Atomic force microscope sample real-time heating table

Abstract

The utility model relates to an atomic force microscope sample real-time heating table which comprises a supporting table and a heating assembly, a sample table is arranged at the upper end of the supporting table, the heating assembly used for stably heating a sample in real time is arranged at the upper end of the sample table, and the heating assembly comprises a PTFE wafer, a conductive silver adhesive, a sample block, a connecting wire and a rubber coating sheet. A conductive silver adhesive is arranged on the surface of the PTFE wafer, a sample block is arranged in the middle of the upper end of the conductive silver adhesive, and a connecting wire is connected to the rear side of the surface of the conductive silver adhesive. According to the real-time sample heating table for the atomic force microscope, the PTFE wafer is adhered to the sample table for rapid fixation, the conductive silver adhesive is coated on the PTFE wafer, the conductive silver adhesive is matched with the connecting wire to be connected with the grounding wire for grounding so as to avoid charge influence, meanwhile, the conductive silver adhesive also plays a role in fixing the sample block, so that the sample block is prevented from deviating during testing, and the test accuracy is improved. The film-coated sheet plays a role in limiting the signal line, and the situation that the signal line is hard and influences subsequent image scanning is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to microscope technical field especially is a kind of atomic force microscope sample real-time heating platform. BACKGROUND

[0002] Atomic force microscope is one of the third generation new microscopes developed after optical microscope and electron microscope. It relies on small probe to detect the topography of measured object and its electric, magnetic, viscoelastic force, hardness and other properties. Due to its ultra-high resolution, no need for substrate to have conductivity, can operate in liquid and atmospheric environment and other advantages, atomic force microscope has been widely used in imaging DNA and studying the interaction of DNA and other molecules.

[0003] At present, atomic force microscope is used for scanning in atomic force microscope after heating sample by using conventional heating device in the case of needing to study the relationship between sample surface characteristics and temperature change. However, the surface of existing sample real-time heating platform has very strong electric charge when being used, and 10V power supply can greatly interfere with detection, which easily leads to unsatisfactory result.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and an atomic force microscope sample real-time heating platform is urgently needed. UTILITY MODEL CONTENT

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the problem that sample heating platform structure design is unreasonable in prior art, so that heated sample cannot meet the detection needs.

[0006] To solve the above technical problem, the utility model provides an atomic force microscope sample real-time heating platform, which comprises a supporting table, a sample table arranged on the supporting table, and a heating assembly arranged on the sample table and provided with a sample block to be heated. The heating assembly comprises a PTFE disc, conductive silver glue, a sample block, a connecting wire and a rubber sheet. The PTFE disc is bonded to the sample table, the surface of the PTFE disc is provided with the conductive silver glue, the sample block is bonded to the conductive silver glue, one side of the conductive silver glue is connected with the connecting wire, and the side edge of the PTFE disc is connected with the rubber sheet. The atomic force microscope sample real-time heating platform can realize rapid heating in sample real-time testing based on ceramic heating plate, temperature controller, thermocouple and solid-state relay. In the heating process, the imaging stability of atomic force microscope is studied, and the scanning time, imaging speed, scanning tube thermal drift and other aspects are verified. According to the test result, the device based on ceramic heating plate heating table can meet the needs of atomic force microscope for sample heating test.

[0007] In an embodiment of the utility model, the outside cover of the support table is provided with an organism.

[0008] In an embodiment of the utility model, the support table is provided with a grounding wire, and the other end of the connecting wire away from the conductive silver adhesive is connected with the grounding wire.

[0009] In an embodiment of the utility model, the inside of the rubber-coated sheet is provided with a signal wire.

[0010] In an embodiment of the utility model, the heating table further comprises a direct current power supply, the direct current power supply is used for supplying power to the heating assembly, and the PTFE disc and the direct current power supply are electrically connected.

[0011] In an embodiment of the utility model, a temperature controller is electrically connected in the circuit connecting the direct current power supply and the heating assembly, and the temperature controller is used for controlling the heating temperature of the heating assembly.

[0012] In an embodiment of the utility model, a thermocouple is arranged in the heating assembly, and the thermocouple is used for detecting the heating temperature value of the ceramic sheet in the heating assembly.

