33 results about "Absorption cross section" patented technology

According to the spectrum-to-mass concentration imaging method and device based on physical mechanism deep learning provided by the invention, the actually measured spectrum and the reference spectrum of the pollution gas smoke plume are collected, the spectrum data set is constructed after differential processing, the meteorological data and the online mass concentration label are synchronously collected, and meanwhile, the spectrum-to-mass concentration imaging method and device based on physical mechanism deep learning are provided. A high-resolution gas absorption section is obtained and is convolved into a matrix; and constructing a deep learning model fusing a feature extraction module, an expanded least square module and a full connection module, taking the spectral data set, the meteorological data and the absorption cross section matrix as input, performing training in combination with labels to obtain an optimization model, and predicting the mass concentration of the target gas. According to the method, the problems of error accumulation, low calculation efficiency and poor interpretability caused by dependence on a complex physical model in a traditional method are solved, and high-precision, high-efficiency and interpretable real-time imaging of the mass concentration of the smoke plume of the pollution gas is realized.

The invention discloses a satellite remote sensing atmospheric pollution gas concentration inversion method and system based on DOAS, and belongs to the technical field of atmospheric environment remote sensing monitoring. The method comprises the following steps: acquiring solar back scattering spectrum data observed by a satellite load and preprocessing the solar back scattering spectrum data; performing spectrum correction by using a high-precision instrument response function; in a selected fitting window, constructing a fitting model comprising a target gas differential absorption cross section, a Ring effect, Mie scattering and multiple scattering contributions; carrying out spectrum fitting by adopting a nonlinear least square algorithm, and carrying out inversion to obtain a differential batter column concentration (DSCD) of the target gas; in conjunction with an Atmospheric Mass Factor (AMF), the DSCD is converted to a Vertical Column Concentration (VCD). The system comprises a data acquisition and preprocessing module, a spectrum fine correction module, a DOAS spectrum fitting module, a dynamic AMF calculation module and a column concentration inversion and output module, and optionally comprises a data assimilation and traceability analysis module. According to the satellite remote sensing atmospheric pollution gas concentration inversion method and system based on the DOAS, the parameterized multiple scattering correction items are introduced, a dynamic AMF calculation scheme is developed, and the inversion precision and reliability under the complex atmospheric condition are remarkably improved.

The invention relates to a high-performance copper (I)-based glass scintillator material and a preparation method thereof, and particularly discloses a Cu (I)-based hybrid metal halide optimized based on halogen engineering (Cl, Br, I), and the X-ray absorption cross section and the light output performance are remarkably improved. The light yield of the material reaches 79, 770 photons MeV <-1 > and is improved by 180% compared with that before optimization. The transparent glass scintillation screen (optical transmittance gt; the material has excellent X-ray imaging resolution (20.5 lp mm <-1 >), and also shows good thermal stability (stable luminescence performance at a high temperature of 150 DEG C) and anti-radiation durability. The material has the advantages of high light yield, low detection limit, high spatial resolution and the like, provides a breakthrough solution for application of the zero-dimensional halogenated cuprous-based scintillator in the fields of X-ray detection and imaging, and is particularly suitable for the fields of medical diagnosis, industrial nondestructive testing, high-energy physical detection and the like.

The application provides a PGNAA detection data comprehensive analysis method, which relates to the technical field of detection and comprises the following steps: acquiring the first element content, neutron absorption cross section and environmental temperature variation amount and humidity of a sample to be detected; adjusting the ray self-absorption correction coefficient of the first element content, adjusting the flux distribution based on the neutron absorption cross section, calibrating the peak position based on the environmental temperature variation amount, and correcting the background based on the environmental humidity; and through case-by-case processing, when the relevant parameters exceed the threshold value, the synergistic calculation and simulation are adopted, otherwise the standard value is used, so that the accurate comprehensive analysis of the PGNAA detection data is realized, and the accuracy and adaptability of the detection result are improved.

This invention discloses a data processing method for carbon dioxide column concentration based on a spaceborne lidar, comprising: performing nonlinear correction on the spaceborne integral path differential absorption (IPDA) lidar detection signal; calculating the differential optical thickness based on the IPDA lidar signal; calculating the echo height above sea level and geographic coordinates based on the echo signal location; establishing an absorption cross-section lookup table using differential absorption cross-section data from the High Resolution Transmission Molecular Absorption (HITRAN) database; calculating the pressure at the echo location using the European Centre for Medium-Range Weather Forecasts Reanalysis Dataset (ERA5) and the echo signal height above sea level; calculating the Doppler frequency shift; calculating a weighting function based on pressure profiles, humidity profiles, temperature profiles, and Doppler frequency shift data; and calculating the carbon dioxide column concentration. The key features of this invention are the nonlinear correction of the spaceborne IPDA lidar echo signal, the establishment of a differential absorption cross-section lookup table for carbon dioxide molecules, and the accurate and efficient calculation of the carbon dioxide column concentration using spaceborne IPDA lidar detection data and ERA5 meteorological dataset data.

Various embodiments herein relate to techniques for depositing photoresist material on a substrate. For example, the tin techniques may involve providing the substrate in a reaction chamber; providing a first and second reactant to the reaction chamber, where the first reactant is an organo-metallic precursor having a formula of M1aR1bL1c, where: M1 is a metal having a high patterning radiation-absorption cross-section, R1 is an organic group that survives the reaction between the first reactant and the second reactant and is cleavable from M1 under exposure to patterning radiation, L1 is a ligand, ion, or other moiety that reacts with the second reactant, a≥1, b≥1, and c≥1, and where at least one of the following conditions is satisfied: the photoresist material comprises two or more high-patterning radiation absorbing elements, and / or the photoresist material comprises a composition gradient along a thickness of the photoresist material.

The present application relates to the field of optical measurement technology, disclose a kind of based on open optical path atmospheric NO3 radical measurement system and method, system includes light source module, first convex lens, first high reflectivity lens, second high reflectivity lens, detachable cavity, second convex lens and spectrometer, the present application is directly sampled to the air between high reflect lens by the design of open optical path, avoid the wall loss of NO3 radical in active sampling, to improve the sensitivity and accuracy of measurement. While introducing the design of detachable cavity, realize the flexible switching of zero air and actual atmospheric sampling. The introduction of zero-point spectral library method effectively compensates the influence of temperature and humidity change on light source and spectrometer, the spectral shift caused by environmental change is eliminated by dynamic calibration, in addition, the input of real-time water vapor absorption cross section can accurately remove the influence of water vapor absorption on NO3 radical measurement, further improve the reliability of measurement result.

The application discloses a method for determining the position of drilling fluid leakage and calculating leakage parameters, which is used for finding the position of well leakage during drilling, calculating the leakage speed and leakage amount of drilling fluid, and estimating the leakage scale. The application describes the principle that the photoelectric absorption cross section Pe value of barite contained in the drilling fluid is abnormally high compared with other rocks, minerals and fluids, and the leakage position is accurately positioned by the characteristics of the high value of the Pe curve measured by the lithology density logging in the leakage well section, and the leakage speed is predicted by the correlation between the Pe logging value and the instantaneous leakage speed, and the leakage amount is calculated by combining the method of multi-mineral analysis with the actual content of barite in the drilling fluid. The method is simple and easy to operate, and the accuracy is reliable. Compared with the data provided by the field, the error of the leakage speed and the leakage amount calculated by the method is small, and the effect is good.

The application discloses a shale gas reservoir biological silicon content logging calculation method based on unit volume effective photoelectric absorption cross section index, and solves the problems of complex cost, inability to meet field large-scale, regional, low-cost evaluation and large calculation error of existing biological silicon content logging calculation methods. The method calculates unit volume effective photoelectric absorption cross section index from logging photoelectric absorption cross section index Pe and logging lithology density DEN data, and then calculates shale gas reservoir biological silicon content. The method can be used in coring wells, and has universal application value for all shale gas wells, and has smaller error and lower cost.

The invention discloses a tunable mid-infrared fiber laser with high power flatness. A pumping source enters an erbium-doped fiber through a pumping / signal coupler, and a low-reflectivity cavity mirror, the erbium-doped fiber, a laser collimator and a tuned filter form a laser resonant cavity; the low-reflectivity cavity mirror and the pumping / signal coupler are coupled to output intermediate infrared laser, the tuning filter device is used for realizing a wavelength tuning function, and the insertion loss difference value of the device under different working wavelengths is less than 0.5 dB; the wavelength of the pumping source is in a 1.6-1.7 micron wave band, erbium ions are pumped from a ground state energy level to a laser upper energy level, and laser lower energy level particles are consumed; the stable insertion loss in the process of adjusting the working wavelength by using a tuning filter device is combined with the characteristics that the emission cross section and the absorption cross section of erbium ions are gradually reduced along with the increase of the wavelength and the reduction rate of the absorption cross section is greater than that of the emission cross section, so that the gain difference caused by the emission cross section difference under different laser wavelengths of the fiber laser is reduced; and the power flatness of the fiber laser under different tuning wavelengths is improved.

