Optical / electrical / current field vertical test apparatus and method for x-ray scatter absorption

Abstract

The application discloses a kind of photo / electricity / flow field vertical test equipment and method for X-ray scattering absorption.The equipment includes device main body one, device main body two, fluid transmission pipeline, electrode one, electrode two;Device main body one and device main body two are oppositely arranged, and the surface of mutual contact is equipped with two groups of mutually perpendicular grooves, when two are assembled together, one group of grooves oppositely forms first passage for fluid inlet and outlet, and the other group of grooves oppositely forms second passage for limiting electrode one, two;The area that first passage and second passage vertically intersect is recorded as area O;Electrode one, electrode two are respectively connected with voltage source, for the fluid in fluid transmission pipeline to flow through area O, and the electric field that is perpendicular to fluid flow direction is applied;Device main body one, two are respectively equipped with a light transmission hole, and two light transmission holes oppositely form third passage when two are assembled, for transmission synchronous radiation light to the fluid that flows through area O, and the optical field that is perpendicular to fluid flow direction and electric field is applied.

Description

Technical Field

[0001] This invention belongs to the field of synchrotron radiation characterization technology, specifically relating to a testing device and method for the perpendicularity of the optical, electrical, and fluid fields in synchrotron radiation scattering and absorption technology. Background Technology

[0002] Synchrotron radiation is electromagnetic radiation produced by electrons moving at near-light speeds in a magnetic field in a non-uniform manner. It is considered by the scientific community to be a high-quality characterization probe due to its excellent characteristics such as a continuous broad spectrum (from far-infrared to hard X-rays), high brightness, and high collimation. It is of great significance for scientific research in various fields, including condensed matter physics, catalytic chemistry, and biology. With the upgrading and expansion of synchrotron radiation sources in my country, more and more synchrotron X-ray characterization techniques for specific fields have been developed, and targeted experimental equipment to serve related research urgently needs to be developed.

[0003] Anisotropic dielectric particles dispersed in an insulating liquid constitute a complex fluid, whose mechanical properties change significantly with variations in the applied electric field. Studying the aggregation behavior of the dispersed electrolyte particles is crucial for understanding the electric field polarization response of these complex fluids. Current experimental techniques lack adequate equipment to simultaneously apply a vertical electric field to the flowing complex fluid while conducting in-situ X-ray characterization using synchrotron radiation. To meet the needs of experimental research, a testing device suitable for synchrotron X-ray scattering and absorption techniques, achieving perpendicularity of the optical, electrical, and fluid fields, is required. Summary of the Invention

[0004] The purpose of this invention is to fill the gap in the field of synchrotron radiation characterization technology by providing a testing device with perpendicular optical, electrical, and fluid fields suitable for synchrotron radiation scattering and absorption techniques. This device applies an electric field perpendicular to the flow field of a flowing fluid, while simultaneously ensuring that the X-ray light field is incident perpendicular to both fields. This allows for experimental research on a single object dispersed in the fluid using one or more synchrotron radiation characterization techniques, including but not limited to X-ray diffraction spectroscopy, X-ray absorption spectroscopy, and small-angle X-ray scattering.

[0005] The objective of this invention is achieved through the following technical solution: a testing device for perpendicular optical / electrical / fluid fields suitable for synchrotron radiation scattering and absorption technology, comprising a device body one, a device body two, a light incident window, a light exit window, a fluid input pipe, a fluid output pipe, an electrode one, an electrode two, bolts, and nuts; the device body one and device body two are arranged opposite to each other, each having a through-hole along its axial direction as a channel for synchrotron radiation light to enter and exit; the light incident window and the light exit window respectively cover the through-holes of the device body one and device body two; the contact surfaces of the device body one and device body two have two sets of opposing grooves, respectively serving as a channel for fluid entry and exit and a channel for electrode sliding (used to restrict the sliding of the two opposing electrodes to be on the same straight line); the electrode one and electrode two are disposed in the aforementioned set of opposing grooves and connected to a voltage source; the fluid input pipe and the fluid output pipe are disposed in the aforementioned set of opposing grooves and connected to a fluid reservoir. The electrode one and electrode two are engraved with scales, and their insertion depth is controlled manually or electrically.

