CN2326970Y - Device for regulating span between needle-tip and sampler for scanning probe-needle microscope - Google Patents
Device for regulating span between needle-tip and sampler for scanning probe-needle microscope Download PDFInfo
- Publication number
- CN2326970Y CN2326970Y CN 97242798 CN97242798U CN2326970Y CN 2326970 Y CN2326970 Y CN 2326970Y CN 97242798 CN97242798 CN 97242798 CN 97242798 U CN97242798 U CN 97242798U CN 2326970 Y CN2326970 Y CN 2326970Y
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- CN
- China
- Prior art keywords
- needle
- utility
- model
- scanning probe
- needle point
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- 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 - Lifetime
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Abstract
The utility model belongs to the field of a scanning probe microscope, relating to a needle point and sample space regulating device, and a fine regulating element of the utility model is a stepping motor. The utility model has the advantages of high stability, favorable repeatability, convenient operation, long service life and interchangeability, and the utility model can be used for scanning probe microscopes of various types, (such as an STM type).
Description
The utility model belongs to the scanning probe microscopy field.
Each scanning probe microscopy such as STM comprise three parts: scanning head, electronics control system, computer software.Scanning head comprises needle point, sample stage, scanner and drives into type spacing regulating device.The type spacing regulating device into of driving wherein is used for spacing between meticulous adjusting needle point and the sample.
Many in the world drive into that type spacing regulating device is to adopt the inertia mobile technology, for example: ZL92215769.3.The stability of this inertia mobile technology and repeatability are relatively poor, and antijamming capability is also poor, and difficulty of processing is big.
Also the someone adopts the into structure of driving of step motor and accurate screw combination recently.This precision screw is not a standard component, does not have interchangeability, and processing request is very high, wears no resistance, and serviceable life is limited.As misoperation, will block.Referring to Science242,209-216.
The purpose of this utility model provides a kind of needle point and sample interval regulating device that is used for scanning probe microscopy, and easy to operate, long service life, parts have interchangeability, especially have high stability, high duplication.
The utility model has adopted following scheme in order to overcome the shortcoming of prior art: replace combiner to constitute with single part and drive into type spacing regulating device.Correlation technique Science 242, the scheme that adopts step motor and accurate screw to make up among the 209-216, and the utility model adopts single step motor standard component to drive into mechanism.
In the technical solution of the utility model, replace non-standard parts with standard parts and components, correlation technique Science242 does coarse adjustment with two non-standard component screws among the 209-216, and the utility model is done coarse adjustment with the spiral micrometer head of two standard components.
More than be basic fundamental thought of the present utility model.
The utility model adopts the vertical design scheme: two springs link the needle point mounting blocks and are connected flat board.Connect on the flat board two spiral micrometer heads and a step motor are installed, its installation site constitutes an isosceles triangle, on the dull and stereotyped centre scanner is installed, sample stage is housed on the scanner, the sample standard is to probe tip on the sample stage, and the distance between needle point and the sample is regulated by spiral micrometer head and step motor.In the adjustment process of spacing, regulate two double helix micrometer heads symmetrically, the spacing of coarse adjustment sample and needle point, step motor can the external controller manual adjustments, and also available computers realizes control automatically, can be used for coarse adjustment, also can be used for fine tuning.Approximate procedure is roughly as follows: three regulating element coarse adjustment are controlled motor then and are made needle point approach sample gradually to the millimeter magnitude, cooperate the feedback of scanner, can realize that the spacing of needle point and sample reaches nanometer scale.
Advantage of the present utility model is as follows: owing to adopt single step motor to make spacing fine tuning element, avoided the various shortcoming of the assembly parts fine tuning element that step motor combines with accurate screw in the original prior art.Improved stability, the repeatability of regulating, can not block in the adjustment process, not easy to wear, prolonged serviceable life, and,, avoided the difficulty and the trouble of processing so have interchangeability because three regulating elements are standard component.
Structure of the present utility model is shown in accompanying drawing 1, accompanying drawing 2.
Accompanying drawing 1 is needle point and sample interval regulating device.Wherein:
1-connects dull and stereotyped 2-spring
3-spiral micrometer head 4-scanner
5-sample stage 6-probe
7-needle point mounting blocks 8-spiral micrometer head
The 9-step motor
Accompanying drawing 2 is dull and stereotyped for connecting, wherein:
1-spiral micrometer head mounting hole 2-flat board
3-scanner mounting hole 4-spiral micrometer head mounting hole
5-step motor mounting hole
Embodiment of the present utility model: high order graphite is bonded on the iron plate, then iron plate is placed on the sample stage, make probe tip with the Pt-Ir silk, be installed on the corresponding position of needle point piece, with manual spiral micrometer head, realize coarse adjustment earlier, be adjusted to 0.1 millimeter.Make step motor fulcrum place surface level be higher than the surface level at two spiral micrometer head fulcrum places, at this moment stop coarse adjustment.Open the electronics control box, set initial tunnel current value, and make it in feedback states work, open step motor, automatically the control needle point is near sample, in case detecting the tunnel current in loop equates with the predetermined current value, the expression needle point has entered Close Tunnel, then stops motor, regulates other parameter realization scanning, and obtain the atom image of graphite.
Claims (1)
1, a kind of needle point that is used for scanning probe microscopy is two spiral micrometer head coarse adjustment elements (3,8) and the spacing regulating device that the fine tuning elements combination forms that is connected on the flat board by being installed in the sample interval regulating device, and it is characterized in that: fine tuning element wherein is the spacing regulating device of a step motor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97242798 CN2326970Y (en) | 1997-12-02 | 1997-12-02 | Device for regulating span between needle-tip and sampler for scanning probe-needle microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97242798 CN2326970Y (en) | 1997-12-02 | 1997-12-02 | Device for regulating span between needle-tip and sampler for scanning probe-needle microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2326970Y true CN2326970Y (en) | 1999-06-30 |
Family
ID=33951928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97242798 Expired - Lifetime CN2326970Y (en) | 1997-12-02 | 1997-12-02 | Device for regulating span between needle-tip and sampler for scanning probe-needle microscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2326970Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300562C (en) * | 2004-02-26 | 2007-02-14 | 上海大学 | Model parameter calibrating and nontinear correcting method of piezoelectric actuator in scanning probe microscope |
| CN102866265A (en) * | 2011-07-05 | 2013-01-09 | 中国科学技术大学 | Scanning probe microscope body with coarse approximation motor capable of being separated from scanning structure |
| CN107850620A (en) * | 2015-06-25 | 2018-03-27 | 布鲁克纳米公司 | Sample container retainer for scanning probe microscopy |
| CN112461071A (en) * | 2020-11-20 | 2021-03-09 | 魏强 | Method for measuring repeated installation error of inertial navigation equipment |
-
1997
- 1997-12-02 CN CN 97242798 patent/CN2326970Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300562C (en) * | 2004-02-26 | 2007-02-14 | 上海大学 | Model parameter calibrating and nontinear correcting method of piezoelectric actuator in scanning probe microscope |
| CN102866265A (en) * | 2011-07-05 | 2013-01-09 | 中国科学技术大学 | Scanning probe microscope body with coarse approximation motor capable of being separated from scanning structure |
| CN107850620A (en) * | 2015-06-25 | 2018-03-27 | 布鲁克纳米公司 | Sample container retainer for scanning probe microscopy |
| CN107850620B (en) * | 2015-06-25 | 2020-11-17 | 布鲁克纳米公司 | Sample container holder for scanning probe microscope |
| CN112461071A (en) * | 2020-11-20 | 2021-03-09 | 魏强 | Method for measuring repeated installation error of inertial navigation equipment |
| CN112461071B (en) * | 2020-11-20 | 2023-12-01 | 中国人民解放军63698部队 | Method for measuring repeated installation errors of inertial navigation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |