阅读说明：本技术 一种电化学实验平台微探针的夹持与固定装置 (A kind of clamping of electrochemistry experiment bench microprobe and fixed device ) 是由 庄健 王庭凯 廖晓波 闫衡 郑强强 于 2019-07-31 设计创作，主要内容包括：本发明一种电化学实验平台微探针的夹持与固定装置,包括固定模块、夹持模块和电气模块；固定模块包括固定底座；夹持模块包括夹持基座和管帽；夹持基座一侧固定连接在固定底座上,上端设置有两个顶部螺纹孔,下端设置有底部螺纹孔,下部设置有与底部螺纹孔同轴连通的微探针安装孔,顶部螺纹孔与微探针安装孔连通；管帽一端螺纹连接在底部螺纹孔中,管帽与底部螺纹孔之间夹持设置有紧固密封圈；微探针一端安装在微探针安装孔中,另一端经依次套设的紧固密封圈和管帽紧固在夹持基座上；电气模块包括一一对应的螺纹连接在顶部螺纹孔中的电气接头座,一端电连接对应的电气接头座,另一端伸入微探针内的电解液中的Ag/AgCl电极丝。(A kind of clamping of electrochemistry experiment bench microprobe of the present invention and fixed device, including fixed module, self-clamping module and electrical module；Fixed module includes firm banking；Self-clamping module includes gripping base and pipe cap；Gripping base side is fixedly connected on the fixed base, and upper end setting is there are two screw top hole, and lower end is provided with bottom thread hole, and lower part is provided with the microprobe mounting hole with bottom thread hole coaxial communication, and screw top hole is connected to microprobe mounting hole；Pipe cap threaded one end is connected in bottom thread hole, and clamping is provided with fit sealing circle between pipe cap and bottom thread hole；Microprobe one end is mounted in microprobe mounting hole, and fit sealing circle and pipe cap of the other end through being successively arranged are fastened on gripping base；Electrical module includes the electrical connector seat being threaded in screw top hole correspondingly, and one end is electrically connected corresponding electrical connector seat, and the other end protrudes into the Ag/AgCl wire electrode in the electrolyte in microprobe.)

1. a kind of clamping of electrochemistry experiment bench microprobe and fixed device, which is characterized in that including fixed module, clamping mould Block and electrical module；

The fixed module includes the firm banking for connecting piezoelectric ceramic actuator on electrochemistry experiment bench (14) (13)；

The self-clamping module includes gripping base (2) and pipe cap (6)；Gripping base (2) side is fixedly connected on firm banking (13) on, upper end setting is there are two screw top hole, and lower end is provided with bottom thread hole, and lower part is provided with same with bottom thread hole The microprobe mounting hole of axis connection, screw top hole is connected to microprobe mounting hole；Pipe cap (6) threaded one end is connected to bottom spiral shell In pit, clamping is provided with fit sealing circle (7) between pipe cap (6) and bottom thread hole；Microprobe (1) one end is mounted on micro- spy In needle mounting hole, fit sealing circle (7) and pipe cap (6) of the other end through being successively arranged are fastened on gripping base (2)；

The electrical module includes the electrical connector seat and Ag/AgCl wire electrode being arranged in a one-to-one correspondence, electrical connector seat difference It is threaded in screw top hole correspondingly, Ag/AgCl wire electrode one end is electrically connected corresponding electrical connector seat, another End is protruded into the electrolyte in microprobe (1).

2. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that The firm banking (13) includes top panel and side panel, and top panel and the L-shaped plate of side panel are arranged.

3. a kind of clamping of electrochemistry experiment bench microprobe according to claim 2 and fixed device, which is characterized in that The connection through-hole for screw connection piezoelectric ceramic actuator (14) is provided on top panel, centre is provided with piezoelectric ceramics execution Device (14) goes out line three-way hole；Side panel is fixedly connected with gripping base (2).

4. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that It is respectively corresponded on the joint face of firm banking (13) and gripping base (2) and is provided with rectangle magnetic patch.

5. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that Gripping base (2) is arranged in cylindrical body, and cylindrical body extends a rectangle connecting plate for being connected and fixed pedestal to a side lower part (13)。

6. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that Clamping is provided with sealing ring, sealing ring fastening of the Ag/AgCl wire electrode through being arranged between electrical connector seat and screw top hole.

7. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that When two Ag/AgCl wire electrodes are arranged, there is a partition inside microprobe (1), two channels being mutually isolated will be divided into pipe, Two Ag/AgCl wire electrodes are respectively protruding into the electrolyte in two channels.

8. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that The free end of pipe cap (6) is set as radially enlarged boss.

9. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, which is characterized in that The free end of electrical connector seat is in be arranged for bolt shape.

10. a kind of clamping of electrochemistry experiment bench microprobe according to claim 1 and fixed device, feature exist In screw top bottom hole portion passes through interface channel respectively and is connected to microprobe mounting hole upper end.

Technical field

The present invention relates to scanning probe microscopy field, specially a kind of clamping of electrochemistry experiment bench microprobe with Fixed device.

Background technique

Electrochemical Scanning experiment porch is the micro- scanning tools of a kind of sonde-type emerging in recent years, can be divided mainly into and sweeps Ion Conductance Microscope (SCIM), scan-type electrochemical microscope (SECM) and scan-type electrochemical pond microscope (SECCM) are retouched, it can For making the scanning imagery of micro/nano-scale, the electrochemical analysis of the microcosmic points such as metal erosion and micro-nano to object surface appearance The electrochemical deposition of mesostructure.In terms of scanning imagery, which can carry out nothing to tested sample because of it under physiological environment Contact, harmless, nanometer resolution imaging, and be used widely.Meanwhile with the continuous development of technology, flat at this Therefore having derived electrochemical deposition, substance on the basis of platform again and the new application direction such as quantitatively delivering has and widely answers Use prospect.

When experiment porch is scanned experiment, probe need to be reliably fixed on piezoelectric ceramic actuator.Piezoelectric ceramics is held Row device drives probe to move downward, and electrolyte and reference electrode are housed in probe, and when sample and electrolyte contacts, bipolar electrode is returned Road is connected, and the ionic current in circuit is sampled after amplifier amplifies by control system, and current signal is as feedback driving pressure The stopping of electroceramics and return mention.In scanning work, apply the available sample of bias voltage of linear change by control system The VA characteristic curve of chemical reaction, from the nanometer resolution of the available sample surface pattern in the position of piezoelectric ceramics at Picture.The maximum advantage of electrochemistry experiment bench is its contactless scanning probe microscopy.And due to its working principle Unrelated with light, this makes its Measurement Resolution get rid of the constraint of optical diffraction limit.

The microprobe drawn using glass-micropipe, is filled with certain density electrolyte, is used to form ion-conductance Stream, fixed point deliver the support container of substance.Thus, as the important component of Electrochemical Scanning experiment porch, microprobe Clamping and fixation are of crucial importance.Such microprobe is reliably fixed in the device on piezoelectric ceramic actuator currently, still lacking.This Outside, the detection part of electrochemistry experiment bench is normally located in shielded box, due to narrow space in shielding case body, therefore probe Clamping should be as simple and easy to do as possible with fixed form, does not destroy probe.

In scanning work, the movement of piezoelectric ceramics needs the Real-time Feedback of electrolyte ion current signal.Therefore, it obtains Electrolyte ion current signal is taken to be particularly important.Currently, the scanning mode of Electrochemical Scanning platform generally can be divided into list Pipe scanning mode and two-tube scanning mode.Microprobe used in single tube scanning mode is single channel, micro- spy used in two-tube scanning mode Needle is binary channels, i.e., two channels are respectively provided with electrolyte in probe, mutually isolated.Different scanning modes requires to obtain in probe The mode of electrolyte ion current signal has certain applicability, and guarantees when carrying out two-tube scanning mode, two channels from Electron current signal will not generate interference, independent mutually.

Summary of the invention

Aiming at the problems existing in the prior art, the present invention provides a kind of clamping of electrochemistry experiment bench microprobe and consolidates Determine device, structure is simple, and rationally, in the Electrochemical Scanning experiment porch course of work, device being capable of the micro- spy of reliable retention for design Needle, and be fixed on piezoelectric ceramic actuator, facilitate and obtain microprobe electrolyte inside ion current signal, single tube is supported to sweep Retouch mode and two-tube scanning mode.

The present invention is to be achieved through the following technical solutions:

A kind of clamping of electrochemistry experiment bench microprobe and fixed device, including fixed module, self-clamping module and electrical Module；

The fixed module includes the firm banking for connecting piezoelectric ceramic actuator on electrochemistry experiment bench；

The self-clamping module includes gripping base and pipe cap；Gripping base side is fixedly connected on the fixed base, on End setting is there are two screw top hole, and lower end is provided with bottom thread hole, and lower part is provided with and bottom thread hole coaxial communication Microprobe mounting hole, screw top hole are connected to microprobe mounting hole；Pipe cap threaded one end is connected in bottom thread hole, pipe cap Clamping is provided with fit sealing circle between bottom thread hole；Microprobe one end is mounted in microprobe mounting hole, other end warp The fit sealing circle and pipe cap being successively arranged are fastened on gripping base；

The electrical module includes the electrical connector seat and Ag/AgCl wire electrode being arranged in a one-to-one correspondence, electrical connector seat It being threaded in screw top hole correspondingly respectively, Ag/AgCl wire electrode one end is electrically connected corresponding electrical connector seat, The other end protrudes into the electrolyte in microprobe.

Preferably, the firm banking includes top panel and side panel, and top panel and the L-shaped plate of side panel are arranged.

Further, the connection through-hole for screw connection piezoelectric ceramic actuator is provided on top panel, centre is provided with Piezoelectric ceramic actuator goes out line three-way hole；Side panel is fixedly connected with gripping base.

Preferably, it is respectively corresponded on the joint face of firm banking and gripping base and is provided with rectangle magnetic patch.

Preferably, gripping base is arranged in cylindrical body, and cylindrical body extends a rectangle connecting plate to a side lower part and is used for It is connected and fixed pedestal.

Preferably, clamping is provided with sealing ring between electrical connector seat and screw top hole, and Ag/AgCl wire electrode is through being arranged Sealing ring fastening.

Preferably, when two Ag/AgCl wire electrodes are arranged, have a partition inside microprobe, will be divided into pipe two mutually The channel being isolated, two Ag/AgCl wire electrodes are respectively protruding into the electrolyte in two channels.

Preferably, the free end of pipe cap is set as radially enlarged boss.

Preferably, the free end of electrical connector seat is in be arranged for bolt shape.

Preferably, screw top bottom hole portion passes through interface channel respectively and is connected to microprobe mounting hole upper end.

Compared with prior art, the invention has the following beneficial technical effects:

Electrochemical Scanning experiment porch microprobe clamping of the invention is with fixed device with compact-sized, integrated level is high Feature realizes being reliably fixed between microprobe and piezoelectric ceramic actuator, and assembles and disassembles simplicity, can obtain microprobe in real time Electrolyte inside ion current signal, and single tube and two-tube two kinds of scanning modes are supported simultaneously.The device sweeps optimization electrochemistry Experiment porch structure is retouched to play a significant role.

Detailed description of the invention

Fig. 1 is the three dimensional structure diagram of the clamping of Electrochemical Scanning experiment porch microprobe with fixed device.

Fig. 2 is the schematic three dimensional views of self-clamping module.

Fig. 3 a is the main view of self-clamping module and electrical module.

Fig. 3 b is the A-A cross-sectional view of Fig. 3 a.

Fig. 4 is the partial enlarged view for carrying out two-tube scanning mode electrical module.

Fig. 5 is the schematic three dimensional views of fixed module.

Fig. 6 is the main view of fixed module

Fig. 6 b is the A-A cross-sectional view of Fig. 6 a.

In figure: 1-microprobe；2-gripping bases；3-the one Ag/AgCl wire electrode；4-the first sealing ring；5-the first Electrical connector seat；6-pipe caps；7-fit sealing circles；8-the two Ag/AgCl wire electrode；9-the second sealing ring；10-the second Electrical connector seat；11-the first rectangle magnetic patch；12-the second rectangle magnetic patch；13-firm bankings；14-piezoelectric ceramics are held Row device；15-screws.

Specific embodiment

Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and It is not to limit.

A kind of clamping of electrochemistry experiment bench microprobe of the present invention and fixed device, for micro-nano field topography scan, The glass microprobe of electrochemical analysis and electrodeposition substance experiment porch is clamped and is fixed；Including clamp microprobe self-clamping module, The electrical module of the fixed module and acquisition electrolyte ion current signal that are connected with piezoelectric ceramic actuator is constituted.