[0006] Preferably, the light incident window and the light exit window are transparent to X-rays. The incident light field passes through the light-transmitting hole of the first device body and the light incident window to irradiate the fluid, and then passes through the light exit window and the light-transmitting hole of the second device body to leave the test device.

[0007] Preferably, the light-transmitting holes of the device body one and device body two have a large-angle chamfer on the side that does not contact the fluid, in order to facilitate the acquisition of emitted light signals.

[0008] Preferably, the light incident window and the light exit window are covered on the light transmission holes of the device body one and the device body two by means including but not limited to flange fixing, sealing ring compression, and adhesive bonding, so as to ensure the sealing of the test device and prevent fluid leakage.

[0009] Preferably, the first electrode and the second electrode are made of a material with good electrical conductivity, and their bottom surfaces face each other and are smooth and flat, so as to ensure that the electric field applied to the incident light field irradiation area is uniform.

[0010] Preferably, except for electrode one and electrode two, all other parts are made of insulating material to prevent interference with the electric field applied to the sample.

[0011] Preferably, the first electrode and the second electrode are disposed on the first device body and the second device body by means including but not limited to flange fixing and sealing ring compression, so that the first electrode and the second electrode can slide along the grooves on the first device body and the second device body, and ensure the sealing of the test device to prevent fluid leakage.

[0012] Preferably, the inner and outer diameters of the fluid inlet pipe and the fluid outlet pipe are exactly the same, and their axes coincide, to ensure a uniform flow field of the fluid in the test device.

[0013] Preferably, the fluid inlet pipe and the fluid outlet pipe are fixed to the device body one and device body two by means including but not limited to flange fixing, sealing ring compression, and adhesive bonding, so as to ensure the sealing of the test device and prevent fluid leakage.

[0014] Preferably, the axes of the light-transmitting holes of the device body one and device body two, the axes of the electrodes one and two, and the axes of the fluid input pipe and fluid output pipe are perpendicular to each other. The bottom surface shapes of the electrodes one and two are exactly the same (or mirror images of each other).

[0015] A test method for a test device with perpendicular optical, electrical, and fluid fields suitable for synchrotron radiation scattering and absorption technology includes the following steps:

[0016] (1) Install the light incident window and the light exit window on the light transmission holes of the device body one and the device body two, respectively;

[0017] (2) Install the fluid input pipe, fluid output pipe, electrode one and electrode two into the corresponding grooves respectively, and fix device body one and device body two with bolts and nuts;

[0018] (3) Set the position and distance of electrode one and electrode two, and connect them to the voltage source respectively; once the relative distance between the bottom surfaces of the two electrodes is determined, the shape of the electric field is determined; the two electrodes slide with a fixed relative distance, which can adjust the position of the test object in the electric field. This adjustment is particularly important for non-uniform electric fields.

[0019] (4) Connect the fluid inlet pipe and the fluid outlet pipe to the fluid storage tank, and set the power source in the fluid inlet pipe;

[0020] (5) Install the test device on the synchrotron radiation beamline so that the light incident window is perpendicular to the incident light field;

[0021] (6) Start the power source to input the fluid into the fluid input pipe and set the voltage source voltage;

