost is reduced. The sensor has high mechanical strength and strong applicability.

The invention discloses a glass fiber fabric with an electric heating function and a preparation method, and belongs to the technical field of functional fabric materials. The method comprises the following steps: adding a graphene precursor polymer into an organic solvent, and carrying out stirring and ultrasonic treatment to obtain a graphene precursor polymer solution; the preparation method comprises the following steps: dipping and drying a glass fiber fabric in a graphene precursor polymer solution, coating the surface of the glass fiber fabric with a graphene precursor polymer layer, repeatedly dipping and drying for multiple times, and curing to obtain the glass fiber fabric with the graphene precursor polymer layer; and pasting the glass fiber fabric with the graphene precursor polymer layer on a flat plate material, performing laser direct writing in an air environment according to a preset pattern path, and synchronously performing graphene treatment and patterning treatment on the graphene precursor polymer to prepare the glass fiber fabric with the electric heating function. The preparation process is simple and is compatible with construction of the conductive graphene layer with glass fiber structural characteristics, and the LIG technology can be used for in-situ generation of graphene on the surface of the glass fiber fabric, so that a flexible glass fiber fabric material with an electric heating function is obtained.

The invention provides a gas sensor and a method for preparing the gas sensor through laser direct writing. The method comprises the following steps: enabling a metal electrode to be in contact with laser direct writing ink, wherein the laser direct writing ink comprises a nickel source, a porous structure guiding agent and a solvent; laser irradiates a specified contact area of the metal electrode and the laser direct-writing ink, so that the metal electrode absorbs the laser to generate heat so as to form a hydrothermal reaction area in the specified contact area, and the laser direct-writing ink in the hydrothermal reaction area is subjected to a hydrothermal reaction, so that porous nickel hydroxide grows on the metal electrode, and a precursor structure is obtained; and carrying out annealing treatment on the precursor structure so as to convert the porous nickel hydroxide into porous nickel oxide, thereby obtaining the gas sensor. The gas sensor provided by the invention has the porous nickel oxide which has a relatively large specific surface area, so that the effective contact area between the gas sensor and target gas can be increased, and the gas responsivity of the gas sensor is improved.

The invention discloses an all-fiber structure pulse laser based on a superfine single-crystal fiber and a preparation method thereof. The all-fiber structure pulse laser comprises a gain single-crystal fiber and a pulse modulation single-crystal fiber, and the gain single-crystal fiber and the pulse modulation single-crystal fiber form a superfine single-crystal fiber heterogeneous bonding structure through thermocompression bonding; the gain single-crystal optical fiber serves as a laser gain medium, the pulse modulation single-crystal optical fiber serves as a saturable absorber, the gain single-crystal optical fiber is provided with a high-reflection grating, the high-reflection grating and an oblique-angle low-reflection end arranged at the tail end of the pulse modulation single-crystal optical fiber form a resonant cavity, and pump light is input into the gain single-crystal optical fiber and enters the resonant cavity through the high-reflection grating. And the oblique-angle low-reflection end outputs pulse laser. The gain section and the modulation section are fused into an integrated structure through the superfine single crystal optical fiber bonding technology, the high-reflection grating is inscribed through the femtosecond laser direct writing technology, low-reflection-mirror oblique angle processing is carried out at the output end, space coupling loss is eliminated, and all-optical-fiber monolithic integration is achieved.

The invention discloses an optical fiber twinning controllable vernier hydrogen sensor and a detection method, and belongs to the technical field of optical fiber sensing, the optical fiber twinning controllable vernier hydrogen sensor comprises a single-mode optical fiber, a femtosecond laser direct writing grating, a Fabry-Perot interferometer and a Pd / WO3 hydrogen sensitive film; the single-mode optical fiber comprises an optical fiber core and an optical fiber cladding, the femtosecond laser direct writing grating is prepared in the optical fiber core, the Fabry-Perot interferometer is composed of a reflecting surface 1 and a reflecting surface 2 which are relatively parallel to each other, the Pd / WO3 hydrogen sensitive film is coated on the inner side of the reflecting surface 2, and the femtosecond laser direct writing grating and the Fabry-Perot interferometer are arranged in series; the optical path of the Fabry-Perot interferometer is modulated through the interaction of the Pd / WO3 hydrogen sensitive film and hydrogen, interference spectrum wavelength drift is triggered, temperature compensation is achieved in combination with the temperature response of the femtosecond laser direct writing grating, and hydrogen concentration sensing is completed. The method is suitable for hydrogen leakage detection in industrial environments, energy equipment and other scenes.

The invention discloses a fiber grating preparation system and method based on piezoelectric displacement and femtosecond laser direct writing. The system comprises a piezoelectric displacement platform, a single-axis high-precision displacement platform, a femtosecond laser device, a piezoelectric controller, a laser controller, a signal generator and an upper computer. According to the system, grid line inscribing bending can be avoided, the efficiency of inscribing the fiber bragg grating line by line by femtosecond laser is improved, and the positioning precision of the grating period is improved. The invention discloses a method for inscribing the fiber grating line by line based on piezoelectric displacement and femtosecond laser, and is based on the system.

The invention discloses a multi-focus translation staggered close connection type parallel laser direct writing rapid processing method which comprises the steps that a multi-focus module and a laser direct writing scanning device are built, the multi-focus module generates multi-beam arrays which are arranged in parallel, and after the multi-beam arrays are focused by the laser direct writing scanning device, multi-focus laser arrays which are arranged in parallel at equal intervals are formed at a focal plane; a multi-focus translation staggered scanning strategy is designed, and in the scanning strategy, direct-writing machining areas of all focuses are interspersed and staggered, so that a close-connection direct-writing machining area is formed; the multi-focus laser arrays arranged in parallel at equal intervals perform scanning through a scanning strategy, in the scanning process, each focus is controlled through an independent laser switch of the focus, the multi-focus laser arrays interact with a photoetching material, and rapid laser direct writing of any pattern to be processed is achieved in a close connection direct writing processing area. According to the invention, one-mirror-to-bottom type seamless laser direct-writing scanning can be realized, and the multi-focus laser direct-writing processing efficiency and quality can be effectively improved.

The invention discloses a femtosecond laser processing-based silicon optical chip-optical fiber coupled spot-size conversion chip and a preparation method thereof, the femtosecond laser processing-based silicon optical chip-optical fiber coupled spot-size conversion chip comprises a silicon optical chip, a spot-size converter and an optical fiber array, one end of the spot-size converter is aligned with the optical fiber array, and the other end of the spot-size converter is aligned with the silicon optical chip; preparing a waveguide in the waveguide layer in the quartz glass by using a femtosecond laser direct writing system; grinding the end surfaces of the cladding, the waveguide layer and the optical fiber by using abrasive paper with different mesh numbers in sequence, polishing by using a polishing agent, immersing in a beaker filled with absolute ethyl alcohol for cleaning, and drying after cleaning; and placing on a platform with a 45-degree inclination angle, and controlling the three-axis displacement platform to enable the femtosecond laser focus to scan in an end face coupling area of the optical fiber and the first waveguide array according to a designed path so as to obtain the thickness and the cross section width of the waveguide. According to the invention, the silicon optical chip and the optical fiber array can realize spot-matched optical signal transmission, the performance is reliable and stable, and the industrialization development of the silicon optical technology can be realized.

The invention provides a laser holographic anti-counterfeiting film makeup method for optimizing seam precision, which comprises the following steps: acquiring light wave phase distribution data of a seam area through a preset optical simulation model, and calculating light wave phase difference of adjacent holographic image edges by adopting a fast Fourier transform algorithm to obtain spatial distribution coordinates of phase discontinuous points; extracting optical characteristic parameters of a seam area from the optimized phase distribution data, and simulating a propagation path of light waves in the seam area by adopting a finite element analysis method to obtain boundary conditions of smooth transition of the light waves; and manufacturing parameters of a seam area are extracted from the final microstructure template data, a holographic pattern of the seam area is generated through light wave phase modulation and pixel dot matrix density control by adopting a laser direct writing technology, and the holographic anti-counterfeiting film makeup with optical fracture suppression is obtained. By accurately controlling phase distribution and bright spot design of the seam area, continuous transition of light waves and visual seamless connection are achieved.

The present invention provides a method for forming a micro-nano cavity structure, belonging to the field of micro-nano structure manufacturing. A cavity structure is formed on a surface to be formed by laser direct writing technology. A plurality of through holes are formed on the surface of the cavity structure, and the through holes communicate between the cavity and the external environment. A closed structure is formed on the outer surface of the cavity structure by laser direct writing technology, and the closed structure is attached to the outer surface of the cavity structure, and the closed structure simultaneously closes the plurality of through holes. By first forming a cavity structure with holes and then forming a closed structure on the surface of the cavity structure to cover the through holes, high-precision three-dimensional structure forming of the micro-nano cavity can be realized. This forming method enables the structural design of the cavity to have extremely high freedom and greatly reduces the difficulty of cavity forming.

The invention discloses a method for improving optical storage performance by superposing and rewriting a Type X structure based on femtosecond laser direct writing, and belongs to the technical field of optical storage, and the method comprises the steps: 1, determining a processing parameter window of the Type X structure; 2, determining a seed pulse parameter and a write-in pulse parameter; 3, random data writing and reading are carried out; according to the method, the storage points are superposed and rewritten by utilizing the erasable rewriting characteristic of the Type X, so that the limitation of optical diffraction limit can be bypassed, the storage capacity of the femtosecond laser permanent optical storage technology is improved by at least one order of magnitude, the number of pulses required by each storage point can be reduced, and the data writing speed is improved.

The invention particularly relates to a processing method of an optical waveguide chip, a chip, an assembly process and a device, and the processing method comprises the steps: S10, processing a waveguide region with an optical waveguide inside through a three-dimensional laser direct writing technology, and enabling the waveguide region to extend outwards with a first junction point at one end of the optical waveguide as a reference to form a passive coupling region; s20, setting a Mark point by taking the first connecting point as a positioning reference; and S30, based on the positioning of the Mark point, machining a passive coupling V groove on the surface of the passive coupling area. The three-dimensional laser direct writing technology and the high-precision machining technology are integrated through the effect of the Mark points, the optical waveguide chip capable of being in passive butt joint coupling with a common single-mode optical fiber is prepared, the coupling complexity of a multi-core optical fiber and the common single-mode optical fiber is reduced, and the application compatibility of the multi-core optical fiber is further improved.

The invention discloses a metal grid transparent conductive film which sequentially comprises a transparent base material layer, a metal grid layer, a transition layer and a protection layer from bottom to top. The manufacturing method comprises the steps of pretreating the transparent base material, preparing the metal seed layer, performing laser direct writing patterning, performing electroplating thickening to form the metal grid layer, preparing the transition layer and the protective layer, and performing performance test and adjustment. The hexagonal honeycomb grid structure and the arc edge design are adopted, and the problem of metal grid electric field concentration is effectively solved; through the arrangement of the transition layer, the interface bonding force of the metal grid is improved; the protection layer and the transition layer cooperate to improve the corrosion resistance of the film; the problems that an existing transparent conductive material is high in cost, poor in flexibility and insufficient in interface compatibility, and an electrochromic device is concentrated in electric field, short in service life and the like are effectively solved, and the transparent conductive material can be widely applied to building intelligent windows, automobile anti-dazzle rearview mirrors, flexible display panels and other electrochromic devices and has important industrial application value.

According to the spectacle lens design method and the spectacle lens provided by the invention, the surface type basic parameters of the spectacle lens are determined by acquiring the spectacle fitting basic parameters and the eyeball morphological characteristic parameters of a spectacle fitting person, and then the contrast ratio of rod cells is reduced by designing a radial inhibition function, so that the visual burden of the peripheral area of macular is relieved; the surface of the spectacle lens is precisely processed through a laser direct writing technology, a complex microstructure is realized, the precise implementation of a designed radial inhibition function is ensured, and the spectacle lens is further coated through a multi-layer coating technology, so that the transmission ratio of short-wavelength light is increased; the S-cone cells are activated, and the cone cell contrast ratio is reduced, so that the eye axis growth is better regulated and controlled, and the myopia progress is slowed down.

The utility model discloses wafer rotation type laser direct writing exposure equipment, which comprises a base provided with a first guide rail; the multiple workbenches are movably connected to the multiple first guide rails, each workbench comprises a bearing disc, and each workbench is configured to be capable of driving a to-be-scanned piece placed on the bearing disc to move in the first direction; the exposure assembly is configured to scan the piece to be scanned; the alignment assembly is configured to calibrate the position of the to-be-scanned piece on the bearing disc; each workbench comprises a rotating mechanism used for driving a to-be-scanned piece to rotate. The equipment adopts central alignment and rotary exposure to replace a traditional linear reciprocating alignment exposure mode, so that vibration is effectively avoided under the condition that an additional anti-vibration structure is not added, resonance caused by reciprocating motion of double workbenches is avoided under the condition of the double workbenches, and the alignment precision and the exposure precision are greatly improved.

The embodiment of the invention discloses an image processing method and device. The method comprises the following steps: determining respective first coordinates of a plurality of pixel points in each row in N rows of first image strips of an initial first image; when a control module of the laser direct writing equipment controls a laser to sequentially expose each pixel point of the N rows of first image strips, recording a plurality of second coordinates corresponding to the laser, and calculating a plurality of deviation values between the plurality of second coordinates and the plurality of corresponding first coordinates; and translating each pixel point of the N rows of first image strips according to the plurality of first coordinates and the plurality of corresponding deviation values to obtain a second image comprising N rows of second image strips, so that the position of each pixel point in the second image coincides with the position of the pixel point exposed by the laser. According to the invention, image exposure errors caused by untimely signal reception and / or laser installation errors of the laser can be corrected, and the accuracy of image exposure is improved.

The invention discloses a chromatography-imitating miniature integrated electronic nose and application thereof, and the electronic nose comprises a nut, a screw, a polytetrafluoroethylene joint, a stainless steel clamp, a polytetrafluoroethylene tube, an organic glass chamber formed by a laser direct writing technology, a laser-induced graphene (LIG) interdigital electrode sensor array and a rubber sealing ring. According to the invention, an interdigital electrode array which can be directly connected to a commercial FPC interface is engraved on a flexible polyimide film through a laser direct technology; the sensor array is composed of a single sensing material and PDMS coatings with different thicknesses, the sensor with high repeatability is manufactured by adopting a simple dispensing method, and the whole LIG transmission interdigital electrode sensor array is simple in manufacturing process and low in cost; the electronic nose is formed by simply assembling all parts, so that the electronic nose is convenient to disassemble, replace and produce in batches; the electronic nose is small in size, simple in wiring and capable of being used after being connected.

The invention discloses a preparation method of a perovskite photoresist nano composite material and a laser direct writing method. The preparation method comprises the following steps: forming a two-photon photoresist substrate; a CsPbBr precursor solution is formed; and fusing the CsPbBr precursor solution and the two-photon photoresist substrate to form the two-photon photoresist nano composite material doped with the CsPbBr precursor. The perovskite photoresist nano composite material formed by the method can reach hundred-nanometer-level processing precision, and the minimum line width can reach 100 nm. Meanwhile, the preparation method disclosed by the invention is simple and low in cost, and a display device prepared from the perovskite photoresist nano composite material disclosed by the invention has excellent performance and can be applied to the fields of information storage, holographic display and the like.