Buckle type quick-connection in-situ liquid sample chamber

Abstract

The utility model relates to the technical field of microscope observation, and discloses a buckle type quick-connection in-situ liquid sample chamber which comprises a base and a cover plate arranged on the base in a covering mode, the cover plate is matched with a buckle plate through a clamping groove to be buckled with the base, and a liquid sample is sealed and packaged between the cover plate and the base. According to the in-situ liquid sample chamber, the clamping groove type design is utilized, the buckling plate is inserted into the clamping groove, liquid samples between the base and the cover plate are sealed rapidly, accurately and safely, then sealing of the in-situ liquid sample chamber can be completed within dozens of seconds, and the loading efficiency of the liquid samples can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of microscope observation, in particular to a snap-on type quick-connect in-situ liquid sample chamber. Background Art

[0002] The transmission electron microscope collects the transmitted electrons generated after the electron beam interacts with the material to obtain images that reflect the internal structure of the material. According to different shooting methods, it can be divided into diffraction images and contrast images. It has achieved many results in the field of nanomaterial research. However, in order to avoid the scattering effect of gas molecules on the electron beam, a high vacuum must be maintained in the chamber of the electron microscope. As a result, although the transmission electron microscope has many applications in the in-situ observation of solid materials, the in-situ observation of liquid materials has always been limited. The in-situ liquid sample chamber is sealed with a window, which allows the electron beam to pass through while ensuring that the liquid does not leak. It is an important device for realizing dynamic in-situ electron microscopy observation of liquid samples.

[0003] Traditional in-situ electron microscope liquid sample chambers are usually sealed with screws and nuts or with latches. During the sealing process, lateral shear force is inevitably generated, and the window may be broken if not handled with care, resulting in failure of loading the liquid sample. In 2003, MJ Williamson and FM Ross et al. first disclosed an in-situ liquid sample box with a resin-sealed silicon wafer as a substrate and silicon nitride as a window [MJ Williamson, et al. Dynamic microscopy of nanoscale cluster growth at the solid–liquid interface. Nat Mater 2003, 2(8):532-536.]. The in-situ liquid sample chamber disclosed above is sealed with a vacuum resin, which is not reusable and is prone to overflow of the vacuum resin during use, thereby contaminating the sample. In 2008, Ryan Franks et al. disclosed an in-situ liquid sample chamber that is sealed with O-rings and fixed with screws [Franks, R., et al. A Study of Nanomaterial Dispersion in Solution by Wet-Cell Transmission Electron Microscopy. Journal of Nanoscience and Nanotechnology 2008, 8(9): 4404-4407.]. Chen Xin et al. disclosed an ultra-thin in-situ liquid sample chamber [An ultra-thin in-situ liquid sample chamber for transmission electron microscope and its auxiliary mounting device and mounting method, ZL201510865369.3, 2016.04.13]. The above-mentioned in-situ liquid sample chamber is fixed with screws. After each use, the silicon nitride window can be replaced and it can be reused. However, the four nut fixing steps are time-consuming and the human factor is too large, which can easily cause the silicon nitride film to break or the liquid to be tested to evaporate completely during the packaging process. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a snap-on quick-connect in-situ liquid sample chamber, which solves the problem that the existing in-situ liquid sample chamber is cumbersome to assemble and disassemble again during repeated use, which is not conducive to the rapid packaging of the liquid to be tested.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A snap-on quick-connect in-situ liquid sample chamber comprises a base and a cover plate arranged on the base, wherein the cover plate is snap-fitted with the base through a snap-on plate in a snap-on slot, and a liquid sample is sealed and packaged between the cover plate and the base.

[0009] Preferably, a docking portion is provided on the base, a placement groove is provided in the middle of the docking portion, silicon nitride window plates are symmetrically arranged in the placement groove, and a liquid sample is provided between two silicon nitride window plates.

[0010] Preferably, a first sealing ring and a second sealing ring are respectively provided between the base and the cover plate, and the base and the cover plate complete the sealing of the placement groove through the first sealing ring and the second sealing ring.

[0011] Preferably, an annular notch matching the first sealing ring is provided in the placement groove and on the cover plate, and an annular notch matching the second sealing ring is provided on the base, and the diameter of the second sealing ring is greater than the diameter of the first sealing ring.

[0012] Preferably, a limiting protrusion is provided at one end of the docking portion, and the cover plate is arranged to cover the docking portion between the limiting protrusion and the base.

[0013] Preferably, a snap groove is provided on the cover plate, the snap plate is snap-fitted and arranged between the snap groove and the docking portion, and the snap plate is pressed against the end surface of the docking portion.

[0014] Preferably, the buckle plate is a U-shaped plate, and the side sliding buckle of the U-shaped plate is arranged in the buckle sliding groove.

[0015] (III) Beneficial effects

[0016] The utility model has the following beneficial effects:

[0017] The snap-on quick-connect in-situ liquid sample chamber utilizes a card slot design to insert the snap plate into the snap slot, thereby achieving a fast, accurate, and safe sealing of the liquid sample between the base and the cover plate, thereby enabling the sealing of the in-situ liquid sample chamber to be completed within tens of seconds, which is beneficial to improving the loading efficiency of the liquid sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the main view of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the AA cross-sectional structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the utility model when the components are disassembled from the first perspective;

[0022] Figure 5 This is a schematic diagram of the overall structure of the utility model from a second viewing angle when the components are disassembled.

