CN219418647U - Electromagnetic field device for on-line scanning of AFM sample and detection system - Google Patents
Electromagnetic field device for on-line scanning of AFM sample and detection system Download PDFInfo
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- CN219418647U CN219418647U CN202320739314.8U CN202320739314U CN219418647U CN 219418647 U CN219418647 U CN 219418647U CN 202320739314 U CN202320739314 U CN 202320739314U CN 219418647 U CN219418647 U CN 219418647U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The utility model discloses an electromagnetic field device for on-line scanning of an AFM sample, which comprises: the electromagnetic field generating assembly comprises a supporting substrate, one side of the supporting substrate is provided with a wiring terminal box, and the other side of the supporting substrate is provided with an iron core; the two iron cores are symmetrically arranged on the supporting substrate respectively, each iron core comprises an electrifying section and a magnetic field section, an insulating framework is arranged on each electrifying section, coils are wound on the surfaces of the insulating frameworks, and the coils are electrically connected with the wiring terminal box; the magnetic field section is provided with magnetic field generating surfaces, and the magnetic field generating surfaces of the two iron cores are parallel to each other and form a magnetic field space; when the wiring terminal box is electrified, coils on the two iron core electrified sections are electrified, and meanwhile, a magnetic field space between the magnetic field generating surfaces of the two iron cores generates a magnetic field, and when the current changes, the magnetic field changes. The utility model also relates to a detection system for on-line scanning of the AFM sample.
Description
Technical Field
The utility model relates to the technical field of microscope detection, in particular to an electromagnetic field device and a detection system for on-line scanning of an AFM sample
Background
The AFM atomic force microscope is a novel instrument with atomic level high resolution, is widely applied to the fields of research experiments of various nano related disciplines and the like at present, and becomes a basic tool for nano scientific research, and is a novel instrument with atomic level high resolution.
In the AFM atomic force microscope detection process, tunnel effect in quantum theory is utilized, when the distance between a sample and a needle point is very close, electrons can flow to the other electrode through a potential barrier between the two electrodes under the action of an externally applied electric field, tunnel current intensity is very sensitive to the distance between the needle point and the surface of the sample, and tunnel current is increased when the distance is smaller, so that the electronic feedback circuit is utilized to control the constancy of the tunnel current, and control the scanning of the needle point on the surface of the sample, the fluctuation of the surface of the sample is reflected by the change of the height of the probe, and the sample is detected.
Along with the increasing requirements of modern scientific research on AFM sample testing, some adjustments are often made to the external environments such as temperature, electricity, magnetism, force, light and the like during sample testing to observe the microstructure and microscopic performance of the sample under different environments, so as to obtain more data and provide more convenience and possibility for scientific research.
However, most electromagnets used in the AFM atomic force microscope in the prior art are custom-made special-shaped electromagnets, and the special external dimensions are designed according to the use conditions and magnetic field requirements of users, so that the electromagnetic force of the electromagnets needs to be changed in the sample testing process, and the electromagnets with different types need to be replaced, so that the AFM atomic force microscope is complex in work and inconvenient to detach and assemble.
So an electromagnetic field device and a detection system for on-line scanning of AFM samples are now proposed to solve the above problems.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides an electromagnetic field device for on-line scanning of an AFM sample.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an electromagnetic field device for on-line scanning of an AFM sample, comprising: the electromagnetic field generating assembly comprises a supporting substrate, one side of the supporting substrate is provided with a wiring terminal box, and the other side of the supporting substrate is provided with an iron core;
the two iron cores are symmetrically arranged on the supporting substrate respectively, each iron core comprises an electrifying section and a magnetic field section, an insulating framework is arranged on each electrifying section, a coil is wound on the surface of each insulating framework, and the coils are electrically connected with the wiring terminal box;
the magnetic field section is provided with magnetic field generating surfaces, and the magnetic field generating surfaces of the two iron cores are mutually parallel and form a magnetic field space;
when the connecting terminal box is electrified, coils on the two iron core electrifying sections are electrified, and meanwhile, a magnetic field is generated in a magnetic field space between the two iron core magnetic field generating surfaces, and when the current is changed, the magnetic field is changed.
