CN204128873U - A kind of micro-leakage sampling system prepares the device of unimolecule sample - Google Patents
A kind of micro-leakage sampling system prepares the device of unimolecule sample Download PDFInfo
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- CN204128873U CN204128873U CN201420617751.3U CN201420617751U CN204128873U CN 204128873 U CN204128873 U CN 204128873U CN 201420617751 U CN201420617751 U CN 201420617751U CN 204128873 U CN204128873 U CN 204128873U
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- sample
- vacuum chamber
- microleak valve
- vacuum
- kapillary
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Abstract
The utility model relates to unimolecule sample preparation technology field, a kind of micro-leakage sampling system prepares the device of unimolecule sample primarily of well heater, sampling receptacle, microleak valve, kapillary, substrate, vacuum chamber, vacuum meter composition, described well heater, described sampling receptacle, described microleak valve, described vacuum chamber, described vacuum meter connect successively, described substrate is arranged in described vacuum chamber, it is characterized in that: described microleak valve entrance point connects the openend of described sampling receptacle, described microleak valve endpiece connects described kapillary, and described kapillary stretches in described vacuum chamber.Described microleak valve is used for the molecule passing into pressed powder state by the utility model, when vacuum cavity toasts, close described microleak valve sample and would not enter vacuum chamber, can adapt in ultra-high vacuum environment, prepare unimolecule sample and do not destroy sample molecule, can not ultra-high vacuum environment be affected again.
Description
Technical field
The utility model relates to unimolecule sample preparation technology field, particularly a kind ofly have employed powder micro-leakage principle and a kind of micro-leakage sampling system that can adapt to prepare unimolecule sample in ultra-high vacuum environment prepares the device of unimolecule sample.
Background technology
Prepare unimolecule sample for the thermal evaporation method in ultra-high vacuum environment should require: one is do not destroy sample molecule, and two is easier control evaporation rate.Unimolecule sample preparation in current ultra-high vacuum environment uses the method for thermal evaporation to be sublimate on substrate by powdered sample usually, general thermal evaporation sources makes the sample of solid state distil by resistance wire or high-energy electron beam heating crucible, some portions under heat is uneven, for some macromolecular sample, its structure may be destroyed, cause the generation of molecular fragment, reduce the quality of obtained sample; For the sample that some sublimation temperature is lower, when vacuum cavity toasts (about 200 degrees Celsius), likely sample molecule in evaporation source is evaporated, pollutes vacuum chamber; Because resistance wire or high-energy electron beam heating crucible opening are about 5-10 square millimeter, therefore easily evaporate suddenly a large amount of molecule, also easily pollute vacuum cavity.The device that described a kind of micro-leakage sampling system prepares unimolecule sample can address this problem.
Utility model content
In order to solve the problem, a kind of micro-leakage sampling system of the utility model device of preparing unimolecule sample by microleak valve (microleak valve is former be equipment) for minimum gas molecule being passed into ultrahigh vacuum cavity for passing into the molecule of pressed powder state, during vacuum cavity baking, close described microleak valve, sample would not enter vacuum chamber, can not pollute.Can adapt in ultra-high vacuum environment, prepare unimolecule sample, not destroy sample molecule, can not ultra-high vacuum environment be affected.
The scheme that the utility model adopts is:
Described a kind of micro-leakage sampling system prepares the device of unimolecule sample primarily of well heater, sampling receptacle, microleak valve, kapillary, substrate, vacuum chamber, vacuum meter composition, described well heater, described sampling receptacle, described microleak valve, described vacuum chamber, described vacuum meter connect successively, described substrate is arranged in described vacuum chamber, described microleak valve entrance point connects the openend of described sampling receptacle, described microleak valve endpiece connects described kapillary, and described kapillary stretches in described vacuum chamber.
The beneficial effects of the utility model are:
Described microleak valve is used for passing into the molecule of pressed powder state by the device that described a kind of micro-leakage sampling system prepares unimolecule sample, when vacuum cavity toasts, close described microleak valve sample and would not enter vacuum chamber, can adapt in ultra-high vacuum environment, prepare unimolecule sample and do not destroy sample molecule, can not ultra-high vacuum environment be affected again.
Accompanying drawing explanation
Further illustrate below in conjunction with figure of the present utility model:
Fig. 1 is the utility model schematic diagram.
In figure, 1. well heater, 2. sampling receptacle, 3. microleak valve, 4. kapillary, 5. substrate, 6. vacuum chamber, 7. vacuum meter.
Embodiment
If Fig. 1 is the utility model schematic diagram, primarily of well heater (1), sampling receptacle (2), microleak valve (3), kapillary (4), substrate (5), vacuum chamber (6), vacuum meter (7) forms, described well heater (1), described sampling receptacle (2), described microleak valve (3), described vacuum chamber (6), described vacuum meter (7) connects successively, described substrate (5) is arranged in described vacuum chamber (6), described microleak valve (3) entrance point connects the openend of described sampling receptacle (2), described microleak valve (3) endpiece connects described kapillary (4), described kapillary (4) stretches in described vacuum chamber (6).
During work, sample powder be placed in described sampling receptacle (2) and be connected to described microleak valve (3), open described microleak valve (3) to maximal value, described vacuum chamber (6) is vacuumized to (now sampling receptacle is communicated with vacuum chamber, also the state of vacuumizing is in), after vacuum is higher than certain value, close described microleak valve (3), described vacuum chamber (6) is toasted, baking terminates rear preparation when preparing sample, heated to described sampling receptacle (2) by described well heater (1), according to the registration of described vacuum meter (7), open described microleak valve (3) slowly, until described vacuum meter (7) shows certain special value.
Because sample can move to close to described kapillary (4) outlet very, therefore compared to ordinary hot evaporation source, the temperature of heating can control lower, sample can be deposited on described substrate (5) with monomolecular form again while ensureing not destroy sample molecule.
Claims (1)
1. a micro-leakage sampling system prepares the device of unimolecule sample, primarily of well heater (1), sampling receptacle (2), microleak valve (3), kapillary (4), substrate (5), vacuum chamber (6), vacuum meter (7) forms, described well heater (1), described sampling receptacle (2), described microleak valve (3), described vacuum chamber (6), described vacuum meter (7) connects successively, described substrate (5) is arranged in described vacuum chamber (6), it is characterized in that: described microleak valve (3) entrance point connects the openend of described sampling receptacle (2), described microleak valve (3) endpiece connects described kapillary (4), described kapillary (4) stretches in described vacuum chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617751.3U CN204128873U (en) | 2014-10-13 | 2014-10-13 | A kind of micro-leakage sampling system prepares the device of unimolecule sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617751.3U CN204128873U (en) | 2014-10-13 | 2014-10-13 | A kind of micro-leakage sampling system prepares the device of unimolecule sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204128873U true CN204128873U (en) | 2015-01-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420617751.3U Expired - Fee Related CN204128873U (en) | 2014-10-13 | 2014-10-13 | A kind of micro-leakage sampling system prepares the device of unimolecule sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204128873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280280A (en) * | 2014-10-13 | 2015-01-14 | 赵烨梁 | Device for preparing unimolecular sample by microleakage sample injection method |
-
2014
- 2014-10-13 CN CN201420617751.3U patent/CN204128873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280280A (en) * | 2014-10-13 | 2015-01-14 | 赵烨梁 | Device for preparing unimolecular sample by microleakage sample injection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20161013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |