CN106526722B - A kind of method for controlling miniature droplets shape - Google Patents

A kind of method for controlling miniature droplets shape Download PDF

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Publication number
CN106526722B
CN106526722B CN201610982269.3A CN201610982269A CN106526722B CN 106526722 B CN106526722 B CN 106526722B CN 201610982269 A CN201610982269 A CN 201610982269A CN 106526722 B CN106526722 B CN 106526722B
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China
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regular
dimensional material
material fragment
shape
miniature droplets
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CN201610982269.3A
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CN106526722A (en
Inventor
肖思
范琦
王刚
王鹏
何军
杨英
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Central South University
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Central South University
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Cosmetics (AREA)
  • Toys (AREA)

Abstract

A kind of method for controlling miniature droplets shape, comprises the following steps：（1）The homogeneous regular two-dimensional material fragment powder of selected shape；（2）Regular two-dimensional material fragment powder is mixed with organic solvent or water, is sealed, vibration, obtains regular two-dimensional material fragment organic solvent aaerosol solution or regular two-dimensional material fragment aqueous suspension solution；（3）By step（2）Gained regular two-dimensional material fragment organic solvent aaerosol solution or regular two-dimensional material fragment aqueous suspension solution are titrated on sheet glass and sample are made, and annealing, obtains the miniature droplets identical with regular two-dimensional material fragment shape.The present invention utilizes the shape of regular two-dimensional material fragment, controls the shape of miniature droplets, can obtain micron-sized drop, volume is far smaller than common miniature droplets, and thickness is less than 1 micron.

Description

A kind of method for controlling miniature droplets shape
Technical field
The present invention relates to a kind of method for controlling miniature droplets shape, and in particular to one kind utilizes regular two-dimensional material fragment The method that shape controls miniature droplets shape.
Background technology
Two-dimensional material refers to that electronics only can be in the non-nanosize of two dimensions（1-100nm）Upper free movement（Plane is transported It is dynamic）Material, since two-dimensional material is easily-synthesized, cost is relatively low, it is using wide.
Usually seen drop is usually macroscopic grade, subglobular, because there are phase interaction between molecule Firmly, the molecule in surface, has other molecules to be acted on it towards inside points, and part is acted on without molecule with it outwardly, therefore The intermolecular force of this moieties diminishes, and energy can be raised, in order to reduce energy rise, it is desirable to surface molecular number Amount is more few better, that is, reduces surface area, and in all shapes, spherical volume is maximum, in other words, in same volume When, spherical surface area is minimum, here it is drop it is spherical in shape the reason for.And drop is smaller, shape is just closer spherical, because If drop is bigger, its surface tension is relative to its gravity with regard to smaller, it might even be possible to ignores.
The shape of the shape, especially miniature droplets of drop is thus controlled, obtains other shapes such as triangle, square Deng drop, just it is relatively difficult.
The content of the invention
The technical problems to be solved by the invention are to overcome the deficiencies of the prior art and provide a kind of control miniature droplets shape The method of shape.
The present invention will further solve the problems, such as to be to provide that a kind of preparation process is simple, can obtain the control of different shape drop The method of miniature droplets shape processed, gained drop stability are good.
The technical solution adopted by the present invention to solve the technical problems is a kind of method for controlling miniature droplets shape, bag Include following steps：
（1）The homogeneous regular two-dimensional material fragment powder of selected shape；
The regular two-dimensional material fragment powder, it is usually used for molybdenum disulfide, graphene etc..
Further, step（1）In, the regular two-dimensional material fragment shape of selection and obtained miniature droplets shape are protected Hold unanimously, can be triangle, quadrangle etc., its length of side is 5 ~ 15 μm.（If regular two-dimensional material fragment shape is triangle Shape, then the miniature droplets shape of final gained is triangle）.
（2）Regular two-dimensional material fragment powder is mixed with organic solvent or water, is sealed, vibration, obtains regular two-dimensional material Fragment-organic solvent aaerosol solution or regular two-dimensional material fragment-aqueous suspension solution；
（3）By step（2）Gained regular two-dimensional material fragment-organic solvent aaerosol solution or regular two-dimensional material fragment- Aqueous suspension solution, which is titrated on sheet glass, is made sample, and annealing, there are molten between regular two-dimensional material fragment and substrate Liquid, the drop that it is formed is identical with the shape of regular two-dimensional material fragment, obtains identical with regular two-dimensional material fragment shape Miniature droplets.
Further, step（2）In, the amount of regular two-dimensional material fragment powder is 0.08 ~ 0.12g, organic solvent or water Measure as 50 ~ 60ml.
Further, step（2）In, the organic solvent is ethanol, tetrahydrofuran（THF）Or N,N-dimethylformamide （DMF）.
Further, step（2）In, 40 DEG C of concussion temperature ＜（Preferably 25 DEG C ~ 35 DEG C）, frequency 35kHz ~ 40kHz.When adopting During with organic solvent, the concussion time is 3 ~ 3.5h.When using water as solvent, time >=60h is shaken.
Further, step（3）In, the sheet glass is transparent smooth flat carrier.By step（2）Gained regular two-dimensional material Material fragment-organic solvent aaerosol solution or regular two-dimensional material fragment-aqueous suspension solution are titrated on sheet glass, and every time 3~4 Drop.
Further, step（3）In, the temperature of annealing is 65 ~ 75 DEG C, and the time is 3 ~ 5 minutes.
Further, step（3）In, when preparing sample, substrate selects transparent smooth K9 glass substrates, and K9 glass is done Substrate is of low cost, while the convenient experiment for further using probe operation.
Step of the present invention（1）In, choose regular two-dimensional material fragment of different shapes, it may be possible to triangle or square Deng, so conveniently obtain produce miniature droplets shape, the length of side is preferably 5 ~ 15 μm；Because the drop less than 5 μm is not easy to be formed, And the excessive drop of area is difficult to control easily by Influence of Evaporation.
Step（2）In, the control concussion time, is the temperature in order to obtain the regular two-dimensional material fragment suspension being evenly distributed Degree must not exceed 40 DEG C, and temperature is excessive easily to influence dispersion effect, makes sample distribution uneven, and can damage instrument.
Step（3）In, during annealing, the large area evaporation of the solvent of titration, regular two-dimensional material fragment and substrate gaps Between liquid keep down, you can obtain the homogeneous miniature droplets of shape.Pass through step（3）In, we can observe that two The color fringe of material is tieed up, miniature droplets between regular two-dimensional material fragment and substrate may determine that by the spacing of color fringe Whether thickness is smooth, and the thickness of drop can be calculated by equal thick interference fringe.
The present invention utilizes the shape of regular two-dimensional material fragment, controls the shape of miniature droplets, can obtain micron-sized Drop, volume is far smaller than common miniature droplets, and thickness is less than 1 micron.This method is unique, we can pass through control The shape of two-dimensional material fragment processed, controls the shape of miniature droplets, and then obtains variously-shaped miniature droplets.It can be used for making Make the liquid crystal micro box of solution；Miniature condenser lens etc. can also be made by controlling the shapes of miniature droplets.
The present invention has the following advantages：
（1）The present invention controls the shape of miniature droplets by controlling the shape of regular two-dimensional material fragment, than direct Control droplet profile much simpler.Since two-dimensional material has stronger heat endurance, annealing can be admirably protected When miniature droplets be not vaporized, and then protect miniature droplets shape.
（2）The shape of regular two-dimensional material fragment has diversity, and exploitativeness is strong, and then to obtain various different shapes Miniature droplets provide it is convenient.
（3）Optical microscope photograph is shot to prepared regular two-dimensional material fragment, has striped on gained photo, be by Caused by equal thickness interference, it was found from the regularity of striped, liquid is smooth in gap prepared by the method for the present invention, and distribution has rule Property, the thickness of miniature droplets can be proved by color fringe, liquid can be calculated using color fringe and film size size The size of drop volume.
Brief description of the drawings
Fig. 1 is used to drop in the MoS in substrate before annealing for the embodiment of the present invention 12Triangular fragments-alcohol suspension shows It is intended to；
Fig. 2 is the schematic diagram of 1 annealing process of the embodiment of the present invention；
Fig. 3 and Fig. 4 is the triangle that the embodiment of the present invention 1 is used for after the completion of annealing（MoS2- ethanol）Miniature droplets show It is intended to.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figs 1-4, the present embodiment comprises the following steps：
（1）Take the triangle molybdenum disulfide that the 0.1g length of sides are 5 ~ 15 μm（MoS2）Powder；
（2）By the triangle MoS that the 0.1g length of sides are 5 ~ 15 μm2Powder is mixed with 60ml ethanol, sealing, in supersonic oscillations 3h is vibrated in device, frequency 38kHz, 30 DEG C of temperature, obtains MoS2Triangular fragments-alcohol suspension；
（3）By step（2）The MoS of gained2Triangular fragments-alcohol suspension is vertically titrated to hyaline smooth K9 glass On sample is made, every time three to four drop, uniform fold K9 glass（That is glass slide）, obtain MoS2- ethanol film；Finally by MoS2- second Alcohol film is placed in 70 DEG C of annealing 3min on baker, and triangle MoS is made2Film, film are micro- by triangle of lower part Type drop.
In the present embodiment, the molybdenum disulfide Color Interfering Fringes By Use that can be evenly distributed illustrates molybdenum disulfide and substrate Between even droplet distribution it is smooth, that is, obtain the drop of regular shape.
Embodiment 2
The present embodiment comprises the following steps：
（1）Take the square molybdenum disulfide that the 0.1g length of sides are 5 ~ 15 μm（MoS2）Powder；
（2）Take the square MoS that the 0.1g length of sides are 5 ~ 15 μm2Powder and 60ml tetrahydrofurans（THF）Mixing, sealing, 3h is vibrated in ultrasonic oscillator, frequency 38kHz, 30 DEG C of temperature, obtains MoS2Square fragment-THF suspension；
（3）By the MoS of gained2Square fragment-THF suspension is vertically titrated on hyaline smooth K9 glass and sample is made Product, three to four drip every time, and uniform fold glass slide, obtains MoS2- THF films；Finally by MoS2- THF films are placed in 70 on baker DEG C annealing 3min, square MoS is made2Film, film is using lower part as square miniature droplets.
In the present embodiment, the molybdenum disulfide Color Interfering Fringes By Use that can be evenly distributed illustrates molybdenum disulfide and substrate Between even droplet distribution it is smooth, that is, obtain the drop of regular shape.
Embodiment 3
The present embodiment comprises the following steps：
（1）Take the triangle graphene powder that the 0.1g length of sides are 5 ~ 15 μm；
（2）The triangle graphene powder and 60mlN that the 0.1g length of sides are 5 ~ 15 μm are taken, dinethylformamide (DMF) is mixed Close, sealing, 3h is vibrated in ultrasonic oscillator, frequency 38kHz, 30 DEG C of temperature, obtains graphene triangular fragments-DMF suspensions Liquid；
（3）Graphene triangular fragments-DMF the suspension of gained is vertically titrated on hyaline smooth K9 glass and is made Sample, three to four drip every time, uniform fold glass slide；Graphene-DMF films are finally placed in 70 DEG C of annealings on baker 5min, is made triangle graphene film, film is using lower part as triangle miniature droplets.
In the present embodiment, the graphene Color Interfering Fringes By Use that can be evenly distributed illustrates between graphene and substrate Even droplet distribution it is smooth, that is, obtain the drop of regular shape.
Embodiment 4
The present embodiment comprises the following steps：
（1）Take the triangle molybdenum disulfide that the 0.1g length of sides are 5 ~ 15 μm（MoS2）Powder；
（2）By the triangle MoS that the 0.1g length of sides are 5 ~ 15 μm2Powder is mixed with 60ml water, sealing, in ultrasonic oscillator Middle vibration 60h, frequency 38kHz, 30 DEG C of temperature, obtain MoS2Triangular fragments-water slurry；
（3）By step（2）The MoS of gained2Triangular fragments-water slurry is vertically titrated on hyaline smooth K9 glass Sample is made, every time three to four drops, uniform fold K9 glass（That is glass slide）, obtain MoS2- water film；Finally by MoS2- water film 70 DEG C of annealing 5min on baker are placed in, triangle MoS is made2Film, film is using lower part as triangle miniature droplets.
In the present embodiment, the molybdenum disulfide Color Interfering Fringes By Use that can be evenly distributed illustrates molybdenum disulfide and substrate Between even droplet distribution it is smooth, that is, obtain the drop of regular shape.
Comparative example 1：
（1）Take the triangle molybdenum disulfide that the 0.1g length of sides are 5 ~ 15 μm（MoS2）Powder；
（2）Take the triangle MoS that the 0.1g length of sides are 5 ~ 15 μm2Powder is mixed with 60ml ethanol, sealing, in supersonic oscillations 3h is vibrated in device, frequency 38kHz, 30 DEG C of temperature, obtains MoS2Triangular fragments-alcohol suspension；
（3）By the MoS of gained2Triangular fragments-alcohol suspension is vertically titrated on hyaline smooth K9 glass and is made Sample, three to four drip every time, uniform fold glass slide；Finally by MoS2- ethanol film is placed in 70 DEG C of integrally annealeds on baker 15min is handled, triangle MoS is made2Film, since the following drop of the long film of annealing time evaporates, can not obtain micro- Type drop.
It can be learnt by comparative example, step（3）Middle annealing 15 minutes, i.e., after integral high-temperature is dried 15 minutes, molybdenum disulfide is color Vitta line broadens even partial disappearance, illustrates that the gap between molybdenum disulfide and substrate diminishes, i.e., molybdenum disulfide and substrate it Between liquid disappear, cause the shape of miniature droplets uncontrollable.

Claims (9)

  1. A kind of 1. method for controlling miniature droplets shape, it is characterised in that comprise the following steps：
    （1）The homogeneous regular two-dimensional material fragment powder of selected shape；
    （2）Regular two-dimensional material fragment powder is mixed with organic solvent or water, seal, vibration, obtain regular two-dimensional material fragment- Organic solvent suspension or regular two-dimensional material fragment-water slurry；
    （3）By step（2）Gained regular two-dimensional material fragment-organic solvent suspension or regular two-dimensional material fragment-aqueous suspension Liquid, which is titrated on sheet glass, is made sample, and annealing, there are drop, its shape between regular two-dimensional material fragment and sheet glass Into drop it is identical with the shape of regular two-dimensional material fragment, obtain the miniature liquid identical with regular two-dimensional material fragment shape Drop.
  2. 2. the method for control miniature droplets shape according to claim 1, it is characterised in that step（1）In, the rule Two-dimensional material fragment powder, is molybdenum disulfide or graphene.
  3. 3. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（1）In, it is described Regular two-dimensional material fragment shape is consistent with obtained miniature droplets shape, its length of side is 5 ~ 15 μm.
  4. 4. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（2）In, rule The amount of two-dimensional material fragment powder is 0.08 ~ 0.12g, and the amount of organic solvent or water is 50 ~ 60ml.
  5. 5. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（2）In, it is described Organic solvent is ethanol, tetrahydrofuran or N,N-dimethylformamide.
  6. 6. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（2）In, concussion 40 DEG C of temperature ＜, frequency 35kHz ~ 40kHz；When using organic solvent, the concussion time is 3 ~ 3.5h；When use water is as solvent When, shake time >=60h.
  7. 7. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（3）In, it is described Sheet glass is transparent smooth flat carrier, by step（2）Gained regular two-dimensional material fragment-organic solvent suspension or rule two Dimension material fragment-water slurry is titrated on sheet glass, every time 3~4 drop.
  8. 8. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（3）In, annealing The temperature of processing is 65 ~ 75 DEG C, and the time is 3 ~ 5 minutes.
  9. 9. the method for control miniature droplets shape according to claim 1 or 2, it is characterised in that step（3）In, prepare During sample, sheet glass selects transparent smooth K9 glass substrates.
CN201610982269.3A 2016-11-09 2016-11-09 A kind of method for controlling miniature droplets shape Expired - Fee Related CN106526722B (en)

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CN110787852B (en) * 2019-11-15 2021-09-24 大连理工大学 Preparation method of stainless steel net capable of limiting water drop shape

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1490635A (en) * 2002-09-25 2004-04-21 ������������ʽ���� Optical component and producing method thereof, lenticule substrate and producing method thereof, displaying device, camera component
CN1534312A (en) * 2003-03-31 2004-10-06 朗迅科技公司 Method and device for controlling liquid motion on surface of ultrafine structure or microstructure
CN102033499A (en) * 2009-09-28 2011-04-27 中国科学院空间科学与应用研究中心 System and method for automatically controlling liquid droplet volume

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7601386B2 (en) * 2003-07-11 2009-10-13 Seiko Epson Corporation Process for forming a film, process for manufacturing a device, electro-optical device and electronic equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1490635A (en) * 2002-09-25 2004-04-21 ������������ʽ���� Optical component and producing method thereof, lenticule substrate and producing method thereof, displaying device, camera component
CN1534312A (en) * 2003-03-31 2004-10-06 朗迅科技公司 Method and device for controlling liquid motion on surface of ultrafine structure or microstructure
CN102033499A (en) * 2009-09-28 2011-04-27 中国科学院空间科学与应用研究中心 System and method for automatically controlling liquid droplet volume

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