CN104483512B - Scanning tunneling microscope needle point corrosion instrument - Google Patents
Scanning tunneling microscope needle point corrosion instrument Download PDFInfo
- Publication number
- CN104483512B CN104483512B CN201410836854.3A CN201410836854A CN104483512B CN 104483512 B CN104483512 B CN 104483512B CN 201410836854 A CN201410836854 A CN 201410836854A CN 104483512 B CN104483512 B CN 104483512B
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- knob
- fixed
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a scanning tunneling microscope needle point corrosion instrument which comprises a mechanical component, a working circuit and a control power source. The control power source comprises a control circuit and a control panel. The control circuit comprises a voltage regulating and stabilizing module, a voltage measuring module, a current measuring module, a threshold value setting module, a sampling comparison module and a voltage output module. A sampling resistor R2 adopted by the voltage regulating and stabilizing module is located at a high-potential position, and an LM319 type comparator is adopted by the sampling comparison module. Due to the facts that a sampling resistor in a control circuit of an original needle point corrosion instrument is moved away from a whole load voltage collecting system according to the design control circuit of the scanning tunneling microscope needle point corrosion instrument, and the sampling resistor is changed to be located at the high-potential position, real-time current can be precisely measured, constant-voltage output at the two ends of a load resistor is guaranteed, current is gradually reduced along with increasing of load resistance, single-parameter changing is easy to control and analyze, stability in the corrosion process is improved, and the manufacturing successful rate of needle points is improved.
Description
Technical field
The present invention relates to a kind of needle tip of scanning tunnel microscope producing device, particularly a kind of needle tip of scanning tunnel microscope
Corrosion tester.
Background technology
PSTM (stm) is a kind of very high study of surfaces instrument of resolution, and it makes people's first time in reality
Spatially observe atom.In recent years, along with the development of Surface Science, it is widely used, and be increasingly becoming solidifying
Poly- state and the research meanses of surface physics laboratory indispensability.As the part with research surface directly contact, needle point is each in stm
Extremely important role is played in ingredient.To most stm experiment for, conventional tip point material be tungsten w or
Platinoiridita pt-ir, the quality of needle point directly influences the resolution of stm.
Due to the demand to high-quality needle point for the scanning probe microscopy, a variety of methods are used for probe manufacturing.Wherein,
Convenient and economical is needle point manufacturing technology that is theoretical based on electrochemical corrosion and developed.Electrochemical method corrodes needle point,
AC and DC can be divided into corrode two kinds of different approach, the needle point profile that it obtains is similar to parabolic type and hyperbolic type.Phase
Comparatively, the bubble that DC corrosion process produces only occurs in negative electrode, typically will not cause anode liquid level fluctuation thus more
Added with profit, it is often used in the making of tungsten (w) needle point.In DC corrosion, a kind of the most frequently used technology is exactly that direct current breaks the method that falls.Should
In method, among needle point immersion solution, it is formed about thinner cervical region final fracture in liquid level, the top half of tungsten filament is formed
Required needle point.The major defect of this method is, if can not timely cut off circuit and will continue to react and lead to needle point
Rust is it is therefore desirable to design a kind of Circuits System automatically powering off to meet its requirement.Electricity designed by traditional needle point corrosion tester
The corrosion potentials of road system, load resistance and corrosion current are intended to change, the uncertainty of multiple response parameters and continue
Change can increase the difficulty of experiment control, leads to the unstability of experimental result, reduces the success rate that needle point makes.
Content of the invention
For solving the problems referred to above that prior art exists, the present invention will design one kind and voltage in corrosion process can be overcome to become
Change, improve the needle tip of scanning tunnel microscope corrosion tester that needle point is fabricated to power.
To achieve these goals, technical scheme is as follows: a kind of needle tip of scanning tunnel microscope corrosion tester, bag
Include mechanical component, operating circuit and control power supply.
Described mechanical component includes base, support, Shang Gai, top cover knob, copper sheathing a, threaded rod, pointer, lifting fixation
Block, anode electrode bar, fixed knob, electrode fixing end, three-jaw fixture a, knob, three-jaw fixture b, negative electricity pole bar, disk, electricity
Polar ring, beaker and copper sheathing b.
Described base is fixed using mode connects for screw with support, disk respectively, plays overall supporting role；Described upper lid with
Support is fixed using mode connects for screw；Described threaded rod two ends are coordinated with copper sheathing a and copper sheathing b gap respectively, and copper sheathing a and copper sheathing b divides
It is not fixed on lid and bottom seat；Described top cover knob is marked with scale, is fastenedly connected with threaded rod using screw；Described pointer
It is fixed by screws in and covers, the scale on its cooperation top cover knob determines the anglec of rotation of top cover knob.Described electrode is solid
Fixed end is fixed by screws on lifting fixed block, coordinates for screw thread, anode electrode bar between fixed knob and electrode fixing end
It is fixed in electrode fixing end by fixed knob；Described three-jaw fixture a and three-jaw fixture b is fixed by screws in anode respectively
On electrode stem, three-jaw fixture a and three-jaw fixture b is by tungsten filament vertical clamping；Described negative electricity pole bar is fixed on base using screw
On, knob is coordinated with negative electricity pole bar screw thread, and electrode retaining collar is fixedly clamped in negative electricity pole bar rotary knob；Described disk is adopted
Be screwed on base, the beaker filling etchant solution is placed among the circular hole of disk, electrode retaining collar submerge beaker contained molten
Below liquid liquid level.
Described operating circuit includes anode electrode bar, electrode fixing end, three-jaw fixture a, knob, three-jaw fixture b, negative pole
Electrode stem, disk, electrode retaining collar and beaker.Electrode fixing end connects positive source by electric wire, and electric current is by with electrode fixing end even
The anode electrode bar connecing is transmitted to the tungsten filament clamped by three-jaw fixture a and three-jaw fixture b；Described negative electricity pole bar connects power supply and bears
Pole, and be connected by screw with electrode retaining collar；Tungsten filament clamped by three-jaw fixture a and three-jaw fixture b and electrode retaining collar are co-located on burning
In the etchant solution contained of cup but be not directly contacted with, during energising, tungsten filament occurs cell reaction so that circuit is constituted back in etchant solution
Road.
Described control power supply includes control circuit and control panel.Described control circuit includes voltage-regulation voltage-stabilization module, electricity
Pressure measurement module, current measurement module, threshold value setting module, sampling comparison module, differential comparison module and voltage output module,
Described voltage-regulation voltage-stabilization module is connected with voltage measurement module and current measurement module respectively, described voltage measurement module also with
Voltage output module connects；Described voltage output module pass through to switch k1b respectively with sampling comparison module and differential comparison mould
Block connects；Described sampling comparison module is connected with current measurement module after threshold value setting module, switch k1c, described difference
The other end dividing comparison module is connected with current measurement module after switch k1c.Described voltage-regulation voltage-stabilization module sampling used electricity
Resistance r2 is located at high potential, and described sampling comparison module adopts lm319 type comparator.
Described voltage-regulation voltage-stabilization module exports 0～10v DC voltage by rheostat rt1, and output voltage passes through p1 interface
Connect load, i.e. the both positive and negative polarity of needle point corrosion tester.
Described voltage measurement module collection load voltage, the processing module being then internally integrated by p2 interface external power supply
Actual load voltage is shown on control panel.
Described current measurement module gathers the voltage at sampling resistor r2 two ends, then by collection inside p3 interface external power supply
The processing module becoming obtains being corrosion current by the electric current of sampling resistor r2 and being shown on control panel.
Described control panel is one piece and is located at the touch screen controlling outer casing of power supply front centre position, and control panel sets
It is equipped with voltage and set voltage, current monitoring current, failure of current threshold value setting threshold, difference setting
Differential, tip height adjust monitoring tipadj, mode of operation and switch display box.