[0023] In the figure: 1. base; 2. docking part; 3. silicon nitride window plate; 4. placement groove; 5. first sealing ring; 6. second sealing ring; 7. limiting protrusion; 8. cover plate; 9. snap-on slide groove; 10. U-shaped plate; 11. observation port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 The utility model provides a technical solution: a snap-on quick-connect in-situ liquid sample chamber, comprising a base 1 and a cover plate 8 that covers the base 1, the cover plate 8 is snap-fitted with the base 1 through a snap slot, and the liquid sample is sealed and packaged between the cover plate 8 and the base 1. The utility model utilizes a snap slot design to insert the snap plate into the snap slot to achieve a fast, accurate, and safe sealing of the liquid sample between the base 1 and the cover plate 8, thereby enabling the sealing of the in-situ liquid sample chamber to be completed within tens of seconds, which is beneficial to improving the loading efficiency of the liquid sample.

[0026] In this embodiment, a docking portion 2 is provided on the base 1 , a placement groove 4 is provided in the middle of the docking portion 2 , silicon nitride window plates 3 are symmetrically arranged in the placement groove 4 , and a liquid sample is provided between the two silicon nitride window plates 3 .

[0027] Reference Figure 3 and 4 As shown, in this embodiment, a first sealing ring 5 and a second sealing ring 6 are respectively provided between the base 1 and the cover plate 8, and the base 1 and the cover plate 8 complete the sealing of the placement groove 4 through the first sealing ring 5 and the second sealing ring 6. Through the silicon nitride window plate 3, the liquid sample can be loaded between the window plates, and then the cover plate 8 is closed and fixed at the same time by snapping, so that the cover plate 8 squeezes the first sealing ring 5 and the second sealing ring 6, thereby quickly completing the sealed packaging of the liquid sample in the silicon nitride window plate 3.

[0028] Reference Figure 4 and 5As shown, in this embodiment, an annular notch matching the first sealing ring 5 is provided in the placement groove 4 and on the cover plate 8, and an annular notch matching the second sealing ring 6 is provided on the base 1, and the diameter of the second sealing ring 6 is larger than the diameter of the first sealing ring 5. The annular notch can stabilize the limiting sealing ring, and then when the cover plate 8 is snapped and closed, the liquid sample between the silicon nitride window plate 3 can be stably sealed and packaged.

[0029] In this embodiment, a limiting protrusion 7 is provided at one end of the docking portion 2 , and a cover plate 8 is arranged to cover the docking portion 2 between the limiting protrusion 7 and the base 1 .

[0030] Reference Figure 2 and 5 As shown, in this embodiment, a snap groove 9 is provided on the cover plate 8, and the snap plate is snapped and arranged between the snap groove 9 and the docking portion 2, and the snap plate is pressed against the end surface of the docking portion 2. Through the provided snap groove 9, after the cover plate 8 is covered with the docking portion 2 on the base 1, the snap plate can be slid and snapped through the snap groove 9, so that the snap plate is pressed against the docking portion 2, so that the cover plate 8 stably presses the first sealing ring 5 and the second sealing ring 6, thereby quickly completing the sealed packaging of the liquid sample.

[0031] Reference Figure 4 and 5 As shown, in this embodiment, the snap plate adopts a U-shaped plate 10, and the side sliding snap of the U-shaped plate 10 is arranged in the snap groove 9. By adopting the U-shaped plate 10 as the snap plate, it can effectively avoid the snap plate from blocking the observation port 11 set on the base 1.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A snap-on quick-connect in-situ liquid sample chamber, comprising a base and a cover plate arranged on the base, characterized in that: The cover plate is arranged in a snap-fit ​​arrangement with the base through a snap-fitting groove and a snap-fitting plate, and a liquid sample is sealed and packaged between the cover plate and the base.

2. The snap-on quick-connect in-situ liquid sample chamber according to claim 1, characterized in that: The base is provided with a docking portion, a placement groove is provided in the middle of the docking portion, silicon nitride window plates are symmetrically arranged in the placement groove, and a liquid sample is provided between two silicon nitride window plates.

3. The snap-on quick-connect in-situ liquid sample chamber according to claim 2, characterized in that: A first sealing ring and a second sealing ring are respectively arranged between the base and the cover plate, and the base and the cover plate complete the sealing of the placement groove through the first sealing ring and the second sealing ring.

4. The snap-on quick-connect in-situ liquid sample chamber according to claim 3, characterized in that: An annular notch matching the first sealing ring is arranged in the placement groove and on the cover plate, and an annular notch matching the second sealing ring is arranged on the base, and the diameter of the second sealing ring is greater than the diameter of the first sealing ring.

5. The snap-on quick-connect in-situ liquid sample chamber according to claim 2, characterized in that: A limiting protrusion is arranged at one end of the docking portion, and the cover plate is arranged to cover the docking portion between the limiting protrusion and the base.

6. A snap-on quick-connect in-situ liquid sample chamber according to any one of claims 2 to 5, characterized in that: The cover plate is provided with a buckle slide groove, the buckle plate is buckled and arranged between the buckle slide groove and the docking portion, and the buckle plate is pressed against the end surface of the docking portion.

7. The snap-on quick-connect in-situ liquid sample chamber according to claim 6, characterized in that: The buckle plate is a U-shaped plate, and the side sliding buckles of the U-shaped plate are arranged in the buckle sliding groove.

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