1200results about How to "Guaranteed repeatability" patented technology

The invention relates to an enzyme-linked immune analysis method and a fully-automatic enzyme-linked immune analyzer. The analyzer comprises a rack component, a washing component, a sample adding / reagent adding component, a heating and temperature control component, a fluid path system, an input and output device, an optical measurement component and a control system, wherein the rack component comprises a rack soleplate; a pillar is arranged on the rack soleplate; a lower fixed plate and an upper fixed plate are arranged on the pillar from bottom to top in sequence; a circular reaction plate is arranged between the lower fixed plate and the upper fixed plate; the circular reaction plate is connected with the upper fixed plate and the lower fixed plate through a central shaft; a first motor is fixedly arranged at the lower part of the lower fixed plate; and the first motor is used for driving the circular reaction plate to rotate through a first transmission mechanism. When in use, the enzyme-linked immune analysis method and the fully-automatic enzyme-linked immune analyzer can carry out the detection of corresponding projects without wasting reagent through only one sample; and detection reagents need not to be respectively contained in different reagent bottles, so that the operation is very convenient, and the operation error is not easily caused, thereby ensuring the accuracy of the detection results.

Devices and methods for moving a working fluid through a controlled thermodynamic cycle in a positive displacement fluid-handling device (20, 20′, 20″) with minimal energy input include continuously varying the relative compression and expansion ratios of the working fluid in respective compressor and expander sections without diminishing volumetric efficiency. In one embodiment, a rotating valve plate arrangement (40, 42, 44, 46) is provided with moveable apertures or windows (48, 50, 56, 58) for conducting the passage of the working fluid in a manner which enables on-the-fly management of the thermodynamic efficiency of the device (20) under varying conditions in order to maximize the amount of mechanical work needed to move the target quantity of heat absorbed and released by the working fluid. When operated in refrigeration modes, the work required to move the heat is minimized. In power modes, the work extracted for the given input heat is maximized.

The invention provides a production method of a basement for enhancing the raman scattering of a molecule, which comprises following steps of: (1) selecting substrate material, cleaning and hydrophilically treating; (2) producing a micro nanometer structure layer on the surface of the substrate; (3) metallizing the micro nanometer structure layer to obtain the substrate with a nanometer metal structure; (4) decorating the surface of the substrate obtained by the step (3) to obtain a surface decoration layer, wherein the surface decoration is preparation of a gas sensitivity interface or a molecule biological film or an adsorbed film or a surface activated material according to the property of the molecule to be tested to improve the property of the basement to enrich the molecule to be tested and the action for activating the basement; (5) adding the molecule to be tested on the substrate with a surface decoration layer; and (6) changing external medium environment around the substrate to improve the enhancement effect of the raman scattering of the molecule to be tested. The external medium environment around the substrate comprises circumambient environment material, or excitation wave length, or optical field distribution or magnetic field distribution. The production method can be used for high sensitivity test; and the substrate has the advantages of high controllability,consistency, repeatability, stability and the like.

Devices and methods for moving a working fluid through a controlled thermodynamic cycle in a positive displacement fluid-handling device (20, 20′, 20″) with minimal energy input include continuously varying the relative compression and expansion ratios of the working fluid in respective compressor and expander sections without diminishing volumetric efficiency. In one embodiment, a rotating valve plate arrangement (40, 42, 44, 46) is provided with moveable apertures or windows (48, 50, 56, 58) for conducting the passage of the working fluid in a manner which enables on-the-fly management of the thermodynamic efficiency of the device (20) under varying conditions in order to maximize the amount of mechanical work needed to move the target quantity of heat absorbed and released by the working fluid. When operated in refrigeration modes, the work required to move the heat is minimized. In power modes, the work extracted for the given input heat is maximized.

The invention relates to a probe system for an ultrasonic guided wave detection of a marine pipeline and a design method thereof. The probe system provided by the invention comprises multiple probe system unit modules, quick-locking mechanisms, connecting shafts and air sacs, wherein the air sacs are contained in the probe system unit modules; the probe system unit modules are connected through the connecting shafts; the two adjacent probe system unit modules can rotate around the connecting shafts to form a flexible structure; the probe system unit modules which are connected into a whole encircle the outside surface circumference of the detected marine pipeline; the two probe system unit modules at the head and the tail are connected and clamped through the quick-locking mechanisms so as to be annularly positioned at the outside surface circumference of the detected marine pipeline; and the probe system unit modules are sealed by a waterproof material. In the design method provided by the invention, the probe rings and probe ring clamp systems of probe systems are of a modular structure; the probe rings comprise the multiple probe system unit modules; the probe ring clamp systems comprise clamp modules and are mutually connected through the connecting shafts; and the heads and tails of the probe ring clamp systems are locked through the quick-locking mechanism to form the probe system with certain flexibility.

