In-situ liquid sample chamber

Abstract

The utility model relates to the technical field of microscope observation, and discloses an 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 clamped with the base in an extruding mode through a pressing assembly, and a liquid sample is sealed and packaged between the cover plate and the base. By arranging the pressing assembly, the cover plate and the base can be quickly extruded and clamped, so that the liquid sample between the base and the cover plate can be quickly, accurately and safely sealed, and the loading efficiency of the liquid sample can be improved. According to the utility model, the cover plate and the base are quickly pressed and mounted in an elastic buckling manner, so that a liquid sample between the base and the cover plate is quickly, accurately and safely sealed, and the loading efficiency of the liquid sample is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of microscope observation, in particular to an in-situ liquid sample chamber. Background Art

[0002] Transmission electron microscopes (TEMs) collect transmitted electrons generated by the interaction of an electron beam with a material to produce images that reveal the material's internal structure. Depending on the method used to capture these images, they can be categorized as diffraction images or contrast images. They have achieved significant success in nanomaterial research. However, to prevent scattering of the electron beam by gas molecules, a high vacuum must be maintained within the electron microscope chamber. While TEMs have numerous applications in the in situ observation of solid materials, their application has been limited to in situ observation of liquid materials. The in situ liquid sample chamber is sealed with a window, allowing the electron beam to pass while preventing liquid leakage. This is a crucial device for dynamic in situ TEM observation of liquid samples.

[0003] The in-situ liquid sample chamber disclosed in the prior art is sealed with a vacuum resin, which is not reusable and can easily cause the vacuum resin to overflow during use, contaminating the sample. Furthermore, the installation of existing detachable in-situ liquid sample chambers is prone to human error, which can easily cause the silicon nitride film to break during the packaging process or cause the liquid to evaporate completely. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present invention provides an 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] (2) Technical solution

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

[0008] An in-situ liquid sample chamber comprises a base and a cover plate arranged on the base, wherein the cover plate is squeezed and clamped with the base through a pressing assembly, and the liquid sample is sealed and packaged between the cover plate and the base.

[0009] Preferably, a covering groove is provided on the base, the cover plate is covered in the covering groove, a placement groove is provided at the bottom of the covering groove, silicon nitride window plates are symmetrically stacked up and down in the placement groove, and the liquid sample is provided between the silicon nitride window plates.

[0010] Preferably, a first sealing ring and a second sealing ring are respectively provided between the cover plate and the placement groove, and between the cover plate and the covering groove. When the cover plate and the covering groove are squeezed and engaged by the clamping assembly, the silicon nitride window plate is sealed by the first sealing ring and the second sealing ring.

[0011] Preferably, the clamping assembly includes a locking piece and an elastic protrusion arranged at one end of the locking piece, and a snap groove is provided on the base. The maximum diameter of the elastic protrusion is larger than the snap groove. When the cover plate and the base are in an extruded and engaged state, the locking piece drives the elastic protrusion through the countersunk hole arranged on the cover plate, and the elastic snap is in the snap groove.

[0012] Preferably, a hollow cavity is provided on the locking member, and a limiting groove matching the elastic protrusion is provided at the lower part of the buckle groove.

[0013] (3) Beneficial effects

[0014] The utility model has the following beneficial effects:

[0015] The in-situ liquid sample chamber can quickly squeeze the cover plate and the base together through the provided compression assembly, thereby quickly, accurately and safely sealing the liquid sample between the base and the cover plate, thereby completing the sealing of the in-situ liquid sample chamber within tens of seconds, which is beneficial to improving the loading efficiency of the liquid sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the overall components of the utility model;

[0019] Figure 4 This is a schematic diagram of the partially cutaway structure of the overall components of the utility model.

[0020] In the figure: 1. base; 2. cover groove; 3. placement groove; 4. silicon nitride window plate; 5. cover plate; 6. locking piece; 61. elastic protrusion; 62. hollow cavity; 7. snap groove; 71. limit groove; 8. countersunk hole; 9. first sealing ring; 10. second sealing ring; 11. observation port. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 The present invention provides a technical solution: an in-situ liquid sample chamber comprising a base 1 and a cover plate 5 disposed on the base 1. The cover plate 5 is squeezed and engaged with the base 1 via a pressing assembly, and the liquid sample is sealed and encapsulated between the cover plate 5 and the base 1. The present invention can quickly squeeze and engage the cover plate 5 with the base 1 through the pressing assembly, achieving a rapid, accurate, and secure sealing of the liquid sample between the base 1 and the cover plate 5. This allows the in-situ liquid sample chamber to be sealed within tens of seconds, thereby improving the loading efficiency of the liquid sample.

[0023] In this embodiment, a covering groove 2 is provided on the base 1, and a cover plate 5 is provided in the covering groove 2. A placement groove 3 is provided at the bottom of the covering groove 2. Silicon nitride window plates 4 are symmetrically stacked up and down in the placement groove 3, and liquid samples are provided between the silicon nitride window plates 4.

[0024] In this embodiment, a first sealing ring 9 and a second sealing ring 10 are respectively provided between the cover plate 5 and the placement groove 3, and between the cover plate 5 and the covering groove 2. When the cover plate 5 and the covering groove 2 are squeezed and clamped by the clamping assembly, the silicon nitride window plate 4 is sealed by the first sealing ring 9 and the second sealing ring 10.

[0025] Reference Figure 2-4 As shown, in this embodiment, the pressing assembly includes a locking member 6 and an elastic protrusion 61 provided at one end of the locking member 6. A snap groove 7 is provided on the base 1. The maximum diameter of the elastic protrusion 61 is larger than the snap groove 7. When the cover plate 5 and the base 1 are in a squeezed and engaged state, the locking member 6 drives the elastic protrusion 61 through the countersunk hole 8 arranged on the cover plate 5 and elastically snaps into the snap groove 7. By providing the elastic protrusion 61 and the snap groove 7, the elastic snap engagement between the elastic protrusion 61 and the snap groove 7 can be controlled, thereby causing the locking member 6 to squeeze the cover plate 5, so that the cover plate 5 is covered in the covering groove 2, and then the first sealing ring 9 and the second sealing ring 10 complete the sealed packaging of the liquid sample in the silicon nitride window plate 4. At the same time, the elastic snap engagement of the elastic protrusion 61 with the snap groove 7 can facilitate daily opening of the cover plate 5.

[0026] Reference Figure 4As shown, in this embodiment, the locking member 6 is provided with a hollow cavity 62, and the lower portion of the snap groove 7 is provided with a retaining groove 71 that matches the elastic protrusion 61. The hollow cavity 62 allows the locking member 6 to be lifted upward to remove the elastic protrusion 61 that is arranged in the retaining groove 71 when separating the locking member 6 from the cover 5, thereby facilitating the separation of the cover 5 from the base 1 during routine disassembly and assembly.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-situ liquid sample chamber comprising a base and a cover plate disposed on the base, characterized in that: The cover is squeezed and engaged with the base through a clamping assembly, and the liquid sample is sealed between the cover and the base; the clamping assembly includes a locking piece and an elastic protrusion arranged at one end of the locking piece, and a snap groove is provided on the base, and the maximum diameter of the elastic protrusion is larger than the snap groove. When the cover and the base are in an squeezed and engaged state, the locking piece drives the elastic protrusion to pass through the countersunk hole arranged on the cover, and the elastic buckle is in the snap groove.

2. The in-situ liquid sample chamber according to claim 1, characterized in that: The base is provided with a covering groove, the cover plate is covered in the covering groove, the bottom of the covering groove is provided with a placement groove, the placement groove is provided with silicon nitride window plates stacked symmetrically up and down, and the liquid sample is provided between the silicon nitride window plates.

3. The in-situ liquid sample chamber according to claim 2, characterized in that: A first sealing ring and a second sealing ring are respectively provided between the cover plate and the placement groove and between the cover plate and the covering groove. When the cover plate and the covering groove are squeezed and clamped by the clamping assembly, the silicon nitride window plate is sealed by the first sealing ring and the second sealing ring.

4. The in-situ liquid sample chamber according to claim 1, characterized in that: The locking member is provided with a hollow cavity, and the lower part of the buckle groove is provided with a limiting groove matching the elastic protrusion.

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