The application discloses a method for determining biological silicon content in shale gas reservoirs based on lithology density logging data, and solves the problems of complex cost, inability to meet field scale, regional, low-cost evaluation and large calculation error of existing biological silicon content logging calculation methods. The method comprises the following steps: obtaining logging lithology density DEN, logging photoelectric absorption cross-section index Pe and logging natural gamma GR, establishing a ternary calculation equation based on the lithology density logging data, and then calculating the biological silicon content Si_toc in the shale gas reservoirs of the well to be interpreted. The method can be applied in coring wells, and has universal application value for all shale gas wells, and has smaller error and lower cost.

The application relates to an anti-radiation high-entropy MAX phase ceramic and a preparation method thereof, and belongs to the technical field of nuclear reactor materials. a Zr b V c Nb d Ta e )2AlC; wherein a+b+c+d+e=1. The high-entropy MAX phase ceramic provided by the application has radiation resistance and high-temperature resistance, has a small neutron absorption cross section, can inhibit the growth of radiation defects and helium bubbles, and improves the safety of nuclear materials.

The present application relates to the technical field of microwave measurement and reverberation chamber, and particularly relates to a theoretical model of a reverberation chamber test of an equivalent absorption cross section of a wave-absorbing material based on a mirror principle and application, comprising: establishing a mirror model, and obtaining the number of mirror objects after multiple reflections and the total surface area of the mirror model; obtaining a time constant in an unloaded state; obtaining a time constant in a loaded state; and constructing a theoretical model of a reverberation chamber test of an equivalent absorption cross section of a wave-absorbing material. The present application applies the mirror principle to the field of microwave measurement based on a reverberation chamber, and realizes a fast and accurate reverberation chamber test of an equivalent absorption cross section.

To provide a material with large two-photon absorption cross-sectional area.SOLUTION: A two-photon absorption material is provided, containing a molecule having a thiolate ligand and a metal thiolate complex bound to a surface of a small atomic cluster nucleus. An element constituting the small atomic cluster nucleus and a metal element constituting the metal thiolate complex are Au, and the small atomic cluster nucleus of the molecule of the metal thiolate complex has an atomic number in a range of 10-56.SELECTED DRAWING: None

A kind of light-weight high-temperature-resistant high-performance n / γ composite shielding material for space nuclear reactor, the composition of composite shielding material is: Gd-MOF mass fraction is 5wt%-40wt%, Pb-MOF mass fraction is 10wt%-40wt%, PI is matrix, high H content of PI is used to slow down fast neutron into thermal neutron, and the synergistic effect of high thermal neutron absorption cross section of Gd and high efficient γ shielding of Pb, combined with the chemical coordination characteristics of outer electron of Gd and Pb, metal-organic framework MOF porous structure is prepared, in-situ chemical synthesis is used to realize the interpenetration and winding of PI molecular chain in Gd-MOF and Pb-MOF porous structure, to improve the mechanical properties of composite material, and high efficient n / γ composite shielding function is obtained, the shielding material composition is good in uniformity, with high efficient n / γ composite shielding function and good comprehensive mechanical properties, resistant to high and low temperature and anti-radiation aging, can be used for long time in-260℃~+350℃ environment, can be applied to the demand of light-weight high-temperature-resistant high-performance n / γ composite shielding material for space nuclear reactor and micro-advanced nuclear energy system.

Disclosed in the present invention is a low-concentration gas measurement method based on direct absorption spectroscopy. In the method, real-time measured spectral data of a gas under test and a database of absorption cross sections of said gas measured in a laboratory are used, the concentration of SO2 is calculated by means of ultraviolet differential absorption spectroscopy, an interference spectrum of SO2 on NO2 is calculated, the influence of SO2 on the absorbance of NO2 is eliminated, the absorbance at a zero absorption position is calculated, the influence of spectral attenuation on measurement is eliminated, and the concentration of NO2 after elimination of cross interference is accurately calculated, thereby greatly improving the measurement accuracy and lowering the measurement limit.

