CN114354978B - Device for avoiding bubble generation on surface of atomic force microscope probe and use method - Google Patents
Device for avoiding bubble generation on surface of atomic force microscope probe and use method Download PDFInfo
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- CN114354978B CN114354978B CN202111365535.5A CN202111365535A CN114354978B CN 114354978 B CN114354978 B CN 114354978B CN 202111365535 A CN202111365535 A CN 202111365535A CN 114354978 B CN114354978 B CN 114354978B
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- atomic force
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- impregnating solution
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- 239000000523 sample Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 17
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 15
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 15
- 239000003960 organic solvent Substances 0.000 claims abstract description 13
- 239000012153 distilled water Substances 0.000 claims abstract description 7
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005470 impregnation Methods 0.000 claims abstract description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 22
- 238000007654 immersion Methods 0.000 description 16
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 12
- 230000008569 process Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 238000004630 atomic force microscopy Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Microscoopes, Condenser (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a device for avoiding bubbles on the surface of an atomic force microscope probe, which comprises a box body and a clamp, wherein a coordination hole is formed in the top of the box body, and the clamp is positioned in the outer circumferential direction of the coordination hole and is used for fixing a tip seat provided with the atomic force microscope probe above the coordination hole; the box body is also provided with a diversion inlet and a diversion outlet which are respectively communicated with the coordination hole, the first impregnating solution and the second impregnating solution flow in from the diversion inlet in sequence, flow out from the diversion outlet after reaching the atomic force microscope probe on the impregnation needle point seat at the coordination hole, and the first impregnating solution is an organic solvent compatible with the polydimethylsiloxane and the water; the second impregnating solution is water or distilled water. The invention has the advantages of simple structure and simple and convenient operation.
Description
Technical Field
The invention relates to the field of atomic force microscope probe treatment, in particular to a device for avoiding bubbles on the surface of an atomic force microscope probe and a use method thereof.
Background
Atomic force microscopy has received a great deal of attention in various fields since the invention in 1986, and tremendous technological advances have been made in the last decades based on this equipment. The atomic force microscope measures the interaction between the probe and the sample surface by detecting the deflection of the probe, and further calculates the detailed information which the experiment wants to obtain. Due to the high force and displacement sensitivity, and the ability to operate in various environments (air, liquid, vacuum, etc.). Due to its excellent spatial resolution, atomic force microscopy is used not only for imaging the surface of a sample, but also for detecting local chemical and mechanical interactions between samples.
As can be seen from its working principle, the resolution of an atomic force microscope depends on the shape, elastic modulus, etc. of an atomic force microscope probe. However, in the process of transportation and storage, the substrate material of the packaging box is polydimethylsiloxane (commonly known as dimethicone or silicone oil), so that the surface of the atomic force microscope probe can be wrapped with a layer of polydimethylsiloxane. Polydimethylsiloxane is a hydrophobic class of organosilicon materials and atomic force microscope probes are small in size, typically in the range of 100-200 microns.
For these two reasons, the atomic force microscope probe is easy to form a bubble to wrap when being put into a liquid environment for use. Since the existing device cannot avoid the generation of bubbles, the generated bubbles are very small and are difficult to remove by a user. The most common practice is to remove the atomic force microscope probe, blow dry it, and replay it into the liquid. However, this method does not ensure that bubbles will not re-form on the afm probe that is re-placed in the liquid. The other way is to remove the bubbles by a ear-washing ball blow-drying method after the bubbles are generated. Namely: and taking out the atomic force microscope probe with the bubbles, and drying the liquid on the surface of the probe through the ear washing ball. Then, the atomic force microscope probe was immersed in the liquid according to the above method.
It can be seen that the following technical problems exist in the prior art: (1) The generation of bubbles cannot be actively avoided, and the conventional method is that the bubbles are treated after being generated, so that no preventive measures are taken to prevent the generation of bubbles when the atomic force microscope probe is put into a liquid environment for use; (2) Excessive air flow in the conventional method is easy to deform the atomic force microscope probe in the drying process, so that the probe is damaged; (3) The conventional method cannot ensure that the atomic force microscope probe cannot generate bubbles again after being dried, and the atomic force microscope probe is put into a liquid environment again after being dried, so that bubbles still can be formed; (4) troublesome and time-consuming operations.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a device for preventing bubbles from generating on the surface of an atomic force microscope probe, which has a simple structure and is simple and convenient to operate, and a use method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
The device for avoiding bubbles on the surface of the atomic force microscope probe comprises a box body and a clamp, wherein a coordination hole is formed in the top of the box body, and the clamp is positioned in the outer circumferential direction of the coordination hole and is used for fixing a tip seat provided with the atomic force microscope probe above the coordination hole; the box body is also provided with a diversion inlet and a diversion outlet which are respectively communicated with the coordination hole, a first impregnating solution and a second impregnating solution flow in from the diversion inlet in sequence, flow out from the diversion outlet after reaching an atomic force microscope probe on an impregnated needle point seat at the coordination hole, and the first impregnating solution is an organic solvent compatible with the polydimethylsiloxane and the water; the second impregnating solution is water or distilled water.
As a further improvement to the above technical solution:
the clamp is symmetrically arranged about the center of the coordination hole.
The fixture comprises a clamping part and a fixing part, wherein the clamping part is used for clamping the needle point seat, the fixing part is used for fixing the fixture, and the clamping part can rotate around the fixing part.
The clamping part and the fixing part are vertically arranged.
The diversion inlet and the diversion outlet are symmetrically arranged on two side walls of the box body.
The device also comprises a flow rate control device which is used for controlling the flow rate of the impregnating solution. When the first impregnating solution is acetone, the flow rate control device controls the upper limit value of the flow rate of the first impregnating solution to be 50cm/min.
The flow rate control device is a syringe or a flow rate valve.
As a general inventive concept, the present invention also provides a method of using a device for preventing bubbles from being generated on a surface of an atomic force microscope probe, comprising the steps of:
S1, fixing a needle point seat provided with an atomic force microscope probe on a box body by using a clamp;
S2, opening a diversion inlet and introducing a first impregnating solution for impregnating a needle tip seat provided with an atomic force microscope probe, wherein the first impregnating solution is an organic solvent compatible with polydimethylsiloxane and water;
S3, opening a diversion outlet, and introducing a second impregnating solution into the diversion inlet for impregnating a needle tip seat provided with an atomic force microscope probe, wherein the second impregnating solution is water or distilled water;
S4, removing the tip seat provided with the atomic force microscope probe, and using the atomic force microscope probe for subsequent experiments.
The first impregnating solution is acetone or an alcohol compound.
The upper limit value of the flow rate of the first impregnating solution is 50cm/min.
Compared with the prior art, the invention has the advantages that:
The device for preventing the bubble generation on the surface of the atomic force microscope probe and the use method thereof have simple structure and simple operation, the whole of the tip seat with the atomic force microscope probe is fixed on the device and is sequentially immersed by the first immersion liquid and the second immersion liquid, the first immersion liquid is an organic solvent compatible with polydimethylsiloxane and water, the polydimethylsiloxane on the surface of the probe can be taken away, the bubble can not be generated on the surface of the probe in the immersion process, and the first immersion liquid is compatible with water, so that the first immersion liquid on the surface of the probe can be taken away when the probe is immersed by the second immersion liquid, and the bubble can not be generated on the surface of the probe in the immersion process. The surface of the immersed probe is coated with water, so that bubbles on the surface of the probe can be actively prevented due to surface tension when the immersed probe is used in a liquid environment.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
Fig. 2 is a top view of the device of the present invention.
Fig. 3 is a sectional view taken along line B-B in fig. 2.
FIG. 4 is a schematic view showing the use state of an atomic force microscope probe after being treated by the device of the present invention.
FIG. 5 is a schematic view showing the use of an atomic force microscope probe which is not treated by the apparatus of the present invention.
The reference numerals in the drawings denote: 1. a case; 11. a coordination hole; 12. a diversion inlet; 13. a diversion outlet; 2. and (3) clamping.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples. The instruments or materials used in the present invention are commercially available unless otherwise specified.
