CN119401853A - A non-fusion control system and control method for charged droplets in an open environment - Google Patents
A non-fusion control system and control method for charged droplets in an open environment Download PDFInfo
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- CN119401853A CN119401853A CN202510000389.8A CN202510000389A CN119401853A CN 119401853 A CN119401853 A CN 119401853A CN 202510000389 A CN202510000389 A CN 202510000389A CN 119401853 A CN119401853 A CN 119401853A
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Abstract
The invention relates to the field of electrohydrodynamic technology, and particularly provides a charged droplet unfused regulation and control system and a control method based on an open environment, wherein the regulation and control system comprises a direct-current high-voltage source, an injection pump, a capillary probe and a dielectric property nanometer ultramicro electrode, and the unfused system of charged fluids with different polarities under the open environment is formed on the basis of electrohydrodynamic regulation by utilizing voltages with different polarities; the control method comprises the steps that in an open system, water containing the dielectric nano-ultramicroelectrode is dissolved, liquid is injected through a syringe pump at a specific flow rate, under a specific space distance, by means of electrohydrodynamic properties formed by a capillary probe applying high-voltage power supplies with different polarities, liquid drops with opposite polarities at the tip of the probe form a meniscus bridge at the liquid contact end under the action of Taylor cone sheath stress.
Description
Technical Field
The invention relates to the field of electrofluid dynamics, in particular to a control system and a control method based on charged liquid drop unfused in a development environment.
Background
Electrohydrodynamic (Electrohydro Dynamics, EHD for short), which is an edge discipline between hydrodynamics and electrodynamics, studies the interaction of a unipolar charged fluid or polarized fluid with an electric field. The important basic content of electrohydrodynamic of the electrostatic atomization chamber can obtain a large number of fine and fine charged micro-droplets with good monodispersity, strong controllability and high deposition rate with lower energy consumption, and has huge potential in the fields of micro/nano electronic device manufacturing, micro combustion, air purification, space micro-power propulsion, bioengineering and the like.
The complex charged multiphase flow generated by electrostatic atomization and application process summarization widely has important phenomena of deformation, crushing, fusion, separation and the like of charged liquid drops, the electrohydrodynamic characteristics under a coupling field are extremely complex, and particularly, the stability problem of a jet flow mode and the dynamic behavior research of the phase separation of the charged liquid drops have great application potential and value. At present, research and application of unfused charged liquid drops are hot topics of electrohydrodynamic technology, and a prominent difficulty in the research field is that the unfused phenomenon of the charged liquid drops cannot be observed on a second scale, so that the development of technologies in the field is restricted.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The invention provides a regulation and control system for unfused charged liquid drops, which aims to solve the problem that unfused charged liquid drops cannot be observed in a second scale, and provides a new visual angle and a new application scene for potential application of unfused charged liquid drops.
In order to achieve the purpose, the invention provides the technical scheme that the charged liquid drop unfused regulation and control system is based on an open environment.
A regulation and control system based on charged droplet unfused in an open environment comprises a direct-current high-voltage source, an injection pump, a capillary probe and a dielectric property nanometer ultramicro electrode;
The direct-current high-voltage source is used for generating high voltage, generating electric field force on the liquid containing the dielectric nano ultramicro electrode, and enabling the electric field force and the fluid sheath stress to form a Taylor cone at the tip of the capillary probe when the electric field force and the fluid sheath stress reach an equilibrium state;
The injection pump is used for pumping the liquid containing the dielectric nano ultramicro electrode into the capillary probe according to a certain flow rate;
The tip of the capillary probe is provided with a micron-sized hole structure, so that the laminar flow of the fluid is converted into turbulent flow;
the dielectric nano ultramicroelectrode is used for forming a meniscus bridge by the Taylor cone under the action of different polarities at a specific distance;
The direct-current high-voltage source is divided into a direct-current high-voltage source I and a direct-current high-voltage source II, the capillary probe is divided into a capillary probe I and a capillary probe II, the direct-current high-voltage source I applies voltage to the capillary probe I, the direct-current high-voltage source II applies voltage to the capillary probe II, and a gap is reserved between the tips of the capillary probe I and the capillary probe II.
Further, the number of the capillary probes is two, the distance between the tips of the capillary probes of the two capillary probes is 15-70 mu m, and the included angle between the capillary probes is 70-180 degrees.
Further, the capillary probe inner diameter size is 100-350 μm.
The invention also provides a control method based on the charged droplet unfused regulation and control system in the open environment, which comprises the following steps:
S1, mixing water and a dielectric nano-microelectrode to obtain an aqueous solution containing the dielectric nano-microelectrode;
s2, the aqueous solution in the step S1 is input into a capillary probe through a delivery pump, and a direct-current high-voltage source is applied to the tip of the capillary probe;
S3, regulating the polarity and voltage value of a direct-current high-voltage source, setting the flow rate of a conveying pump, and regulating the tip distance and the tip included angle of a probe;
S4, enabling the aqueous solution containing the dielectric nano-ultramicroelectrode to form a Taylor cone at the tip of the capillary probe, and forming a meniscus bridge between two Taylor stacks, so that the meniscus bridge lasts for a period of time ranging from a few seconds to a few minutes.
Further, the voltage of the direct current high voltage source in the step S3 is 0.5-10 kV.
Further, in the step S3, the inner diameter size of the capillary probe is 100-350 mu m, the tip distance of the capillary probe is 15-70 mu m, and the included angle between the capillary probes is 70-180 degrees.
Further, the solution flow rate of the dielectric nano-ultramicroelectrode solution in the S3 is 10-200 mu L/min, the particle size of the material of the dielectric nano-ultramicroelectrode is 20-80 nm, and the average particle number distribution is 50-1000.
Further, in the step S3, two capillary probes are respectively applied with direct current high voltages with different polarities, and charged liquid drops are formed by means of the electrohydrodynamic principle.
Further, the difference of direct current high voltages with different polarities applied by the two capillary probes is 0.5-3.0kV, the formation of a meniscus bridge is in a critical state that a stable taylor cone and electrospraying form charged micro-droplets, the taylor cone under positive and negative polarity conditions forms attractive force under a specific control distance to form a stable taylor cone, and the taylor cones with different polarities which are mutually attracted form a fused meniscus bridge at the tip.
Furthermore, the nano-ultramicroelectrodes with dielectric properties in the solution in the meniscus bridge form electrophoresis under the action of potential difference, and are arranged in a directional way to be communicated with the meniscus bridge.
The principle of the invention is that the unfused system and the control method of the charged fluid with different polarities under the open environment are formed by utilizing the high voltage with different polarities on the basis of electrohydrodynamic regulation, wherein the high voltage is used for forming a Taylor cone when the electric field force and the fluid sheath stress of the probe tip to the liquid reach an equilibrium state by virtue of the hydrodynamic property.
The liquid containing the dielectric nano ultramicroelectrode is pumped into the capillary probe by regulating and controlling a certain flow rate, and the liquid is transported under the drive of a specific flow rate and the characteristics of an electric field are given to the liquid in a liquid laminar flow region.
By means of the micron-sized pore structure of the probe tip, a special fluid transmission mode of the sheath stress with vortex disturbance effect against the electric field stress is formed in the process of converting the fluid laminar flow into the turbulent flow.
The dielectric nano-microelectrode is used for forming a meniscus bridge by the Taylor cone under the action of different polarities at a specific distance.
The liquid supporting the meniscus bridge has special conductivity, and the liquid contains the dielectric property ultrafine nano material which has high-efficiency electron transmission capability as a microelectrode.
The formation of the meniscus bridge is in a critical state that the taylor cone is stabilized and the charged micro-droplets are formed by electrospray, the taylor cone under the positive and negative polarity conditions forms attractive force under a specific control distance to form a steady-state taylor cone, and the taylor cones with different polarities which are mutually attracted form a fused meniscus bridge at the tip.
The dielectric nano-ultramicroelectrode material in the solution forms electrophoresis phenomenon under the action of potential difference to form microelectrodes communicated with the meniscus bridge.
The communicated meniscus bridge has both an energy field effect and a material change effect, wherein the energy field effect is derived from the communicated effect of the direct current high voltage, and the material change effect is derived from the directional migration of the material under the action of the potential field.
The energy field effect and the material change effect are not mainly controlled by the influence of the liquid gravity field, and the determining factors depend on the dielectric property of the liquid, the probe tip distance and the period rate of the direct current high voltage change.
The duration of the meniscus bridge is an essential prerequisite for energy transfer and rapid migration of substances.
Compared with the prior art, the invention has the beneficial effects that in an open environment instead of a closed two-phase liquid environment, not only is the second-level unfused of charged liquid drops with different polarities realized, but also the effective charge transmission and the efficient material transfer are promoted by introducing the dielectric nano ultramicro electrode, so that the further application potential of the unfused charged liquid drops is further expanded. The method comprises the following steps:
according to the invention, the capillary probe with a spraying function is horizontally arranged in an open environment, so that the phenomenon of unfused charged liquid drops mediated by gravity factors can be effectively eliminated, only electric field force and sheath stress caused by liquid vortex are focused in unfused factor analysis, and theoretical construction analysis factors are simplified.
The development and occurrence process of unfused charged liquid drops are recorded on a second-to-minute time scale through a high-speed camera for the first time.
The invention has potential application in energy transfer and substance transfer by adding charge transfer characteristic of the dielectric nano-ultramicro electrode into the solution.
The invention can realize Taylor cone-meniscus bridge-fine electrostatic atomization rapid switching by regulating and controlling different space distances, voltage values and polarities.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present disclosure, and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram of a charged droplet unfused system architecture according to an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of Taylor cone electrospray with full open DC high voltage in accordance with an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of Taylor cone electrospray with DC high voltage left half on in an embodiment of the present disclosure;
FIG. 4 is a schematic illustration of Taylor cone electrospray with DC high voltage right half on condition according to an embodiment of the present disclosure;
FIG. 5 is a schematic illustration of Taylor cone-meniscus bridge formation at different distances (d 1) under DC high voltage full off conditions in accordance with an embodiment of the present disclosure;
FIG. 6 is a schematic illustration of Taylor cone-meniscus bridge formation at different distances (d 2) for a DC high voltage full open condition in accordance with an embodiment of the present disclosure;
FIG. 7 is a schematic illustration of Taylor cone-meniscus bridge formation at different distances (d 3) with DC high pressure opening in accordance with an embodiment of the present disclosure
FIG. 8 is a diagram of a transmission electron microscope (scale 5 μm) of a dielectric nano-microelectrode material according to the embodiment of the present disclosure
FIG. 9 is a diagram of a transmission electron microscope (scale is 100 nm) of a dielectric nano-microelectrode material according to an embodiment of the present disclosure
FIG. 10 is a taylor cone-meniscus bridge imaging graph based on a 5 second time scale captured dielectric nano-microelectrode effect in accordance with an embodiment of the present disclosure;
FIG. 11 is a Taylor cone-meniscus bridge imaging graph of a dielectric nano-microelectrode effect captured based on a12 second time scale in accordance with an embodiment of the present disclosure;
FIG. 12 is a Taylor cone-meniscus bridge imaging graph of a dielectric nano-microelectrode effect captured based on a 14 second time scale in accordance with an embodiment of the present disclosure;
FIG. 13 is a Taylor cone-meniscus bridge imaging graph of a dielectric nano-microelectrode effect captured based on a 38 second time scale in accordance with an embodiment of the present disclosure;
FIG. 14 is a Taylor cone-meniscus bridge imaging graph captured for 3 seconds based on the voltage difference effect in accordance with an embodiment of the present disclosure;
FIG. 15 is a Taylor cone-meniscus bridge imaging graph captured at 8 seconds based on a voltage difference effect in accordance with an embodiment of the present disclosure;
FIG. 16 is a Taylor cone-meniscus bridge imaging graph captured for 15 seconds based on a voltage difference effect in accordance with an embodiment of the present disclosure;
Fig. 17 is a taylor cone-meniscus bridge imaging graph captured at 53 seconds based on the voltage difference effect in an embodiment of the present disclosure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The numbers in this embodiment, i.e. the figures, are only used as schematic illustrations and are not intended to limit the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without undue burden are within the scope of the invention. The specific conditions are not noted in this example, and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used are not manufacturer-specific and are commercially available conventional products, and the capillary probes in this example are specially prepared.
The following specifically describes a charged droplet unfused regulation and control system and method based on an open environment according to an embodiment of the present disclosure.
Fig. 1 shows a block diagram of a control system based on charged droplet unfused in an open environment according to the present invention. The electric droplet non-fusion regulator device comprises a direct-current high-voltage source I, a direct-current high-voltage source II, a capillary probe I, a capillary probe II, an injection pump and the like. The direct current high voltage source directly applies voltage to the first capillary probe, the direct current high voltage source directly applies voltage to the second capillary probe, the first capillary probe and the second capillary probe are connected with the injection pump, the diameter of the first capillary probe is the diameter I, the diameter of the second capillary probe is the diameter II, the flow rate of the aqueous solution containing the dielectric nano-ultramicro electrode material in the first capillary probe is the flow rate I, the flow rate of the aqueous solution containing the dielectric nano-ultramicro electrode material in the second capillary probe is the flow rate II, the direct current high voltage applied to the first capillary probe and the second capillary probe has different polarities, and black spheres are charged liquid drops at the top end of the capillary probe in the figure.
In the embodiment, a direct-current high-voltage source I and a direct-current high-voltage source II are respectively applied to the capillary probe I and the capillary probe II, under the condition of direct-current high-voltage on/off, a Taylor cone I and a Taylor cone II are respectively formed at the top ends of the capillary probe I and the capillary probe II, and electrospraying is formed between the Taylor cones;
in an exemplary embodiment of the invention, the distance between the spraying ends of the first capillary probe and the second capillary probe is 0-40 mm.
Further, an included angle between the first capillary probe and the second capillary probe is 70-180 degrees. More preferably, in this embodiment, the angles between the first and second capillary probes are all 100-180 °.
Further, the inner diameter dimension of the first capillary probe and the second capillary probe is 10-350 μm. The inner diameter sizes of the first capillary probe and the second capillary probe can be the same or different. More preferably, in this embodiment, the inner diameter dimension of the first and second capillary probes is 50-160 μm.
Further, the direct-current high voltage applied by the first capillary probe and the second capillary probe is 0.5-10 kV, and the polarities are different. The inner diameter sizes of the first capillary probe and the second capillary probe can be the same or different. More preferably, in this embodiment, the capillary probe one and the capillary probe two apply direct current high voltages with different polarities, and the voltage value is 2.0-6.0 kV.
Referring to fig. 2 to 4, under the condition that the first capillary probe and the second capillary probe respectively apply dc high voltages with different polarities, the two capillary probes are respectively connected with the first syringe pump and the second syringe pump at a specific angle and a specific distance, a solution with a certain flow rate is delivered to the capillary probes by injection, a taylor cone tip based on the electrohydrodynamic principle is formed by means of the dc high voltages directly applied to the capillary probes, and an electrospray is formed in a patterned manner, and charged micro-droplet jet is issued under the spray, thereby forming a certain fusion area by means of the electric polarity.
Further, the direct-current high-voltage power supply switch II of the capillary probe II is placed in a closed state, and the tip of the capillary probe II forms spherical liquid drops due to no electrohydrodynamic action, while the tip of the capillary probe I forms Taylor cones and electrospray charged micro liquid drops still according to the electrohydrodynamic principle.
Further, a switch of a direct-current high-voltage power supply I of the capillary probe I is placed in a closed state, the inner diameter size of the capillary probe is increased, direct-current voltage applied to a capillary probe II is increased, a spherical liquid drop is formed at the tip of the capillary probe I, and under the dual conditions that the inner diameter of the capillary probe II is increased and the voltage is increased, a Taylor cone is formed at the tip and an electrospray charged micro liquid drop is formed by means of an electrohydrodynamic principle.
In one exemplary embodiment of the present disclosure, the capillary probe one and the capillary probe two are placed horizontally, and the spray probe tips are set at different reaction distances.
Further, the distance between the first capillary probe and the second capillary probe is 0-40 mm. More preferably, in this embodiment, the distance between the first capillary probe and the second capillary probe is 2-8 mm.
Further, the inner diameter dimension of the first capillary probe and the second capillary probe is 10-350 μm. The inner diameter sizes of the first capillary probe and the second capillary probe can be the same or different. More preferably, in this embodiment, the inner diameter dimension of the first and second capillary probes is 50-160 μm.
Further, the direct-current high voltage applied by the first capillary probe and the second capillary probe is 0.5-10 kV, and the polarities are different. The inner diameter sizes of the first capillary probe and the second capillary probe can be the same or different. More preferably, in this embodiment, the capillary probe one and the capillary probe two apply direct current high voltages with different polarities, and the voltage value is 2.0-6.0 kV.
Referring to fig. 5 to 7, under the condition that dc high voltages with different polarities are applied to the first capillary probe and the second capillary probe, the two capillary probes are respectively connected with the first syringe pump and the second syringe pump at a specific distance d 1, a solution with a certain flow rate is delivered to the capillary probes by injection, and under the condition that no dc high voltage is applied, non-charged droplets with different or same sizes are formed at the tips of the first capillary probe and the second capillary probe respectively depending on the flow rate and the inner diameter of the respective capillary probes.
Further, the direct-current high-voltage power supply switch of the capillary probe II is placed in an on state, the distance between the capillary probe I and the tip of the capillary probe II is set to be d 2 under the action of electrohydrodynamic action, and the capillary probe I and the tip of the capillary probe II respectively form Taylor cones according to electrohydrodynamic action.
Further, the distance between the first tip of the capillary probe and the second tip of the capillary probe is regulated to d3, the first tip of the capillary probe and the second tip of the capillary probe are respectively dependent on electrohydrodynamic, and dielectric property ultra-micro nano materials with specific concentration are added, so that a continuous meniscus bridge is formed between the Taylor cone at the first tip of the capillary probe and the Taylor cone at the second tip of the capillary probe.
In one exemplary embodiment of the present disclosure, the first and second capillary probes are placed at different angles, the spray probe tips are set at different reaction distances, and different concentrations and particle sizes of the dielectric property ultra-micro-nanomaterials are added to the system.
Referring to fig. 8 and 9, wide-angle and micro-angle transmission electron micrographs of the dielectric property nanometers as nano-supermicroelectrodes for forming meniscus bridges are shown. In the dielectric nano material solution with specific concentration, the particles are uniformly dispersed in a wide-angle transmission electron microscope image, the particle number is between 50 and 1000 in the range of 5 square micrometers (mum 2), and the particle diameter is about 20 to 80 nm in the range of 100 nm in the micro-angle electron microscope image.
Referring to fig. 10 to 13, the first liquid of the left capillary probe is an aqueous solution, a specific dielectric nanomaterial solution is added to the first liquid of the right capillary probe, and the second liquid of the right capillary probe is an aqueous solution. The voltages applied to the left side and the right side are set to be different in polarity, the voltage value is 2.0-6.0 kV, the flow rates of the capillary probe I and the capillary probe II are set to be 10-200 mu L/min respectively, the distance between the tip of the capillary probe I and the tip of the capillary probe II is 0-40 mm, and the included angle between the tip of the capillary probe I and the tip of the capillary probe II is 150 degrees.
Further, the tip of the capillary probe I forms a Taylor cone under the action of electrohydrodynamic action, the capillary probe II forms a Taylor cone under the action of electrohydrodynamic action and forms a drop-on landing phenomenon, the drop-on landing phenomenon gradually transits to a positive and negative adsorption process along with the change of the flow rate, a meniscus bridge is formed at the liquid junction, and finally, a stable meniscus bridge with a double spindle shape is formed, and the duration is 20-80 s.
Referring to fig. 14 to 17, the first liquid of the left capillary probe is an aqueous solution, and the second liquid of the right capillary probe is an aqueous solution, and dielectric nanomaterial solutions of different concentrations of specific materials are added. Along with the change of the concentration of the dielectric nano material, the liquid drop soft landing phenomenon formed by the capillary probe I and the capillary probe II is obviously reversed. As the concentration of the dielectric nanomaterial increases, the spindle structure tends to be more symmetrical with a duration of 40-150 s.
The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive conception of the present invention equally within the scope of the disclosure of the present invention, and all fall within the protection scope of the present invention.
