CN108680464A - A kind of judgment method of body structure surface moisture state transistion pressure - Google Patents
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Abstract
The present invention provides a kind of judgment method of body structure surface moisture state transistion pressure, based on the change with solid-liquid moisture state, pass through different media after the external upper of light incidence microchannel, optical path difference can change, so as to cause the changed principle of interference fringe, interference fringe variation is analyzed, the transistion pressure of specific structure surface C assie states and Wenzel states is finally obtained.The judgment method of the present invention can be realized using light interference platform, and compared to traditional Conforcol Microscopy equipment, light interference platform is moderate, and precision is higher, disclosure satisfy that the measurement of condition conversion in experiment, be easy to promote and apply.
Description
Technical field
The invention belongs to microchannel fluid flow prediction technical fields more particularly to a kind of body structure surface moisture state to change
The judgment method of pressure.
Background technology
In a micro-flow system, on the one hand, as fluid flows through the increase of microchannel flow velocity, the resistance in flow process
It can increase rapidly, limit the increase of flow velocity in pipeline, on the other hand, regulate and control the flow resistance in microchannel for control channel
Interior flow process is of great significance, and if improved the flow velocity in micro-flow system, can realize the effective of substance in microchannel
Mixing；The surface of different coefficients of friction is prepared to different channels in micro-flow system, at this point, when fluid flow rate difference in system
When, fluid can flow through different pipelines, and different hybrid modes can be realized in same micro-flow system to achieve over.
Therefore, microchannel how is rationally designed to realize channel internal resistance control to finally realizing that microchannel functional diversities are very heavy
It wants.
It is the effective ways for controlling microchannel internal resistance in microchannel surface design different structure, this is because fluid flows through
When the surface of different structure, different wetting states can be in.The gap that coarse solids surface whether is penetrated into according to liquid, can
To be divided into two kinds of solid-liquid wetting states of Wenzel and Cassie, referring to Fig. 1 (a), Fig. 1 (b), respectively Wenzel and Cassie two
The schematic diagram of kind solid-liquid wetting state.When fluid is in Cassie states, since the active area between flowing admittedly reduces, thus it is solid
Body also reduces the force effect of fluid, and the out-of-date resistance of fluid stream is thus caused to reduce.Resistance of the different surfaces structure to flow process
The effect that power reduces is different.But, it is contemplated that in Cassie states, the gas in solid gap can be because of the change of external environment
And disappear, i.e. Cassie can be gradated with the change of external environment, such as pressure rise as Wenzel states, at this point, stream
Dynamic resistance will increase.Therefore, the surface of different coefficients of friction can be obtained by rationally designing surface texture, must assure that simultaneously
Fluid is in Cassie states.Therefore, judge in a certain surfactant fluid from Cassie condition conversions into the critical of Wenzel states
Pressure thereby determines that the applicable working condition of the body structure surface is most important for finally body structure surface is applied in Practical Project
's.
Conforcol Microscopy are mainly used to obtain surface part the conversion of Cassie and Wenzel at present
The method of feature, although this method exactly accurate can must obtain liquid in the distribution situation on surface, it is needed
The support of Microscopy systems, thus it is sufficiently expensive.
Invention content
To solve the above problems, the present invention provides a kind of judgment method of body structure surface moisture state transistion pressure, it can
Obtain the transistion pressure of specific structure surface C assie states and Wenzel states.
A kind of judgment method of body structure surface moisture state transistion pressure, being applied to bottom inner surface has the micro- of micro-structure
Channel includes the following steps：
According to the size of the wavelength X of incident laser, fluid refractive index n to be implanted and microchannel, obtain respectively micro- logical
The interference fringe that the corresponding incident laser of three kinds of road theoretical work pattern and reflection laser are formed in inside microchannels upper surface
Fringe order k0、k1And k2；The theoretical work pattern includes successively：The fluid not being passed through in microchannel in fluid, microchannel
In Wenzel states and it is in Cassie states；
Respectively by fringe order k1And k2With fringe order k0It is poor to make, and obtains corresponding first difference △ k1With the second difference
△k2；
Respectively by the first difference △ k1With the second difference △ k2To 2 modulus, corresponding first modulus value m is obtained1With the second modulus value
m2；
By incident laser from microchannel external upper incidence inside microchannels lower surface so that incident laser is micro-
Channel interior lower surface forms reflection laser；
Fluid is injected into microchannel and improves the pressure of fluid in microchannel at equal intervals, according to the first modulus value m1With
Second modulus value m2Difference △ m sizes, obtain the transistion pressure that the fluid is converted to Wenzel states from Cassie states, have
Body is, if the difference △ m are more than the first given threshold T1, the light and shade fringe position of the interference fringe no longer changes
When corresponding minimum pressure be the transistion pressure；If the difference △ m are less than the first given threshold T1 and are more than the second setting threshold
Value T2, then the peak position of the light intensity collection of illustrative plates of the light and shade fringe position and interference fringe of the interference fringe no longer change
When corresponding minimum pressure be the transistion pressure.
Optionally, the fringe order k of the interference fringe0、k1And k2Acquisition methods include：
It obtains under different theories operating mode respectively, the light path of incident laser and reflection laser in inside microchannels upper surface
Difference；
Obtain the wavelength X of incident laser, the refractive index n of fluid；
When according to not being passed through fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser and the wavelength X obtain
Take fringe order k0；
When being in Wenzel states according to the fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser, institute
Wavelength X and the refractive index n are stated, fringe order k is obtained1；
When being in Cassie states according to the fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser, institute
Wavelength X and the refractive index n are stated, fringe order k is obtained2。
Optionally, it obtains under different theories operating mode respectively, incident laser and reflection laser are in inside microchannels upper table
The optical path difference in face includes：
When not being passed through fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser are：2(H+h)；
Wherein, H be inside microchannels upper surface at a distance from the micro-structure upper surface, h be the microstructure height；
When fluid in microchannel is in Wenzel states, incident laser and the corresponding optical path difference of reflection laser are：2n(H+
h)；
When fluid in microchannel is in Cassie states, incident laser and the corresponding optical path difference of reflection laser are：2nH+
2h。
Optionally, if the first difference △ k1When to 2 modulus, the first modulus value m1More than 1, then the first modulus value m1It is updated to
2-m1, otherwise the first modulus value m1Keep initial value；
If the second difference △ k2When to 2 modulus, the second modulus value m2More than 1, then the second modulus value m2It is updated to 2-m2, no
Then the second modulus value m2Keep initial value.
Optionally, the first given threshold T1 is 0.7, and the second given threshold T2 is 0.2.
Advantageous effect：
The present invention provides a kind of judgment method of body structure surface moisture state transistion pressure, based on solid-liquid moisture state
Change, can be changed by different media, optical path difference after the external upper of light incidence microchannel, so as to cause interference item
The changed principle of line, analysis interference fringe variation, finally obtains specific structure surface C assie states and Wenzel states
Transistion pressure.The judgment method of the present invention can be realized using light interference platform, compared to traditional Conforcol
Microscopy equipment, light interference platform is moderate, and precision is higher, disclosure satisfy that the measurement of condition conversion in experiment, holds
Easily promote and apply.
Judgment method through the invention obtains the transistion pressure of specific structure surface C assie states and Wenzel states
Afterwards, can according to transistion pressure reversely instruct adjust microchannel internal structure so that the Cassie states of microchannel with
The transistion pressure of Wenzel states meets actual demand.
Description of the drawings
Fig. 1 (a) is Wenzel solid-liquids wetting state in the prior art；
Fig. 1 (b) is Cassie solid-liquids wetting state in the prior art；
Fig. 2 is a kind of microchannel structure schematic diagram provided in an embodiment of the present invention；
When Fig. 3 is that the fluid in microchannel of the embodiment of the present invention is in Wenzel states, incident laser and reflection laser pair
The optical path difference schematic diagram answered；
When Fig. 4 is that the fluid in the present embodiment microchannel of the present invention is in Cassie states, incident laser and reflection laser
Corresponding optical path difference schematic diagram.
Specific implementation mode
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application are clearly and completely described.