The top cover knob of the present invention is marked with scale, is fastenedly connected with threaded rod using screw, rotating cap rotation during work
Button can make connected threaded rod rotation together, so that the lifting fixed block lifting with the cooperation of threaded rod screw thread；Rotation
Top cover knob makes threaded rod rotate, so that moving up and down with the lifting fixed block of threaded rod screw thread cooperation, such that it is able to adjust
Tungsten filament immerses the length of the contained solution of beaker.Tipadj display box on touch operation panel before adjustment tungsten filament length, works as tungsten filament
Just during contact liquid level tipadj power source internal buzzer buzzing prompting, observe scale on lid knob afterwards again to adjust tungsten filament
The length of immersed in liquid level；After adjusting tungsten filament length, touch voltage sets voltage and failure of current threshold value sets
Threshold display box come to set corrosion potentials and cut-out electric current；In corrosion process, current monitoring current display box is permissible
Show the size variation of corrosion current in real time.
During present invention work, the operation principle of each module is as follows:
Voltage-regulation voltage-stabilization module exports 0～10v DC voltage by rheostat rt1, and this magnitude of voltage is default load voltage, this
Invention predeterminated voltage when using is typically set to 4～10v, and output voltage connects load by p1 interface, and that is, needle point corrosion tester is being just
Negative pole.Rheostat rt1 can be controlled to adjust default load voltage by voltage option on touch screen.
Voltage measurement module gathers load voltage, and the processing module being then internally integrated by p2 interface external power supply is by reality
Load voltage then appear as the value of touch screen voltage (touch screen voltage option adjust default load before having reaction concurrently
Voltage and the function of course of reaction display actual load voltage), because the position that this circuit changes sampling resistor r2 makes reality
Load voltage in the course of reaction of border is sufficiently stable, is substantially equal to predeterminated voltage it is possible to see during the course of the reaction
The value of voltage is only in some fluctuations up and down instantaneously having within 0.02v.
Current measurement module gathers the voltage at sampling resistor r2 two ends, by be then internally integrated by p3 interface external power supply
It is corrosion current the value being shown as touch screen current that processing module obtains by the electric current of r2, it is achieved thereby that corrosion electricity
The real-time display of stream.
Threshold value setting module and sampling comparison module: when corrosion tester mode of operation is adjusted to by thr. mould by Touch Screen
During formula, in circuit, threshold value setting module and sampling comparison module are linked in circuit, by adjusting threshold choosing on touch screen
The value of item to change the size of default cut-out electric current to control threshold value setting module rheostat rt2；Sampling comparison module collection is logical
The electric current of over-sampling resistance r2 is the size of actual corrosion current and then is compared with default cut-out electric current by comparator ic2b
Relatively, if actual corrosion current is less than default cut-out electric current, the triode q1 of p1 seam series connection closes, and will load from circuit
Cut-out, that is, needle point corrosion tester quits work.
Differential comparison module: when corrosion tester mode of operation is adjusted to by diff. pattern by touch screen, sample in circuit
Comparison module and threshold value setting module cut off from circuit, and difference block accesses in circuit.By adjusting on touch screen
The value of differential to change the big of electric capacity c5 right-hand member preset voltage value to control rheostat rt3 in differential comparison module
Little, thus changing the sensitivity of differential comparison module；It is that tungsten filament breaks the moment that falls when the moment that needle point corrosion terminates, corrosion current meeting
There is a larger saltus step of ratio, and differential comparison module can judge the size of corrosion current saltus step, when the size of saltus step is more than one
When definite value, then the triode q1 of p1 seam series connection closes, and will load cut-out from circuit, and that is, needle point corrosion tester stops work
Make.
After setting corrosion parameter, touch " on " on touch screen, corrosion tester is started working, and " on " is changed into
" off ", touch-control can be by corrosion tester work stopping again.
Compared with prior art, the present invention has a following improvement effect:
1st, due to control circuit designed by the present invention by the sampling resistor in conventional needle point corrosion tester control circuit from whole
Remove in load voltage acquisition system, change at the high potential as shown in r2 in Fig. 2, can be with accurate measurement by such mode
Real-time current, the constant voltage output at proof load resistance two ends simultaneously.Designed control circuit gives electricity with modular method
The concrete function of road system components and the program of work.Actual corrosion potentials are constant, electric current with load resistance increase and
It is gradually reduced, the change of such Radix Salviae Miltiorrhizae amount is easily controlled and analyzes, and enhances the stability of corrosion process, thus improve
The success rate that needle point makes.
2nd, the design of contact panel of the present invention, shows that corrosion potentials, circuital current, cut-off current, tip height are adjusted in real time
The parameters such as section, easy to operate.
3rd, the control circuit of the present invention adopts lm319 type comparator, is swift in response, can judge within 200ns,
Improve the speed of circuit judges and action.
Brief description
The present invention has 3, accompanying drawing, wherein:
Fig. 1 is the mechanical part general assembly drawing of the present invention.
Fig. 2 is the control circuit schematic diagram of the present invention.
Fig. 3 is the guidance panel schematic diagram of the present invention.
In figure: 1, base；2nd, support；3rd, Shang Gai；4th, top cover knob；5th, copper sheathing；6th, threaded rod；7th, pointer；8th, lift admittedly
Determine block；9th, anode electrode bar；10th, fixed knob；11st, electrode fixing end；12nd, three-jaw fixture a；13rd, knob；14th, three-jaw fixture
b；15th, negative electricity pole bar；16th, disk；17th, electrode retaining collar；18th, beaker；19th, copper sheathing b.
Specific embodiment
Purpose, technical scheme and advantage for making embodiments of the invention are clearer, with reference to the embodiment of the present invention
In accompanying drawing, clearly complete description is carried out to the technical scheme in the embodiment of the present invention.
As Figure 1-3, a kind of needle tip of scanning tunnel microscope corrosion tester, including mechanical component, operating circuit and control
Power supply.
Described mechanical component includes base 1, support 2, upper lid 3, top cover knob 4, copper sheathing a5, threaded rod 6, pointer 7, rises
Fall fixed block 8, anode electrode bar 9, fixed knob 10, electrode fixing end 11, three-jaw fixture a12, knob 13, three-jaw fixture b14,
Negative electricity pole bar 15, disk 16, electrode retaining collar 17, beaker 18 and copper sheathing b19.
Described base 1 is fixed using mode connects for screw with support 2, disk 16 respectively, plays overall supporting role；On described
Lid 3 is fixed using mode connects for screw with support 2；Described threaded rod 6 two ends are coordinated with copper sheathing a5 and copper sheathing b19 gap respectively, copper sheathing
A5 and copper sheathing b19 is separately fixed on lid 3 and base 1；Described top cover knob 4 is marked with scale, using screw and threaded rod 6
It is fastenedly connected；Described pointer 7 is fixed by screws on lid 3, and the scale on its cooperation top cover knob 4 determines top cover knob 4
The anglec of rotation.Described electrode fixing end 11 is fixed by screws on lifting fixed block 8, fixed knob 10 and electrode fixing end
Coordinate for screw thread between 11, anode electrode bar 9 is fixed in electrode fixing end 11 by fixed knob 10；Described three-jaw fixture
A12 and three-jaw fixture b14 is fixed by screws on anode electrode bar 9 respectively, and three-jaw fixture a12 and three-jaw fixture b14 is by tungsten
Silk vertical clamping；Described negative electricity pole bar 15 is fixed on base 1 using screw, and knob 13 is joined with negative electricity pole bar 15 screw thread
Close, electrode retaining collar 17 is fixedly clamped in negative electricity pole bar 15 rotary knob 13；Described disk 16 is fixed on base 1 using screw
On, the beaker 18 filling etchant solution is placed among the circular hole of disk 16, electrode retaining collar 17 submerge the contained liquid level of solution of beaker 18 with
Under.
Described operating circuit includes anode electrode bar 9, electrode fixing end 11, three-jaw fixture a12, knob 13, three-jaw card
Tool b14, negative electricity pole bar 15, disk 16, electrode retaining collar 17 and beaker 18.Electrode fixing end 11 connects positive source by electric wire, electricity
Stream is transmitted to the tungsten clamped by three-jaw fixture a12 and three-jaw fixture b14 by the anode electrode bar 9 being connected with electrode fixing end 11
Silk；Described negative electricity pole bar 15 connects power cathode, and is connected by screw with electrode retaining collar 17；Three-jaw fixture a12 and three-jaw fixture
Tungsten filament clamped by b14 is co-located in the etchant solution that beaker 18 is contained with electrode retaining collar 17 but is not directly contacted with, tungsten during energising
Silk occurs cell reaction to make circuit constitute loop in etchant solution.
Described control power supply includes control circuit and control panel.Described control circuit includes voltage-regulation voltage-stabilization module, electricity
Pressure measurement module, current measurement module, threshold value setting module, sampling comparison module, differential comparison module and voltage output module,
Described voltage-regulation voltage-stabilization module is connected with voltage measurement module and current measurement module respectively, described voltage measurement module also with
Voltage output module connects；Described voltage output module pass through to switch k1b respectively with sampling comparison module and differential comparison mould
Block connects；Described sampling comparison module is connected with current measurement module after threshold value setting module, switch k1c, described difference
The other end dividing comparison module is connected with current measurement module after switch k1c.Described voltage-regulation voltage-stabilization module sampling used electricity
Resistance r2 is located at high potential, and described sampling comparison module adopts lm319 type comparator.
Described voltage-regulation voltage-stabilization module exports 0～10v DC voltage by rheostat rt1, and output voltage passes through p1 interface
Connect load, i.e. the both positive and negative polarity of needle point corrosion tester.
Described voltage measurement module collection load voltage, the processing module being then internally integrated by p2 interface external power supply
Actual load voltage is shown on control panel.
Described current measurement module gathers the voltage at sampling resistor r2 two ends, then by collection inside p3 interface external power supply
The processing module becoming obtains being corrosion current by the electric current of sampling resistor r2 and being shown on control panel.
Described control panel is one piece and is located at the touch screen controlling outer casing of power supply front centre position, and control panel sets
It is equipped with voltage and set voltage, current monitoring current, failure of current threshold value setting threshold, difference setting
Differential, tip height adjust monitoring tipadj, mode of operation and switch display box.
The tungsten filament of the present invention immerses and following cell reaction occurs after switching on power among etchant solution:
Anode: w+8oh-→wo4 2-+4h2o+6e-
Negative electrode: 6h2o+6e-→3h2+6oh-
Overall reaction: w+2oh-+2h2o→wo4 2-+3h2
Tungsten filament is formed about thinner cervical region final fracture due to occurring cell reaction to be consumed in liquid level, tungsten filament upper
Half part forms required needle point.
Claims (1)
1. a kind of needle tip of scanning tunnel microscope corrosion tester it is characterised in that: include mechanical component, operating circuit and control electricity
Source；
Described mechanical component include base (1), support (2), upper lid (3), top cover knob (4), copper sheathing a (5), threaded rod (6),
Pointer (7), lifting fixed block (8), anode electrode bar (9), fixed knob (10), electrode fixing end (11), three-jaw fixture a
(12), knob (13), three-jaw fixture b (14), negative electricity pole bar (15), disk (16), electrode retaining collar (17), beaker (18) and copper sheathing
b(19)；
Described base (1) is fixed using mode connects for screw with support (2), disk (16) respectively, plays overall supporting role；Described
Upper lid (3) and support (2) are fixed using mode connects for screw；Described threaded rod (6) two ends are respectively and between copper sheathing a (5) and copper sheathing b (19)
Gap coordinates, and copper sheathing a (5) and copper sheathing b (19) is separately fixed on lid (3) and base (1)；Described top cover knob (4) is marked with
Scale, is fastenedly connected with threaded rod (6) using screw；Described pointer (7) is fixed by screws on lid (3), its cooperation top
Scale on lid knob (4) determines the anglec of rotation of top cover knob (4)；Described electrode fixing end (11) is fixed by screws in liter
In fall fixed block (8), coordinate for screw thread between fixed knob (10) and electrode fixing end (11), anode electrode bar (9) passes through solid
Determine knob (10) to be fixed in electrode fixing end (11)；Described three-jaw fixture a (12) and three-jaw fixture b (14) pass through screw respectively
It is fixed on anode electrode bar (9), three-jaw fixture a (12) and three-jaw fixture b (14) are by tungsten filament vertical clamping；Described negative electrode
Bar (15) is fixed on base (1) using screw, and knob (13) is coordinated with negative electricity pole bar (15) screw thread, and rotary knob (13) will
Electrode retaining collar (17) is fixedly clamped in negative electricity pole bar (15)；Described disk (16) is fixed on base (1) using screw, fills
The beaker (18) of etchant solution is placed among the circular hole of disk (16), electrode retaining collar (17) submerge the contained liquid level of solution of beaker (18) with
Under；
Described operating circuit include anode electrode bar (9), electrode fixing end (11), three-jaw fixture a (12), knob (13), three
Pawl fixture b (14), negative electricity pole bar (15), disk (16), electrode retaining collar (17) and beaker (18)；Electrode fixing end (11) passes through electricity
Line connects positive source, electric current by the anode electrode bar (9) being connected with electrode fixing end (11) be transmitted to three-jaw fixture a (12) and
Tungsten filament clamped by three-jaw fixture b (14)；Described negative electricity pole bar (15) connects power cathode, and passes through screw with electrode retaining collar (17)
Connect；Tungsten filament clamped by three-jaw fixture a (12) and three-jaw fixture b (14) and electrode retaining collar (17) are co-located on beaker (18) and are contained
Etchant solution in but be not directly contacted with, during energising tungsten filament occur in etchant solution cell reaction make circuit constitute loop；
Described control power supply includes control circuit and control panel.Described control circuit includes voltage-regulation voltage-stabilization module, voltage is surveyed
Amount module, current measurement module, threshold value setting module, sampling comparison module, differential comparison module and voltage output module, described
Voltage-regulation voltage-stabilization module be connected with voltage measurement module and current measurement module respectively, described voltage measurement module also with voltage
Output module connects；Described voltage output module is passed through switch k1b and is connected with sampling comparison module and differential comparison module respectively
Connect；Described sampling comparison module is connected with current measurement module after threshold value setting module, switch k1c, described differential ratio
It is connected with current measurement module after switch k1c compared with the other end of module；Described sampling resistor r2 used by voltage-regulation voltage-stabilization module
At high potential, described sampling comparison module adopts lm319 type comparator；
Described voltage-regulation voltage-stabilization module exports 0～10v DC voltage by rheostat rt1, and output voltage is connect negative by p1 interface
Carry, i.e. the both positive and negative polarity of needle point corrosion tester；
Described voltage measurement module collection load voltage, the processing module being then internally integrated by p2 interface external power supply will be real
The load voltage on border is shown on control panel；
Described current measurement module gathers the voltage at sampling resistor r2 two ends, is then internally integrated by p3 interface external power supply
Processing module obtains to be corrosion current by the electric current of sampling resistor r2 and is shown on control panel；
Described control panel is one piece and is located at the touch screen controlling outer casing of power supply front centre position, and control panel is provided with
Voltage sets voltage, current monitoring current, failure of current threshold value sets threshold, difference sets
Differential, tip height adjust monitoring tipadj, mode of operation and switch display box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836854.3A CN104483512B (en) | 2014-12-29 | 2014-12-29 | Scanning tunneling microscope needle point corrosion instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836854.3A CN104483512B (en) | 2014-12-29 | 2014-12-29 | Scanning tunneling microscope needle point corrosion instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104483512A CN104483512A (en) | 2015-04-01 |
| CN104483512B true CN104483512B (en) | 2017-02-01 |
Family
ID=52758077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410836854.3A Expired - Fee Related CN104483512B (en) | 2014-12-29 | 2014-12-29 | Scanning tunneling microscope needle point corrosion instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104483512B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093473A (en) * | 2016-07-27 | 2016-11-09 | 大连交通大学 | A kind of Pt Ir needle point corrosion device and method of work thereof |
| CN106757297A (en) * | 2017-02-17 | 2017-05-31 | 科斗（苏州）脑机科技有限公司 | A kind of Novel electric polar filament electrolytic cell |
| CN109490580A (en) * | 2018-11-09 | 2019-03-19 | 昆明理工大学 | A kind of annealing device of needle tip of scanning tunnel microscope |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438655A (en) * | 2003-03-27 | 2003-08-27 | 上海交通大学 | Scanning-tunnel microscope needle-tip automatic controlled etching instrument |
| CN102586854A (en) * | 2012-02-24 | 2012-07-18 | 西安交通大学 | High-efficiency automatic tungsten needle manufacturing device and method |
| CN204287230U (en) * | 2014-12-29 | 2015-04-22 | 大连交通大学 | A kind of needle tip of scanning tunnel microscope corrosion tester |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100373185B1 (en) * | 2000-11-28 | 2003-02-25 | 한국과학기술연구원 | A Wire Etching Device and a Method |
| US8293337B2 (en) * | 2008-06-23 | 2012-10-23 | Cornell University | Multiplexed electrospray deposition method |
-
2014
- 2014-12-29 CN CN201410836854.3A patent/CN104483512B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438655A (en) * | 2003-03-27 | 2003-08-27 | 上海交通大学 | Scanning-tunnel microscope needle-tip automatic controlled etching instrument |
| CN102586854A (en) * | 2012-02-24 | 2012-07-18 | 西安交通大学 | High-efficiency automatic tungsten needle manufacturing device and method |
| CN204287230U (en) * | 2014-12-29 | 2015-04-22 | 大连交通大学 | A kind of needle tip of scanning tunnel microscope corrosion tester |
Non-Patent Citations (1)
| Title |
|---|
| Note:Circuit design for direct current and alternating current electrochemical etching of scanning probe microscopy tips;Matthew M.Jobbins;《Rev. Sci. Instrum.》;20121231;第036105-1-036105-3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104483512A (en) | 2015-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108169518B (en) | Preparation system for needle tip of morphology-controllable scanning tunnel microscope | |
| CN104483512B (en) | Scanning tunneling microscope needle point corrosion instrument | |
| US4969978A (en) | Apparatus and method for tunnel current measurement observed simultaneously with electrochemical measurement | |
| CN103140009B (en) | For the Langmuir multiprobe control circuit of plasma diagnostic | |
| JPS6037197B2 (en) | Method and apparatus for controlling alumina feed rate to an alumina electrolytic bath and alumina content in the bath | |
| CN105301288B (en) | A kind of device and method preparing metal needle point | |
| CN203025209U (en) | Device for preparing pure-tungsten probe of tunnel scanning microscope | |
| CN103014826A (en) | Preparation method and preparation device of tungsten probe for electrical measurement of nanometer device | |
| CN104155476A (en) | Compound microprobe for in-situ measurement of STM image and chloride ion concentration distribution and preparation method thereof | |
| CN204287230U (en) | A kind of needle tip of scanning tunnel microscope corrosion tester | |
| CN102339704B (en) | Alternating-current electrochemical corrosion method of field emission electron source | |
| CN104020316B (en) | One kind is with compound scanning microprobe of bipolar electrode and preparation method thereof | |
| CN106370891A (en) | Preparation method for scanning probe of scanning tunneling microscope and control circuit | |
| CN102252928A (en) | Device for measuring mechanical and chemical interactions | |
| CN206002561U (en) | A kind of Pt Ir needle point corrosion device | |
| JPH0481908A (en) | Positioning method and positioning device | |
| CN103510148A (en) | Technique and device for preparing STM (Scanning Tunneling Microscope) probe with chemical corrosion and drawing method | |
| CN203479833U (en) | Modification device for pure metal probe of scanning tunnel microscope | |
| CN106001808A (en) | Automatic feedback control device for magneto-electricity linkage type electrochemical machining clearance and using method | |
| CN208969039U (en) | A kind of Resistivity testing instrument | |
| CN202189071U (en) | Simple multipurpose resistance-adjusting test probe | |
| CN109709353A (en) | A kind of the electrochemistry preparation facilities and preparation method of metal iridium needle point | |
| CN203965465U (en) | The compound microprobe that a kind of in site measurement STM image and chlorine ion concentration distribute | |
| CN2593320Y (en) | Scanning probe of scanning tunnel microscope | |
| CN209263874U (en) | A kind of concrete carbonization depth measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20170201 Termination date: 20171229 |