Example 1:
As shown in fig. 1 to 3, a device for avoiding bubbles on the surface of an atomic force microscope probe according to this embodiment includes a case 1 and a jig 2, wherein a coordination hole 11 is provided at the top of the case 1, and the jig 2 is located in the outer circumferential direction of the coordination hole 11 and is used for fixing a tip seat containing the atomic force microscope probe above the coordination hole 11; the box body 1 is also provided with a diversion inlet 12 and a diversion outlet 13, the diversion inlet 12 and the diversion outlet 13 are respectively communicated with the coordination hole 11, a first impregnating solution and a second impregnating solution sequentially flow in from the diversion inlet 12, flow out from the diversion outlet 13 after reaching an atomic force microscope probe on an impregnated needle point seat at the coordination hole 11, and the first impregnating solution is an organic solvent compatible with polydimethylsiloxane and water; the second impregnating solution is water or distilled water.
According to the device for preventing the bubble generation on the surface of the atomic force microscope probe, the whole probe tip seat with the atomic force microscope probe is fixed on the device, and is sequentially immersed by the first immersion liquid and the second immersion liquid, wherein the first immersion liquid is an organic solvent compatible with polydimethylsiloxane and water, so that the polydimethylsiloxane on the surface of the probe can be taken away, the bubble can not be generated on the surface of the probe in the immersion process, and the first immersion liquid is compatible with water, so that the first immersion liquid on the surface of the probe can be taken away when the probe is immersed by the second immersion liquid, and the bubble can not be generated on the surface of the probe in the immersion process. The surface of the immersed probe is coated with water, so that bubbles on the surface of the probe can be prevented from being generated due to surface tension when the immersed probe is used in a liquid environment.
The jig 2 is arranged symmetrically about the center of the coordination hole 11. Because the existing needle point seat is basically cylindrical, the needle point seat is clamped by the two clamps 2 symmetrically, which is more beneficial to the stable clamping of the needle point seat.
The fixture 2 comprises a clamping part and a fixing part, wherein the clamping part is used for clamping the needle point seat, the fixing part is used for fixing the fixture 2, and the clamping part is rotatable around the fixing part and is arranged in such a way that the needle point seat which is similar to a cylinder can be clamped more stably. In this embodiment, the fixing portions are fixedly connected by screws.
The clamping part and the fixing part are vertically arranged.
The diversion inlet 12 and the diversion outlet 13 are symmetrically arranged on the two side walls of the box body 1. The diversion inlet 12 and the diversion outlet 13 are arranged on the side wall of the box body 1, and the coordination hole 11 is arranged at the top of the box body 1, so that the first impregnating solution and the second impregnating solution can not directly impact the needle point seat when entering the box body 1, the impregnating solution gradually fills the whole box body 1 below the coordination hole 11, and the probe is prevented from being damaged due to direct impact of the impregnating solution. When the first impregnating solution uses an organic solvent having a relatively high viscosity, such as acetone, the apparatus further includes a flow rate control device (not shown) for controlling the flow rate of the impregnating solution. Flow rate control devices are respectively arranged at the diversion inlet 12 and the diversion outlet 13 and are used for controlling the flow rate of the first impregnating solution; the flow rate control devices respectively arranged at the flow guide inlet 12 and the flow guide outlet 13 effectively control the deformation of the probe caused by the change of temperature or pressure due to the high viscosity and the too fast flow rate of the organic solvent.
The flow rate control device is a syringe or a flow rate control valve.
The application method of the device for avoiding bubbles on the surface of the atomic force microscope probe comprises the following steps:
s1, fixing a needle point seat provided with an atomic force microscope probe on a box body 1 by using a clamp 2;
S2, opening a diversion inlet 12 to introduce a first impregnating solution for impregnating a needle tip seat provided with an atomic force microscope probe, wherein the first impregnating solution and polydimethylsiloxane are similar compatible organic solvents;
S3, opening a diversion outlet 13, and introducing a second impregnating solution into the diversion inlet 12 for impregnating a needle tip seat provided with an atomic force microscope probe, wherein the second impregnating solution is water or distilled water; in this embodiment, the flow rate control means at the diversion inlet 12 and the diversion outlet 13 are controlled such that the second impregnation fluid fills the entire tank.
S4, removing the needle tip seat provided with the atomic force microscope probe, and directly using the atomic force microscope probe for subsequent experiments without drying or airing the atomic force microscope probe.
