Aerosol ink-jet printing device and deposition efficiency regulation and control method thereof

Abstract

According to the aerosol ink-jet printing device and the deposition efficiency regulation and control method thereof, the mode that an annular thermal field is additionally arranged on an aerosol ink flow jetting channel is adopted, the density of a gas-liquid phase flow field of an aerosol ink jet printing system is changed, feature distribution of a high Reynolds number flow field is adjusted, and then aerosol ink particles are subjected to axial-radial focusing. Based on heat transfer / distribution, computational fluid mechanics and particle dynamics, respectively establishing a temperature field feature distribution model and an aerosol nano ink particle focusing motion model of the aerosol jet printing system; thermal field distribution characteristics of specific printing ink under specific deposition characteristic requirements are calculated through numerical simulation, and then inline online thermal field input parameters (temperature values and thermal cycle rates) are determined; the inline online thermal field obtained through calculation and analysis is constructed for the aerosol ink flow jetting environment, the longitudinal distribution density of aerosol ink deposition is improved, and finally reliable optimization regulation and control of the deposition efficiency (deposition distribution aspect ratio) of aerosol ink-jet printing are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol inkjet printing, and in particular to an aerosol inkjet printing device and a method for regulating and controlling the deposition efficiency thereof. Background Art

[0002] With the rapid development of aerospace technology, the cross-generational development characteristics of its electronic systems, such as conformality, intelligence, and high integration, have become key technical goals for advanced equipment. Conformal printing, as an innovative solution that can achieve high-performance electronic functions on complex surfaces, has become an important direction for the development of advanced aerospace equipment. In recent years, it has made significant progress in major military projects in various countries. Aerosol inkjet printing technology, as a new type of conformal electronic printing technology, has non-contact, high-precision printing characteristics, and can achieve conformal printing manufacturing of active and passive electronic components and sensors. At present, the optimization research of this technology has become a research hotspot in recent years.

[0003] Aerosol inkjet printing technology can adapt to variable spacing of 1-5mm and perform non-contact printing, so as to better adapt to the deposited objects with complex geometric features such as hyperbolic and variable curvature; in addition, it also has a high printing resolution of 5μm and a wide range of printable inks (particle size <50nm, viscosity 1-1000cP), and has become the most reliable method for conformal manufacturing of complex curved surface structure substrates. Its core working principle is to atomize the functional conductive / dielectric ink into aerosol through pneumatic / ultrasonic oscillation, and then use inert carrier gas (nitrogen) to transport the aerosol ink to the print nozzle, and then use inert sheath gas flow to focus the aerosol ink flow and spray it to the target substrate at a speed of 10-100m / s to form non-solid phase deposition, and finally obtain the final conformal functional structure through high temperature sintering / photocuring. At present, the process optimization of aerosol inkjet printing technology and the research on conformal electronic applications based on this technology are developing rapidly, and capacitors, inductors and sensors with performance comparable to or even better than commercial ones have been achieved.

[0004] However, the aspect ratio of the three-dimensional morphology of aerosol inkjet deposition tends to a relatively low constant value. The vertical height of the deposition directly determines the deposition efficiency, that is, the deposition amount per unit printing time or unit printing length; the lateral width of the deposition determines the printing accuracy. This makes aerosol inkjet printing, especially in terms of deposition efficiency, face the following problems: (1) In the process of aerosol inkjet printing for high-precision printing, a lower ink flow deposition rate is required, which makes the printing efficiency too low. Especially for high-precision large-scale aerosol inkjet printing, the process time can be several times higher than that of low-precision. (2) The lower deposition rate corresponds to a lower deposition amount, and the overspray itself will increase significantly, resulting in significant defects in aerosol inkjet printing; (3) If a high deposition distribution aspect ratio is achieved through multi-layer printing, the multi-layer printing error superposition will reduce the forming quality; (4) If the deposition rate is increased, although the unit deposition amount / deposition height is improved, the deposition line width increases due to the low deposition aspect ratio, and the printing resolution is insufficient; (5) In addition, in order to avoid mutual interference between ink flows, the line width spacing needs to be increased when planning the printing path, which limits the design freedom and integration of functional conformal circuits and even affects the functional characteristics of electronic circuits.

