56results about How to "Experimental environment requirements are low" patented technology

The present invention relates to a free multi-view real time three-dimension reconstructing system and a method thereof. The system consists of a CCD vidicon, a computer assembled with a multi-channel image collecting card and a plane demarcating template. Two concentric circles and eight tangential paths with prolonged lines crossing the circle center are drawn on the center of the plane demarcating template and are used for demarcating the vidicon parameter. In the technical proposal of the present invention, a reconstructing object is fixed at the center of the demarcating template; the template is held by hand to drive the reconstructing object to rotate freely within the range of the view and the depth of field of a vidicon at a fixed position; image collection and object reconstruction are processed synchronously, thereby being capable of finding concentrated missed view in time and displaying reconstruction result in real time. The three-dimension reconstructing method comprises the steps of image segmentation, full-automatic vidicon demarcation and the three-dimension reconstruction of object shape, etc. The three-dimension reconstructing system of the present invention is based on the computer vision technology, and the reconstructing method is based on the profile recovery shape and can realize free multi-view real time three-dimension reconstruction.

The invention relates to a full-spectrum super-resolution measuring method and a label-free biomolecule measurement system. The method and the system are characterized in that membrane layers with different thicknesses ranging from 300nm to 4500nm are arranged on a chip and used for encoding, then sample application is carried out on the chip by means of probe protein to form a biological chip, the probe protein of the biological chip is fully combined with a to-be-tested sample, a to-be-tested object in the to-be-tested sample is arranged on the probe protein through specific adsorption, light beams with light intensity of I0 are vertically cast on the biological chip, when the light beams are vertically cast on the biological chip only covered with the membrane layers, different reflection spectrums are produced due to the different thicknesses of the membrane layers, thickness encoding of the biological chip is achieved, by means of an interference extremum method, the thicknesses t of the membrane layers of the biological chip are decoded according to wavelengths of extreme points in a light spectrum, when the light beams are cast on the to-be-tested object combined with the probe protein, thickness changes of the membrane layers in the range delta occur, intensity amplitude differences are obtained through calculation, and the thickness of the to-be-tested object is obtained. The method and the system can be widely used in thickness measurement of biomolecules.

The invention relates to a molybdenum disulfide nano sheet and a preparation method thereof. In inert atmosphere, sulfur source and molybdenum source enable steam contact and chemical vapor deposition, vertical molybdenum disulfide nano sheet can be formed on a substrate; the reaction condition for chemical vapor deposition is characterized in that the reaction temperature is 690-750 DEG C, and reaction time is 5-60 minutes. The molybdenum disulfide nano sheet has the advantages of special morphology and uniform size, most part of the molybdenum disulfide nano sheet is single layer, uniform growth in large area can be realized, the size is 0.3-2mum, and the thickness of molybdenum disulfide nano sheet is less than 1nm. Compared with a traditional preparation method of molybdenum disulfide sheet layer, the method of the invention has the advantages of simple technology, convenient operation, easy realization of large scale production, and low requirement on experiment environment; carbon disulfide is used for replacing a traditional solid phase or gas phase sulfur source, so that defects of difficult control of sulfur source introduction and cut-off time point by the solid state sulfur source can be overcome, and hidden trouble for usage of inflammable and explosive gaseous state sulfur source can be simultaneously avoided.

The invention discloses a preparation method of a field-induced nonlinear conducting composite material, a prepared composite material and an application thereof and relates to the field of nonlinearconducting composite materials. The preparation method comprises the following steps: taking KH560, ethanol and deionized water to obtain a solution A; adding GO into the solution A to react for 3-5 hours at 75-85 DEG C to obtain a suspension B; adding alkali into the suspension B till the pH is 10, adding hydrazine hydrate to be dispersed, heating the mixture to 85-95 DEG C to react for 5-7 hoursto obtain a suspension C, washing, suction filtering and drying the filter cake to obtain RKGO powder; mixing the RKGO powder, epoxy resin E-51 and acetone to obtain a suspension D, carrying out a reaction at 75-85 DEG C till the acetone is volatilized fully and cooled to 45-50 DEG C, adding a 2-ethyl-4-methylimidazole liquid to react, and extracting bubbles to be cured to obtain a composite material, wherein the RKGO filling mass fraction in the composite material is 0.75-1.50%. The preparation method is simple, low in cost, short in reaction time and easy to prepare massively. The preparedcomposite material is light in weight, good in uniformity and high in conducting nonlinear coefficient, and can be used in the fields of overvoltage protection, lightning stroke and surge protection,static prevention and self-adaptive electromagnetic pulse protection.

The invention discloses a method for directly growing a Prussian-blue film on FTO conductive glass. The method includes: mixing potassium ferricyanide, reducing agent, concentrated hydrochloric acid and deionized water, transferring into a hydrothermal reaction kettle, placing a piece of FTO conductive glass into the hydrothermal reaction kettle, allowing the conductive face of the conductive glass to face downwardly, performing constant-temperature hydrothermal reaction at 100-120 DEG C for a certain period of time, and naturally cooling to room temperature after the reaction, wherein the reducing agent is optionally selected from glucose, oxalic acid or polyvinyl pyrrolidone; taking out the FTO conductive glass in the reaction kettle, washing with the deionized water, and blowing with a blower for drying to obtain the Prussian-blue film. The Prussian-blue film prepared by the method is good in electrochromic effect.

The invention discloses an apparatus to prepare methane hydrates under normal pressure. The apparatus comprises: a foaming unit for generating foam; a liquid supply unit for providing a low-temperature methane liquid; a reactor unit having the upper end communicated with the foaming unit and the lower end communicated with the liquid supply unit, and used for generating methane hydrates; a data acquisition unit for acquiring interior temperature and resistivity of the reactor unit. The apparatus herein has the advantages that the low-temperature methane liquid is introduced into a storage tankunder the normal pressure and low temperature, high-ratio foam liquid is generated via the foaming device, and methane hydrates are generated during the process where the low-temperature methane vapor moves up and gains contact with the foam to give rise to heat and mass transfer; the whole experimental process is simple to perform, has low experimental environment requirements, is suitable for quick preparation of methane hydrates under normal pressure, and has the advantages of low time consumption, low cost, and high experimental repeatability.

The invention relates to a test platform capable of providing a low temperature environment, and belongs to the technical field of pool test. The test platform comprises a support, a toughened glass framework, an ice pushing device and a refrigeration system. The support is composed of an inner support and an outer support, and has the advantages including rapid installation and low cost. Use of the toughened glass provides convenience for video-recording and shooting of a test process. The ice pushing device can install U-shaped plates of different widths, lengths and heights according to different test requirements. A pneumatic set and a refrigerating set are used to provide the stable low-temperature environment for the test platform, ice thawing and change of mechanical properties canbe prevented effectively, and the ice state can approach the practical condition more. The test platform can be used for cutting and collision test of propeller and ice as well as collision test of ice and other structured objects, and water can be added into the toughened glass to make a ice-water-structured object test research, and thus, application range of the test platform is wider.

The invention discloses a method for directly growing a tungsten oxide film on conducting glass. The method disclosed by the invention comprises the following specific steps: firstly mixing tungsten hexachloride, absolute ethyl alcohol, tetrahydrofuran and polyethylene glycol, then transferring to a hydrothermal reaction kettle, putting a piece of FTO conducting glass into the hydrothermal reaction kettle, putting a conducting face downwards, performing constant-temperature hydrothermal reaction for certain time and naturally cooling to room temperature after reaction finishes; taking the FTO conducting glass in the reaction kettle out, washing through absolute ethyl alcohol and putting an obtained film into a muffle furnace to be roasted in certain temperature to obtain a tungsten oxide electrochromism film. The tungsten oxide electrochromism film material prepared through the method disclosed by the invention has even morphology and can be applied to electrochromism and the fields related to the electrochromism.

The embodiment of the invention provides a self-accelerating light generation method and device, relates to the technical field of light beams, and aims to obtain required self-accelerating light by creating a light field and increasing a linear phase. According to the specific scheme, the method comprises the steps of creating a light field of self-accelerating light; performing Fourier transformon the light field to obtain the amplitude and the initial phase of the self-accelerating light; determining a phase value, the phase value including an initial phase and a linear phase; and loadingthe amplitude and the phase value to a light path generation device to obtain the light source.

The invention discloses a preparation method of a field-sensitive nonlinear conductive film, a prepared film and an application and relates to the field of conductive film materials. The preparation method comprises the following steps: stirring polyvinyl alcohol and deionized water at normal temperature, heating to the temperature of 85-95 DEG C, continuously stirring until the polyvinyl alcoholis completely dissolved so as to obtain a solution E; and adding silver nanowire into the solution E, and stirring at the temperature of 60-70 DEG C for 10-15 hours so as to obtain a composite material fluid, performing film casting, and volatilizing the solvent, thereby obtaining the field-sensitive nonlinear conductive film, wherein the polymerization degree of the polyvinyl alcohol is 1700, thealcoholysis degree is 99%, the silver nanowire length is 10-14 microns, the diameter is 80-120nm, and the draw ratio L/r is 80-350; and the AgNWs packed volume fraction in the field-sensitive nonlinear conductive film is 1.05-2.44%. The method is simple in process, low in cost, short in reaction time and capable of realizing large-scale preparation; and the prepared film is uniform in distribution, excellent in dispersion property and aggregation-free, has very obvious nonlinear conductivity, and can be applied to the adaptive protection field of overvoltage protection, lightning surge and electrostatic discharge.

The invention provides a method for growing a perovskite single crystal by using a layer solution method, and belongs to the technical field of single crystals of perovskite materials. According to the present invention, by adding the frozen layer of a solution A or solution B between the solution A and the solution B, the mixing rate of the solution A layer and the solution B layer can be reduced, and the heat released by the reaction of the two solution layers can be offset by the frozen layer, such that the reaction between the two solution layers is gentle, the crystal nucleation and growth process is stable, and the perovskite single crystal obtained after the standing culture has characteristics of large size, high quality and flat surface; the method has advantages of simple operation, no requirement of precise growth equipment, low requirements on the experimental environment, low cost and wide universality for the single crystal preparation; and the results of the embodimentsshow that the perovskite single crystal obtained by the method can have a length of 0.5-2 cm, and has good crystallinity.

The invention relates to a method for analyzing the storage time of medicinal-flavor liquor without analyzing compounds, which comprises the following steps: S1, taking medicinal-flavor liquor samplesof different years, respectively standing for a preset period of time, and diluting to obtain a diluent; S2, respectively inserting a three-electrode system into the diluent, and collecting electrochemical fingerprints of the medicinal-flavor liquor samples of different years; S3, determining a function relationship between the liquor year and the characteristic oxidation peak value according tothe electrochemical fingerprint spectrums of different years; S4, sequentially treating the medicinal-flavor liquor of the to-be-detected year by the steps S1 and S2 to obtain an electrochemical fingerprint spectrum of the liquor of the to-be-detected year; and S5, fitting according to the characteristic oxidation peak-to-peak value of the electrochemical fingerprint spectrum of the liquor of theto-be-detected year and the function relationship to obtain the storage year of the medicinal flavor type liquor of the to-be-detected year. According to the method, the characteristic oxidation peakvalue is detected by analyzing the relationship between the content of the electrochemical active substances in the liquor and the time, so that the year of the liquor is detected and judged.