[0013] In an embodiment of the utility model, the negative electrode of the direct current power supply is grounded.

[0014] In an embodiment of the utility model, the organism is provided with an auxiliary assembly, and the auxiliary assembly is used for wiring.

[0015] In an embodiment of the utility model, the auxiliary assembly comprises a sealing block and a stop block, the sealing block is mounted on the organism, the front end of the sealing block is provided with the stop block, and the stop block is used for limiting the circuit on the sealing block.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] 1. The PTFE disc is adhered to the sample table for rapid fixing, the conductive silver adhesive is coated on the PTFE disc, the conductive silver adhesive is connected with the grounding wire through the connecting wire to avoid the influence of electric charge and fix the sample block, avoid the sample block from deviating during testing, the rubber-coated sheet limits the signal wire to avoid the hard signal wire from affecting subsequent scanning.

[0018] 2. The utility model connects the black wire to the black interface and the red wire to the red interface, and connects the black interface and the green interface through two crocodile clip wires to short-circuit the black interface and the green interface, so that the negative electrode is grounded, thereby avoiding the interference of the V power supply. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the drawings, the utility model is further explained in detail, wherein

[0020] Fig. 1 It is the whole structure schematic diagram of the utility model of a real-time heating table for atomic force microscope sample;

[0021] Fig. 2 It is the heating assembly structure schematic diagram of the utility model of a real-time heating table for atomic force microscope sample;

[0022] Fig. 3 It is the system structure schematic diagram of the utility model of a real-time heating table for atomic force microscope sample.

[0023] The description of the drawing of the specification is as follows: 1, support table;2, machine body;3, sample table;4, heating assembly;401, PTFE round piece;402, conductive silver glue;403, sample block;404, connecting wire;405, rubber sheet;5, ground wire;6, signal wire;7, auxiliary assembly;701, sealing block;702, stop block;8, temperature controller;9, solid-state relay;10, direct current power supply;11, black interface;12, green interface;13, red interface;14, alligator clip wire. Specific implementation

[0024] The utility model is further explained in combination with the drawings and specific embodiment, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0025] Referring to Fig. 1 The utility model discloses a real-time heating table for atomic force microscope sample, including support table 1 and heating assembly 4, the upper end of support table 1 is provided with sample table 3, the outside of support table 1 is provided with machine body 2, and the outside of PTFE round piece 401 is electrically connected with direct current power supply 10, direct current power supply 10 is electrically connected with temperature controller 8, and temperature controller 8 is electrically connected with solid-state relay 9, the left side of the front end of direct current power supply 10 is provided with black interface 11, the outside of black interface 11 is connected with black wire, and the right side of black interface 11 is provided with green interface 12, the right side of green interface 12 is provided with red interface 13, the outside of red interface 13 is connected with red wire, and the inside of green interface 12 and black interface 11 is installed with alligator clip wire 14, and simultaneously the between black interface 11 and green interface 12 is connected through two alligator clip wires 14, and black interface 11 and green interface 12 are short-circuited, reach the effect of negative ground, to avoid the interference produced by 10V power supply, and the side of connecting wire 404 is connected with ground wire 5, and the inside of rubber sheet 405 is provided with signal wire 6.

[0026] AsFig. 2 and Fig. 3 As shown, the heating component 4 for real-time stable heating of the sample is located at the upper end of the sample stage 3. The heating component 4 includes a PTFE disc 401, conductive silver paste 402, a sample block 403, a connecting wire 404, and a coating sheet 405. The surface of the PTFE disc 401 is coated with conductive silver paste 402. The PTFE disc 401 is adhered to the sample stage 3 for quick fixation. The sample block 403 is located in the middle of the upper end of the conductive silver paste 402. The conductive silver paste 402 is applied to the PTFE disc 401. The conductive silver paste 402, together with the connecting wire 404, is connected to the grounding wire 5 for grounding to avoid the influence of charge. At the same time, the conductive silver paste 402 also plays a role in fixing the sample block 403 to prevent it from shifting during testing. The connecting wire 404 is connected to the rear side of the surface of the conductive silver paste 402. The coating sheet 405 is connected to the side of the PTFE disc 401. The coating sheet 405 plays a role in limiting the signal line 6 to prevent its stiffness from affecting subsequent scanning.

