Modular atomic force microscope

Abstract

The utility model belongs to the field of atomic force microscopes, and particularly relates to a modular atomic force microscope, which solves the problem that a sample holder of a traditional atomic force microscope in the prior art needs to fix a sample manually and is inconvenient to operate, and comprises a base, and a laser transmitter module and a reflector are mounted on the upper surface of the base. An optical microscope module, a CCD camera module and a monitor module are installed on the right side of the upper surface of the base, a fixing module is arranged in the middle of the upper surface of the base and comprises a cavity formed in the base, a servo motor is fixedly connected to the back face of the base, and an output rotating shaft of the servo motor penetrates through the base and extends into the base. An output rotating shaft of the servo motor is fixedly connected with a positive and negative threaded rod, two threaded surfaces of the positive and negative threaded rod are in threaded connection with threaded rings, and the outer surface of each threaded ring is fixedly connected with two movable plates, so that a sample can be automatically fixed on the whole, and the whole device has a relatively good fixing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of atomic force microscopes, in particular to a modular atomic force microscope. Background Art

[0002] At present, an atomic force microscope is an analytical instrument that can be used to study the surface structure of solid materials including insulators. It studies the surface structure and properties of substances by detecting the extremely weak interatomic interaction force between the surface of a sample to be measured and a micro force-sensitive element. One end of a microcantilever that is extremely sensitive to weak forces is fixed, and the tiny tip at the other end approaches the sample. At this time, it will interact with the sample, and the acting force will cause the microcantilever to deform or its motion state to change. When scanning the sample, these changes are detected by a sensor, and the acting force distribution information can be obtained, so as to obtain the surface topography structure information and surface roughness information with nanometer-level resolution.

[0003] For the sample during the detection line, it is necessary to manually fix the sample on the upper surface of the sample holder, and then carry out the monitoring operation. However, the sample holder of the traditional atomic force microscope requires manual fixation of the sample, and the operation is relatively inconvenient. Content of the Utility Model

[0004] The technical problem solved by the utility model is that the sample holder of the traditional atomic force microscope requires manual fixation of the sample, and the operation is relatively inconvenient, and a modular atomic force microscope is provided.

[0005] To solve the above technical problem, the modular atomic force microscope provided by the utility model includes a base. A laser emitter module and a reflector are installed on the upper surface of the base. An optical microscope module, a CCD camera module and a monitor module are installed on the right side of the upper surface of the base. A fixing module is arranged in the middle of the upper surface of the base. The fixing module includes a cavity opened in the base. The back of the base is fixedly connected with a servo motor. The output rotating shaft of the servo motor penetrates through the base and extends into the interior of the base. The output rotating shaft of the servo motor is fixedly connected with a positive and negative threaded rod. Two threaded surfaces of the positive and negative threaded rod are both threadedly connected with a threaded ring. Two movable plates are fixedly connected to the outer surface of each threaded ring. Two movable rods are fixedly connected to the upper surface of each movable plate. Two groups of through grooves are opened on the upper surface of the base. The tops of the two groups of movable rods respectively penetrate through the two groups of through grooves and extend to the upper part of the base. Clamping plates are fixedly connected to the upper surfaces of the two groups of movable rods. A sample is clamped and fixed between the two clamping plates.

[0006] Preferably, a first bearing is fixedly connected to the middle of the outer surface of the positive and negative threaded rod. The outer surface of the first bearing is fixedly connected to a support plate, and the bottom surface of the support plate is fixedly connected to the inner bottom wall of the cavity. The support plate and the first bearing can support the middle of the positive and negative threaded rod, improve the stability of the positive and negative threaded rod during rotation, and at the same time, the first bearing can limit the positive and negative threaded rod, effectively preventing the screw ring on the outer surface of the positive and negative threaded rod from moving to the other thread surface of the positive and negative threaded rod, thus avoiding affecting the normal use of the fixing module.

[0007] Preferably, a second bearing is fixedly embedded in the back surface of the base. The output rotating shaft of the servo motor passes through the second bearing and extends into the cavity. The second bearing can effectively reduce the friction between the output rotating shaft and the base during the rotation of the servo motor, prevent the output rotating shaft from being worn due to long-term use of the servo motor, and thus effectively avoid affecting the normal use of the servo motor due to wear.

[0008] Preferably, a third bearing is fixedly connected to the inner wall of the cavity. One end of the positive and negative threaded rod away from the servo motor is fixedly connected to the inner ring of the third bearing. The third bearing can fix the positive and negative threaded rod at the end away from the servo motor, improve the stability of the positive and negative threaded rod during rotation, and effectively prevent the positive and negative threaded rod from swinging due to centrifugal force during rotation.

[0009] Preferably, two sliding rods are fixedly connected to the inner wall of the cavity. Two sliding rings are slidably connected to the outer surface of each sliding rod. The ends of the two groups of movable plates away from the screw ring are respectively fixedly connected to the outer surfaces of the two groups of sliding rings. During the movement of the movable plates, the sliding rings can be driven to slide on the outer surface of the sliding rods, so that the movable plates can slide along the direction of the sliding rods, improving the stability of the movable plates during movement and effectively preventing the movable plates from being stuck due to skewing during movement.

[0010] Preferably, anti-slip pads are fixedly connected to the mutually approaching side surfaces of the two clamping plates, which can effectively increase the friction between the clamping plates and the sample, improve the fixing effect of the clamping plates on the sample, and prevent the sample from shaking during detection.

[0011] Preferably, an anti-slip seat is fixedly connected to the bottom surface of the base, and an operation plate is fixedly connected to the front surface of the base. The anti-slip seat can effectively increase the friction between the bottom surface of the base and the tabletop, improve the stability of the microscope during placement, and effectively prevent the microscope from shaking on the tabletop due to external force.

[0012] Preferably, two stabilizing plates are fixedly connected to the outer surface of the servo motor, and the front surfaces of the stabilizing plates are fixedly connected to the back surface of the base, which can further fix the servo motor, effectively prevent the servo motor from shaking during use, and thus avoid affecting the normal use of the servo motor due to shaking.

[0013] Compared with the related technologies, the utility model has the following beneficial effects:

[0014] 1. The utility model drives the positive and negative threaded rod to rotate through the servo motor. The positive and negative threaded rod drives two screw rings to approach each other. The screw rings drive two groups of movable plates and movable rods to approach each other. The movable rods drive two clamping plates to approach each other to clamp and fix the sample. The whole can realize the automatic fixation of the sample, and the whole has a good fixation effect.

[0015] 2. The utility model uses the support plate and the first bearing to support the middle part of the positive and negative threaded rod, improve the stability of the positive and negative threaded rod during rotation, and at the same time use the first bearing to limit the positive and negative threaded rod, effectively preventing the screw ring on the outer surface of the positive and negative threaded rod from moving to another thread surface of the positive and negative threaded rod, thus avoiding affecting the normal use of the fixation module. The second bearing can effectively reduce the friction between the output rotating shaft of the servo motor and the base during the rotation of the servo motor, avoid the wear of the output rotating shaft of the servo motor caused by long-term use, and thus effectively avoid affecting the normal use of the servo motor due to wear.

[0016] In order to make the above and other purposes, features and advantages of the utility model more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is the rear view of the utility model;

[0020] Figure 3 It is the side view of the utility model;

[0021] Figure 4 It is the cavity cross-sectional view of the utility model.

[0022] Reference numerals in the drawings:

[0023] 1. Base; 2. Fixing module; 201. Through groove; 202. Clamping plate; 203. Servo motor; 204. Threaded ring; 205. Third bearing; 206. Cavity; 207. Movable rod; 208. Slip ring; 209. Slide bar; 2010. Second bearing; 2011. Right and left threaded rod; 2012. Movable plate; 2013. First bearing; 2014. Support plate; 3. Sample; 4. Optical microscope module; 5. CCD camera module; 6. Monitor module; 7. Operation panel; 8. Anti-slip seat; 9. Reflecting mirror; 10. Laser emitter module; 11. Stabilizing plate; 12. Anti-slip pad. Detailed implementation

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-4 , the modular atomic force microscope includes a base 1. The bottom surface of the base 1 is fixedly connected with an anti-slip seat 8, and the front surface of the base 1 is fixedly connected with an operation panel 7. The anti-slip seat 8 can effectively increase the friction between the bottom surface of the base 1 and the tabletop, improve the stability of the microscope during placement, and effectively prevent the microscope from shaking on the tabletop due to external forces.

[0026] The bottom surface of the anti-slip seat 8 is provided with anti-slip patterns, which can further increase the friction between the bottom surface of the anti-slip seat 8 and the tabletop, and improve the stability of the microscope during operation.

[0027] The front surface of the operation panel 7 is engraved with the correct operation method, and the staff can read the operation method and quickly master the correct operation method, effectively avoiding damage to the microscope due to improper operation.

[0028] The upper surface of the base 1 is provided with a laser emitter module 10 and a reflecting mirror 9. The right side of the upper surface of the base 1 is provided with an optical microscope module 4, a CCD camera module 5 and a monitor module 6. The middle part of the upper surface of the base 1 is provided with a fixing module 2. The fixing module 2 includes a cavity 206 opened inside the base 1. The back surface of the base 1 is fixedly connected with a servo motor 203. The outer surface of the servo motor 203 is fixedly connected with two stabilizing plates 11. The front surface of the stabilizing plate 11 is fixedly connected with the back surface of the base 1, which can further fix the servo motor 203 and effectively prevent the servo motor 203 from shaking during use, thereby avoiding affecting the normal use of the servo motor 203 due to shaking.

[0029] The output rotating shaft of the servo motor 203 passes through the base 1 and extends into the interior of the base 1. A left - right threaded rod 2011 is fixedly connected to the output rotating shaft of the servo motor 203. A first bearing 2013 is fixedly connected to the middle of the outer surface of the left - right threaded rod 2011. A support plate 2014 is fixedly connected to the outer surface of the first bearing 2013. The bottom surface of the support plate 2014 is fixedly connected to the inner bottom wall of the cavity 206. The support plate 2014 and the first bearing 2013 can support the middle of the left - right threaded rod 2011, improving the stability of the left - right threaded rod 2011 during rotation. At the same time, the first bearing 2013 can limit the left - right threaded rod 2011, effectively preventing the thread ring 204 on the outer surface of the left - right threaded rod 2011 from moving to the other thread surface of the left - right threaded rod 2011, thus avoiding affecting the normal use of the fixing module 2.

[0030] A second bearing 2010 is fixedly embedded in the back surface of the base 1. The output rotating shaft of the servo motor 203 passes through the second bearing 2010 and extends into the interior of the cavity 206. The second bearing 2010 can effectively reduce the friction between the output rotating shaft and the base 1 during the rotation of the servo motor 203, avoiding wear of the output rotating shaft caused by long - term use of the servo motor 203, and thus effectively avoiding affecting the normal use of the servo motor 203 due to wear.

[0031] A third bearing 205 is fixedly connected to the inner wall of the cavity 206. The end of the left - right threaded rod 2011 away from the servo motor 203 is fixedly connected to the inner ring of the third bearing 205. The third bearing 205 can fix the left - right threaded rod 2011 at the end away from the servo motor 203, improving the stability of the left - right threaded rod 2011 during rotation and effectively preventing the left - right threaded rod 2011 from swinging due to centrifugal force during rotation.

[0032] Two thread rings 204 are thread - connected to the two thread surfaces of the left - right threaded rod 2011 respectively. Two movable plates 2012 are fixedly connected to the outer surface of each thread ring 204. Two sliding rods 209 are fixedly connected to the inner wall of the cavity 206. Two sliding rings 208 are slidably connected to the outer surface of each sliding rod 209. The ends of the two groups of movable plates 2012 away from the thread rings 204 are respectively fixedly connected to the outer surfaces of the two groups of sliding rings 208. During the movement of the movable plate 2012, it can drive the sliding ring 208 to slide on the outer surface of the sliding rod 209, so that the movable plate 2012 can slide along the direction of the sliding rod 209, improving the stability of the movable plate 2012 during movement and effectively preventing the movable plate 2012 from being deflected and jammed during movement.