The invention provides a device and a method for testing normal-temperature and high-temperature compression stress relaxation of rubber. The device mainly comprises an upper plate, a lower plate, a limiter, a pressure sensor, a pressure head and a flange. The upper plate is fixed to the lower plate through the limiter. The pressure sensor is fixed at a center position of the upper plate and is located between the upper plate and the lower plate. The pressure head is fixed at another end of the pressure sensor. A rubber sample is fixed at a center position of the lower plate by the flange and contacts with the pressure head. The method comprises the following steps of preparing an appropriate rubber sample, assembling the device, fixing exactly the appropriate rubber sample at the center of the lower plate, contacting the appropriate rubber sample with the pressure head, removing the flange, putting the device into an aging test box for an experiment, and after the experiment is finished, determining compression stress relaxation coefficients of the appropriate rubber sample. Through the device and the method, normal-temperature and high-temperature compression stress relaxation tests are realized; real-time monitoring of compression stress variation is realized; and the accuracy, the repeatability and the reproducibility of a life prediction result are guaranteed.

The invention discloses a two-dimensional code encryption / decryption method. The method comprises the following steps that: two-dimensional code original information is obtained; an EK (electronic key) encryption key is used to perform ECC (Error Correction Code) encryption operation on the two-dimensional code original information and real-time clock information to obtain encrypted data jumped as time goes; the encrypted data is encoded to generate a new two-dimensional code figure; the two-dimensional code figure jumped as time goes is obtained; the two-dimensional code figure is decoded to obtain encrypted data jumped as time goes; and DK decryption key is used to perform ECC decryption operation on the encrypted data to obtain decryption information. The two-dimensional code encryption / decryption method performs algorithm encryption according to two-dimensional code original data, generates the two-dimensional code jumped as time goes, and ensures that the two-dimensional inquiry codes obtained by terminal users are different for each time, verification steps are decreased, and the security and the non-repeatability of the two-dimensional code are guaranteed.

The invention discloses an array electric fluid jet printing head characterized by independently controllable nozzle jet. The array electric fluid jet printing head comprises a guide electrode layer arranged between a nozzle array and a receiving plate, and a plurality of round holes corresponding to nozzles in number are formed in the guide electrode layer; the centers of the round holes are collinear with the centers of the nozzles; a circle of conducting ring is coaxially disposed on the outer periphery of each round hole in the guide electrode layer, and is connected with one voltage source; and the nozzle array is connected with the jet voltage sources; and the voltage value of each voltage source is properly adjusted, so that the voltage differences of the nozzles required for jet printing and the corresponding conducting rings are greater than the voltage differences of the remaining nozzles, the field strength of the nozzles for jet is greater than the field strength needed to start the jetting, the field strength of the nozzles not required for jetting is lower than the field strength needed to start the jetting, and the independent control of all the nozzles can be realized. The invention further discloses a realization method of the independent control of the jet of the nozzles. The array electric fluid jet printing head and the realization method can solve the problems of complex structure and incapability of large-scale integrated use in the conventional independent jet control to printing heads.

The invention provides an underground highway tunnel fire disaster experiment simulating device adopting a vertical shaft to carry out natural smoke extraction. The device comprises a main experiment table body and a matched measuring and controlling system. The experiment device serves as a small-sized experiment table which is specially used for carrying out comprehensive system researches on heat release rates, smoke movement, fire disaster detection and putting-out and the like in a fire disaster of an underground highway tunnel adopting the vertical shaft to carry out the natural smoke extraction. On the basis of previous experience, the device disclosed by the invention overcomes the defects of high cost of a full-sized experiment and inaccuracy of a numerical value simulating tool, and also guarantees the repeatability of experiments, thus having great application values on implementing a laboratory scientific research and simulating tests of actual tunnel smoke control, vertical shaft smoke extraction effects, and a detection and putting-out system. Therefore, the device disclosed by the invention has wide application prospect and important actual guiding meanings on the smoke control, the design of the detection and putting-out system, and test evaluation and research of the fire disaster of the underground highway tunnel adopting the vertical shaft to carry out the natural smoke extraction.

The invention relates to a preparation method of nano silicone-acrylate core shell type composite latex for latex paints. The preparation method solves the problem that latex paints prepared from the common latex is insufficient to meet the demands of people at the performance aspects of water resistance, weather resistance, pollution resistance and the like, and simultaneously reduces the restraint degrees of a region domain and a time and season domain for latex construction. In the preparation method, active organic silicon and acrylate monomers are mainly used as raw materials, and then the nano silicone-acrylate core shell type composite latex using polyacrylate as a core and using silicone-acrylate composite resin as a shell is synthesized by adopting a monomer pre-emulsifying process and a seed semi-continuous latex polymerization method, so that the preparation method has the advantages of stable polymerization process and convenient large-scale production. When used for preparing the latex paints of outer walls, the synthesized latex can greatly improve all performance of the latex paints, also solve the conflicts between the lowest film-forming temperature and film hardness and simultaneously realize the unification of the cost and the performance.

The invention provides a test device and a test method for testing building structural adhesive bonding tensile stress relaxation. The test device comprises a fixed support, a tensioning device, a test piece, a fixture and a digital dynamometer, wherein the test piece is detachably mounted on the fixture and receives the tensile force from tensioning device through the fixture. The test method comprises the steps as follows: the cured test piece is assembled on the test device; a turnbuckle of the tensioning device is rotated to adjust the force applied to the test piece; the test device is entirely placed on an outdoor natural exposure field or selectively placed in a manual ageing chamber, so that the tensile stress under the corresponding ageing condition can be measured; the tensile stress after ageing is compared with the tensile stress before ageing, so that the tensile stress relaxation coefficient can be obtained. By the aid of the test device and the test method, building structural adhesive bonding tensile stress relaxation after various ageing tests can be tested, changes of the tensile stress can be monitored in real time, and a means is provided for evaluation of the bonding ageing durability and prediction of the service life of a building structural adhesive.

The invention relates to a four-position full automatic locker moulding machine and a method thereof. The four-position full automatic locker moulding machine comprises a feeding mechanism, a cutting mechanism, a moulding mechanism, a discharging mechanism and a position shifting mechanism all mounted on a platform. The position shifting mechanism comprises a core turntable arranged above the platform and an edge trimming mechanism, and the edge trimming mechanism, the discharging mechanism, the cutting mechanism and the moulding mechanism are distributed anticlockwise with the same radian according to the core turntable. The feeding mechanism is arranged on the corner between the discharging mechanism and the cutting mechanism, and the discharge end of the feeding mechanism is arranged just opposite the charging end of the cutting mechanism. Eight core seats are fixed on the periphery of the core turntable with the same radian, and the core seats can be matched with the edge trimming mechanism, the discharging mechanism, the cutting mechanism and the moulding mechanism face to face in turn after being rotated. The method of the four-position full automatic lock moulding machine comprises steps of charging, cutting, position shifting, moulding, edge trimming and discharging. The four-position full automatic lock moulding machine can manufacture finished products of high unity, can produce engine lockers of various specifications through replacing cores and moulding cavities, and has the advantages of simple replacement and high production efficiency.

The utility model provides a life predicting model based on test equipment for room-temperature and high-pressure compression stress relaxation of rubber. The life predicting model comprises the following steps of: firstly, drawing stress relaxation change data acquired by the device into a diagram to obtain the relation between the stress relaxation condition and the ageing time and the relation between the speed constant and the ageing temperature; secondly, obtaining all coefficients in the equation by utilizing an approximation method, a linear regression method and MATLAB programming software, and judging the linear regression effect according to the related method; and finally, determining a rubber life predicting value after giving critical values of temperature and stress relaxation. The life predicting model has the advantages that the device for testing the compression stress relaxation of high-temperature rubber can be utilized for monitoring the change of the compression stress, so as to establish the life predicting model, and the accuracy, the repeatability and the reproducibility of a life predicting result are guaranteed.

