23 results about "Nanophotonics" patented technology

This invention discloses an integrated enzyme-free SERS microneedle sensor for real-time glucose monitoring and its fabrication method, belonging to the fields of biosensing and nanophotonics technology. The sensor comprises an optically transparent polymer microneedle array, a polydopamine intermediate layer and a gold nanostructure layer sequentially modified on its surface, and glucose-specific recognition molecules immobilized on the surface of the gold nanostructure layer. This invention employs a single-layer integrated structure, integrating transdermal puncture, laser conduction, SERS enhancement, and glucose recognition functions, eliminating the need for multi-layer stacking and enabling accurate quantitative detection of glucose under enzyme-free conditions. The sensor fabrication process is simple and controllable, requiring no complex equipment, allowing for mass production at a low cost, and has broad application prospects in the field of minimally invasive blood glucose monitoring devices, meeting the needs for real-time, accurate, and minimally invasive blood glucose monitoring.

The invention discloses a method for regulating and enhancing ultraviolet fluorescence of rare earth up-conversion nanocrystals through a local structure and a method for measuring the local structure, and belongs to the field of rare earth luminescent nanomaterials. According to the method, in the process of synthesizing the LiREF4: coated LiREF4 core-shell structure, the stoichiometric ratio of LiOH and NH4F in a core layer and / or the use amount of lithium trifluoroacetate in a shell layer are precisely regulated and controlled, and the localized crystal field environment around activated ions is changed, so that the selective regulation and control on the luminescence transition path of the activated ions are realized, and the emission intensity of multiphoton ultraviolet up-conversion luminescence is improved. According to the method, the high-order multi-photon up-conversion process of rare earth ions can be remarkably enhanced, meanwhile, low-order emission is inhibited, the luminescence selectivity of an up-conversion nano material is improved, emission light with the corresponding wavelength can be synthesized from the same matrix material according to the requirements of synthesizers, and the method can be suitable for various rare earth active ions and matrix materials and has a wide application prospect. The method has application potential in the fields of nano photonics and biomedicine.

A kind of full-automatic intelligent, multi-functional high-order nonlinear fluorescence kinetics test method and device, it relates to nonlinear optics and nanophotonics field.The optical testing device consisting of excitation light generation module, automatic power regulation module, excitation light modulation module, sample scanning module, data acquisition and analysis module and intelligent control module is built, under the excitation of incident laser, based on the overall coordination of intelligent control module, drive the rest each module to complete the dynamic response test of nonlinear fluorescence sample, realize full-automatic intelligent, multi-functional, high-precision, simple, efficient, low cost, universal fluorescence kinetics test analysis.The problem of traditional manual time-consuming and low test accuracy is solved.In addition, the multi-functional integration of fluorescence response curve, fluorescence rise time, fluorescence lifetime and fluorescence imaging effectively improves the test efficiency and application scenario, greatly reduces the system cost.

The invention discloses a construction method of a metasurface test system, and relates to the technical field of nano photonics and photoelectric devices. A device used in the method comprises a light source, an electric filtering wheel, a sample table, a sensor, an electric guide rail a and an electric guide rail b, the electric guide rail b is slidably mounted on the electric guide rail a, the sample table is fixedly connected with the electric guide rail a, the sensor is fixedly connected with the electric guide rail b, and the electric filtering wheel is arranged between the light source and the sample table. During construction, a debugging light source is selected firstly, then the wavelength of the electric filtering wheel is set, the initial positions of a sample table and a sensor are adjusted, then data of a three-dimensional transmission light field and a point spread function are collected, the focal length is measured, and finally data needed by transmittance and focusing efficiency calculation are collected. According to the method, multiple parameters of the metasurface can be automatically tested, frequent light path adjustment is not needed, one-key data generation is achieved, the test efficiency and accuracy are improved, the method adapts to multiple wavebands and multiple types of light sources, and research, development and industrialization of the metasurface technology are facilitated.

Disclosed are embodiments photonic integrated circuits with photo-switchable components. Embodiments are illustrated in the form evanescent field perturbation sensors in which receptor molecules are patterned onto the sensor substrate with precision. In particular, light patterning and molecular-based photo-responsive motifs allow for the positioning of receptor molecules on the operational elements of the evanescent field perturbation sensors. Receptor molecules are further detachable from the sensor and capable of replacement with additional receptor molecules of the same type, or one or more alternative receptor molecules capable of receiving the same or different analyte receptor molecules. In certain embodiments the light sources for patterning and receptor molecule interchange may integrated within the sensor and / or sensor platform itself. In certain embodiments a method of recharging and / or reconfiguring the receptor molecules, and a machine for carrying out the method is disclosed.

This invention relates to the field of electromagnetic simulation technology, and in particular to a PINN method integrated with dielectric electromagnetic boundary conditions, used to solve electromagnetic field simulation problems involving multiple dielectrics, high contrast, and fine geometries in nanophotonics and optoelectronic device design. By explicitly embedding the frequency-domain Maxwell's equations, external boundary conditions, and dielectric interface continuity conditions into the PINN loss function system, a multi-objective optimization framework is constructed, including partial differential equation residuals, boundary condition residuals, and interface physical constraint residuals. Combined with a multi-subdomain network design strategy and dynamic sampling methods, accurate modeling of complex dielectric interfaces and high-contrast electromagnetic fields is achieved. Compared with traditional numerical methods, this invention significantly improves simulation efficiency and accuracy, and supports multi-scale coupled solutions using PINN and traditional mesh methods, making it suitable for fields such as micro / nano optical device design and electromagnetic scattering analysis.

This invention discloses an optoelectronic device based on a two-dimensional material heterojunction and its fabrication method. The optoelectronic device includes: a substrate; an optical resonant cavity located on the substrate, the optical resonant cavity including a first reflector and a second reflector disposed opposite to each other; and a tunneling junction disposed between the first reflector and the second reflector in the optical resonant cavity. The tunneling junction includes a first two-dimensional material layer, a first insulating layer, and a second two-dimensional material layer sequentially stacked between the first reflector and the second reflector. The first two-dimensional material layer and the second two-dimensional material layer are transition metal sulfide layers of different materials. This invention combines an optical resonant cavity with a two-dimensional material heterojunction, significantly improving energy transfer efficiency through a polariton relaxation mechanism, and has broad application potential in fields such as nanophotonics, quantum computing, and high-performance displays.

The application discloses a kind of polarization modulation nanophotonics device design or optimization method, according to polarization conversion needs, utilize deep neural network and bayesian optimization algorithm such as recommendation generation nanophotonics device (such as wave plate) structure parameter, complete the design of required polarization modulation device.This method utilizes the efficient parallel computing capacity of deep neural network and bayesian optimization, under the limited computing resources, recommend to generate a large number of wave plates with efficient polarization conversion capability, and construct structure database, can further support the development of various polarization-dependent optical devices.Compared with the traditional design strategy based on preset physical rules or prior design experience, the present application has higher design optimization efficiency and design freedom, reduces the consumption of computing resources, and provides a new paradigm for the design and optimization of nanophotonics devices.

The present application relates to the technical field of nanophotonics and computational optical imaging, and particularly relates to a computational spectral metasurface reverse design method based on an iterative optimization algorithm, comprising: S1, physical structure parameterization, defining the geometric parameters, arrangement period and material refractive index of the nanostructure in the unit, initializing the physical structure parameters and the corresponding electromagnetic response operator; S2, constructing a differentiable simulation model, using a rigorous coupled wave analysis algorithm based on an automatic differentiation framework to calculate the complex amplitude transmission spectrum data under the current parameters, and keeping the electromagnetic response gradient flow continuous in the calculation graph. In the present application, through end-to-end soft and hard collaborative optimization of the metasurface physical structure parameters and the neural network reconstruction algorithm weight, the deep coupling and collaborative evolution of the hardware coding characteristics and the software decoding logic are realized, the performance mismatch problem caused by the traditional step-by-step design is fundamentally solved, and the restoration accuracy and recognition sensitivity of the system to complex spectral characteristics are significantly improved.

Disclosed are embodiments photonic integrated circuits with photo-switchable components. Embodiments are illustrated in the form evanescent field perturbation sensors in which receptor molecules are patterned onto the sensor substrate with precision. In particular, light patterning and molecular-based photo-responsive motifs allow for the positioning of receptor molecules on the operational elements of the evanescent field perturbation sensors. Receptor molecules are further detachable from the sensor and capable of replacement with additional receptor molecules of the same type, or one or more alternative receptor molecules capable of receiving the same or different analyte receptor molecules. In certain embodiments the light sources for patterning and receptor molecule interchange may integrated within the sensor and / or sensor platform itself. In certain embodiments a method of recharging and / or reconfiguring the receptor molecules, and a machine for carrying out the method is disclosed.

The application discloses a cross-scale asymmetric directional spectrum selective heat radiator design method, and relates to the technical field of heat transfer and exchange.The application comprises the following steps: step one, determining target radiator performance indexes according to application requirements; step two, selecting a spectrum controllable part meeting the principle of nanophotonics; step three, designing an asymmetric angle controllable part meeting the principle of ray optics; and step four, performing cross-scale optical coupling modeling, simulation verification and optimization.The heat radiator designed by the application can realize efficient, polarization-independent, spectrum and angle selective regulation of the asymmetric directional heat radiator, and significantly improves the performance indexes of the heat radiator.