Claims (10)
1. The charged droplet unfused regulation and control system based on the open environment is characterized by comprising a direct-current high-voltage source, an injection pump, a capillary probe and a dielectric property nanometer ultramicro electrode;
The direct-current high-voltage source is used for generating high voltage, generating electric field force on the liquid containing the dielectric nano ultramicro electrode, and enabling the electric field force and the fluid sheath stress to form a Taylor cone at the tip of the capillary probe when the electric field force and the fluid sheath stress reach an equilibrium state;
The injection pump is used for pumping the liquid containing the dielectric nano ultramicro electrode into the capillary probe according to a certain flow rate;
The tip of the capillary probe is provided with a micron-sized hole structure, so that the laminar flow of the fluid is converted into turbulent flow;
the dielectric nano ultramicroelectrode is used for forming a meniscus bridge by the Taylor cone under the action of different polarities at a specific distance;
The direct-current high-voltage source is divided into a direct-current high-voltage source I and a direct-current high-voltage source II, the capillary probe is divided into a capillary probe I and a capillary probe II, the direct-current high-voltage source I applies voltage to the capillary probe I, the direct-current high-voltage source II applies voltage to the capillary probe II, and a gap is reserved between the capillary probe I and the tip end of the capillary probe II.
2. The regulation and control system based on charged droplet unfused in open environment according to claim 1, wherein the tip distance of the capillary probe one and the capillary probe two is 15-70 μm, and the included angle between the two is 70-180 °.
3. The open environment based charged droplet unfused control system of claim 1, wherein said capillary probe has an inner diameter dimension of 100-350 μm.
4. The control method based on the charged droplet unfused regulation and control system under the open environment as claimed in claim 1, which is characterized by comprising the following steps:
S1, mixing water and a dielectric nano-microelectrode to obtain an aqueous solution containing the dielectric nano-microelectrode;
s2, the aqueous solution in the step S1 is input into a capillary probe through a delivery pump, and a direct-current high-voltage source is applied to the tip of the capillary probe;
S3, regulating the polarity and voltage value of a direct-current high-voltage source, setting the flow rate of a conveying pump, and regulating the tip distance and the tip included angle of a probe;
S4, enabling the aqueous solution containing the dielectric nano-ultramicroelectrode to form a Taylor cone at the tip of the capillary probe, and forming a meniscus bridge between two Taylor stacks, so that the meniscus bridge lasts for a period of time ranging from a few seconds to a few minutes.
5. The control method based on the charged droplet unfused regulation and control system under the open environment according to claim 4, wherein the voltage of the direct-current high-voltage source in the step S3 is 0.5-10 kV.
6. The control method based on the charged droplet unfused regulation and control system under the open environment of claim 4, wherein the inner diameter of the capillary probe in S3 is 100-350 μm, the tip distance of the capillary probe is 15-70 μm, and the included angle between the capillary probes is 70-180 degrees.
7. The control method based on the charged droplet unfused regulation and control system under the open environment according to claim 4, wherein the flow rate of the solution containing the dielectric nano-microelectrode in S3 is 10-200 mu L/min, the particle size of the material of the dielectric nano-microelectrode is 20-80 nm, and the average particle number distribution is 50-1000.
8. The control method based on the charged droplet unfused regulation and control system under the open environment according to claim 4, wherein the two capillary probes in S3 respectively apply direct current high voltages with different polarities, and the charged droplet is formed by means of the electrohydrodynamic principle.
9. The control method based on the charged droplet unfused regulation and control system under the open environment is characterized in that the difference value of direct current high voltages with different polarities applied by two capillary probes is 0.5-3.0kV, the formation of a meniscus bridge is in a critical state of forming charged droplets by stabilizing taylor cones and electrospraying, the taylor cones under positive and negative polarity conditions form attractive force under a specific control distance to form steady-state taylor cones, and the taylor cones with different polarities which are attracted to each other form fused meniscus bridges at the tip.
10. The control method based on the charged droplet unfused regulation and control system under the open environment according to claim 9, wherein the nano-microelectrode with the dielectric property in the meniscus bridge solution forms electrophoresis under the action of potential difference, and is arranged directionally to communicate with the meniscus bridge.
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