CN106237949B - A kind of method by controlling super-hydrophobic metallic matrix temperature to realize the lossless transfer of drop - Google Patents
A kind of method by controlling super-hydrophobic metallic matrix temperature to realize the lossless transfer of drop Download PDFInfo
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- CN106237949B CN106237949B CN201610624636.2A CN201610624636A CN106237949B CN 106237949 B CN106237949 B CN 106237949B CN 201610624636 A CN201610624636 A CN 201610624636A CN 106237949 B CN106237949 B CN 106237949B
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- hydrophobic metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
Abstract
The invention discloses a kind of method by controlling super-hydrophobic metallic matrix temperature to realize the lossless transfer of drop, the super-hydrophobic metallic matrix of the previously prepared two panels of this method, it is a piece of horizontal positioned for holding up 1~20 μ L drops at room temperature, another super-hydrophobic metallic matrix is heated to 30~90 DEG C, and its temperature is kept to be higher than 30 DEG C before the super-hydrophobic metallic matrix contact drop of the piece, the super-hydrophobic metallic matrix of heating is slowly moved from vertical direction to drop, drop is touched with its super hydrophobic surface, slowly lift the super-hydrophobic matrix of heating, drop is now adhered to its surface and completes grasping movement, realize that water droplet shifts.The method equipment of the present invention is simple, easy to operate, and security, Stability and adaptability are good, and the lossless transfer operation of drop can be achieved.
Description
Technical field
The present invention relates to the method for the lossless transfer of drop, and in particular to a kind of by controlling super-hydrophobic metallic matrix temperature real
The method of the lossless transfer of existing drop.
Background technology
The lossless transfer techniques of microlayer model are one of the focal issues in microfluidic control field, biomedicine detection, it is micro-
The crawl of amount medicine and release, microfluidic manipulations etc. have important actual application value.
It is divided into in-situ control method and ex situ control methods currently for the lossless transfer techniques of microlayer model.In-situ control method is
Refer in extraneous directly adhesion of the change performs device itself to liquid in the presence of driving (such as temperature, electric field, magnetic field, deformation)
Power, crawl and release movement of the performs device itself to drop are realized, without other performs devices.Patent
CN201010164546.2 discloses a kind of super hydrophobic surface microlayer model control method based on electric field action, when passing through low-voltage
The high adhesion absorption drop of super hydrophobic surface, absorption affinity reduces during high voltage, and water droplet can drip under gravity, realize liquid
Drip release movement.In-situ control method usually requires to rely on extraneous driving, flexible limited capacity.Ex situ control methods refer to utilize height
Adhesiveness surface adsorbs the drop on another low-adhesion surface.Patent CN201410040025.4 discloses one kind and utilizes diamond
Net oil-water separation mixture simultaneously shifts the method for drop using it, and terminating diamond mesh using hydrogen lifts drop, is transferred to oxygen end
Only in diamond mesh.Ex situ control methods usually require to prepare two kinds of different adhesiveness matrixes completion transfers, and preparation process is relative
It is complicated.
Contact angle between matrix surface and drop is defined in engineering to be had more than 150 °, matrix surface of the roll angle less than 10 °
Super lyophoby property, drop can present spherical on its surface.When being heated to certain temperature to metallic matrix, metallic matrix loses
Super transfusion ability, drop may adhere to metal base surface, therefore utilize this spy of the super wellability of temperature influence metallic matrix
Point, the drop of super-hydrophobic metal base surface at room temperature is captured using the super-hydrophobic metallic matrix of heating.Metal Substrate after heating
After body completes drop crawl, even if heating end causes metallic matrix cooling (until room temperature), drop is not fallen out yet, therefore can be real
Now stable crawl.Super-hydrophobic metallic matrix after heating has restorability, can keep super-hydrophobic state, therefore can realize repetition
Crawl.
The content of the invention
The present invention is to overcome in-situ control method to need complicated drive device and ex situ control methods to need two kinds of differences to glue
The shortcomings that attached property matrix realizes transfer process, propose by controlling temperature only to change a kind of super-hydrophobic metallic matrix adhesiveness, it is complete
Into droplet transfer.