The application relates to the technical field of nanophotonics, in particular to an OLED display device and a manufacturing method thereof, which comprises an OLED substrate, a total reflection mirror layer located above the OLED substrate, wherein the total reflection mirror layer comprises a super surface structure, and the super surface structure is a cylindrical array nano structure; a flat layer located above the total reflection mirror layer; an anode located above the flat layer; a light-emitting layer located above the anode; a cathode located above the light-emitting layer; and a cover layer located above the cathode. The OLED display device improves the light-emitting efficiency, improves the color purity of displayed three-color light, enhances the resolution, and improves the user experience.

The invention relates to the field of optical precision measurement and nano photonics, and discloses a single nanoparticle plasmon phase imaging system and a coupling effect measurement method. The system comprises a coherent light source module, a polarization state modulation module, a microscope objective module, a wavefront sensing module, an image acquisition module and a central processing module, two cross-polarization interferograms are obtained through polarization modulation, phases are reconstructed, differential phase diagrams are generated, common-mode noise is suppressed, and dipole phase signals of nanoparticles are highlighted. According to the method, wavelength scanning and nanoscale spacing regulation are further combined, and quantitative measurement of the plasmon coupling effect is achieved. According to the invention, the signal-to-noise ratio and the positioning precision are improved, and optical property characterization and near-field coupling mechanism research under a single particle scale are supported.

Systems, methods, apparatuses, and computer program products for displaying an image. A method may include generating an image from a tuned light pattern directly through a nanophotonics phased-array chip. The method may also include applying a proximity effect on the image. The method may further include adjusting an image quality of the image by performing proximity effect correction on the image with the proximity effect. In addition, the method may include controlling a phase of an optical signal emanating from the nanophotonics phased-array chip. Further, the method may include projecting the adjusted image based on the controlled phase of the optical signal.

The present disclosure provides a three-dimensionally arranged nanoparticle film and a preparation method and use thereof, and belongs to the technical field of nanophotonics. The preparation method includes the following steps: coating nanoparticles with hydrophobic molecules, and dispersing in an organic solvent to obtain a modified nanoparticle dispersion; conducting a surface treatment on a three-dimensional template to obtain a hydrophilic three-dimensional template; and adding water to a surface of the hydrophilic three-dimensional template to form a water film, adding the modified nanoparticle dispersion dropwise on a surface of the water film to conduct self-assembly, and removing the water film to obtain a three-dimensionally arranged nanoparticle film with an array structure. In the present disclosure, the nanoparticle film prepared by a self-assembly and template-assisted method can generate vertical and parallel multiple-surface lattice resonances, thereby effectively suppressing radiation loss and enhancing an interaction between light and matters at a nanometer scale.

The invention discloses a method for realizing a dual-polarization broadband Laplacian differentiator based on a non-local metasurface, and belongs to the application fields of nano photonics, optical calculation and optical field information regulation and control. The non-local metasurface works in a transmission mode and is composed of a square ring unit array made of a single-layer amorphous silicon material. By designing and selecting geometric parameters of the square ring, the non-local metasurface respectively excites bound state modes with different angle dispersion capabilities in a quasi-continuous domain under irradiation of p polarized light and s polarized light, and an optical transfer function required by optical Laplacian differential operation can be realized in a real airspace. And generating a processing file of the corresponding non-local metasurface according to the determined geometric dimension of the square ring unit. And processing the transmission-type non-local metasurface by adopting a micro-nano processing technology of electron beam etching. In a working wave band, when a target image directly enters the non-local metasurface under irradiation of p polarized light and s polarized light, two-dimensional second-order edge contour information of the target image can be directly obtained under the dual-polarization channel.

Disclosed are embodiments photonic integrated circuits with photo-switchable components. Embodiments are illustrated in the form evanescent field perturbation sensors in which receptor molecules are patterned onto the sensor substrate with precision. In particular, light patterning and molecular-based photo-responsive motifs allow for the positioning of receptor molecules on the operational elements of the evanescent field perturbation sensors. Receptor molecules are further detachable from the sensor and capable of replacement with additional receptor molecules of the same type, or one or more alternative receptor molecules capable of receiving the same or different analyte receptor molecules. In certain embodiments the light sources for patterning and receptor molecule interchange may integrated within the sensor and / or sensor platform itself. In certain embodiments a method of recharging and / or reconfiguring the receptor molecules, and a machine for carrying out the method is disclosed.

The invention relates to a preparation method of a monocrystalline silicon nano film for a nano photon technology, and belongs to the field of silicon-based nano material preparation. The method comprises the following steps: carrying out ultrasonic cleaning on an oriented monocrystalline silicon substrate; a porous silicon sacrificial layer with porosity distributed in a gradient manner is prepared on the back surface through pulse electrochemical etching; after hydrogen plasma passivation treatment, a monocrystalline silicon nano film is deposited on the surface at a low temperature; then, selectively etching the porous silicon sacrificial layer by using a surfactant compound solution, stripping to form a complete monocrystalline silicon nano film, and transferring the complete monocrystalline silicon nano film to a target substrate through surface tension or a heating fitting mode; and finally, the stability of the film surface can be improved through silane passivation, and the residual substrate can be recycled for multiple times after being cleaned.

