CN106990025B - A biomimetic surface structure that captures micro-nanoparticles - Google Patents
A biomimetic surface structure that captures micro-nanoparticles Download PDFInfo
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- CN106990025B CN106990025B CN201710241701.8A CN201710241701A CN106990025B CN 106990025 B CN106990025 B CN 106990025B CN 201710241701 A CN201710241701 A CN 201710241701A CN 106990025 B CN106990025 B CN 106990025B
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- 239000002105 nanoparticle Substances 0.000 title claims abstract description 14
- 230000003592 biomimetic effect Effects 0.000 title 1
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 18
- 239000011148 porous material Substances 0.000 claims description 5
- 239000008187 granular material Substances 0.000 abstract description 25
- 238000010276 construction Methods 0.000 abstract description 21
- 239000000126 substance Substances 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 2
- 235000013339 cereals Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 241000239226 Scorpiones Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000003694 hair properties Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0038—Investigating nanoparticles
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- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
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- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
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Abstract
The invention discloses a kind of bionic surface structures for capturing micro-nano granules, it is the composite construction that bionical bowl-shape protrusion element body and hourglass-shaped embedded bowl configurations are distributed on element surface, bionical bowl-shape protrusion element body has pit, the lower communication hole gap of pit, hole are connected to the lower part of hourglass-shaped embedded bowl configurations；Bionical bowl-shape protrusion element body center has hole；The bionical bowl-shape inclined setting of protrusion element body, hourglass-shaped embedded bowl configurations neck have gap.The hole and leakage shape of the miniature scale in bionical bowl-shape protrusion element body centre of the invention embed the gap of bowl configurations and bionical bowl-shape protrusion element body bottom, are conducive to capture micro-nano granules, and the substance is made to enter hourglass-shaped embedded bowl configurations bottom.The present invention can improve the collection efficiency of micro-nano particle.
Description
Technical field
The present invention relates to a kind of surface texture, in particular to a kind of bionic surface structure for capturing micro-nano granules.
Background technique
With the rapid development of our country's economy, the more ground in the whole nation are shrouded by haze in recent years, sulfur dioxide, nitrogen oxides and are waved
The fine particles PM2.5 such as hair property organic matter (particulate matter of the diameter less than or equal to 2.5 microns in atmosphere) discharge amount is significantly increased.Mist
The problems such as haze weather easily makes the visibility of air be lower, and then generation traffic jam, traffic accident take place frequently.Meanwhile in air
The harmful substance of part micro/nano-scale can enter blood by respiratory tract and lung, seriously endanger human health.Mist is eliminated at present
Haze is mainly suspended by spraying haze adsorbent material in rain making, air, building the methods of gallery of divulging information to reduce in air
The content of composition granule object.But these methods have the shortcomings that certain, if rain making influences the normal life of citizen, spray in air
It spills that haze adsorbent material use cost is high, is unable to large-scale promotion, builds ventilation gallery except haze effect is unobvious etc..
It is also very necessary that real-time monitoring is carried out by solid particle poisonous and harmful in sensors towards ambient simultaneously.Sensor technology
The always difficult point and hot spot of international academic community research, stability is good and high sensitivity is two big performances pursuits of sensor.City
The stability of sensor on field and sensitivity cannot all satisfy the use demand.Studies have shown that influencing the main of sensor performance
Factor is exposure and the time of contact of tested micro-nano granules and sensor sensing element.The people of correlative study both at home and abroad at present
Member is mainly from the angle of material, the capture measured matter ability of Lai Tigao sensor sensing element.But its preparation process
Complexity, preparation condition is harsh, should not promote on a large scale.
Summary of the invention
The object of the present invention is to provide a kind of bionic surface structure for capturing micro-nano granules, the present invention is based on scorpion comb
The orderly micro-nano structure form on device surface, the surface texture are conducive to improve the collection efficiency of micro-nano particle.
The present invention is that answering for bionical bowl-shape protrusion element body and hourglass-shaped embedded bowl configurations is distributed on element surface
Structure is closed, bionical bowl-shape protrusion element body has pit, the lower communication hole gap of pit, hole and hourglass-shaped embedded bowl configurations
Lower part connection；Bionical bowl-shape protrusion element body center has hole；Bionical bowl-shape protrusion element body is inclined to be set
It sets,；Hourglass-shaped embedded bowl configurations neck has gap.
The arrangement mode of the composite construction of the bionical bowl-shape protrusion element body and hourglass-shaped embedded bowl configurations is to hand over
Wrong array arrangement.
The back cut diameter of the pit of the bionical bowl-shape protrusion element bodyFor 2~2.5um, bionical bowl-shape protrusion list
The height H of first body3For 2~2.5um；The diameter of the hourglass-shaped embedded bowl configurationsIt is hourglass-shaped embedded for 5~10um
The depth H of bowl configurations1For 7~15um, the lower depth H of hourglass-shaped embedded bowl configurations2For 5~13um.
The diameter of the hole of the bionical bowl-shape protrusion element bodyFor 0.6~0.8um.
The central axis of the bionical bowl-shape protrusion element body and the angle theta of horizontal direction are 60~80 °.
The width L in the gap of the hourglass-shaped embedded bowl configurations1For 0.5~0.7um.
The composite construction of the bionical bowl-shape protrusion element body and hourglass-shaped embedded bowl configurations is staggered arrangement
When, it is between left and right 5~10um away from B that the distance between adjacent composite construction, which is that fore-and-aft clearance A is 5~10um,.
The structure size of bionical bowl-shape protrusion element body and hourglass-shaped embedded bowl configurations of the invention is micron order；Institute
The bionical bowl-shape inclined arrangement of protrusion element body stated, inclined direction are opposite with micro-nano granules flow direction；
Bionical bowl-shape protrusion element body centre has the hole of micro/nano-scale, and the hole and hourglass-shaped embedded bowl configurations neck
It is connected；Certain gap is arranged at hourglass-shaped embedded bowl configurations neck and bionical bowl-shape protrusion element body bottom, which can lead to
Cross nano particle substance.
The course of work of the invention:
The bionical bowl-shape inclined setting of protrusion element body, inclined direction with have micro-nano granules flow direction phase
Instead.When the air-flow for being loaded with micro-nano particle flows through composite structure surface, air-flow and the composite construction are acted on, and form gas swirl,
So that more micro-nano granules have the contact of long period with the composite construction, be conducive to further capture the micro-nano in fluid
Rice grain substance.
When the air-flow for carrying micro-nano granules is blown, the pit of bionical bowl-shape protrusion element body captures micro-nano granules,
The micro-nano granules of pit capture enter the lower part of hourglass-shaped embedded bowl configurations by hole, meanwhile, hourglass-shaped embedded pit
The top of structure can also capture micro-nano granules, the micro-nano granules of hourglass-shaped embedded bowl configurations top capture by gap into
Enter the lower part of hourglass-shaped embedded bowl configurations.The overturning present invention, the micro-nano granules of capture can be poured out be collected.
The beneficial effects of the present invention are:
1, the hole of the miniature scale in bionical bowl-shape protrusion element body centre of the invention and leakage shape embed pit knot
The gap of structure and bionical bowl-shape protrusion element body bottom is conducive to capture micro-nano granules, and it is hourglass-shaped to enter the substance
Embedded bowl configurations bottom.
2, when being loaded with the air-flow of micro-nano particle and flowing through composite structure surface, air-flow and the structure function form gas swirl,
So that more micro-nano granules have the contact of long period with the structure, be conducive to further capture micro-nano in fluid
Grain substance.
3, the present invention can be used for the captures of micro-and nano-particles, can be widely applied to microcapsules, ambient particle monitoring and absorb,
Drug conveying and the sensing element of sensor etc..The present invention can improve the collection efficiency of micro-nano particle.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is unit composite construction schematic diagram of the invention.
Fig. 3 is the cross-sectional view one of unit composite construction of the invention.
Fig. 4 is the cross-sectional view two of unit composite construction of the invention.
Fig. 5 is the cross-sectional view of the multiple unit composite constructions in longitudinal direction of the invention.
Fig. 6 is that invention unit composite construction captures micro-nano substance schematic diagram.
Wherein: 1-bionical bowl-shape protrusion element body；2-hourglass-shaped embedded bowl configurations；3-pits；4-holes；5—
Gap；- hourglass-shaped embedded bowl configurations diameter；H1- hourglass-shaped embedded bowl configurations depth；- pit back cut diameter；
H2- hourglass-shaped embedded bowl configurations lower depth；H3The height of-bionical bowl-shape protrusion element body；- bionical bowl-shape protrusion
Cell cube center pore diameter；The angle of θ-bionical bowl-shape protrusion element body central axis and horizontal direction；L1- bionical
Bowl-shape protrusion element body bottom and hourglass-shaped embedded bowl configurations neck gap width；A-composite construction is staggered arrangement
When, the fore-and-aft clearance between adjacent composite construction；When B-composite construction is staggered arrangement, between adjacent composite construction
Between left and right away from.
Specific embodiment
Please refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the present embodiment be distributed on element surface it is bionical bowl-shape convex
The composite construction of cell cube 1 and hourglass-shaped embedded bowl configurations 2 is played, bionical bowl-shape protrusion element body 1 has pit 3, under pit 3
Portion interconnected pore 4, hole 4 are connected to the lower part of hourglass-shaped embedded bowl configurations 2；Bionical bowl-shape 1 center of protrusion element body
With hole 4；The inclined setting of bionical bowl-shape protrusion element body 1；Hourglass-shaped 2 neck of embedded bowl configurations has gap 5.
The arrangement mode of the composite construction of the bionical bowl-shape protrusion element body 1 and hourglass-shaped embedded bowl configurations 2 is
Staggered arrangement.
The back cut diameter of the pit 3 of the bionical bowl-shape protrusion element body 1For 2~2.5um, bionical bowl-shape protrusion
The height H of cell cube 13For 2~2.5um；The diameter of the hourglass-shaped embedded bowl configurations 2It is hourglass-shaped for 5~10um
The depth H of embedded bowl configurations 21For 7~15um, the lower depth H of hourglass-shaped embedded bowl configurations 22For 5~13um.
The diameter of the hole 4 of the bionical bowl-shape protrusion element body 1For 0.6~0.8um.
The central axis of the bionical bowl-shape protrusion element body 1 and the angle theta of horizontal direction are 60~80 °.
The width L in the gap 5 of the hourglass-shaped embedded bowl configurations 21For 0.5~0.7um.
The composite construction of the bionical bowl-shape protrusion element body 1 and hourglass-shaped embedded bowl configurations 2 is staggered row
When column, it is between left and right 5~10um away from B that the distance between adjacent composite construction, which is that fore-and-aft clearance A is 5~10um,.
The course of work of the present embodiment:
As shown in fig. 6, the inclined setting of bionical bowl-shape protrusion element body 1, inclined direction with have micro-nano
Grain flow direction is opposite.When the air-flow for being loaded with micro-nano particle flows through composite structure surface, air-flow and the composite construction are acted on, shape
At gas swirl, so that more micro-nano granules have the contact of long period with the composite construction, be conducive to further capture
Micro-nano granules substance in fluid.
When the air-flow for carrying micro-nano granules is blown, the pit 3 of bionical bowl-shape protrusion element body 1 captures micro-nano
Grain, the micro-nano granules that pit 3 captures enter the lower part of hourglass-shaped embedded bowl configurations 2 by hole 4, meanwhile, it is hourglass-shaped interior
The top of embedding bowl configurations 2 can also capture micro-nano granules, and the micro-nano granules of hourglass-shaped embedded 2 top of bowl configurations capture are logical
Cross the lower part that gap 5 enters hourglass-shaped embedded bowl configurations 2.The micro-nano granules of capture, can be poured out progress by the overturning present invention
It collects.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710241701.8A CN106990025B (en) | 2017-04-14 | 2017-04-14 | A biomimetic surface structure that captures micro-nanoparticles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710241701.8A CN106990025B (en) | 2017-04-14 | 2017-04-14 | A biomimetic surface structure that captures micro-nanoparticles |
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| CN106990025B true CN106990025B (en) | 2019-06-04 |
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| CN109813766B (en) * | 2019-03-26 | 2021-06-29 | 吉林大学 | A kind of gas sensor imitating scorpion comb teeth and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931654A (en) * | 2015-06-11 | 2015-09-23 | 吉林大学 | Biomimetic microstructure used on surface of gas sensor |
| CN106168547A (en) * | 2016-10-08 | 2016-11-30 | 吉林大学 | A kind of bionical gas absorption sampling apparatus |
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2017
- 2017-04-14 CN CN201710241701.8A patent/CN106990025B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931654A (en) * | 2015-06-11 | 2015-09-23 | 吉林大学 | Biomimetic microstructure used on surface of gas sensor |
| CN106168547A (en) * | 2016-10-08 | 2016-11-30 | 吉林大学 | A kind of bionical gas absorption sampling apparatus |
Non-Patent Citations (2)
| Title |
|---|
| "The effect of the micro-structures on the scorpion surface for improving the anti-erosion performance";Zhiwu Han 等;《Surface & Coatings Technology》;20170121;第313卷;第143-150页 |
| "仿生形态表面气固冲蚀磨损性能";韩志武 等;《吉林大学学报(工学版)》;20091130;第39卷(第6期);第1512-1515页 |
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| CN106990025A (en) | 2017-07-28 |
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