In this embodiment, the first impregnating solution is acetone, and in other embodiments, the first impregnating solution is an alcohol compound, for example, methanol, ethanol, isopropanol, etc. can achieve the same or similar technical effects.
When the first impregnating solution is an organic solvent with high viscosity such as acetone, the upper limit value of the flow rate of the first impregnating solution is 50cm/min, so that deformation of the probe due to too high flow rate can be prevented when the probe is impregnated with the organic solvent with too high viscosity.
As shown in fig. 4, the use state of the atomic force microscope probe treated by the apparatus of the present invention is schematically shown, in which no bubbles are generated on the surface of the probe, and bubbles are formed on the surface of the untreated probe (as shown in fig. 5).
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a device for avoid atomic force microscope probe surface to produce bubble which characterized in that: the atomic force microscope probe comprises a box body (1) and a clamp (2), wherein a coordination hole (11) is formed in the top of the box body (1), and the clamp (2) is positioned in the outer circumferential direction of the coordination hole (11) and is used for fixing a tip seat provided with the atomic force microscope probe above the coordination hole (11);
The box body (1) is also provided with a diversion inlet (12) and a diversion outlet (13), the diversion inlet (12) and the diversion outlet (13) are respectively communicated with the coordination hole (11), a first impregnating solution and a second impregnating solution flow in from the diversion inlet (12) in sequence, and flow out from the diversion outlet (13) after reaching the atomic force microscope probe on the point seat of the impregnation needle at the coordination hole (11), wherein the first impregnating solution is an organic solvent compatible with the polydimethylsiloxane and the water; the second impregnating solution is water or distilled water.
2. The apparatus for avoiding bubbles generated on the surface of an atomic force microscope probe according to claim 1, wherein: the clamp (2) is arranged symmetrically about the center of the coordination hole (11).
3. The apparatus for avoiding bubbles generated on the surface of an atomic force microscope probe according to claim 1, wherein: the clamp (2) comprises a clamping part and a fixing part, wherein the clamping part is used for clamping the needle point seat, the fixing part is used for fixing the clamp (2), and the clamping part is rotatable around the fixing part.
4. A device for avoiding bubbles generated on a surface of an atomic force microscope probe according to claim 3, wherein: the clamping part and the fixing part are vertically arranged.
5. The apparatus for avoiding bubbles generated on the surface of an atomic force microscope probe according to claim 1, wherein: the diversion inlet (12) and the diversion outlet (13) are symmetrically arranged on the two side walls of the box body (1).
6. The apparatus for avoiding bubbles generated on the surface of an atomic force microscope probe according to claim 1, wherein: the device also comprises a flow rate control device which is used for controlling the flow rate of the impregnating solution.
7. The apparatus for preventing bubbles from being generated on a surface of an atomic force microscope probe according to claim 6, wherein: the flow rate control device is a syringe or a flow rate valve.
8. A method of using the apparatus for avoiding bubbles on the surface of an atomic force microscope probe according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
s1, fixing a needle point seat provided with an atomic force microscope probe on a box body (1) by using a clamp (2);
S2, opening a diversion inlet (12) and introducing a first impregnating solution for impregnating a needle tip seat provided with an atomic force microscope probe, wherein the first impregnating solution is an organic solvent compatible with polydimethylsiloxane and water;
S3, opening a diversion outlet (13), and introducing a second impregnating solution into the diversion inlet (12) for impregnating a tip seat provided with an atomic force microscope probe, wherein the second impregnating solution is water or distilled water;
S4, removing the tip seat provided with the atomic force microscope probe, and using the atomic force microscope probe for subsequent experiments.
9. The method of use according to claim 8, wherein: the first impregnating solution is acetone or an alcohol compound.
10. The method of use according to claim 9, wherein: the upper limit value of the flow rate of the first impregnating solution is 50cm/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365535.5A CN114354978B (en) | 2021-11-17 | 2021-11-17 | Device for avoiding bubble generation on surface of atomic force microscope probe and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111365535.5A CN114354978B (en) | 2021-11-17 | 2021-11-17 | Device for avoiding bubble generation on surface of atomic force microscope probe and use method |
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| CN114354978A CN114354978A (en) | 2022-04-15 |
| CN114354978B true CN114354978B (en) | 2024-04-19 |
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| CN114354978A (en) | 2022-04-15 |
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