Self-clamping module includes gripping base 2, the pipe cap 6 being connected by screw thread with 2 lower end of gripping base, is mounted on clamping base The fit sealing circle 7 that 2 inside of seat connects with pipe cap 6.One bottom thread hole is arranged at 2 bottom of gripping base, inside there is screw thread, with pipe cap 6 Connect.Hole is lined with the fit sealing circle 7 to connect with pipe cap 6, supports to be additionally provided with inside pedestal 2 coaxial with bottom thread hole Microprobe mounting hole.When in use, microprobe 1 is inserted into microprobe mounting hole from the bottom thread hole of gripping base 2, tightens pipe cap 6, microprobe 1 is clamped to the extruding of fit sealing circle 7 by pipe cap 6, realizes the reliable retention to microprobe 1.

Fixed module includes first and second of firm banking 13 and two pieces respectively in gripping base 2 and firm banking 13 Rectangle magnetic patch 11,12.Gripping base 2 and firm banking 13 have a rectangular slot, are respectively embedded with one piece of rectangle magnetic patch.It is fixed There are four through-hole on pedestal 13, there are corresponding four threaded holes on piezoelectric ceramic actuator 14, being connected by screw to can will consolidate Determine pedestal 13 to be fixed on piezoelectric ceramic actuator 14.When in use, firm banking 13 is fixed on piezoelectric ceramics by screw On actuator 14, the magnetic force between rectangle magnetic patch being embedded with by gripping base 2 and firm banking 13 can will accompany micro- spy The gripping base 2 of needle 1 connects with firm banking 13, realizes the fixation between microprobe 1 and piezoelectric ceramic actuator 14.Due to The automatic aligning characteristic of magnet magnetic force keeps the assembly and disassembly between firm banking and gripping base easy.

Electrical module includes the electrical connector seat being connected by screw thread with 2 upper end of gripping base, is mounted in gripping base 2 Sealing ring that portion connects with electrical connector seat, the Ag/AgCl wire electrode to connect with electrical connector seat are constituted.It is electrical connector seat, close Seal and Ag/AgCl wire electrode are pairs of.There are two symmetrical screw top holes at the top of gripping base 2, with bottom thread Hole communicates, and inside has screw thread, connects with electrical connector seat.Screw top hole is lined with the sealing ring to connect with electrical connector seat, Ag/ AgCl wire electrode is passed through out of sealing collar aperture, tightens electrical connector seat, will by the squeezing action of electrical connector seat and sealing ring Ag/AgCl wire electrode is fixed.Ag/AgCl wire electrode one end connects and fixes with electrical connector seat, and the other end is under gripping base 2 It is pierced by the hole of end pipe cap 6.Electrical connector seat uses and forms access between conductive material, with Ag/AgCl wire electrode.It is using When, Ag/AgCl wire electrode is inserted into microprobe 1 in electrolyte, shape between electrolyte, Ag/AgCl wire electrode and electrical connector seat At access, ion current signal in electrolyte can be drawn from electrical connector seat 10.If using two-tube scanning mode, then Two Ag/AgCl wire electrodes need to be inserted into two channels of microprobe respectively, be mutually isolated.

Specifically, as shown in Figure 1, Figure 2, Fig. 5, of the present invention is a kind of microprobe for Electrochemical Scanning experiment porch Clamping and fixed device, are made of self-clamping module, fixed module and electrical module.

Fig. 2, Fig. 3 a and Fig. 3 b describe the implementation structure of self-clamping module and electrical module.One bottom is arranged at 2 bottom of gripping base Portion's threaded hole is connected with pipe cap 6, and a pair of of screw top hole is arranged at top, is connected with the first and second electrical connector seat 5,10, and three Hole communicates.2 cylindrical body of gripping base extends a plane to side, and plane digging has a rectangular slot, rectangular to inlay first Shape magnetic patch 11.2 bottom thread hole of gripping base is lined with the fit sealing circle 7 to connect with pipe cap 6, and microprobe 1 can be close from fastening Insertion microprobe mounting hole is passed through in 7 interstitial hole of seal.Pipe cap 6 is tightened, pipe cap 6 squeezes fit sealing circle 7, makes fit sealing circle 7 median pore radius become smaller, and squeeze probe 1 and clamp.There is screw thread in 6 upper end of pipe cap, is connected with gripping base 2, and lower end is a boss, Facilitate holding.There is a through-hole inside pipe cap 6, the first and second Ag/AgCl wire electrode 3,8 is pierced by from top to bottom.When in use, by One, in two channels arranged side by side being relatively isolated of two Ag/AgCl wire electrodes 3,8 insertion probe 1, the then insertion tube from bottom to top of probe 1 Cap 6, pipe cap 6 are screwed into gripping base 2 and tighten, and realize the reliable retention of probe 1.In 2 top pair threaded hole of gripping base It is lined with the first and second sealing ring 4,9 to connect with electrical connector seat, there are a hole, the first and second Ag/ in 4,9 middle part of the first and second sealing ring AgCl wire electrode 3,8 passes therethrough.First and second Ag/AgCl wire electrode 3,8 one end are pierced by from bottom pipe cap 6, and one end is clipped in Between first and second electrical connector seat 5,10 and the first and second sealing ring 4,9, the first and second electrical connector seat 5,10 is tightened, first and second Electrical connector seat 5,10 and the first and second sealing ring 4,9 squeeze the first and second Ag/AgCl wire electrode 3,8 and realize fixation.First and second electricity Gas plinth 5,10 is bolt shape, and there is screw thread in lower end, is connected with gripping base 2, and upper end is hexagonal nut, is conveniently tightened, One groove is arranged at top, can connecting wire connector ion current signal is exported.First and second electrical connector seat 5,10 is whole with conductive Material is made, and forms access between the first and second Ag/AgCl wire electrode 3,8.The insertion of first and second Ag/AgCl wire electrode 3,8 is micro- In 1 electrolyte of probe, ion current signal is conducted by the first and second Ag/AgCl wire electrode 3,8 to the first and second electrical connector seat 5,10, it is exported using conducting wire.

When Fig. 4 describes Electrochemical Scanning experiment porch progress two-tube scanning mode, the first and second Ag/AgCl wire electrode 3,8 And the combination situation of microprobe 1.There is a partition inside microprobe 1 used in two-tube scanning mode, two channels will be divided into pipe, Two channels are mutually isolated.Electrolyte is injected to two-tube two channel of probe, the first and second Ag/AgCl wire electrode 3,8 is inserted into two-tube respectively Microprobe 1 is inserted into gripping base 2 to top by probe partition two sides, and the first and second Ag/AgCl wire electrode 3,8 is mutually isolated, point It Huo Qu not ion current signal in two channel of probe.Pipe cap 6 is tightened, 1 reliable retention of microprobe is made, next step behaviour can be carried out Make.

Fig. 5, Fig. 6 a and Fig. 6 b describe the implementation structure of fixed module.Firm banking 13 is " L " template, top surface quadrangle Symmetrical there are four small through hole, connect for screw, centre has one compared with large through-hole, facilitates piezoelectric ceramic actuator wiring, side Panel has a rectangular slot, to inlay the second rectangle magnetic stripe 12.There are corresponding four threaded holes on piezoelectric ceramic actuator 14, By four screws 15, firm banking 13 is fixed on piezoelectric ceramics.Inlay the second rectangle magnetic patch in 13 side of firm banking 12, it is corresponding that the first rectangle magnetic patch 11 is inlayed with 2 side of gripping base, by magnetic patch magneticaction, firm banking and clamping Pedestal is connected.

Equipped with Electrochemical Scanning experiment porch of the invention, the canonical process when being tested is as follows:

When being tested using Electrochemical Scanning experiment porch, by four screws, firm banking is fixed on piezoelectricity On ceramic actuator.The solion that debita spissitudo is injected in the glass microprobe drawn to glass-micropipe, by two Ag/AgCl Wire electrode is inserted into microprobe that (according to two-tube scanning mode, then two Ag/AgCl wire electrodes need to be inserted into microprobe respectively respectively In two channels).Then microprobe is passed through into pipe cap interstitial hole, is inserted into top from gripping base base apertures.Tighten pipe cap, pipe cap Squeezing fit sealing circle makes ring inner hole diameter become smaller, and squeezes probe and clamps.It finally relies on embedded in gripping base and fixed bottom The magneticaction of magnetic patch, firm banking is mutually fixed with gripping base between seat.After completing above-mentioned steps, microprobe is realized It clamps and fixed, while ion current signal in probe can be obtained in real time during the experiment.

Electrochemical Scanning experiment porch microprobe provided by the invention clamping and fixture structure are compact, integrated level is high Feature realizes being reliably fixed between microprobe and piezoelectric ceramic actuator, and assembles and disassembles simplicity, can obtain microprobe in real time Electrolyte inside ion current signal, and single tube and two-tube two kinds of scanning modes are supported simultaneously.The present invention is a kind of leading to for microprobe With clamping and fixed device, Electrochemical Scanning experiment porch can be used to, can also expand and adapt to remaining each field direction.