[0022] (7) To begin the test, a synchrotron radiation light field is introduced, and signals of the incident and outgoing light are collected to obtain X-ray scattering (including small-angle X-ray scattering and wide-angle X-ray scattering) and X-ray absorption spectrum data. For example, Figure 4This is a set of two-dimensional small-angle X-ray scattering patterns obtained using the present invention. This set of data reflects the evolution of Bi2Fe4O9 nanosheets flowing in silicone oil from isotropic uniform orientation to orientation along the electric field direction as the applied electric field gradually increases. Figure 5 This is a set of two-dimensional wide-angle X-ray scattering patterns obtained using the present invention. This set of data shows that, under a fixed electric field, the wide-angle X-ray scattering signal of Bi2Fe4O9 nanosheets in flowing silicone oil gradually increases with the increase of concentration. Figure 6 This is a set of one-dimensional wide-angle X-ray scattering spectra obtained using the present invention. This set of spectra reflects the evolution process of the increasing number of Bi2Fe4O9 nanosheets flowing in silicone oil as the external electric field gradually increases. Figure 7 This is a set of X-ray absorption spectra obtained using the present invention. This set of spectra reflects the evolution of the Bi atom nearest neighbor structure of Bi2Fe4O9 nanosheets flowing in silicone oil as the external electric field gradually increases.

[0023] Different fluid concentrations and flow velocities determine the sample's flow field; different voltage magnitudes and electrode distances determine the applied electric field. Once the flow field and electric field are determined, the sample's "state" is defined. At this point, the incident X-rays will produce various signals, and different receiving devices can be used to acquire corresponding data—all of which reflect the sample's "state" at that moment. By adjusting the flow field and electric field, samples in different "states" can be obtained, and the various signals generated by X-rays will change accordingly. Therefore, this invention allows for the acquisition of data under different "states."

[0024] The present invention has the following advantages over the prior art:

[0025] (1) The test device of the present invention can realize in-situ monitoring of the aggregation behavior of dielectric particles in complex fluids under the influence of flow field and applied electric field using synchrotron radiation.

[0026] (2) During the process of dielectric polarization accumulation, it can simultaneously capture multiple signals including but not limited to X-ray transmission signals, fluorescence signals, diffraction signals and scattering signals.

[0027] (3) The present invention can change the flow field in the test device by adjusting the speed of fluid flow or the concentration of input fluid.

[0028] (4) The present invention can change the electric field distribution in the test area by changing the voltage applied to the electrodes or adjusting the distance between the electrodes.

[0029] (5) The test device of the present invention has a simple structure, is easy to assemble, and is easy to clean and reuse.

[0030] (6) The materials used to manufacture the various components of the test device of the present invention are common and readily available, which is convenient for widespread use and is of great significance for helping more researchers to engage in the study of the aggregation behavior of nanoparticles in complex flowing fluids under an electric field. Attached Figure Description

[0031] Figure 1 This is a perspective view of a testing device with perpendicular optical, electrical, and fluid fields according to an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of a testing device with perpendicular optical, electrical, and fluid fields according to an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram illustrating the working principle of a testing device with perpendicular optical, electrical, and fluid fields according to an embodiment of the present invention.

[0034] Figure 4 The two-dimensional small-angle X-ray scattering pattern in the embodiments of the present invention reflects the orientation behavior of Bi2Fe4O9 nanosheets in flowing silicone oil under the action of an external electric field;

[0035] (a) Two-dimensional small-angle X-ray scattering pattern acquired when an electric field strength of 0 V / mm is applied.

[0036] (b) Two-dimensional small-angle X-ray scattering pattern acquired when an electric field strength of 10 V / mm is applied.

[0037] (c) Two-dimensional small-angle X-ray scattering pattern acquired when an electric field strength of 20 V / mm is applied.

[0038] (d) Two-dimensional small-angle X-ray scattering pattern acquired when an electric field strength of 40 V / mm is applied.

[0039] (e) Two-dimensional small-angle X-ray scattering pattern acquired when an electric field strength of 60 V / mm is applied.

[0040] (f) Two-dimensional small-angle X-ray scattering pattern acquired when an electric field strength of 120 V / mm is applied.

[0041] Figure 5 The two-dimensional wide-angle X-ray scattering pattern in the embodiments of the present invention reflects the aggregation behavior of Bi2Fe4O9 nanosheets in flowing silicone oil under the action of an external electric field;

[0042] (a) Two-dimensional small-angle X-ray scattering pattern collected when 0 vol% Bi2Fe4O9 nanosheets are dispersed in silicone oil.

[0043] (b) Two-dimensional small-angle X-ray scattering pattern collected when 0.46 vol% of Bi2Fe4O9 nanosheets are dispersed in silicone oil.

[0044] (c) Two-dimensional small-angle X-ray scattering pattern collected when 4.12 vol% of Bi2Fe4O9 nanosheets are dispersed in silicone oil.

[0045] Figure 6 The one-dimensional wide-angle X-ray scattering spectrum involved in the embodiments of the present invention reflects the aggregation behavior of Bi2Fe4O9 nanosheets in flowing silicone oil under the action of an external electric field.

[0046] Figure 7 The X-ray absorption spectrum shown in this embodiment of the invention reflects the Bi atom nearest-neighbor structure of Bi2Fe4O9 nanosheets in flowing silicone oil under the action of an external electric field.

[0047] Reference numerals in the attached figures: 1-Device body one, 2-Device body two, 3-Light incident window, 4-Light exit window, 5-Fluid input pipe, 6-Fluid output pipe, 7-Electrode one, 8-Electrode two, 9-Bolt, 10-Nut. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0049] like Figures 1-3 The test device shown for the perpendicular three fields of light, electricity, and fluid for synchrotron radiation scattering and absorption technology includes a device body 1, a device body 2, a light incident window 3, a light exit window 4, a fluid input pipe 5, a fluid output pipe 6, an electrode 7, an electrode 8, a bolt 9, and a nut 10. The device body 1 and device body 2 are arranged opposite each other. Both device body 1 and device body 2 have light-transmitting holes that extend along their axial direction as channels for synchrotron radiation light to enter and exit. The light incident window 3 and the light exit window 4 respectively cover the light-transmitting holes of device body 1 and device body 2. The surfaces of device body 1 and device body 2 that are in contact with each other have two sets of opposite grooves that serve as channels for fluid entry and exit and limits for electrode sliding, respectively. The electrode 7 and electrode 8 are disposed in the aforementioned set of opposite grooves and connected to a voltage source. The fluid input pipe 5 and the fluid output pipe 6 are disposed in the aforementioned other set of opposite grooves and connected to a fluid reservoir.

[0050] The light incident window 3 and light exit window 4 are made of materials with low X-ray absorption rates, such as sapphire, silicon nitride glass, Kapton film, Mylar polyester film, and PET film. The device body 1, device body 2, fluid input pipe 5, fluid output pipe 6, bolts 9, and nuts 10 are all made of insulating materials such as PTFE and PEEK. The electrodes 7 and 8 are made of metals with good conductivity, such as copper, aluminum, and silver. The light-transmitting holes of device body 1 and device body 2 have a large-angle chamfer on the side not in contact with the fluid to facilitate the acquisition of emitted light signals. The light incident window 3 and light exit window 4 are covered over the light-transmitting holes of device body 1 and device body 2 by means including but not limited to flange fixing, sealing ring compression, and adhesive bonding to ensure the sealing of the test device. The bottom surfaces of electrodes 1 and 2 face each other and are smooth and flat to ensure that the electric field applied to the incident light irradiation area is uniform. Electrode 7 and electrode 8 are mounted on device body 1 and device body 2 via methods including but not limited to flange fixing and sealing ring compression, allowing them to slide along grooves on device body 1 and device body 2 and ensuring the sealing of the test device. The inner and outer diameters of the fluid input pipe 5 and the fluid output pipe 6 are identical, and their axes coincide, ensuring a uniform flow field of fluid within the test device. The fluid input pipe 5 and the fluid output pipe 6 are fixed to device body 1 and device body 2 via methods including but not limited to flange fixing, sealing ring compression, and adhesive bonding to ensure the sealing of the test device. The axes of the light-transmitting holes of device body 1 and device body 2, the axes of electrodes 7 and 8, and the axes of the fluid input pipe 5 and the fluid output pipe 6 are perpendicular to each other.

[0051] A test method for a test device with perpendicular optical, electrical, and fluid fields suitable for synchrotron radiation scattering and absorption technology includes the following steps:

[0052] (1) Install the light incident window 3 and the light exit window 4 on the light transmission holes of the device body 1 and the device body 2, respectively;

[0053] (2) Install the fluid input pipe 5, the fluid output pipe 6, the first electrode 7 and the second electrode 8 into the corresponding grooves respectively, and fix the device body 1 and the device body 2 with bolts 9 and nuts 10.

[0054] (3) Set the position and distance of electrode 7 and electrode 8, and connect them to the voltage source respectively; once the relative distance between the bottom surfaces of the two electrodes is determined, the shape of the electric field is determined; the two electrodes slide with a fixed relative distance, which can adjust the position of the test object in the electric field. This adjustment is particularly important for non-uniform electric fields.

[0055] (4) Connect the fluid inlet pipe 5 and the fluid outlet pipe 6 to the fluid storage tank, and install the peristaltic pump in the fluid inlet pipe 5;

[0056] (5) Install the test device on the synchrotron radiation line station so that the light incident window 3 is perpendicular to the incident light field;

[0057] (6) Start the peristaltic pump to input fluid into the test device and set the voltage source voltage;

[0058] (7) Start the test, introduce the synchrotron radiation light field, and collect data including but not limited to X-ray absorption spectrum, X-ray fluorescence spectrum, X-ray diffraction spectrum, and X-ray small angle scattering spectrum.

[0059] The fluid input pipe 5 and the fluid output pipe 6 can be a complete fluid transmission pipe connected to the fluid storage device to transmit the fluid to be measured, thereby avoiding fluid leakage in the pipe. In this case, the light incident window and the light exit window can be omitted.

[0060] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any other changes or equivalent substitutions made without departing from the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical testing device for optical / electrical / fluid fields of X-ray scattering and absorption, characterized in that, Includes device body one, device body two, fluid transmission pipe, electrode one, and electrode two; The device body one and the device body two are arranged opposite to each other; each of the contact surfaces of the device body one and the device body two is provided with two sets of mutually perpendicular grooves; when the device body one and the device body two are assembled together, one set of grooves opposite to each other forms a first channel for fluid inlet and outlet; the other set of grooves opposite to each other forms a second channel for limiting the first electrode and the second electrode; the fluid transmission pipe is inserted into the first channel, and the first electrode and the second electrode are respectively inserted into the second channel from both ends of the second channel; the area where the first channel and the second channel intersect perpendicularly is denoted as region O; The fluid transfer pipe is used to connect to the fluid storage tank for transferring the fluid to be tested; Electrode 1 and Electrode 2 are respectively connected to a voltage source and are used to apply an electric field perpendicular to the fluid flow direction to the fluid flowing through region O in the fluid transmission pipe. The device body one and the device body two are respectively provided with a light-transmitting hole. When the device body one and the device body two are assembled together, the two light-transmitting holes form a third channel with respect to each other, which is used to transmit synchrotron radiation light to apply a light field perpendicular to the fluid flow direction and the electric field to the fluid flowing through the region O. The third channel is perpendicular to the first channel and the second channel through the region O respectively. The first electrode and the second electrode are respectively disposed on the first device body and the second device body by means including but not limited to flange fixing and sealing ring compression, so that the first electrode and the second electrode can slide in the second channel and prevent fluid leakage; The second channel is used to restrict the first electrode and the second electrode from sliding on the same straight line; the bottom surfaces of the first electrode and the second electrode have the same shape or are mirror images of each other, in order to provide a uniform electric field; The first and second electrodes are engraved with scales to control the depth of insertion into the second channel.

2. A vertical testing device for optical / electrical / fluid fields of X-ray scattering and absorption, characterized in that, It includes device body one, device body two, light incident window, light exit window, fluid input channel, fluid output channel, electrode one, and electrode two; The device body one and the device body two are disposed opposite to each other; each of the contact surfaces of the device body one and the device body two is provided with two sets of mutually perpendicular grooves; when the device body one and the device body two are assembled together, one set of grooves opposite to each other forms a first channel for fluid inlet and outlet; the other set of grooves opposite to each other forms a second channel for limiting the first electrode and the second electrode; the fluid inlet pipe and the fluid outlet pipe are respectively inserted into the first channel from both ends of the first channel, and the first electrode and the second electrode are respectively inserted into the second channel from both ends of the second channel; the area where the first channel and the second channel intersect perpendicularly is denoted as region O; The fluid input pipe and fluid output pipe are used to connect to the fluid storage tank. The fluid in the fluid storage tank enters area O through the fluid input pipe and then flows back to the fluid storage tank through the fluid output pipe. Electrode one and electrode two are respectively connected to a voltage source to apply an electric field perpendicular to the fluid flow direction to the fluid flowing through region O and to prevent the fluid in region O from flowing out through the second channel; the fluid is an insulator. Each of the device body one and the device body two is provided with a light-transmitting hole. When the device body one and the device body two are assembled together, the two light-transmitting holes form a third channel, which is used to transmit synchrotron radiation light to apply a light field perpendicular to the fluid flow direction and the electric field to the fluid flowing through region O. The third channel is perpendicular to the first channel and the second channel through region O. The light incident window and the light exit window cover the two light-transmitting holes respectively, which are used to prevent the fluid in region O from flowing out through the third channel. The first electrode and the second electrode are respectively disposed on the first device body and the second device body by means including but not limited to flange fixing and sealing ring compression, so that the first electrode and the second electrode can slide in the second channel and prevent fluid leakage; The second channel is used to restrict the first electrode and the second electrode from sliding on the same straight line; the bottom surfaces of the first electrode and the second electrode have the same shape or are mirror images of each other, in order to provide a uniform electric field; The first and second electrodes are engraved with scales to control the depth of insertion into the second channel.

3. The device according to claim 2, characterized in that, The light incident window and the light exit window respectively cover one end of the two light-transmitting holes near the region O.

4. The device according to claim 2, characterized in that, The fluid input pipe and the fluid output pipe have the same inner and outer diameters and coincident axes.

5. The device according to claim 2, characterized in that, The fluid input pipe and fluid output pipe are respectively fixed to the assembly of the device body one and the device body two by means including but not limited to flange fixing, sealing ring compression, and adhesive bonding to prevent fluid leakage.

6. A testing method based on the vertical testing equipment for X-ray scattering and absorption optical / electrical / fluid fields as described in claim 1 or 2, comprising the following steps: 1) Set the positions and distances of electrode one and electrode two, and connect them to the voltage source respectively; 2) Connect the fluid inlet and fluid outlet pipes to the fluid storage tank, and place the power source on the fluid inlet pipe; 3) The optical / electric / fluid field vertical testing equipment for X-ray scattering absorption as described in claim 1 or 2 is installed on a synchrotron radiation beamline to vertically incident the incident light field into the third channel; 4) Start the power source to input fluid into the fluid input pipe, and set the voltage source voltage; 5) At the start of the test, synchrotron radiation is incident perpendicularly into the third channel to irradiate the fluid, and an electric field is applied to the fluid. Then, the emitted light signal is collected to obtain X-ray scattering and absorption data.

7. The method according to claim 6, characterized in that, When adjusting the positions of electrode one and electrode two in the second channel, the relative distance between the bottom surfaces of electrode one and electrode two remains unchanged; the X-ray scattering absorption data includes, but is not limited to, small-angle X-ray scattering, wide-angle X-ray scattering, X-ray absorption spectrum or X-ray fluorescence spectrum.

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