CN211122603U - Vacuum pen device for transmission electron microscope sample carrying net and sample moving - Google Patents
Vacuum pen device for transmission electron microscope sample carrying net and sample moving Download PDFInfo
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- CN211122603U CN211122603U CN201921895693.XU CN201921895693U CN211122603U CN 211122603 U CN211122603 U CN 211122603U CN 201921895693 U CN201921895693 U CN 201921895693U CN 211122603 U CN211122603 U CN 211122603U
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Abstract
The utility model discloses a vacuum pen device that transmission electron microscope sample carried net and sample moved and was got, a serial communication port, include the suction adjustment mechanism of the micro vacuum pump and the direct current motor speed regulator that are connected with the switch electricity, suction adjustment mechanism is connected with micro vacuum pump's motor, micro vacuum pump connects the sample pen. The device has low cost, simple manufacture and convenient use, can avoid the damage to the sample rod and the supporting film when loading the sample, and is not only suitable for the transfer of the transmission electron microscope sample, but also suitable for the flexible transfer of the flaky tiny object.
Description
Technical Field
The utility model relates to a small article move and get equipment, specifically a vacuum pen device that transmission electron microscope sample carried net and sample moved and get.
Background
At present, a transmission electron microscope grid sample and a sample transfer are mainly clamped by tweezers, the grid mainly comprises a copper grid, a nickel grid, a nylon grid and the like, the diameter of a mesh hole is about 3mm, the thickness of the mesh hole is about 20 micrometers, and the surface of the grid for carrying the sample is often covered with a layer of supporting film with the thickness of nano to dozens of nano, usually amorphous carbon supporting film. Therefore, the problems of damage of a supporting film on a copper mesh, deformation of the copper mesh and the like are easily caused after the common tweezers are clamped for many times, so that the problems that the transmission electron microscope test is not changed, for example, the sample load is unsuccessful due to the damage of the supporting film or the loaded sample falls off, the height of the sample is changed due to the deformation of the carrying net, the multiple focusing is needed and the like are brought, and the test efficiency is seriously influenced. Some imported high-end tweezers can effectively reduce the problem, but the tweezers still easily collide with a sample rod in the sample loading process to scratch the sample rod, so that a series of other problems are caused, flexible adjustment in the sample loading process is difficult, the imported high-end tweezers are expensive, and the experiment cost is further increased. Although vacuum sample suction pens are sold in the market at present, the suction force of the vacuum sample suction pens cannot be adjusted, so that the requirements for moving and taking different sample pairs cannot be met.
Nowadays, transmission electron microscopy is widely applied to the field of microstructure analysis of metal, ceramic, semiconductor, plastic, biomedicine and the like, the integrity of a supporting film has a great influence on the test when a sample is prepared, and a vacuum device with adjustable suction force is still lacking in the market to improve the situation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vacuum pen device that transmission electron microscope sample carried net and sample moved and get to prior art not enough. The device has low cost, simple manufacture and convenient use, can avoid the damage to the sample rod and the supporting film when loading the sample, and is not only suitable for the transfer of the transmission electron microscope sample, but also suitable for the flexible transfer of the flaky tiny object.
Realize the utility model discloses the technical scheme of purpose is:
the utility model provides a vacuum pen device that transmission electron microscope sample carrier net and sample moved and get, lies in with prior art difference, includes the suction adjustment mechanism of the micro vacuum pump and the direct current motor speed regulator that are connected with switch electricity, and suction adjustment mechanism is connected with micro vacuum pump's motor, micro vacuum pump connects the sampling pen.
The sampling pen is a hard hollow plastic vacuum tube pen with the diameter of 4.3 mm.
The adjusting range of the voltage regulator is as follows: 1.8-12V.
The working process of the device is as follows: the power switch of the vacuum pen device is turned on, the speed regulator of the direct current motor is adjusted to change the suction force of the micro vacuum pump, the suction force is adjusted to a required value, the pen point (needle head) of the sampling pen is placed above the sample, the sample can be firmly sucked by slight contact, and the sample can be moved.
The device has low cost, simple manufacture and convenient use, can avoid the damage to the sample rod and the supporting film when loading the sample, and is not only suitable for the transfer of the transmission electron microscope sample, but also suitable for the flexible transfer of the flaky tiny object.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Detailed Description
The contents of the present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
Example (b):
referring to fig. 1, the vacuum pen device for transmission electron microscope sample grid loading and sample moving comprises a micro vacuum pump electrically connected with a power switch and a suction adjusting mechanism of a direct current motor speed regulator, wherein the suction adjusting mechanism is connected with a motor of the micro vacuum pump, and the micro vacuum pump is connected with a sampling pen.
The sampling pen is a hard hollow plastic vacuum tube pen with the diameter of 4.3 mm.
The adjusting range of the voltage regulator is as follows: 1.8-12V.
The working process of the device is as follows:
firstly, connecting the positive electrode and the negative electrode of a 12V power adapter of the vacuum pen with the positive electrode and the negative electrode of a switch respectively;
secondly, connecting a direct current motor speed regulator, wherein the direct current motor speed regulator is a 1809BK module, and the anode and the cathode of a power supply of a model FC25401 are connected with a switch;
thirdly, connecting the positive electrode and the negative electrode of a vacuum pump, in this case 370 micro vacuum pump, with the positive electrode and the negative electrode of the motor joint of the DC motor speed regulator respectively;
fourthly, connecting one end of a silicone tube with the inner diameter of 4mm with an air suction opening of a 370 micro vacuum pump, and connecting the other end of the silicone tube with one end of a sampling pen with the outer diameter of 4.3 mm;
and fifthly, polishing the needle head of the syringe with the specification of 1m L until the oblique section is flat, mounting the polished needle head at the other end of the sampling pen, turning on a power switch of a vacuum pen device, adjusting a speed regulator of a direct current motor to change the suction force of a micro vacuum pump, adjusting the suction force to a required value, placing the pen point (needle head) of the sampling pen above the sample, firmly sucking the sample by slight contact, and moving the sample.
Whether the supporting film transferring device of the transmission electron microscope sample can influence the integrity of the supporting film or not is further researched, and the supporting film is subjected to a plurality of transferring experiments by using the device.
After 1 transfer, 5 transfers, 10 transfers and 20 transfers, the carbon supporting film keeps good integrity, the carbon supporting film is not deformed before and after the net carrying and transferring area, the device is not contacted with the sample rod in the loading process, and the abrasion to the sample rod when the sample is loaded is well reduced.
Claims (3)
1. The utility model provides a vacuum pen device that transmission electron microscope sample carrier net and sample moved and get which characterized in that, includes the suction adjustment mechanism of the miniature vacuum pump and the direct current motor speed regulator that are connected with switch electricity, and suction adjustment mechanism is connected with the motor of miniature vacuum pump, miniature vacuum pump connection sampling pen.
2. The vacuum pen device for transmission electron microscope sample carrying net and sample transfer as claimed in claim 1, wherein the sampling pen is a 4.3mm hard hollow plastic vacuum tube pen.
3. The vacuum pen device for transmission electron microscope sample grid and sample removal according to claim 1, wherein the adjustment range of the speed regulator of the dc motor is as follows: 1.8-12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921895693.XU CN211122603U (en) | 2019-11-06 | 2019-11-06 | Vacuum pen device for transmission electron microscope sample carrying net and sample moving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921895693.XU CN211122603U (en) | 2019-11-06 | 2019-11-06 | Vacuum pen device for transmission electron microscope sample carrying net and sample moving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211122603U true CN211122603U (en) | 2020-07-28 |
Family
ID=71697427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921895693.XU Expired - Fee Related CN211122603U (en) | 2019-11-06 | 2019-11-06 | Vacuum pen device for transmission electron microscope sample carrying net and sample moving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211122603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198174A (en) * | 2020-08-25 | 2021-01-08 | 华东师范大学 | Sample loading device of transmission electron microscope |
-
2019
- 2019-11-06 CN CN201921895693.XU patent/CN211122603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198174A (en) * | 2020-08-25 | 2021-01-08 | 华东师范大学 | Sample loading device of transmission electron microscope |
| CN112198174B (en) * | 2020-08-25 | 2023-01-13 | 华东师范大学 | Sample loading device of transmission electron microscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 Termination date: 20211106 |