In a preferred embodiment of the present utility model, the magnetic field generating surface has a planar structure and a width not less than 1/4 of the diameter of the power-on section.
In a preferred embodiment of the present utility model, the magnetic field generating surface is disposed at a free end of the magnetic field section of the iron core, and a protrusion is disposed on the magnetic field generating surface.
In a preferred embodiment of the present utility model, insulating plates are disposed at two ends of the insulating frame, and the width of the insulating plates is greater than the width of the insulating frame body.
In a preferred embodiment of the present utility model, two wire connecting holes are provided on the wire connecting terminal box, and the two wire connecting holes are electrically connected with the coils on the two insulating frameworks respectively.
In a preferred embodiment of the present utility model, a detection system for on-line scanning of an AFM sample is further provided, including the electromagnetic field device and the detection device for on-line scanning of an AFM sample;
the detection device comprises a base, a probe and a scanning tube, and the electromagnetic field generating assembly is arranged on the base;
the scanning tube is arranged between the magnetic field generation surfaces of the two iron core magnetic field sections, a sample is placed on the scanning tube, and the probe is arranged at the upper end of the scanning tube and is in contact with the surface of the sample;
the magnetic field generated by the parallel space between the magnetic field generating surfaces of the iron core can provide a magnetic field environment for the scanning tube and the probe.
In a preferred embodiment of the present utility model, the supporting substrate and the iron core energizing section are both disposed on the base, and the terminal box and the iron core magnetic field section are both located outside the base.
In a preferred embodiment of the utility model, the front end of the base is provided with a front end clamping groove, the rear end of the base is provided with a rear end clamping groove, the front end clamping groove is matched with the top end of the insulating framework, the top end of the insulating framework can be clamped in the front end clamping groove, the rear end clamping groove is matched with the supporting substrate, and the supporting substrate can be clamped in the rear end clamping groove.
In a preferred embodiment of the present utility model, the support substrate is provided with a substrate fixing hole, the base is provided with a rear connecting hole, a fixing member is disposed in the rear connecting hole, the substrate fixing hole and the rear connecting hole are disposed on the same horizontal line, and the fixing member can extend from the rear connecting hole into the substrate fixing hole, so as to fix the support substrate on the base.
In a preferred embodiment of the present utility model, an iron core fixing hole is provided on the iron core, the iron core fixing hole is provided on the magnetic field section, a front connecting hole is provided on the base, a fixing member is provided in the front connecting hole, the iron core fixing hole and the front connecting hole are provided on the same horizontal line, and the fixing member can extend from the front connecting hole into the iron core fixing hole, so as to fix the iron core on the base.
The utility model solves the defects existing in the background technology, and has the following beneficial effects:
(1) The electromagnet arranged on the detection device in the prior art is designed into an adjustable mode, specifically, the wiring terminal box is arranged at one end of the substrate, the iron core is arranged at the other end of the substrate, the insulating framework is arranged on the energizing section of the iron core, the coil is wound on the insulating framework and is electrically connected with the wiring terminal box, when the energizing section is energized, a magnetic field is generated in a magnetic field space between the magnetic field generation surfaces of the iron core, if the magnetic field environment is required to be changed, the magnetic field intensity conversion can be directly carried out by changing the current, and the method is simple, convenient and convenient to control;
meanwhile, the magnetic field generating surface is designed into a planar structure, a space region formed in the planar structure can generate a stable and uniform magnetic field, the width is not smaller than 1/4 of the diameter of the electrified section, and the magnetic field strength is ensured.