[0033] The upper surface of each movable plate 2012 is fixedly connected with a movable rod 207. Two sets of through grooves 201 are formed in the upper surface of the base 1. The tops of the two movable rods 207 respectively penetrate through the two sets of through grooves 201 and extend to the upper part of the base 1. The upper surfaces of the two movable rods 207 are both fixedly connected with clamping plates 202. Anti-slip pads 12 are fixedly connected to the side surfaces of the two clamping plates 202 close to each other, which can effectively increase the friction between the clamping plates 202 and the sample 3, improve the fixing effect of the clamping plates 202 on the sample 3, and prevent the sample 3 from shaking during the detection process.

[0034] A sample 3 is clamped and fixed between the two clamping plates 202.

[0035] The specific implementation process of the present utility model is as follows: First, place the sample 3 between the two clamping plates 202. The servo motor 203 drives the forward and reverse threaded rod 2011 to rotate. The forward and reverse threaded rod 2011 drives the two screw rings 204 to approach each other. The screw rings 204 drive the two sets of movable plates 2012 and the movable rods 207 to approach each other. The movable rods 207 drive the two clamping plates 202 to approach each other to clamp and fix the sample 3. Then, the CCD camera module 5 detects the sample 3 through the optical microscope module 4. Then, the CCD camera module 5 displays the detection image through the monitor module 6.

[0036] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. Modular atomic force microscope, including a base (1), characterized in that: The upper surface of the base (1) is equipped with a laser emitter module (10) and a mirror (9). On the right side of the upper surface of the base (1), an optical microscope module (4), a CCD camera module (5), and a monitor module (6) are installed. In the middle of the upper surface of the base (1), a fixing module (2) is provided. The fixing module (2) includes a cavity (206) opened in the base (1). The back of the base (1) is fixedly connected to a servo motor (203). The output rotating shaft of the servo motor (203) penetrates the base (1) and extends into the interior of the base (1). The output rotating shaft of the servo motor (203) is fixedly connected to a left - right threaded rod (2011). Both threaded surfaces of the left - right threaded rod (2011) are threadedly connected to a screw ring (204). The outer surface of each screw ring (204) is fixedly connected to two movable plates (2012). The upper surface of each movable plate (2012) is fixedly connected to a movable rod (207). Two groups of through - slots (201) are opened on the upper surface of the base (1). The tops of the two groups of movable rods (207) respectively penetrate the two groups of through - slots (201) and extend to the upper part of the base (1). The upper surfaces of the two groups of movable rods (207) are fixedly connected to clamping plates (202). A sample (3) is clamped and fixed between the two clamping plates (202).

2. The modular atomic force microscope according to claim 1, wherein: A first bearing (2013) is fixedly connected to the middle of the outer surface of the left - right threaded rod (2011). The outer surface of the first bearing (2013) is fixedly connected to a support plate (2014). The bottom surface of the support plate (2014) is fixedly connected to the inner bottom wall of the cavity (206).

3. The modular atomic force microscope according to claim 1, characterized in that: A second bearing (2010) is fixedly embedded in the back of the base (1). The output rotating shaft of the servo motor (203) penetrates the second bearing (2010) and extends into the interior of the cavity (206).

4. The modular atomic force microscope according to claim 1, characterized in that: A third bearing (205) is fixedly connected to the inner wall of the cavity (206). The end of the left - right threaded rod (2011) far from the servo motor (203) is fixedly connected to the inner ring of the third bearing (205).

5. The modular atomic force microscope according to claim 1, characterized in that: Two sliding rods (209) are fixedly connected to the inner wall of the cavity (206). The outer surface of each sliding rod (209) is slidably connected to two sliding rings (208). The ends of the two groups of movable plates (2012) far from the screw rings (204) are respectively fixedly connected to the outer surfaces of the two groups of sliding rings (208).

6. The modular atomic force microscope according to claim 1, characterized in that: Anti - slip pads (12) are fixedly connected to the side surfaces of the two clamping plates (202) close to each other.

7. The modular atomic force microscope according to claim 1, wherein: An anti - slip seat (8) is fixedly connected to the bottom surface of the base (1). An operation plate (7) is fixedly connected to the front of the base (1).

8. The modular atomic force microscope according to claim 1, characterized in that: Two stabilizing plates (11) are fixedly connected to the outer surface of the servo motor (203). The front of the stabilizing plates (11) is fixedly connected to the back of the base (1).

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