CN201488931U - Tunnel scanning microscope for teaching - Google Patents
Tunnel scanning microscope for teaching Download PDFInfo
- Publication number
- CN201488931U CN201488931U CN200920175593XU CN200920175593U CN201488931U CN 201488931 U CN201488931 U CN 201488931U CN 200920175593X U CN200920175593X U CN 200920175593XU CN 200920175593 U CN200920175593 U CN 200920175593U CN 201488931 U CN201488931 U CN 201488931U
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- probe
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- scanner
- signal detection
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Abstract
The utility model relates to a tunnel scanning microscope for teaching, which comprises a probe head system; the probe head system is electrically connected with a computer system through an electronic control system; a signal detection device, a sample platform, a scanner and a coarse-tuning driving device are arranged in the probe head system, wherein a probe is arranged between the signal detection device and the sample platform; the probe is fixedly connected with the signal detection device; and the signal detection device, the sample platform, the scanner and the coarse-tuning driving device are electrically connected with the electronic control system. The utility model has the benefits that as popular science teaching experiment equipment, the state of development of the frontier high-tech field can be well understood by students, thereby increasing the interest of devoting to the science and technology in the future for the students.
Description
Technical field
The utility model relates to a kind of scanning tunnel microscope that is used to impart knowledge to students.
Background technology
Breadboard Ge Binni of nineteen eighty-two IBM Zurich, Switzerland (Gerd Binning) and Hai Luoleier (Heinrich Rohrer) develop first scanning tunnel microscope (Scanning TunnelingMicroscope in the world, abbreviation STM) .STM makes can observe single atom in real time at the ordered state of material surface and the physico-chemical property relevant with the surface electronic behavior the human first time, at Surface Science, material science, significant meaning and application prospects are arranged in the research in fields such as life science, be known as one of the eighties world ten big technological achievements by international scientific circle, be the inventors that the commend STM outstanding contribution to scientific research, guest Buddhist nun in 1986 and Luo Leier are awarded Nobel Prize in physics.The principle of work of scanning tunnel microscope is based on the tunnel effect in the quantum mechanics.For classical physics, be lower than the height V of the place ahead potential barrier as the kinetic energy E of a particle
0The time, it can not cross this potential barrier, and promptly transmission coefficient equals zero, and particle will be rebounded fully.And according to quantum-mechanical calculating, in the ordinary course of things, its transmission coefficient is not equal to zero, that is to say that particle can pass potential barrier this phenomenon higher than its energy and be called tunnel effect.
Human brand-new research field has been opened up in the invention of Scanning Tunneling Microscope, but uses in scientist's laboratory it more, can not spread in the middle of the teaching, uses to be subjected to limitation.
The utility model content
The purpose of this utility model provides a kind of scanning tunnel microscope that is used to impart knowledge to students, and can not be applied in deficiency in the common teaching to overcome Scanning Tunneling Microscope.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of scanning tunnel microscope that is used to impart knowledge to students comprises that end of probe system, described end of probe system are electrically connected with computer system by electronic control system; The inside of described end of probe system is provided with signal supervisory instrument, sample stage, scanner and coarse adjustment and drives motion device, wherein, is provided with probe between described signal supervisory instrument and the sample stage, and probe is fixedlyed connected with signal supervisory instrument; Described signal supervisory instrument, sample stage, scanner and coarse adjustment are driven motion device and all are electrically connected with electronic control system.
The beneficial effects of the utility model are: with picture and text combination narration quantum tunneling effect principle, how the linking frame diagram form is detected to the variation that the student has represented the small bulk of microworld, how the information that detects is transferred to the accessible electric signal of computing machine, computing machine is how the acquisition process experimental data reaches the complete procedure that how to obtain the atom pattern, disclosed the modern science achievement dexterously and be and how combined with modern technologies and produce the way of thinking of contemporary science and technology achievement, be used in the atom feature image that obtains on the utility model at last, excite the student to visit the desire of trip microworld in person.The utility model can allow the student understand the state of development of forward position high-tech area more as the science popularization teaching experimental equipment, improves the interest that the student throws oneself into scientific and technological cause in the future.
Description of drawings
Fig. 1 is the structural representation of the described a kind of scanning tunnel microscope that is used to impart knowledge to students of the utility model embodiment.
Among the figure:
1, end of probe system; 2, electronic control system; 3, computer system; 4, signal supervisory instrument; 5, probe; 6, sample stage; 7, scanner; 8, motion device is driven in coarse adjustment.
Embodiment
As shown in Figure 1, the described a kind of scanning tunnel microscope that is used to impart knowledge to students of the utility model embodiment comprises that end of probe system 1, described end of probe system 1 are electrically connected with computer system 3 by electronic control system 2.The inside of described end of probe system 1 is provided with signal supervisory instrument 4, sample stage 6, scanner 7 and coarse adjustment and drives motion device 8, wherein, is provided with probe 5 between described signal supervisory instrument 4 and the sample stage 6, fixedlys connected between probe 5 and the signal supervisory instrument 4; Described signal supervisory instrument 4, sample stage 6, scanner 7 and coarse adjustment are driven motion device 8 and all are electrically connected with electronic control system 2.Described electronic system 2 comprises the various preset functions of realizing scanner 7 and the feedback control system of keeping scanning mode, thereby described computer system 3 comprises the obtaining and the analyzing and processing output of data of processing, data that operation to the software of the man-machine interaction of computing machine, instruction realize its function, finish real-time process by electronic control system 2 control end of probe systems 1.Requirement according to scan operation software on the computer system 3, export different Control of Voltage scanners 7, thereby drive sample stage 6 motion scans, needle point and sample room can produce tunnel current, enter electronic control system 2 through signal supervisory instrument 4, electronic control system 2 is converted into electric current image and sends to computer system 3.
The described a kind of scanning tunnel microscope that is used to impart knowledge to students of the utility model embodiment, its ultimate principle is that surface with the superfine probe of atom dimension and measured matter is as two electrodes, when the distance of sample and needle point during very near (usually less than 1nm), under the effect of extra electric field, electronics can pass two potential barriers between the electrode and flow to another electrode.Tunnel current intensity has the index dependence to the distance between needle point and the sample, when the distance reduce 0.1nm, tunnel current promptly increases about order of magnitude.Therefore, according to the variation of tunnel current, we can obtain the information of the small height fluctuations of sample surfaces, if simultaneously the x-y direction is scanned, just can directly obtain three-dimensional sample surfaces shape appearance figure.
During concrete the use, allow the student grasp and understand the ultimate principle of channel effect in the quantum mechanics, tunnel effect in observation and the checking quantum mechanics, the basic structure and the basic experiment method of study and understanding Scanning Tunneling Microscope, understand sample making, the operation of equipment and the surface topography of debug process and observation sample of Scanning Tunneling Microscope, understand the development that microscopical application and nanosecond science and technology are satisfied in scanning.The utility model can allow the student understand the state of development of forward position high-tech area more as the science popularization teaching experimental equipment, improves the interest that the student throws oneself into scientific and technological cause in the future.
Claims (1)
1. a scanning tunnel microscope that is used to impart knowledge to students comprises that end of probe system (1), described end of probe system (1) are electrically connected with computer system (3) by electronic control system (2); It is characterized in that: the inside of described end of probe system (1) is provided with signal supervisory instrument (4), sample stage (6), scanner (7) and coarse adjustment and drives motion device (8), wherein, be provided with probe (5) between described signal supervisory instrument (4) and the sample stage (6), probe (5) is fixedlyed connected with signal supervisory instrument (4); Described signal supervisory instrument (4), sample stage (6), scanner (7) and coarse adjustment are driven motion device (8) and all are electrically connected with electronic control system (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920175593XU CN201488931U (en) | 2009-08-24 | 2009-08-24 | Tunnel scanning microscope for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920175593XU CN201488931U (en) | 2009-08-24 | 2009-08-24 | Tunnel scanning microscope for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201488931U true CN201488931U (en) | 2010-05-26 |
Family
ID=42427804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920175593XU Expired - Fee Related CN201488931U (en) | 2009-08-24 | 2009-08-24 | Tunnel scanning microscope for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201488931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406358A (en) * | 2021-06-09 | 2021-09-17 | 北京科技大学 | Scanning electron microscope teaching model device and using method thereof |
-
2009
- 2009-08-24 CN CN200920175593XU patent/CN201488931U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406358A (en) * | 2021-06-09 | 2021-09-17 | 北京科技大学 | Scanning electron microscope teaching model device and using method thereof |
| CN113406358B (en) * | 2021-06-09 | 2022-06-24 | 北京科技大学 | Scanning electron microscope teaching model device and using method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20130824 |