The invention discloses an ultrahigh-order nonlinear photon avalanche fluorescent nano material based on low-dose alkali metal ion doping, and belongs to the field of nonlinear nano photonics. According to the material, rare earth fluoride nanoparticles are taken as a main body, and alkali metal ions are introduced for gap doping in a synthesis process, so that a crystal field environment, local symmetry and rare earth ion space distribution are effectively regulated and controlled, and the photon avalanche fluorescent nano material which is stable in structure, uniform in morphology and particle size and good in dispersity is obtained. Specifically, the method comprises the steps of preparation of a precursor solution, introduction of a low-dose alkali metal source, control of reaction temperature and time and aftertreatment of a product, and predictable regulation and control of the symmetry of a crystal field are achieved. The used raw materials are easy to obtain, the process conditions are loose and high in controllability, and the method has good large-scale preparation potential. The obtained nano material has wide application prospects in the aspects of super-resolution imaging, ultra-sensitive sensing and nonlinear optical device integration.

The invention belongs to the technical field of nano photonics and spectral analysis, and particularly relates to an optimization design method of an enhanced SERS (Surface Enhanced Raman Scattering) substrate and application of the SERS substrate in trace substance detection. The local surface plasmon resonance (LSPR) characteristic of a regular polygon silver nanostructure (3-octagon) is systematically researched through a time domain finite difference (FDTD) method, it is found that the square structure has the optimal electric field enhancement performance (the electric field intensity reaches 7.84 V / m) under the excitation wavelength of 532 nm, and the enhancement mechanism of the square structure is attributed to quadruple symmetric local field distribution and curvature sudden change induced second harmonic resonance. According to the method, the oriented design of the SERS substrate electromagnetic field enhancement effect is realized by taking'edge number selective optimization 'as a core and regulating and controlling the edge number and curvature distribution of the nanostructure for the first time. The method can be widely applied to trace molecule detection in the fields of biomedicine, environmental monitoring and food safety, and has the advantages of high sensitivity, high stability and customizability.

The application relates to the fields of optical precision measurement and nanophotonics, and discloses a single-nanoparticle plasmonic phase imaging system and a coupling effect measurement method. The system comprises a coherent light source module, a polarization state modulation module, a microscope objective module, a wavefront sensing module, an image acquisition module and a central processing module; two orthogonal polarization interferograms are obtained through polarization modulation, the phase is reconstructed and a differential phase image is generated, common-mode noise is suppressed, and the dipole phase signal of the nanoparticle is highlighted. The method further combines wavelength scanning and nanoscale spacing regulation to realize quantitative measurement of plasmonic coupling effect. The application improves the signal-to-noise ratio and positioning accuracy, and supports optical property characterization and near-field coupling mechanism research under single-particle scale.

The invention discloses photosensitive slurry for curing and forming quartz glass as well as a preparation method and application of the photosensitive slurry. The slurry is mainly composed of an acrylate functionalized POSS monomer, a three-functional-group acrylic monomer, fumed silica nanoparticles, a photoinitiator and other auxiliary agents. The photosensitive slurry can be cured through ultraviolet light or near-infrared femtosecond laser, and then is converted into pure quartz glass through the processes of low-temperature degreasing, sintering densification and the like, so that the slurry can be used for additive manufacturing of quartz glass elements with micron and submicron precision. The POSS monomer in the slurry is also converted into silicon dioxide after being sintered, and the mass fraction of the effective solid content of the slurry can exceed 60%, so that the problem of high structural shrinkage caused by insufficient solid content of the existing slurry is solved, meanwhile, the micro-nano processing advantage of two-photon polymerization is reserved, and the slurry is suitable for the fields of nano photonics, micro-optical devices and the like.

The embodiment of the application provides a kind of double hidden color pattern processing method and system, belong to nanophotonics field.The method comprises: the color pattern to be processed is collated with the color library configured in advance, according to the corresponding relationship between processing parameter and color in the color library configured in advance, the processing parameter corresponding to each color in the color pattern to be processed is obtained, and the color pattern to be processed includes color picture and hidden picture;Based on processing parameter, using processing equipment, color picture and hidden picture are processed on substrate using different nanostructure shape and are handled, to obtain double hidden color pattern interwoven by color picture and hidden picture.By using the laser processing equipment of the nonlinear polymerization principle, the feasibility of color control is increased, the preparation difficulty of structural color material is reduced, and the use of chemical pigments is not required in the present application, avoiding the use of harmful chemicals and reducing the negative impact on the environment, improving production efficiency.