(2) According to the on-line scanning detection device for the AFM sample, the electromagnetic field device, the probe and the scanning tube are integrated into a whole, so that the on-line scanning detection device can be directly used as a whole for adjusting factors such as test requirements, test modes, test environments and the like in the process of testing the sample, and is more convenient. (3) The detection device comprises a base, wherein a clamping groove is formed in the base, the insulating framework and the supporting substrate are clamped in the clamping groove, and meanwhile, the supporting substrate and the iron core are fixed on the base through fixing pieces, so that the electromagnetic field device can be stably fixed on the base, and meanwhile, the electromagnetic field generation assembly is easy to install, operate, disassemble and maintain.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a perspective view of an electromagnetic field device according to a preferred embodiment of the present utility model;
FIG. 2 is a perspective view of the electromagnetic field generating assembly of the preferred embodiment of the present utility model;
FIG. 3 is another perspective view of the electromagnetic-field generating assembly of the preferred embodiment of the present utility model;
FIG. 4 is another perspective view of the electromagnetic field device of the preferred embodiment of the present utility model;
FIG. 5 is a perspective view of the detection system of the preferred embodiment of the present utility model;
fig. 6 is a schematic diagram of the electromagnetic field operation of the detection system of the preferred embodiment of the present utility model when in operation.
In the figure: 1. an electromagnetic field generating assembly; 10. a support substrate; 100. a substrate fixing hole;
11. a terminal block; 110. a wiring hole;
12. an iron core; 120. a power-on section; 121. a magnetic field section; 1210. a magnetic field generating surface; 12100. a magnetic field space; 1212. an iron core fixing hole;
13. an insulating skeleton; 130. a coil; 131. an insulating plate;
2. a base; 20. a front end clamping groove; 21. a rear end clamping groove; 22. a rear connection hole; 23. a front connection hole;
3. a probe; 4. a scanning tube; 5. and (3) a sample.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or be present as another intermediate element through which the element is fixed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 4, an electromagnetic field device for on-line scanning of an AFM sample, comprising: the electromagnetic field generating assembly 1, the electromagnetic field generating assembly 1 comprises a supporting substrate 10, a wiring terminal box 11 is arranged on one side of the supporting substrate 10, and an iron core 12 is arranged on the other side of the supporting substrate 10;
the two iron cores 12 are symmetrically arranged on the supporting substrate 10 respectively, the iron cores 12 comprise an electrifying section 120 and a magnetic field section 121, an insulating framework 13 is arranged on the electrifying section 120, a coil 130 is wound on the surface of the insulating framework 13, and the coil 130 is electrically connected with the wiring terminal box 11;
the magnetic field segment 121 is provided with a magnetic field generating surface 1210, and the magnetic field generating surfaces 1210 of the two cores are parallel to each other and form a magnetic field space 12100;
when the terminal box 11 is electrified, the coils 130 on the two iron core electrifying sections 120 are electrified, and meanwhile, the magnetic field space 12100 between the two iron core magnetic field generating surfaces 1210 generates a magnetic field, when the current changes, the magnetic field changes, and the magnetic field is changed directly by changing the current, so that the control is simple, convenient and convenient.
In a preferred embodiment of the present utility model, the magnetic field generating surface 1210 has a planar structure, and the width is not less than 1/4 of the diameter of the power-on section 120, and the space region formed in the planar structure can generate a stable and uniform magnetic field, and the width is not less than 1/4 of the diameter of the power-on section 120, thereby ensuring the magnetic field strength.
In a preferred embodiment of the present utility model, a magnetic field generating surface 1210 is disposed at the free end of the magnetic field section of the iron core, and a protrusion is disposed on the magnetic field generating surface 1210, so that the sample 5 is always located in the magnetic field space 12100.
In a preferred embodiment of the present utility model, insulating plates 131 are disposed at both ends of the insulating frame 13, and the width of the insulating plates 131 is larger than the width of the insulating frame 13, so as to isolate the power-on coil 130 from both ends and prevent the occurrence of leakage hazard.