[0005] Aerosol inkjet printing is facing the engineering contradiction of "improved printing accuracy, insufficient deposition efficiency; increased deposition rate, increased printing line width", which seriously affects the expected comprehensive performance of conformal electronics. Therefore, if the deposition efficiency / aspect ratio cannot be reliably regulated during the ink deposition process, aerosol inkjet printing technology will be difficult to apply to high-quality, high-precision, and high-efficiency conformal electronics manufacturing. Summary of the invention

[0006] In view of the problem of low deposition efficiency (aspect ratio of deposition distribution) in the existing aerosol inkjet printing technology, the deposition efficiency of aerosol inkjet printing is significantly improved by adding an inline online heating mechanism in the aerosol inkjet printing process, considering that the thermal field has significant physical field interference effect and high stability, and is one of the effective means for microfluidic and particle manipulation.

[0007] Specifically, the first aspect of the present invention provides an aerosol inkjet printing device comprising: an aerosol printing nozzle and a hot water circulation system, wherein the aerosol printing nozzle is composed of an upper oil-gas mixing portion and a lower nozzle, and a transition pipe communicating with the oil-gas mixing portion is provided at the upper end of the nozzle; Aerosol ink, carrier gas and sheath gas are input from the oil-gas channel of the oil-gas mixing part and merged into the injection channel at the center of the transition pipe above the nozzle, and then ejected from the lower end of the nozzle to realize aerosol inkjet printing; A spiral circulating water bath flow channel is arranged inside the side wall of the transition pipe, and the hot water circulation system can introduce circulating hot water into the spiral circulating water bath flow channel, so that the central injection channel of the transition pipe is in a stable annular thermal field.

[0008] As a further explanation of the present invention, the hot water circulation system includes a water bath heater and a water bath circulation microfluidic pump, the water inlet pipe and the water outlet pipe of the water bath heater are respectively connected to the water inlet and outlet of the water bath circulation microfluidic pump and the spiral circulating water bath flow channel in sequence, wherein the water bath heater has heating and heat preservation functions, and can control the temperature of the circulating water bath to a specific value, and the water bath circulation microfluidic pump can set a specific circulation flow rate, and can ensure that the injection channel is in a stable annular thermal field by adjusting the circulation flow rate.

[0009] As a further explanation of the present invention, the oil-gas channel includes an aerosol ink & carrier gas channel located at the center of the oil-gas mixing section and a circle of sheath gas channels distributed in an inverted cone shape along the inner circumference of the side wall of the oil-gas mixing section. The bottom of the aerosol ink & carrier gas channel and the sheath gas channel merge and are connected to the upper end of the injection channel.

[0010] A second aspect of the present invention provides a method for controlling deposition efficiency of aerosol inkjet printing, comprising the following steps: Step 1: according to the deposition requirements of aerosol printing, the corresponding single-layer deposition height is obtained, and the deposition distribution aspect ratio is determined by the single-layer deposition height and the deposition line width; Step 2: Based on the material properties of the aerosol nano-ink, the characteristic distribution law of the gas / liquid flow field under the temperature field constraint and the force-motion of the aerosol nano-ink particles during the spraying / deposition process are analyzed to construct a spraying / deposition motion model of the aerosol nano-ink particles under the temperature field constraint; Step 3: Based on the injection / deposition motion model obtained in step 2 and the deposition distribution aspect ratio obtained in step 1, the thermal field temperature value of online heating is solved; Step 4, based on the structural form of the aerosol inkjet printing device and the thermal conductivity of its materials, and taking into account the heat circulation flow rate, a heat transfer mechanism for inline heating is constructed; Step 5: Based on the heat transfer mechanism and the thermal field temperature value obtained in step 3, the heating temperature and the thermal cycle flow rate of the water bath heating end are determined; Step 6: According to the heating temperature and heat circulation flow rate of the water bath heating end obtained in step 5, the output temperature of the heating end and the circulation pump flow rate are adjusted in real time to realize online heating-assisted aerosol inkjet printing, and finally realize the regulation of aerosol printing deposition efficiency.

[0011] As a further illustration of the present invention, the deposition requirements specifically include printing accuracy, deposition spacing, deposition line layout, and number of interconnection layers.

[0012] As a further illustration of the present invention, the material properties include ink particle size, particle / solvent density, and solvent viscosity.

[0013] As a further illustration of the present invention, in step 2, in the process of analyzing the force-motion condition of the aerosol nano-ink particles during the injection / deposition process, the force includes the fluid drag of the solvent and the sheath gas, and the motion includes the velocity of the ink particles in the axial direction of the channel.

[0014] As a further explanation of the present invention, the temperature field constraint is specifically: by setting an online heating auxiliary system on the periphery of the jet channel of the aerosol inkjet printing device, the movement process of the aerosol nano ink is constrained by external heating conditions.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: (1) The input temperature of the circulating heating water bath in this method can be calculated based on the deposition efficiency requirements of the printing, combined with the aerosol ink material properties and the printing environment, through the simulation calculation of the focusing of the aerosol ink particles by the external heating field, and accurately output by adjusting the temperature parameters of the water bath heating end to achieve quantitative focusing of the aerosol printing ink particles; (2) The thermal response of the water bath heating end is controllable online. The temperature parameters of the water bath heating end can be adjusted in real time according to the printing requirements and changes in the printing materials, thereby achieving online regulation of the focusing effect of aerosol printing ink particles. (3) This method has no restrictions on the physical and chemical properties of aerosol printing ink materials and is widely applicable to ink materials within the range of aerosol printing methods; (4) This method has no interference with the aerosol printing system and no destructive effect on the ink materials used in aerosol printing, including physical and chemical effects.

[0016] Other features and advantages of the technical solution will be described in the subsequent description, and partly become apparent from the description, or understood by implementing the technical solution. The purpose and other advantages of the technical solution can be achieved and obtained through the structures specifically pointed out in the written description and the drawings.

[0017] The technical solution of the present technical solution is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the technical solution and constitute a part of the specification. Together with the embodiments of the technical solution, they are used to explain the technical solution and do not constitute a limitation of the technical solution. In the accompanying drawings: Figure 1 This is an overall structural diagram of the aerosol inkjet printing device provided by the present invention.

[0019] Figure 2 A schematic diagram of the internal structure of the nozzle portion of the aerosol inkjet printing device provided by the present invention.

[0020] Figure 3 Schematic diagram of the axial movement of aerosol ink particle flow assisted by inline heating in the present invention.

[0021] Figure 4 Schematic diagram of radial movement of aerosol ink particle flow assisted by inline heating in the present invention.

[0022] Description of reference numerals: Aerosol printing nozzle 1, nozzle 2, transition pipe 21, injection channel 22, hot water circulation system 3, spiral circulating water bath flow channel 4, oil-gas mixing part 5, sheath gas channel 51, aerosol ink & carrier gas channel 52. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present technical solution are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present technical solution, and are not used to limit the present technical solution.

[0024] like Figure 1-2 As shown, the aerosol inkjet printing device provided by the present invention includes: an aerosol printing nozzle 1 and a hot water circulation system 3, the aerosol printing nozzle 1 consists of an upper oil-gas mixing part 5 and a lower nozzle 2, and the upper end of the nozzle 2 is provided with a transition pipe 21 connected to the oil-gas mixing part 5; aerosol ink, carrier gas and sheath gas are input from the oil-gas channel of the oil-gas mixing part 5 and merged into the injection channel 22 at the center of the transition pipe 21 above the nozzle 2, and then ejected from the lower end of the nozzle 2 to realize aerosol inkjet printing; a spiral circulating water bath flow channel 4 is provided inside the side wall of the transition pipe 21, and the hot water circulation system 3 can pass circulating hot water into the spiral circulating water bath flow channel 4, so that the central injection channel 22 of the transition pipe 21 is in a stable annular thermal field.

[0025] Specifically, the hot water circulation system 3 includes a water bath heater and a water bath circulation microfluidic pump. The water inlet pipe and the water outlet pipe of the water bath heater are respectively connected to the water inlet and outlet of the water bath circulation microfluidic pump and the spiral circulation water bath flow channel 4 in sequence, wherein the water bath heater has heating and heat preservation functions, and can control the temperature of the circulating water bath to a specific value. The water bath circulation microfluidic pump can set a specific circulation flow rate, and can ensure that the injection channel 22 is in a stable annular thermal field by adjusting the circulation flow rate. The above-mentioned water bath heater has heating and heat preservation functions, and can control the temperature of the circulating water bath to a specific constant value. The water bath circulation microfluidic pump can set a specific circulation flow rate, and by adjusting the circulation flow rate, the thermal stability of the internalized online thermal field is ensured while considering the heat transfer (dissipation) of the thermal field where the aerosol ink flow is located.

[0026] Specifically, the oil-gas channel includes an aerosol ink & carrier gas channel 52 located at the center of the oil-gas mixing section 5 and a circle of sheath gas channels 51 distributed in an inverted cone shape along the inner circumference of the side wall of the oil-gas mixing section 5. The aerosol ink & carrier gas channel 52 and the sheath gas channel 51 are connected to the upper end of the injection channel 22 after merging at the bottom.

[0027] The aerosol inkjet printing device provided by the present invention firstly considers the regional range of thermal focusing compensation required for the aerosol ink flow, that is, determines the layout range of the tubular thermal field; secondly, based on the thermophysical properties of the circulating water bath, nozzle material, pneumatic flow field, and ink solvent, it is able to construct a heat transfer mechanism of the external heating field and determine the layout form of the spiral flow channel of the circulating hot water bath, mainly including the flow channel aperture, flow channel spacing, the number of flow channels, etc.

[0028] The specific structural form of the aerosol printing nozzle 1 provided by the present invention can be manufactured by a photocuring 3D printing molding method and integrated and assembled on a commercial aerosol inkjet printing platform to form an aerosol inkjet printing device with an inline online heating auxiliary device, thereby being able to carry out inline online heating-assisted aerosol inkjet printing work.

[0029] Based on the structural form of the above aerosol inkjet printing device, the present invention also provides an aerosol inkjet printing deposition efficiency control method, comprising the following steps: Step 1: According to the deposition requirements of aerosol printing, the corresponding single-layer deposition height is obtained, and the deposition distribution aspect ratio is determined by the single-layer deposition height and the deposition line width.

[0030] Among them, the deposition requirements specifically include printing accuracy, deposition spacing, deposition line layout, and number of interconnection layers.

[0031] It should be noted that the deposition distribution aspect ratio is the ratio of the single-layer deposition height to the deposition line width, and the deposition efficiency is directly related to the deposition distribution aspect ratio. Therefore, by adjusting the deposition distribution aspect ratio, the deposition efficiency can be optimized.

[0032] Step 2: Based on the material properties of aerosol nano-ink, analyze the characteristic distribution law of the gas / liquid flow field under the constraint of temperature field and the force-motion of aerosol nano-ink particles during the injection / deposition process, and construct the injection / deposition motion model of aerosol nano-ink particles under the constraint of temperature field.

[0033] Among them, material properties include ink particle size, particle / solvent density, solvent viscosity, etc.

[0034] Specifically, in step 2, in the process of analyzing the force-motion of the aerosol nano-ink particles during the injection / deposition process, the force includes the fluid drag of the solvent and the sheath gas, and the motion includes the velocity of the ink particles in the axial direction of the channel.

[0035] It should be noted that the temperature field constraint is specifically: by setting an online heating auxiliary system at the periphery of the jet channel of the aerosol inkjet printing device, the movement process of the aerosol nano ink is constrained by external heating conditions.

[0036] Specifically, the characteristic distribution law of the gas / liquid flow field under the constraint of the temperature field is analyzed, that is, the control equations of the laminar compressible flow are solved simultaneously by a density-based solver to describe the process of the flow field characteristic distribution, so as to more accurately represent the fluid behavior under different conditions. For Newtonian isotropic fluids, these control equations are expressed in a general form, including the continuity equation, momentum equation, energy equation and state equation, as shown in formulas (1)-(4), respectively.

[0037] (1) (2) (3) , (4) in is the density of the fluid, is the velocity of the liquid, is the pressure of the liquid, is the viscosity of the liquid, is the momentum source term, is the internal specific energy, is the thermal conductivity of the liquid, is the temperature of the liquid, is the dissipation function, is the energy source term, is the universal gas constant, is the heat capacity of the liquid at constant volume.

[0038] Regulating the balance between fluid temperature and density in aerosol inkjet printing, Equation (4) is the main constraint for the nozzle in-line heating method. Specifically, the temperature-induced fluid density change affects the flow field distribution characteristics, which helps to control the motion trajectory of AIP (aerosol ink particle) controlled by the flow field. After analyzing the flow field evolution mechanism in aerosol inkjet printing, simulations were performed to calculate its characteristic distribution. Subsequently, the motion of AIP within the established flow field model was simulated. The trajectory of AIP was predicted by integrating the force balance acting on AIP in the shear flow. The motion of the spherical AIP through the continuous phase was determined by applying the force balance based on Newton's second law of motion, as shown in Equation (5).

[0039] (5) in , i.e., drag, is a form of fluid resistance acting on the AIP, opposing the relative motion between the gas phase and the ink phase, as shown in Equation (6). , i.e., the Saffman lift, is the lift force acting on the AIP passing through the shear flow. It is proportional to the shear rate and the relative velocity between the gas phases, as shown in Equation (7). is the gravity acting on the AIP, as shown in formula (8).

[0040] (6) (7) (8) in , , and They are the mass, radius, density and speed of the AIP. is the kinematic viscosity, is the velocity gradient, is the gravitational acceleration vector.

[0041] Step 3: Based on the injection / deposition motion model obtained in step 2 and the deposition distribution aspect ratio obtained in step 1, the thermal field temperature value of online heating is solved.

[0042] According to the injection / deposition motion model obtained in step 2 above, we can know that the change of thermal field temperature value T will cause the change of fluid density, which will further affect the flow field distribution characteristics, and finally affect the AIP (aerosol ink particle) motion trajectory controlled by the flow field. Therefore, according to the control requirements of the AIP motion trajectory (the motion trajectory is the single-layer deposition height and deposition line width, that is, the deposition distribution aspect ratio), the thermal field temperature value of online heating can be obtained by reverse solution.

[0043] Step 4: Based on the structural form of the aerosol inkjet printing device and the thermal conductivity of its materials, and taking into account the heat circulation flow rate, a heat transfer mechanism for inline heating is constructed.

[0044] Step 5: Based on the heat transfer mechanism and the thermal field temperature value obtained in step 3, determine the heating temperature and thermal circulation flow rate of the water bath heating end.

[0045] Since the heating temperature of the water bath heating end is not equivalent to the actual heating temperature (thermal field temperature value) of the aerosol nano-ink particles, the conversion process between the two will be affected by two factors: the thermal circulation flow rate and the thermal conductivity of the nozzle itself. The thermal conductivity of the nozzle itself is an inherent parameter of the material. Therefore, by constructing the relationship between the heating temperature of the water bath heating end and the thermal circulation flow rate, the thermal conductivity of the material and the thermal field temperature value obtained in step 2, that is, constructing a heat transfer mechanism for inline online heating, the heating temperature and thermal circulation flow rate of the water bath heating end can be obtained according to the thermal field temperature value.

[0046] Step 6: According to the heating temperature and heat circulation flow rate of the water bath heating end obtained in step 5, the output temperature of the heating end and the circulation pump flow rate are adjusted in real time to realize online heating-assisted aerosol inkjet printing, and the aerosol inkjet printing ink flow is focused in the axial-radial direction by heat-assisted focusing, such as Figure 3 and Figure 4 As shown, the aerosol printing deposition efficiency is finally regulated.

[0047] The present invention adopts the method of adding an annular thermal field to the aerosol ink jetting channel to change the density of the gas-liquid phase flow field of the aerosol printing system, adjust the characteristic distribution of the high Reynolds number flow field, and then perform axial-radial focusing on the aerosol ink particles. Based on heat transfer / distribution, computational fluid dynamics, and particle dynamics, the temperature field characteristic distribution model of the aerosol printing system and the aerosol nano-ink particle focusing motion model are established respectively; the thermal field distribution characteristics of a specific ink under specific deposition characteristic requirements are calculated by numerical simulation, and then the inline online thermal field input parameters (temperature value and thermal cycle rate) are determined; the inline online thermal field obtained by the above calculation and analysis is constructed for the aerosol ink jetting environment, the longitudinal distribution density of the aerosol ink deposition is improved, and finally the reliable optimization and regulation of the aerosol inkjet printing deposition efficiency (deposition distribution aspect ratio) is realized.

[0048] The present invention realizes radial quantitative focusing with full coverage of the horizontal layer of aerosol ink particles through the method of thermal particle manipulation, improves the longitudinal distribution density and deposition aspect ratio of aerosol ink deposition, and realizes reliable and effective optimization and regulation of aerosol inkjet printing deposition efficiency.

[0049] Obviously, those skilled in the art can make various changes and modifications to the technical solution without departing from the spirit and scope of the technical solution. Thus, if these modifications and variations of the technical solution fall within the scope of the claims of the technical solution and their equivalents, the technical solution is also intended to include these modifications and variations.

Claims

1. An aerosol inkjet printing device, characterized in that: include: An aerosol printing nozzle (1) and a hot water circulation system (3), wherein the aerosol printing nozzle (1) is composed of two parts, an upper oil-gas mixing part (5) and a lower nozzle (2), and a transition pipe (21) communicating with the oil-gas mixing part (5) is provided at the upper end of the nozzle (2); Aerosol ink, carrier gas and sheath gas are input from the oil-gas channel of the oil-gas mixing section (5) and merged into the injection channel (22) at the center of the transition pipe (21) above the nozzle (2), and then ejected from the lower end of the nozzle (2), thereby realizing aerosol inkjet printing; A spiral circulating water bath flow channel (4) is provided inside the side wall of the transition pipe (21), and the hot water circulation system (3) is capable of passing circulating hot water into the spiral circulating water bath flow channel (4), so that the central injection channel (22) of the transition pipe (21) is in a stable annular thermal field.

2. The aerosol inkjet printing device according to claim 1, characterized in that: The hot water circulation system (3) comprises a water bath heater and a water bath circulation micro-fluidic pump, wherein the water inlet pipe and the water outlet pipe of the water bath heater are respectively connected in sequence to the water inlet and outlet of the water bath circulation micro-fluidic pump and the spiral circulation water bath flow channel (4), wherein the water bath heater has heating and heat preservation functions and can control the temperature of the circulating water bath to a specific value, and the water bath circulation micro-fluidic pump can set a specific circulation flow rate and can ensure that the injection channel (22) is in a stable annular thermal field by adjusting the circulation flow rate.

3. The aerosol inkjet printing device and the deposition efficiency control method thereof according to claim 2, characterized in that: The oil-gas channel comprises an aerosol ink & carrier gas channel (52) located at the center of the oil-gas mixing section (5) and a circle of sheath gas channels (51) distributed in an inverted cone shape along the inner circumference of the side wall of the oil-gas mixing section (5); the aerosol ink & carrier gas channel (52) and the sheath gas channel (51) are connected to the upper end of the injection channel (22) after merging at the bottom.

4. A method for controlling deposition efficiency of aerosol inkjet printing, characterized in that: The steps include: Step 1: according to the deposition requirements of aerosol printing, the corresponding single-layer deposition height is obtained, and the deposition distribution aspect ratio is determined by the single-layer deposition height and the deposition line width; Step 2: Based on the material properties of the aerosol nano-ink, the characteristic distribution law of the gas / liquid flow field under the temperature field constraint and the force-motion of the aerosol nano-ink particles during the spraying / deposition process are analyzed to construct a spraying / deposition motion model of the aerosol nano-ink particles under the temperature field constraint; Step 3: Based on the injection / deposition motion model obtained in step 2 and the deposition distribution aspect ratio obtained in step 1, the thermal field temperature value of online heating is solved; Step 4, based on the structural form of the aerosol inkjet printing device described in any one of claims 1 to 3 and the thermal conductivity of its material, and taking into account the thermal cycle flow rate, construct a heat transfer mechanism for inline online heating; Step 5: Based on the heat transfer mechanism and the thermal field temperature value obtained in step 3, the heating temperature and the thermal cycle flow rate of the water bath heating end are determined; Step 6: According to the heating temperature and heat circulation flow rate of the water bath heating end obtained in step 5, the output temperature of the heating end and the circulation pump flow rate are adjusted in real time to realize online heating-assisted aerosol inkjet printing, and finally realize the regulation of aerosol printing deposition efficiency.

5. The method for controlling deposition efficiency of aerosol inkjet printing according to claim 4, characterized in that: The deposition requirements specifically include printing accuracy, deposition spacing, deposition line layout, and number of interconnection layers.

6. The method for controlling deposition efficiency of aerosol inkjet printing according to claim 4, characterized in that: The material properties include ink particle size, particle / solvent density, and solvent viscosity.

7. The method for controlling deposition efficiency of aerosol inkjet printing according to claim 4, characterized in that: In step 2, during the process of analyzing the force-motion of the aerosol nano-ink particles during the spraying / deposition process, the force includes the fluid drag of the solvent and the sheath gas, and the motion includes the velocity of the ink particles in the axial direction of the channel.

8. The method for controlling deposition efficiency of aerosol inkjet printing according to claim 4, characterized in that: The temperature field constraint is specifically: by setting an online heating auxiliary system on the periphery of the jet channel of the aerosol inkjet printing device, the movement process of the aerosol nano ink is constrained by external heating conditions.

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