[0027] The front side of the body 2 is provided with an auxiliary component 7 for assisting the routing of the circuit. There are two sets of auxiliary components 7. The auxiliary component 7 includes a sealing block 701 and a stop block 702. The front end of the sealing block 701 is provided with a stop block 702. The rubber sealing block 701 can be opened for the routing of the circuit from inside the body 2. It has a good sealing effect and can also limit the circuit.

[0028] In summary, this atomic force microscope sample real-time heating stage firstly... Figs. 1-3 The structure shown uses AB glue PTFE disc 401 to quickly fix the sample stage 3. After stabilization, a protective film 405 is used to hold the signal line 6 in place, preventing its rigidity from affecting subsequent scanning. Conductive silver glue 402 is then applied to the PTFE disc 401. The conductive silver glue 402, along with the connecting wire 404, connects to the grounding wire 5 for grounding to prevent charge interference. Simultaneously, the conductive silver glue 402 also fixes the sample block 403, preventing it from shifting during testing. During testing, the machine body 2 is connected... The DC power supply 10 has a black wire connected to the black interface 11 and a red wire connected to the red interface 13. The black interface 11 and the green interface 12 are connected by two alligator clip wires 14. Shorting the black interface 11 and the green interface 12 achieves the effect of negative grounding, thereby avoiding interference from the 10V power supply. At this time, the DC power supply 10 supplies power to the ceramic heating element for heating. When the DC power supply 10 supplies power to the temperature controller 8 and the hot coupler, the temperature controller 8 and the hot coupler, together with the solid-state relay 9, perform real-time control and adjustment of the temperature of the ceramic heating element.

[0029] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An atomic force microscope sample real-time heating stage, characterized by, Include: Supporting table; Sample table, which is arranged on the supporting table; Heating assembly, which is arranged on the sample table, and the heating assembly is provided with a sample block to be heated; Wherein, the heating assembly comprises a PTFE disc, conductive silver glue, a sample block, a connecting wire and a rubber sheet, the PTFE disc is bonded to the sample table, the surface of the PTFE disc is provided with conductive silver glue, and the conductive silver glue is bonded with the sample block, one side of the conductive silver glue is connected with the connecting wire, and the side edge of the PTFE disc is connected with the rubber sheet.

2. The atomic force microscope sample real-time heating stage of claim 1, wherein: The outer cover of the supporting table is provided with an organism.

3. The atomic force microscope sample real-time heating stage of claim 1, wherein: The supporting table is provided with a grounding wire, and the other end of the connecting wire away from the conductive silver glue is connected with the grounding wire.

4. The atomic force microscope sample real-time heating stage of claim 1, wherein: The inside of the rubber sheet is provided with a signal line.

5. The atomic force microscope sample real-time heating stage of claim 1, wherein: The heating table further comprises a direct current power supply, the direct current power supply is used for power supply of the heating assembly, and the PTFE disc and the direct current power supply are electrically connected.

6. The atomic force microscope sample real-time heating stage of claim 5, wherein: The line connected with the direct current power supply and the heating assembly is electrically connected with a temperature controller, and the temperature controller is used for controlling the heating temperature of the heating assembly.

7. The atomic force microscope sample real-time heating stage of claim 6, wherein: The heating assembly is provided with a thermocouple, and the thermocouple is used for detecting the heating temperature value of the ceramic sheet in the heating assembly.

8. The atomic force microscope sample real-time heating stage of claim 5, wherein: The negative electrode of the direct current power supply is grounded.

9. The atomic force microscope sample real-time heating stage of claim 2, wherein: The organism is provided with an auxiliary assembly, and the auxiliary assembly is used for line wiring.

10. The atomic force microscope sample real-time heating stage of claim 9, wherein: The auxiliary assembly comprises a sealing block and a stop block, the sealing block is installed on the organism, the front end of the sealing block is provided with the stop block, and the stop block is used for limiting the line on the sealing block.

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