The invention relates to a sampling device and method of gas chromatographic online analysis transformer dissolved gas, which comprises sampling probe, temperature sensor, multi-ported valve, sample quantitative pipe, marginal gas quantitative pipe, cutoff valve and marginal gas regulating system. The method directly inserts sampling probe into transformer oil and presses marginal gas into sampling probe by switching of multi-ported valve; the transformer oil is circulated by oil pump so that the dissolved gas of transformer oil can spill into marginal gas and then it achieves gas-liquid equilibrium in probe.

The invention discloses a reaction vessel for a luminescence tester and a cleaning and separating mechanism thereof. The reaction vessel is made of a transparent material and is flat, the opening of the reaction vessel is larger than the bottom of the reaction vessel, the reaction vessel is placed in a cleaning turnplate in the circumferential direction, the flat sides of the reaction vessel are in the circumferential direction, a suction pin and a drawing pin are arranged above the reaction vessel, and magnets used for magnetic separation are placed on the flat sides of the reaction vessel so as to attract magnetic bead particles to one side of the reaction vessel fast and prevent the magnetic bead particles from being sucked away by the suction pin during cleaning; to completely remove impurities, the magnets are placed on the two flat sides of the reaction vessel alternately to enable the magnetic beads to move to the other side from one side of the vessel during cleaning, impurities possibly precipitating under the magnetic beads are released, so that the reliability and repeatability of measurement results are guaranteed, the number of times of cleaning is reduced, and testing speed is increased.

The invention provides a chip peeling device, which comprises a thimble clamping and moving assembly and a rotary driving assembly, wherein the thimble clamping and moving assembly comprises a thimble shaft supporting piece, a thimble shaft is fixed on the thimble shaft supporting piece, the exterior of the thimble shaft is provided with a thimble shaft sleeve, the top of the thimble shaft extends out of the thimble shaft sleeve and is connected with a thimble clamping piece, and the bottom of the thimble shaft is sleeved with a compression spring; and the exterior of the thimble clamping piece is provided with a thimble outer cover, and the top center of the thimble outer cover is provided with a pore through which a thimble extends out. As optimization, the chip peeling device also comprises a lifting mechanism and a three-degree-of-freedom alignment platform, wherein the lifting mechanism is used for realizing integral lifting of the thimble clamping and moving assembly and the rotary driving assembly; and the three-degree-of-freedom alignment platform is used for adjusting the position of the thimble in three directions X, Y and Z. The chip peeling device is very convenient to adjust the position of the center of the thimble, ensures that the center of the thimble is aligned with the center of a pickup device, is also very convenient to realize replacement of the thimble, and ensures the height and position consistency of the replaced thimble.

The invention discloses a data cleaning method and a cleaning engine. The method is applied to the cleaning engine and comprises the steps that data to be cleaned submitted by all service systems is received; the data to be cleaned is cleaned with cleaning rules, and clean data meeting cleaning conditions is determined; the clean data is sent to a main data system.

A package device for applying pre-stress on a fiber grating sensor comprises, on a pedestal, a left mounting base connected with a left moving stage, a right mounting base connected with a right moving stage, a platform lifting rod sleeve arranged between the left mounting base and the right mounting base, a left lifting sleeve arranged on the left moving stage, a right lifting rod sleeve arranged on the right moving stage, a translation conversion mechanism arranged on the left and the right moving stages, a left lifting rod arranged on the top of the left lifting rod sleeve and connected with a left clamp frame, a right lifting rod arranged on the top of the right lifting rod sleeve and connected with a right clamp frame, and a platform lifting rod arranged on the upper end of the platform lifting rod sleeve and connected with a platform. The package device has the advantages of simple mechanical structure, small size, low cost, easy operation, etc., and can be used in a temperature range of subzero 25 DEG C to above-zero300 DEG C to achieve high-temperature curing package when applying pre-stress to a fiber grating. The fiber grating sensor packaged by the device has no chirp and waveform aberration, thus ensuring the repeatability and the linearity of the sensor.

The invention relates to a test method for a vehicle active safety early warning system. The test method comprises the steps of collecting and storing data; collecting the panoramic video information and the vehicle state information during the actual driving process of a vehicle; adding the panoramic video information and the vehicle state information into the synchronous time information to form a test scene; storing the test scene in a storage device; reproducing the test scene; inputting the test scene in the storage device into a to-be-tested vehicle active safety early warning system at a test site; conducting the function test: namely testing the logic function of the to-be-tested vehicle active safety early warning system. According to the technical scheme of the invention, the test method and the test device for the vehicle active safety early warning system are high in test precision, strong in reliability and low in test cost. The consistency of the real vehicle road test and the off-line test is guaranteed. Meanwhile, the fault reason of a product can be effectively analyzed.

The invention provides a chamber fire simulation experiment device under the action of external wind. The device can simulate chamber fire combustion conditions in a laboratory under the action of the external wind and can be used for researching chamber fire development and windowsill overflow rules under the action of the external wind. The chamber fire simulation experiment device under the action of the external wind comprises an experiment table body, an outer vertical face, an external wind system and a matched measurement and control system. The device is designed according to a medium-size model proportion of 1:3 and is the first experimental device carrying out comprehensive and systematic study on the heat release rate, smoke flowing, temperature distribution, smoke compositions, the air supplement speed, thermal radiation flux, flame forms, sill overflowing and the like of a chamber fire under the action of the external wind. On the basis of previous experimental bases, the defects that a full-scale experiment is high in cost and a numerical simulation tool is not precise enough are overcome, repeatability of the experiment is guaranteed, and the device has great application value and important guiding significance in conducting laboratory scientific research and influences of actual external wind on the chamber fire.

The invention discloses an extendable embedded type device for fixing and recovering a microseismic sensor and method of using the same. The device comprises three parts of a protective cover, a connecting sleeve, an extendable supporting and fixing structure. The protective cover is composed of a fit cone, a fixing shaft and a cover wall with a mesh. Two ends of the connecting sleeve are respectively provided with internal and external threads. The extendable supporting and fixing structure is composed of a supporting shaft, a connecting ring, a "skeleton", a limit bolt, a limit groove, a supporting pipe, an elastic rod, an elastic cap with a baffle and an elastic shaft. The fit cone at one end of the protective cover is in close contact with coal. A microseismic sensor is located in the protective cover and fixed on the fixing shaft of the protective cover. The other end of the protective cover is connected with one end of the connecting sleeve through the internal thread. The other end of the connecting sleeve is connected with the supporting shaft of the fixing structure through the internal thread. The elastic cap with the baffle is screwed on, the elastic rod is supported tightly, and the supporting pipe is pushed to enable the "skeleton" to open so that the entire device is embedded, supported and fixed into the coal of a drilling hole. In the recovery, the elastic cap is screwed off, the supporting pipe is pulled to enable the "skeleton" structure to close, and the elastic rod, the connecting sleeve, the protective cover and the senor are removed in sequence.

The invention relates to carrier communication test equipment, which is characterized by comprising test bench body and a computer body, wherein the test bench body is connected with the computer body by Ethernet; and the computer body is operated to control the test bench body, change channel parameters and acquire test information. The equipment tests the performance of communication between an acquisition terminal and a carrier electric meter; and a design scheme of constructing low voltage power line carrier communication channels in the test equipment is put forward, so that a system counts communication results and measures the channel parameters in a continuous communication state to obtain index parameters of a current carrier communication channel, low voltage power line carrier communication equipment meets the requirements of related standards, and technical support is provided for the acceleration of construction of a power consumer power consumption information acquisition system and a robust smart power grid.

The invention provides a device for welding plastic materials in a laser transmission manner. The device comprises a supporting plate, a laser light source and a pressure regulating mechanism, wherein the pressure regulating mechanism comprises a pressing plate mechanism, a supporting plate, a guide rail and a drive mechanism; the pressing plate mechanism is connected with the drive mechanism andis connected with the supporting plate through the guide rail; the pressing plate mechanism is provided with a light-transmitting window consisting of a light-transmitting window opening and a light-transmitting window body; plastic materials to be welded are positioned on the supporting plate and correspondingly arranged below the light-transmitting window; and the laser light source is sequentially connected with the light-transmitting window and the plastic materials to be welded through laser beams. The invention also provides a welding method realized by the device. According to the invention, the plastic materials to be welded are under proper pressure, and further generate secondary polarization to be combined together, thus welding quality and welding strength are ensured.

The invention provides a lead-acid storage battery online monitoring, maintenance and early warning system and a performance evaluation method. The system comprises an S7400CPU module, an ET200 distributed IO, a direct current voltage transmitter, a direct current current transmitter, a PT100 temperature sensor, an internal resistance testing switch, a series resistor, a battery charging switch and a battery charging system. The method analyzes the failure performance of a storage battery based on a control model method of an artificial neural network control and ECS expert self-learning control system. The system is free of a single-chip microprocessor control chip and employs the Siemens S7400PLC and the distributed IO mode thereof and the transmitter mode is employed to convert collected signals to standard signals for PLC input; a comprehensive test analysis model for storage battery performance evaluation is put forward; the analysis model integrates methods for testing the voltage, the dispersion of the voltage and the internal resistance of a storage battery to perform analysis and evaluation of current performance of a storage battery, so that accurate storage battery performance parameter values can be obtained.

The invention discloses a device for preparing near-field optical probes and a method therefor. The device comprises damping rubber, a support soleplate, a three-phase brushless motor, an adjusting bracket and an optical microscope, wherein the support soleplate is horizontally arranged on the damping rubber; and the three-phase brushless motor, the adjusting bracket and the optical microscope are fixed on the support soleplate. The method comprises the following steps: firstly, fixing a silica fiber on the adjusting bracket and above an abrasive substance in a set angle; and when the abrasive substance is rotated, making the fiber approach the abrasive substance and generate friction, rotating the fiber in different angles along the axial direction of the fiber, repeatedly approaching and rubbing a grinding sheet, and preparing the near-field optical probes with different shapes such as triangular pyramid, rectangular pyramid, circular cone and the like by grinding. The method overcomes the limitation of preparing the taper angle of a fiber optic probe, can directly set a grinding taper angle, and has flexible manufacturing mode, safe and environment-friendly manufacturing process, short preparation time, accurate control of parameters, good repeatability; and the whole device has simple and convenient operation and low preparation cost.

The invention relates to a subway carriage fire experiment table. The experiment table is same as a practical subway carriage in structure and is respectively provided with a door and a window at the left and the right; for the length, two ends of the experiment table are respectively provided with a front end door and a rear end door; the top inside the carriage experiment table is uniformly distributed with over three temperature probe strings inside the carriage; the upper part of the front end door is respectively provided with a temperature probe string, a speed probe string, an oxygen concentration probe and a monoxide concentration probe; one side of the exterior of the front end door is provided with a staff gauge; the middle-upper part inside the carriage experiment table is provided with an oxygen concentration probe and a monoxide concentration probe; and a camera system is arranged outside the window at one side of the experiment table. The experiment table is a large experiment table which first comprehensively and systematically researches heat release speed, smoke movement, fire detection and saving and the like of subway carriages, overcomes scale reduction and experiment error caused by a partial model experiment table, and ensures the repeatability of experiments.

The invention discloses a device and a method for testing automotive active safety systems on a bench. The device comprises a camera bellow, a to-be-tested system, a display, an upper computer and a lower computer. Scene animation required by tests is generated by the upper computer and is displayed via the display; the scene animation is acquired by the to-be-tested system; movement of a to-be-tested automobile is simulated by the lower computer in real time, the lower computer is communicated with the to-be-tested system via a CAN (controller area network) bus, automobile state and driver operation information is transmitted to the to-be-tested system, and bus data transmitted by the to-be-tested system are received; the lower computer is communicated with the upper computer via a network cable, and running data of the automobile are transmitted to the upper computer, so that the scene animation can be updated in real time; the upper computer is further used as a test managing and monitoring platform. The device and the method have the advantages that active safety tests are carried out on the automobile on the bench, so that field tests or field data acquisition can be omitted, test workload can be reduced, test risks and the test cost can be decreased, and the test repeatability can be improved; large test working condition databases can be omitted, and accordingly the test working condition data can be conveniently managed.

The invention discloses a mushroom array type surface enhanced Raman spectrum active substrate and a preparation method of the mushroom array type surface enhanced Raman spectrum active substrate. The active substrate is a gold or silver mushroom nano-structure array. The preparation method comprises the following steps: impressing a through hole in a photoresist on the surface of a silicon or glass substrate with a gold film by using a nano-impressing technology; then performing electro-deposition to form the mushroom nano-structure array. The mushroom nano-structure array is mainly characterized in that the diameters of mushroom cap parts are 50-300nm; the distance between the caps is 0-50nm. According to the substrate, the enhancement effect of a Raman scattering signal can be greatly improved.