A kind of judgment method of body structure surface moisture state transistion pressure, being applied to bottom inner surface has the micro- of micro-structure
Channel is divided into two part of theoretical calculation and experiment, specifically includes following steps：
S1：According to the size of the wavelength X of incident laser, fluid refractive index n to be implanted and microchannel, obtain respectively micro-
The interference fringe that the corresponding incident laser of three kinds of channel theoretical work pattern and reflection laser are formed in inside microchannels upper surface
Fringe order k0、k1And k2；The theoretical work pattern includes successively：The stream not being passed through in microchannel in fluid, microchannel
Body is in Wenzel states and is in Cassie states.
The fringe order k of interference fringe is described below0、k1And k2A kind of realization method.
S101：It obtains under different theories operating mode respectively, incident laser and reflection laser are in inside microchannels upper surface
Optical path difference.
It should be noted that incident laser and reflection laser by the difference of distance be referred to as optical path difference, therefore, two beam laser
Interference fringe is formed in inside microchannels upper surface.As optical path difference changes, the transformation between light and shade occurs for interference fringe,
If bright fringe can be gradually varied to dark fringe, if optical path difference variation further increases, dark fringe can become bright fringe again again.
Then when incident laser is from the microchannel external upper vertical incidence inside microchannels lower surface, different theories operating mode
Under, the optical path difference of incident laser and reflection laser in inside microchannels upper surface includes：
S101a：When not being passed through fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser are：
The two of inside microchannels upper surface and both the micro-structure upper surface distance H, the microstructure height h and value
Times.
Referring to Fig. 2, which is a kind of microchannel structure schematic diagram provided in this embodiment.Wherein, p is two neighboring micro- knot
Structure distance between centers, h are microstructure height, and b is micro-structure length, and H is microchannel upper surface at a distance from micro-structure upper surface.
The liquid that refractive index is n is passed through in experiment, in microchannel.When not being passed through fluid in microchannel then, incident laser and reflection laser
Corresponding optical path difference is 2 (H+h).
S101b：When fluid in microchannel is in Wenzel states, incident laser and the corresponding optical path difference of reflection laser
For：
Described and value twice and the refractive index n of product.
Referring to Fig. 3, when which is that the fluid in the present embodiment microchannel is in Wenzel states, incident laser and reflection swash
The corresponding optical path difference schematic diagram of light.Incident laser is only propagated in a fluid, then when the fluid in microchannel is in Wenzel states,
Incident laser and the corresponding optical path difference of reflection laser are 2n (H+h).
S101c：When fluid in microchannel is in Cassie states, incident laser and the corresponding optical path difference of reflection laser
For：
The distance H is multiplied with the refractive index n, and gained product is added twice of gained and value with height h.
Referring to Fig. 4, when which is that the fluid in the present embodiment microchannel is in Cassie states, incident laser and reflection swash
The corresponding optical path difference schematic diagram of light.Incident laser passes sequentially through the gentle body portion of fluid section, then the fluid in microchannel is in
When Cassie states, incident laser and the corresponding optical path difference of reflection laser are 2nH+2h.
S102：Obtain the wavelength X of incident laser, the refractive index n of fluid.
It should be noted that wavelength X=440nm of the present embodiment incident laser.
S103：When according to fluid is not passed through in microchannel, incident laser and the corresponding optical path difference of reflection laser and the wave
Long λ obtains fringe order k0。
It should be noted that when due to not being passed through fluid in microchannel, inside is 1 air full of refractive index, then striped
Series k0It is specific to meet：2 (H+h)=k0λ/2。
S104：When being in Wenzel states according to the fluid in microchannel, incident laser and the corresponding light path of reflection laser
Poor, the described wavelength X and the refractive index n obtain fringe order k1。
Specifically, fringe order k1Meet 2n (H+h)=k1λ/2。
S105：When being in Cassie states according to the fluid in microchannel, incident laser and the corresponding light path of reflection laser
Poor, the described wavelength X and the refractive index n obtain fringe order k2。
Specifically, fringe order k2Meet 2nH+2h=k2λ。
S2：Respectively by fringe order k1And k2With fringe order k0It is poor to make, and obtains corresponding first difference △ k1It is poor with second
Value △ k2。
Specifically, △ k1=k1-k0, △ k2=k2-k0。
S3：Respectively by the first difference △ k1With the second difference △ k2To 2 modulus, corresponding first modulus value m is obtained1With second
Modulus value m2。
It should be noted that in interference fringe, when fringe order differs 1 or odd-multiple, the light and shade journey of interference fringe
Degree is essentially identical, that is to say, that the 1st, 3,5 ... grade stripeds are corresponding to be all bright fringe or be all dark fringe.For example, such as
Corresponding the 1st, 3,5 ... grade striped of fruit is all bright fringe, then it is all dark fringe that the 0th, 2,4 ... grade stripeds are corresponding, i.e., one dark
Striped and a bright fringe constitute a cycle.Since the present embodiment need to only know that light and shade variation occurs for interference fringe, no
Need to know that the reality grade number of interference fringe is poor, then it, can be by the first difference △ k in order to simplify operation1With the second difference △ k2It is right
2 modulus.Meanwhile if the first difference △ k1When to 2 modulus, the first modulus value m1More than 1, then the first modulus value m1It is updated to 2-m1,
Otherwise the first modulus value m1Keep initial value；If the second difference △ k2When to 2 modulus, the second modulus value m2More than 1, then the second modulus value
m2It is updated to 2-m2, otherwise the second modulus value m2Keep initial value.
So far, step S1~S3 completes a kind of judgement side of body structure surface moisture state transistion pressure provided in this embodiment
The theoretical calculation part of method, is described below the experimental section of the present embodiment.
S4：By incident laser from microchannel external upper incidence inside microchannels lower surface so that incident laser
Reflection laser is formed in inside microchannels lower surface.
Optionally, incident laser is blue laser, wavelength X=440nm.
It should be noted that theoretically incident laser can subsequently be walked from any angle incidence microchannel, but in order to simplify
The complexity that optical path difference calculates in rapid, incident laser is from the microchannel external upper vertical incidence microchannel in the present embodiment
Bottom inner surface forms reflection laser, reflection laser and incidence after the reflection of the micro-structure extreme lower position of internally positioned lower surface
Laser meets in inside microchannels upper surface.
S5：Fluid is injected into microchannel and improves the pressure of fluid in microchannel at equal intervals, according to first modulus value
m1With the second modulus value m2Difference △ m sizes, obtain the transformation pressure that the fluid is converted to Wenzel states from Cassie states
Power, wherein if the difference △ m are more than the first given threshold T1, the light and shade fringe position of the interference fringe no longer occurs
Corresponding minimum pressure is the transistion pressure when variation, if the difference △ m are set less than the first given threshold T1 more than second
Determine threshold value T2, then the peak position of the light intensity collection of illustrative plates of the light and shade fringe position and interference fringe of the interference fringe no longer occurs
Corresponding minimum pressure is the transistion pressure when variation.
It should be noted that when Fluid pressure is relatively low, due to surface tension, fluid will not be full of in microchannel
Gap between micro-structure, but with the raising of pressure, the fluid in microchannel can be full of the gap between all micro-structures,
Cassie states switch to Wenzel states completely, then the optical path difference of incident laser and reflection laser will not change again at this time,
It does not also change in the peak position of the position of the interference fringe formed for microchannel upper surface and/or light intensity collection of illustrative plates then.
It should be noted that due to the first modulus value m1It is according to fringe order k1And k0Make what difference obtained, the second modulus value m2It is
According to fringe order k2And k0Make what difference obtained.And fringe order k0It is to be obtained under the illogical fluid state in theoretical microchannel, item
Line series k1It is to be obtained under theoretical Wenzel states, fringe order k2To be obtained under theoretical Cassie states, then striped
Series k0It is equivalent to the basic point that experiment starts, fringe order k2It is equivalent to the basic point that the transformation of micro-structure surface moisture state starts, item
Line series k1It is equivalent to the transformation of micro-structure surface moisture state and completes the basic point terminated.That is, if difference △ m are larger,
Then illustrate that the basic point that the transformation of micro-structure surface moisture state starts differs larger with the basic point that transformation is completed to terminate, then Cassie
The transformation of state to Wenzel states determines it is obvious that interference fringe variation can be observed by the naked eye directly；If difference △ m
It is smaller, then also need to the variation by analyzing light intensity collection of illustrative plates.Optionally, interference fringe can also be observed by microscope, be done
Relating to the light intensity collection of illustrative plates of striped can be obtained by DIIM softwares.
Optionally, the first given threshold T1 is 0.7, and the second given threshold T2 is 0.2.
It should be noted that if the difference △ m be less than the second given threshold T2, such as less than 0.2, due to Cassie states
It is not smaller with the plot of light intensity spectral difference for the interference fringe of Wenzel states presented, therefore the method pair of the present embodiment should not be used
Body structure surface moisture state transistion pressure is judged.
It should be noted that the refractive index of the fluid injected to microchannel in step S5, with theoretical calculation item in step S2
Line series k0、k1And k2The refractive index of the fluid of Shi Caiyong is identical.
When the difference △ m are described below more than the first given threshold T1, by improving fluid in microchannel at equal intervals
Pressure obtains a kind of realization method of transistion pressure：
The refractive index for being passed through certain flow rate in microchannel with low pressure P1 records for the fluid of n in interference fringe at this time
Light and shade fringe position；Pump-in pressure is gradually increased to P2 (△ P=P2-P1) to set interval △ P, records at this time dry again
Relate to the light and shade fringe position in image；Above step is repeated, pump-in pressure is improved to P3, P4, P5 with the interval of △ P every time,
P6 ... ..., and light and shade position in corresponding interference fringe is recorded, until the light and shade fringe position of interference fringe no longer becomes
Change, then corresponding minimum pressure is that fluid is converted to the transistion pressures of Wenzel states from Cassie states at this time.
Can similarly obtain the difference △ m less than the first given threshold T1 be more than the second given threshold T2 when, pass through
The pressure of fluid in microchannel, the method for obtaining transistion pressure are improved in interval, and the present embodiment does not repeat this.
Certainly, the invention may also have other embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding change and deformations can be made according to the present invention certainly by knowing those skilled in the art, but these it is corresponding change and
Deformation should all belong to the protection domain of appended claims of the invention.
Claims (5)
1. a kind of judgment method of body structure surface moisture state transistion pressure, being applied to bottom inner surface has the micro- logical of micro-structure
Road, which is characterized in that include the following steps：
According to the size of the wavelength X of incident laser, fluid refractive index n to be implanted and microchannel, microchannel three is obtained respectively
The striped for the interference fringe that the corresponding incident laser of kind theoretical work pattern and reflection laser are formed in inside microchannels upper surface
Series k0、k1And k2；The theoretical work pattern includes successively：The fluid not being passed through in fluid, microchannel in microchannel is in
Wenzel states and be in Cassie states；
Respectively by fringe order k1And k2With fringe order k0It is poor to make, and obtains corresponding first difference △ k1With the second difference △ k2；
Respectively by the first difference △ k1With the second difference △ k2To 2 modulus, corresponding first modulus value m is obtained1With the second modulus value m2；
By incident laser from microchannel external upper incidence inside microchannels lower surface so that incident laser is in microchannel
Bottom inner surface forms reflection laser；
Fluid is injected into microchannel and improves the pressure of fluid in microchannel at equal intervals, according to the first modulus value m1With second
Modulus value m2Difference △ m sizes, obtain the transistion pressure that the fluid is converted to Wenzel states from Cassie states, specifically
For if the difference △ m are more than the first given threshold T1, when the light and shade fringe position of the interference fringe no longer changes
Corresponding minimum pressure is the transistion pressure；If the difference △ m are less than the first given threshold T1 and are more than the second given threshold
T2, the then when peak position of the light intensity collection of illustrative plates of the light and shade fringe position and interference fringe of the interference fringe no longer changes
Corresponding minimum pressure is the transistion pressure.
2. the method as described in claim 1, which is characterized in that the fringe order k of the interference fringe0、k1And k2Acquisition
Method includes：
It obtains under different theories operating mode respectively, the optical path difference of incident laser and reflection laser in inside microchannels upper surface；
Obtain the wavelength X of incident laser, the refractive index n of fluid；
When according to not being passed through fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser and the wavelength X obtain item
Line series k0；
When being in Wenzel states according to the fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser, the wave
The long λ and refractive index n obtains fringe order k1；
When being in Cassie states according to the fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser, the wave
The long λ and refractive index n obtains fringe order k2。
3. method as claimed in claim 2, which is characterized in that respectively obtain different theories operating mode under, incident laser and
Optical path difference of the reflection laser in inside microchannels upper surface include：
When not being passed through fluid in microchannel, incident laser and the corresponding optical path difference of reflection laser are：2(H+h)；
Wherein, H be inside microchannels upper surface at a distance from the micro-structure upper surface, h be the microstructure height；
When fluid in microchannel is in Wenzel states, incident laser and the corresponding optical path difference of reflection laser are：2n(H+h)；
When fluid in microchannel is in Cassie states, incident laser and the corresponding optical path difference of reflection laser are：2nH+2h.
4. the method as described in claim 1, which is characterized in that if the first difference △ k1When to 2 modulus, the first modulus value m1
More than 1, then the first modulus value m1It is updated to 2-m1, otherwise the first modulus value m1Keep initial value；
If the second difference △ k2When to 2 modulus, the second modulus value m2More than 1, then the second modulus value m2It is updated to 2-m2, otherwise second
Modulus value m2Keep initial value.
5. the method as described in claim 1, which is characterized in that the first given threshold T1 is 0.7, the second setting threshold
Value T2 is 0.2.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216406A (en) * | 2008-01-17 | 2008-07-09 | 江苏大学 | Energy analysis based stable ultra-hydrophobic surface controllable design method |
| US20100112286A1 (en) * | 2008-11-03 | 2010-05-06 | Bahadur Vaibhav A | Superhydrophobic surfaces |
| US20100176304A1 (en) * | 2006-04-03 | 2010-07-15 | Nikon Corporation | Incidence surfaces and optical windows that are solvophobic to immersion liquids |
| CN102366712A (en) * | 2011-10-09 | 2012-03-07 | 中国科学院宁波材料技术与工程研究所 | Method for modifying microporous membrane wettability by utilizing low pressure-forced Cassie state effect |
| CN102690128A (en) * | 2012-06-01 | 2012-09-26 | 大连海事大学 | Regulating device and method for super hydrophobic surface wettability |
-
2018
- 2018-03-12 CN CN201810199768.4A patent/CN108680464B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100176304A1 (en) * | 2006-04-03 | 2010-07-15 | Nikon Corporation | Incidence surfaces and optical windows that are solvophobic to immersion liquids |
| CN101216406A (en) * | 2008-01-17 | 2008-07-09 | 江苏大学 | Energy analysis based stable ultra-hydrophobic surface controllable design method |
| US20100112286A1 (en) * | 2008-11-03 | 2010-05-06 | Bahadur Vaibhav A | Superhydrophobic surfaces |
| CN102366712A (en) * | 2011-10-09 | 2012-03-07 | 中国科学院宁波材料技术与工程研究所 | Method for modifying microporous membrane wettability by utilizing low pressure-forced Cassie state effect |
| CN102690128A (en) * | 2012-06-01 | 2012-09-26 | 大连海事大学 | Regulating device and method for super hydrophobic surface wettability |
Non-Patent Citations (4)
| Title |
|---|
| ROSA DI MUNDO: "Cassie state robustness of plasma generated randomly nano-rough surfaces", 《APPLIED SURFACE SCIENCE》 * |
| THOMAS LEE: "Interfacial slip on rough, patterned and soft surfaces: A review of experiments and simulations", 《ADVANCES IN COLLOID AND INTERFACE SCIENCE》 * |
| 王四芳: "超疏水表面混合蒸气滴状冷凝液滴行为与传热", 《中国博士学位论文全文数据库工程科技Ⅱ辑》 * |
| 马学虎等: "舞动的液滴：界面现象与过程调控", 《化工学报》 * |
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