Technical scheme：
A kind of method by controlling super-hydrophobic metallic matrix temperature to realize the lossless transfer of drop, step are as follows：
(1) super-hydrophobic metallic matrix is prepared
Metallic matrix is placed in stearic acid, reduces its surface energy, produces super-hydrophobic metallic matrix；
Described metallic matrix includes aluminium, titanium, stainless steel and copper etc.；
(2) drop is shifted
Super-hydrophobic metallic matrix a is horizontal positioned, 1~20 μ L drops are placed in super-hydrophobic metal base surface at room temperature,
30~90 DEG C are heated to super-hydrophobic metallic matrix b, and the liquid on super-hydrophobic metallic matrix a is contacted in super-hydrophobic metallic matrix b
Keep its temperature to be higher than 30 DEG C before drop, super-hydrophobic metallic matrix b is slowly moved from vertical direction to drop, drop is touched, delays
Slowly super-hydrophobic metallic matrix b is lifted, drop is now adhered on super-hydrophobic metallic matrix b and completes grasping movement, realizes that drop turns
Move.
Described drop is different physics, the liquid of chemical property, specifically includes running water, deionized water, milk etc..
Beneficial effects of the present invention：
(1) the inventive method equipment is simple, has the advantages that easy to operate, inexpensive, high efficiency, strong adaptability.
(2) the inventive method is safe, and the adhesion to drop is shown when heating super-hydrophobic metallic matrix to 30 DEG C
Property, realize to droplet transfer, experimenter will not be scalded.And it can be continued 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
Cause metallic matrix to cool down, or even be cooled to room temperature, drop will not still depart from from super-hydrophobic metal base surface.
(4) recycling of the inventive method is good, is added dropwise again on its surface after heating super-hydrophobic metallic matrix cooling
Drop, ultra-hydrophobicity is still shown, 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 to hold up liquid under normal temperature
Drop, can also be heated as grabbing device.
Brief description of the drawings
Fig. 1 is to the schematic flow sheet of the lossless transfer of drop in embodiment 1.
Embodiment
Below in conjunction with accompanying drawing and technical scheme, embodiment of the invention is further illustrated.
Embodiment 1：
Super-hydrophobic aluminium flake a is horizontal positioned, 10 μ L drops are placed in super-hydrophobic metallic matrix a surfaces at room temperature, water droplet exists
Its surface globulate.40 DEG C are heated to another super-hydrophobic aluminium flake b, and the liquid on super-hydrophobic aluminium flake a is contacted in super-hydrophobic aluminium flake b
Keep its temperature to be higher than 30 DEG C before drop, super-hydrophobic aluminium flake b is slowly moved from vertical direction to drop, touches drop, slowly lift
Super-hydrophobic aluminium flake b is played, drop is now adhered on super-hydrophobic aluminium flake b.Now grasping movement is completed, and realizes that water droplet shifts.
Claims (2)
- A kind of 1. method by controlling super-hydrophobic substrate temperature to realize the lossless transfer of drop, it is characterised in that step is as follows：(1) super-hydrophobic metallic matrix is preparedMetallic matrix is placed in stearic acid, reduces its surface energy, produces super-hydrophobic metallic matrix；(2) drop is shiftedSuper-hydrophobic metallic matrix a is horizontal positioned, 1~20 μ L drops are placed in super-hydrophobic metal base surface at room temperature, 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 to be higher than 30 DEG C, super-hydrophobic metallic matrix b is slowly moved from vertical direction to drop, touches drop, slowly lift Super-hydrophobic metallic matrix b is played, drop is now adhered on super-hydrophobic metallic matrix b and completes grasping movement, realizes droplet transfer；Described metallic matrix includes aluminium, titanium, stainless steel and copper.
- 2. according to the method for claim 1, it is characterised in that described drop includes running water, deionized water and milk.
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| 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 CN106237949A (en) | 2016-12-21 |
| CN106237949B true CN106237949B (en) | 2017-11-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110787845B (en) * | 2019-11-04 | 2022-05-20 | 苏州大学 | Liquid droplet tweezers and liquid droplet control method |
| CN111282528B (en) * | 2020-02-28 | 2021-08-27 | 苏州大学 | Micro-reactor and method based on liquid drop tweezers |
Citations (4)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015214931A (en) * | 2014-05-12 | 2015-12-03 | セイコーエプソン株式会社 | Liquid transport device and liquid transport method |
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2016
- 2016-07-29 CN CN201610624636.2A patent/CN106237949B/en active Active
Patent Citations (4)
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| "铜表面高疏水薄膜的制备及摩擦学性能的研究";王中乾 等;《摩擦学学报》;20120128;第32卷(第1期);53-57 * |
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