CN106237949A - A kind of by controlling the method that super-hydrophobic metallic matrix temperature realizes the lossless transfer of drop - Google Patents
A kind of by controlling the method that super-hydrophobic metallic matrix temperature realizes the lossless transfer of drop Download PDFInfo
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- CN106237949A CN106237949A CN201610624636.2A CN201610624636A CN106237949A CN 106237949 A CN106237949 A CN 106237949A CN 201610624636 A CN201610624636 A CN 201610624636A CN 106237949 A CN106237949 A CN 106237949A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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Abstract
The invention discloses a kind of by controlling the method that super-hydrophobic metallic matrix temperature realizes the lossless transfer of drop, the super-hydrophobic metallic matrix of the previously prepared two panels of the method, a piece of at room temperature horizontal positioned is for holding up 1～20 μ L drops, another super-hydrophobic metallic matrix is heated to 30～90 DEG C, and keep its temperature higher than 30 DEG C before this sheet super-hydrophobic metallic matrix contact drop, the super-hydrophobic metallic matrix of heating is slowly moved to drop by vertical direction, drop is touched with its super hydrophobic surface, slowly lift the super-hydrophobic matrix of heating, drop now sticks to its surface and completes grasping movement, realize water droplet transfer.The method equipment of the present invention is simple, easily operates, and safety, Stability and adaptability are good, can realize the lossless transfer operation of drop.
Description
Technical field
The method that the present invention relates to the lossless transfer of drop, is specifically related to a kind of real by controlling super-hydrophobic metallic matrix temperature
The method of the existing lossless transfer of drop.
Background technology
The lossless transfer techniques of microlayer model is one of the focal issue in microfluidic control field, biomedicine detection, micro-
The aspects such as amount medicine crawl and release, microfluidic manipulations have important actual application value.
Lossless transfer techniques currently for microlayer model is divided into in-situ control method and ex situ control methods.In-situ control method is
Refer to directly change under the effect driving (such as temperature, electric field, magnetic field, deformation etc.) in the external world perform the device self adhesion to liquid
Power, it is achieved perform device self to the crawl of drop and release movement, it is not necessary to other perform device.Patent
CN201010164546.2 discloses a kind of super hydrophobic surface microlayer model control method based on electric field action, during by low-voltage
The high adhesion absorption drop of super hydrophobic surface, during high voltage, absorption affinity reduces, and water droplet can drip under gravity, it is achieved liquid
Drip release movement.In-situ control method typically requires the support external world and drives, flexible limited capacity.Ex situ control methods refers to utilize height
Adhesiveness surface adsorbs the drop on another low-adhesion surface.Patent CN201410040025.4 discloses one and utilizes diamond
Net oil-water separation mixture the method utilizing its transfer drop, utilize hydrogen to terminate diamond mesh and mention drop, transfer to oxygen eventually
Only in diamond mesh.Ex situ control methods typically requires two kinds of different adhesiveness matrixes of preparation and completes transfer, and preparation process is relative
Complicated.
Define between matrix surface and drop the matrix surface that contact angle is more than 150 °, roll angle is less than 10 ° in engineering to have
Super lyophoby character, drop can present spherical on its surface.When metallic matrix is heated to uniform temperature, metallic matrix loses
Super transfusion ability, drop may adhere to metal base surface, therefore utilizes this spy of super wellability of temperature influence metallic matrix
Point, uses the super-hydrophobic metallic matrix of heating to capture the drop of super-hydrophobic metal base surface under room temperature.Metal Substrate after heating
After body completes drop crawl, even if heating end causes metallic matrix to be lowered the temperature (until room temperature), drop does not falls out yet, therefore can be real
The most stable crawl.Super-hydrophobic metallic matrix after heating has restorability, can keep super-hydrophobic state, therefore can realize repeating
Capture.
Summary of the invention
The present invention is to overcome in-situ control method to need complicated driving means and ex situ control methods to need two kinds of differences to glue
Attached property matrix realizes the shortcoming of transfer process, proposes only to change a kind of super-hydrophobic metallic matrix adhesiveness by control temperature, complete
Become droplet transfer.
Technical scheme:
A kind of by controlling the method that super-hydrophobic metallic matrix temperature realizes the lossless transfer of drop, step is as follows:
(1) super-hydrophobic metallic matrix is prepared
Metallic matrix is placed in stearic acid, reduces its surface energy, obtain super-hydrophobic metallic matrix；
Described metallic matrix includes aluminum, titanium, rustless steel and copper etc.；
(2) transfer drop
By super-hydrophobic metallic matrix a horizontal positioned, under room temperature, 1～20 μ L drops are placed in super-hydrophobic metal base surface,
Super-hydrophobic metallic matrix b is heated to 30～90 DEG C, and contacts the liquid on super-hydrophobic metallic matrix a at super-hydrophobic metallic matrix b
Keep its temperature higher than 30 DEG C before dripping, super-hydrophobic metallic matrix b is slowly moved to drop by vertical direction, touches drop, slow
Slowly lifting super-hydrophobic metallic matrix b, drop now sticks to complete grasping movement on super-hydrophobic metallic matrix b, it is achieved water droplet turns
Move.
Described drop is different physics, the liquid of chemical property, specifically includes tap water, deionized water, milk etc..
Beneficial effects of the present invention:
(1) the inventive method equipment is simple, has the advantages such as easily operation, low cost, high efficiency, strong adaptability.
(2) the inventive method safety is high, demonstrates the adhesion to drop when heating super-hydrophobic metallic matrix to 30 DEG C
Property, it is achieved to droplet transfer, experimenter will not be scalded.And can continue to improve temperature according to actual requirement.
(3) the inventive method Transfer Stability is good, after the super-hydrophobic metallic matrix absorption drop of heating, even if stopping heating
Causing metallic matrix to cool down, be even cooled to room temperature, drop still will not depart from from super-hydrophobic metal base surface.
(4) recycling of the inventive method is good, again drips on its surface after heating the cooling of super-hydrophobic metallic matrix
Drop, still demonstrates ultra-hydrophobicity, therefore super-hydrophobic metallic matrix is reusable.
(5) interchangeability of the super-hydrophobic metallic matrix of the present invention is strong, and super-hydrophobic metallic matrix both can be used for holding up water under room temperature
Drip, it is possible to heated as grabbing device.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of transfer lossless to drop in embodiment 1.
Detailed description of the invention
Below in conjunction with accompanying drawing and technical scheme, further illustrate the detailed description of the invention of the present invention.
Embodiment 1:
By super-hydrophobic aluminium flake a horizontal positioned, under room temperature, 10 μ L drops being placed in super-hydrophobic metallic matrix a surface, water droplet exists
Its surface globulate.Another super-hydrophobic aluminium flake b is heated to 40 DEG C, and contacts the liquid on super-hydrophobic aluminium flake a at super-hydrophobic aluminium flake b
Keep its temperature higher than 30 DEG C before dripping, super-hydrophobic aluminium flake b is slowly moved to drop by vertical direction, touches drop, slowly lift
Playing super-hydrophobic aluminium flake b, drop now sticks on super-hydrophobic aluminium flake b.Now grasping movement completes, it is achieved water droplet shifts.
Claims (3)
1. the method realizing the lossless transfer of drop by the super-hydrophobic substrate temperature of control, it is characterised in that step is as follows:
(1) super-hydrophobic metallic matrix is prepared
Metallic matrix is placed in stearic acid, reduces its surface energy, obtain super-hydrophobic metallic matrix；
(2) transfer drop
By super-hydrophobic metallic matrix a horizontal positioned, under room temperature, 1～20 μ L drops are placed in super-hydrophobic metal base surface, to super
Hydrophobic metal matrix b is heated to 30～90 DEG C, and before the drop that super-hydrophobic metallic matrix b contacts on super-hydrophobic metallic matrix a
Keep its temperature higher than 30 DEG C, super-hydrophobic metallic matrix b is slowly moved to drop by vertical direction, touches drop, slowly lift
Playing super-hydrophobic metallic matrix b, drop now sticks to complete grasping movement on super-hydrophobic metallic matrix b, it is achieved water droplet shifts.
Method the most according to claim 1, it is characterised in that described metallic matrix includes aluminum, titanium, rustless steel and copper.
Method the most according to claim 1 and 2, it is characterised in that described drop includes tap water, deionized water and cattle
Milk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624636.2A CN106237949B (en) | 2016-07-29 | 2016-07-29 | A kind of method by controlling super-hydrophobic metallic matrix temperature to realize the lossless transfer of drop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610624636.2A CN106237949B (en) | 2016-07-29 | 2016-07-29 | A kind of method by controlling super-hydrophobic metallic matrix temperature to realize the lossless transfer of drop |
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| CN106237949A true CN106237949A (en) | 2016-12-21 |
| CN106237949B CN106237949B (en) | 2017-11-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282528A (en) * | 2020-02-28 | 2020-06-16 | 苏州大学 | Micro-reactor and method based on liquid drop tweezers |
| WO2021087953A1 (en) * | 2019-11-04 | 2021-05-14 | 苏州大学 | Liquid droplet tweezers and liquid droplet control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865928A (en) * | 2010-05-06 | 2010-10-20 | 大连理工大学 | Super-hydrophobic surface micro-droplet operation and control method based on electric field effect |
| CN102256390A (en) * | 2011-03-22 | 2011-11-23 | 上海交通大学 | Control method of heat capillary flow in liquid drop |
| CN102345117A (en) * | 2011-09-19 | 2012-02-08 | 北京航空航天大学 | Method for preparing super-hydrophobic high-adhesion metal surface based on peanut leaf surface simulation |
| CN103741116A (en) * | 2014-01-27 | 2014-04-23 | 吉林大学 | Diamond net and application of diamond net in separating oil-water mixture and transferring liquid drops |
| US20150322939A1 (en) * | 2014-05-12 | 2015-11-12 | Seiko Epson Corporation | Liquid transport device and liquid transport method |
-
2016
- 2016-07-29 CN CN201610624636.2A patent/CN106237949B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865928A (en) * | 2010-05-06 | 2010-10-20 | 大连理工大学 | Super-hydrophobic surface micro-droplet operation and control method based on electric field effect |
| CN102256390A (en) * | 2011-03-22 | 2011-11-23 | 上海交通大学 | Control method of heat capillary flow in liquid drop |
| CN102345117A (en) * | 2011-09-19 | 2012-02-08 | 北京航空航天大学 | Method for preparing super-hydrophobic high-adhesion metal surface based on peanut leaf surface simulation |
| CN103741116A (en) * | 2014-01-27 | 2014-04-23 | 吉林大学 | Diamond net and application of diamond net in separating oil-water mixture and transferring liquid drops |
| US20150322939A1 (en) * | 2014-05-12 | 2015-11-12 | Seiko Epson Corporation | Liquid transport device and liquid transport method |
Non-Patent Citations (1)
| Title |
|---|
| 王中乾 等: ""铜表面高疏水薄膜的制备及摩擦学性能的研究"", 《摩擦学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021087953A1 (en) * | 2019-11-04 | 2021-05-14 | 苏州大学 | Liquid droplet tweezers and liquid droplet control method |
| CN111282528A (en) * | 2020-02-28 | 2020-06-16 | 苏州大学 | Micro-reactor and method based on liquid drop tweezers |
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| CN106237949B (en) | 2017-11-10 |
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