The application discloses a broadband cavity enhanced absorption spectrum system detection optimization method, medium and equipment, the method first calibrates the broadband cavity enhanced absorption spectrum detection system, obtains the effective optical path curve and the absorption cross section of the to-be-detected gas of the system, and then constructs a plurality of spectral fitting band parameters according to the intensity of the absorption peak in the effective optical path curve and the absorption cross section of the to-be-detected gas. Actual observation is carried out, and an atmospheric actual measurement spectrum diagram is obtained. The actual measurement spectrum diagram is first subjected to spectral fitting by using low-range spectral fitting parameters, and the fitting result is judged. If the fitting result is within the measurement range of the spectral fitting parameters, the result is output. If the range of the fitting result exceeds the measurement range, higher-range spectral fitting parameters are replaced, spectral fitting is carried out again, and until the spectral fitting result meets the measurement range, the result is output.

The invention discloses an atomic scale simulation method for an ultraviolet effect, relates to the technical field of an ultraviolet radiation simulation method, and aims to solve the problem that a fracture result of a molecular chain on the surface of a polymer is influenced as a spectrum of a part of wavebands cannot be effectively simulated during ground ultraviolet radiation simulation at present. The method is technically characterized by comprising the following steps: step 1, constructing a chemical bond model of a polymer and the number of bonds, determining irradiation time and time step length, and performing ultraviolet irradiation of different wavelengths on the chemical bond model; 2, the absorption probability of the continuous energy spectrum is calculated according to the absorption cross section, whether photons are absorbed or not is judged, and the wavelength of the photons is selected randomly; 3, photon energy Euv and quantum yield are calculated based on the selected photon wavelength, and the chemical bond state is judged; 4, calculating the lifetime of an excited state, and updating the states of all keys; and step 5, repeating the steps 2-4 until the number of iterations or the irradiation time is reached.

This invention relates to the field of automated laser chip heating processing control technology, and in particular to a laser heating rework system. The system includes a spectral mapping module that obtains wavelength drift data by analyzing transient photoluminescence spectra collected by a fluorescence thermometer, and uses this data to identify the coordinates of poorly heated locations to generate a transient thermal state matrix. A tensor calculation module combines the microscopic orientation data of the material's crystal lattice structure to calculate the thermal conductivity coefficient and generate a thermal conductivity tensor matrix. A polarization synthesis module retrieves photon absorption cross-section difference parameters to inversely deduce a physical compensation array and generate a spatial polarization phase map. A polarization modulation device generates a non-uniform vector polarized light field based on this map, driving a laser output device to inject the light field into the coordinates of the poorly heated location to perform targeted heat injection. This invention utilizes the difference in physical absorption rate of photons with different polarization states in the underlying crystal lattice arrangement to correct local thermal distribution anomalies while achieving zero thermal damage overflow in the surrounding area, thus improving the overall processing yield.

The invention discloses a wavelength optimization selection method for a three-wavelength differential absorption laser radar, and the method comprises the steps: introducing an intermediate wavelength between an online wavelength and an offline wavelength, and deducing a three-wavelength differential absorption laser radar inversion equation set; then, a gas absorption model is constructed based on a Voigt linear function, the relation between the absorption cross section of molecules and the temperature and the pressure intensity is established, and an equation set is established according to the temperature, the pressure intensity, the concentration, the laser wavelength and the radar signal power; and finally, discretizing the candidate wavelength interval, analyzing candidate wavelengths one by one by adopting a numerical iteration method, determining an optimal third wavelength by taking the minimum temperature inversion deviation as a criterion, and considering error influences such as molecular extinction and wavelength drift, so that high-precision atmospheric temperature and concentration multi-parameter inversion can be realized in a complex atmospheric environment. The system has good monitoring accuracy, high efficiency and practicability, and has important application value and wide market prospect.

This application provides a method and system for measuring gas concentration based on an optical cavity, comprising: acquiring wavelength range information; acquiring optical path data, which is the distance between highly reflective mirrors in the optical cavity containing the gas to be measured; acquiring mirror reflectivity, which is the mirror reflectivity of the highly reflective mirrors corresponding to the wavelength range information; acquiring a first spectrum, which is the spectrum obtained after emitting a first beam into the optical cavity containing the carrier gas; acquiring a second spectrum, which is the spectrum obtained after emitting a second beam into the optical cavity containing the carrier gas and the gas to be measured; acquiring the extinction coefficient of the gas to be measured at any wavelength within the wavelength range based on the optical path data, mirror reflectivity, first spectrum, and second spectrum; acquiring reference absorption cross-section data of the gas to be measured within the wavelength range; acquiring a fitting model of the gas concentration based on the reference absorption cross-section data and extinction coefficient; and acquiring the gas concentration based on the wavelength range and the fitting model. This application can improve the accuracy of gas concentration measurement.

The invention relates to the technical field of gas detection, and particularly discloses a TDLAS (Tunable Diode Laser Absorption Spectroscopy) detection method for inhibiting methane and ethane cross spectrum interference, which comprises the following steps: S1, providing a first TDLAS laser and a second TDLAS laser; s2, controlling the first TDLAS laser to enable the central wavelength of output light of the first TDLAS laser to be stabilized at a first target wavelength; a second TDLAS laser is controlled, so that the central wavelength of output light of the second TDLAS laser is stabilized at a second target wavelength; wherein the sum corresponds to different absorption lines of methane and ethane, respectively; by effectively inhibiting cross interference: selecting a specific wavelength combination of 1654nm and 1683nm, utilizing the absorption cross section difference of methane and ethane at the two wavelengths and combining a linear equation set for resolving, respective concentrations can be accurately separated from superposed absorption signals, and the cross interference is fundamentally inhibited.

The application belongs to the technical field of environmental monitoring, and discloses a OH-HO2-RO2 multi-radical standard source generation method and device and application thereof, wherein different water vapor content wet air is controlled to enter a flow tube and receive 184.9nm ultraviolet irradiation to generate synchronous photolysis, and based on the real-time measured water vapor content, ultraviolet radiation intensity value and the absorption cross-section value of oxygen and water vapor at 184.9nm, the OH and HO2 concentrations generated in the flow tube are inversed; carbon monoxide or different kinds of volatile organic compounds are controlled to be added into the flow tube to react with OH radicals to generate stable concentrations of HO2 or RO2. 6 10 3 The method and device can generate specific concentrations of OH, HO2 and different kinds of RO2 on line, and the concentration of generated radicals can be adjusted according to requirements, the concentration range is 10​​

The application discloses an online optical resonant cavity mirror reflectivity automatic measuring device, which comprises a light source module, an optical resonant cavity module, an air path module, a detection and collection module and a control and driving module. A computer controls standard gas in the air path module to enter the optical resonant cavity. The emergent light is split by a fiber beam splitter, and the detection optical fibers are connected to a spectrometer and a filter wheel respectively. The computer controls a stepping motor to rotate through a driving device, and then controls the filter wheel to rotate so that a band-pass filter selects light of a specific wave band to pass. The passed light is converted into an electric signal through a photomultiplier. The computer obtains the electric signal through an acquisition card and determines the spectrum intensity of the passed wave band in combination with the position of the band-pass filter on the filter wheel. According to the Rayleigh scattering cross section and the absorption cross section of the standard gas under different wavelengths, the Rayleigh scattering extinction coefficient and the absorption coefficient of the standard gas are calculated, so that the automatic measurement of the optical resonant cavity mirror reflectivity is completed. The detection efficiency is improved, the complicated process of changing an optical path for calibrating the mirror reflectivity before experiments is avoided, and the workload of people is reduced.

The invention belongs to the technical field of environmental monitoring, and discloses an OH-HO2-RO2 multi-free radical standard source generation method and device and application of the OH-HO2-RO2 multi-free radical standard source generation method and device. Wet air with different moisture contents is controlled to enter a flowing pipe and is irradiated by 184.9 nm ultraviolet rays to generate synchronous photolysis; the concentration of OH and HO2 generated in the flow pipe is inverted based on the moisture content and the ultraviolet radiation intensity value measured in real time and the absorption cross section value of oxygen and moisture at the position of 184.9 nm; carbon monoxide or different volatile organic compounds are controlled to be added into the flow tube and react with OH free radicals, and HO2 or RO2 with stable concentration can be generated. According to the method and the device, OH and HO2 with specific concentrations and different types of RO2 can be generated online, the concentration of generated free radicals can be adjusted according to needs, the concentration range is 10 < 6 >-10 < 10 > mol / cm < 3 >, and the calibration and calibration requirements of an atmospheric free radical measuring device can be met.

A method for Mo-99 irradiation production and energy spectrum optimization based on reactor activation is proposed. This method establishes a three-dimensional high-fidelity neutronics and burnup coupling model of the reactor and irradiation channels. The full neutron energy range is divided into 238 energy regions, and perturbations are applied to the flux of each individual energy region. This yields the importance indicators and curves of Mo-99 production on flux changes in each energy region, thereby identifying positively and negatively important performance regions. For negatively important performance regions, filter nuclides are screened from the absorption cross-section characteristics of natural isotopes, and burnup calculations are performed at different doping levels to obtain production gains. The isotope scheme is then converted into a natural abundance material scheme to determine the optimal filter material and loading method. This invention, through integrated energy spectrum optimization—refined energy spectrum analysis, filter nuclide screening, determination of the optimal energy spectrum control scheme, and impurity assessment—can increase Mo-99 production without adding extra post-processing steps and reduce the risk of radioactive impurity introduction. It is applicable to the industrial and regional supply of Mo-99 for various reactor platforms, including commercial and research reactors.

The present application relates to the technical field of spectrometer calibration, and particularly relates to a spectrometer spectral calibration and radiation calibration method. The technical scheme comprises spectral calibration and radiation calibration. The spectral calibration comprises the following steps: firstly, using a standard light source to perform initial spectral calibration on an uncalibrated spectrometer to obtain an initial spectral calibration equation; secondly, obtaining optical differential thickness data through a sample gas measurement experiment and combining standard gas absorption cross-section data to calculate a wavelength difference value to correct the initial spectral calibration equation to obtain a final spectral calibration equation. The present application improves the absolute error accuracy of the wavelength after spectral calibration by nearly one order of magnitude, greatly reduces the radiation calibration error, significantly improves the stability and accuracy of the radiation calibration, effectively solves the problems of limited spectral lines, poor light source stability and large extrapolation error of the traditional calibration method, and provides a solid guarantee for the high-precision application of the spectrometer in the fields of environmental monitoring, material science, remote sensing technology and the like.

The invention discloses an isomorphic rare earth titanium oxide cluster material as well as a preparation method and application thereof. The general formula of the material is [Re2Ti4O4 (MAA) 14 (EtO) 2], and Re is a rare earth element including one of terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm) and ytterbium (Yb). The preparation method comprises the following steps: mixing corresponding rare earth metal acetate, titanium isopropylate, methacrylic acid and ethanol according to a ratio, carrying out ultrasonic dissolution, and carrying out standing reaction at 60 DEG C for 2 days to obtain a target product. The material has a single and definite molecular structure and a size less than 2 nanometers, can be dissolved in solvents such as propylene glycol methyl ether acetate, can form a film through spin coating, can be exposed by using electron beams or extreme ultraviolet light, and can form a clear pattern after development. The material has high extreme ultraviolet absorption cross sections of rare earth and titanium elements, the synthesis process is simple, the yield is high, a formed film layer is low in roughness, excellent resolution capability is shown in the scale range of 30-100 nm, and the material is suitable for high-performance photoresist in advanced semiconductor manufacturing.

The invention discloses three two-photon fluorescent metal organic frameworks (MOFs) materials as well as a preparation method and application thereof, and belongs to the technical field of functional materials. The material is formed by self-assembly through a solvothermal method by taking a bis-triarylated amine derivative tetra (1, 1 '-biphenyl-4-carboxylic acid)-1, 4-phenylenediamine (HTPBD) as an organic ligand and alkaline earth metal ions (Mg, Ca and Sr) as inorganic nodes, and has a definite crystal structure, excellent two-photon fluorescence performance and good thermal stability. According to the invention, the framework topological structure, the chromophore accumulation mode and the pi-pi interaction intensity are accurately regulated and controlled by regulating and controlling the radius of the metal ions, so that the material shows an adjustable two-photon absorption cross section and fluorescence quantum yield, and the two-photon performance of the Ca-based MOFs material is optimal. The material can be widely applied to the fields of information storage, anti-counterfeiting, nonlinear optical devices and the like, solves the technical problems that an existing two-photon fluorescent material is high in cost, difficult in performance regulation and control and the like, and has important practical application value.

Various embodiments herein relate to techniques for depositing photoresist material on a substrate. For example, the techniques may involve providing the substrate in a reaction chamber; providing a first and second reactant to the reaction chamber, where the first reactant is an organo-metallic precursor having a formula of M1aR1bL1c, where: M1 is a metal having a high patterning radiation-absorption cross-section, R1 is an organic group that survives the reaction between the first reactant and the second reactant and is cleavable from M1 under exposure to patterning radiation, L1 is a ligand, ion, or other moiety that reacts with the second reactant, a≥1, b≥1, and c≥1, and where at least one of the following conditions is satisfied: the photoresist material comprises two or more high-patterning radiation absorbing elements, and / or the photoresist material comprises a composition gradient along a thickness of the photoresist material.