In a preferred embodiment of the present utility model, two wiring holes 110 are provided on the terminal block 11, and the two wiring holes 110 are electrically connected to the coils 130 on the two insulating bobbins 13, respectively.
As shown in fig. 5-6, a detection system for on-line scanning of an AFM sample comprises the electromagnetic field device and the detection device for on-line scanning of the AFM sample;
the detection device comprises a base 2, a probe 3 and a scanning tube 4, and the electromagnetic field generating assembly 1 is arranged on the base 2;
the scanning tube 4 is arranged between the magnetic field generating surfaces 1210 of the two iron core magnetic field sections 121, the sample 5 is placed above the scanning tube 4, the probe 3 is arranged at the upper end of the scanning tube 4 and is in surface contact with the sample 5, the magnetic field generated by the parallel space between the iron core magnetic field generating surfaces 1210 can provide a magnetic field environment for the scanning tube 4 and the probe 5, the electromagnetic field device, the probe 3 and the scanning tube 4 are integrated into a whole, and when some adjustment on factors such as test requirements, test modes, test environments and the like is needed in the process of testing the sample 5, the sample can be directly regulated as a whole, and the sample is more convenient.
In a preferred embodiment of the present utility model, the supporting substrate 10 and the core energizing section 120 are both disposed on the base 2, and the terminal box 11 and the core magnetic field section 121 are both disposed outside the base 2.
As shown in fig. 4, the front end of the base 2 is provided with a front end clamping groove 20, the rear end of the base 2 is provided with a rear end clamping groove 21, the front end clamping groove 20 is matched with the top end of the insulating framework 13 in size, the top end of the insulating framework 13 can be clamped in the front end clamping groove 20, the rear end clamping groove 21 is matched with the supporting base 10, the supporting base 10 can be clamped in the rear end clamping groove 21, the supporting base 10 is provided with a base fixing hole 100, the base 2 is provided with a rear connecting hole 22, the rear connecting hole 22 is internally provided with a fixing piece, the base fixing hole 100 and the rear connecting hole 22 are arranged on the same horizontal line, the fixing piece can be extended from the rear connecting hole 22 to the base fixing hole 100, so that the supporting base 10 is fixed on the base 2, an iron core fixing hole 1212 is arranged on the iron core, the iron core fixing hole 1212 is arranged on the magnetic field section 121, the base 2 is provided with a front connecting hole 23, the front connecting hole 23 is internally provided with a fixing piece, the iron core fixing hole 1212 and the front connecting hole 23 are arranged on the same horizontal line, and the fixing piece can be extended from the front connecting hole 1212 to the iron core fixing hole 12 on the base 2.
Set up the draw-in groove on base 2, with insulating skeleton 13 and supporting baseplate 10 joint in the draw-in groove, fix supporting baseplate 10 and iron core 12 on base 2 through the mounting simultaneously, when having guaranteed that electromagnetic field device can be stabilized fixed on base 2, still easily electromagnetic field device's installation operation and dismantlement maintenance.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present utility model, which are equivalent to the above embodiments according to the essential technology of the present utility model, and these are all included in the protection scope of the present utility model.
Claims (10)
1. An electromagnetic field device for on-line scanning of an AFM sample, comprising: an electromagnetic field generating assembly, characterized in that,
the electromagnetic field generating assembly comprises a supporting substrate, wherein a wiring terminal box is arranged on one side of the supporting substrate, and an iron core is arranged on the other side of the supporting substrate;
the two iron cores are symmetrically arranged on the supporting substrate respectively, each iron core comprises an electrifying section and a magnetic field section, an insulating framework is arranged on each electrifying section, a coil is wound on the surface of each insulating framework, and the coils are electrically connected with the wiring terminal box;
the magnetic field section is provided with magnetic field generating surfaces, and the magnetic field generating surfaces of the two iron cores are mutually parallel and form a magnetic field space;
when the connecting terminal box is electrified, coils on the two iron core electrifying sections are electrified, and meanwhile, a magnetic field is generated in a magnetic field space between the two iron core magnetic field generating surfaces, and when the current is changed, the magnetic field is changed.
2. An electromagnetic field device for on-line scanning of AFM samples as claimed in claim 1, wherein: the magnetic field generating surface is of a planar structure, and the width is not less than 1/4 of the diameter of the electrified section.
3. An electromagnetic field device for on-line scanning of AFM samples as claimed in claim 1, wherein: the magnetic field generating surface is arranged at the free end of the magnetic field section of the iron core, and a bulge is arranged on the magnetic field generating surface.
4. An electromagnetic field device for on-line scanning of AFM samples as claimed in claim 1, wherein: insulating plates are arranged at two ends of the insulating framework, and the width of each insulating plate is larger than that of the insulating framework body.
5. An electromagnetic field device for on-line scanning of AFM samples as claimed in claim 1, wherein: two wiring holes are formed in the wiring terminal box and are respectively and electrically connected with coils on the two insulating frameworks.
6. A detection system for on-line scanning of AFM samples, characterized by: an electromagnetic field device and a detection device for on-line scanning of an AFM sample according to any one of claims 1-5;
the detection device comprises a base, a probe and a scanning tube, and the electromagnetic field generating assembly is arranged on the base;
the scanning tube is arranged between the magnetic field generation surfaces of the two iron core magnetic field sections, a sample is placed on the scanning tube, and the probe is arranged at the upper end of the scanning tube and is in contact with the surface of the sample;
the magnetic field generated by the parallel space between the magnetic field generating surfaces of the iron core can provide a magnetic field environment for the scanning tube and the probe.
7. The detection system for on-line scanning of AFM samples of claim 6, wherein: the supporting substrate and the iron core energizing section are arranged on the base, and the wiring terminal box and the iron core magnetic field section are positioned outside the base.
8. The detection system for on-line scanning of AFM samples of claim 6, wherein: the base front end is provided with the front end draw-in groove, the base rear end is provided with the rear end draw-in groove, the front end draw-in groove with insulating skeleton top size looks adaptation, insulating skeleton top can the joint be in the front end draw-in groove, the rear end draw-in groove with support base plate looks adaptation, support base plate can the joint be in the rear end draw-in groove.
9. The detection system for on-line scanning of AFM samples of claim 6, wherein: the support base plate is provided with a base plate fixing hole, the base is provided with a rear connecting hole, a fixing piece is arranged in the rear connecting hole, the base plate fixing hole and the rear connecting hole are arranged on the same horizontal line, and the fixing piece can extend from the rear connecting hole to the base plate fixing hole, so that the support base plate is fixed on the base.
10. The detection system for on-line scanning of AFM samples of claim 6, wherein: the magnetic field device comprises a base, and is characterized in that an iron core fixing hole is formed in the iron core, the iron core fixing hole is formed in the magnetic field section, a front connecting hole is formed in the base, a fixing piece is arranged in the front connecting hole, the iron core fixing hole and the front connecting hole are formed in the same horizontal line, and the fixing piece can extend from the front connecting hole to the iron core fixing hole, so that the iron core is fixed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320739314.8U CN219418647U (en) | 2023-04-06 | 2023-04-06 | Electromagnetic field device for on-line scanning of AFM sample and detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320739314.8U CN219418647U (en) | 2023-04-06 | 2023-04-06 | Electromagnetic field device for on-line scanning of AFM sample and detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219418647U true CN219418647U (en) | 2023-07-25 |
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ID=87240347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320739314.8U Active CN219418647U (en) | 2023-04-06 | 2023-04-06 | Electromagnetic field device for on-line scanning of AFM sample and detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219418647U (en) |
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2023
- 2023-04-06 CN CN202320739314.8U patent/CN219418647U/en active Active
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