CN105058786B - Coaxial focusing electro stream printing method - Google Patents
Coaxial focusing electro stream printing method Download PDFInfo
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- CN105058786B CN105058786B CN201510412361.1A CN201510412361A CN105058786B CN 105058786 B CN105058786 B CN 105058786B CN 201510412361 A CN201510412361 A CN 201510412361A CN 105058786 B CN105058786 B CN 105058786B
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Abstract
The invention relates to a coaxial focusing electro stream printing method, belongs to the technical field of advanced manufacture and relates to a coaxial focusing electro stream printing method. According to the method, in the coaxial focusing electro stream printing process, two kinds of liquid are contained in a coaxial focusing electro stream printing nozzle, one kind of the liquid is a required forming material called inner function liquid, and the other kind of the liquid is an auxiliary material called outer liquid; the outer liquid and the inner function liquid are not dissolved mutually, and the viscosity of the outer liquid is larger than that of the inner function liquid. The coaxial focusing electro stream printing nozzle forms coaxial focusing jet flow with the two layers of liquid during printing and prints a bi-layer structure on a substrate; and finally, an outer printing material is removed to obtain an inner function structure. The method has the characteristics of being high in printing resolution, material adaptability and microenvironment disturbance resistance and is capable of achieving high-resolution patterned printing through a spray needle of micrometer scales at normal temperatures and pressures.
Description
Technical field
The invention belongs to advanced manufacturing technology field, it is related to a kind of coaxial focusing electricity jet Method of printing.
Background technology
Tradition is about nozzle needle based on the inkjet printing methods such as piezoelectricity, thermal, resolution ratio heavy dependence spray orifice size, resolution ratio
The twice of internal diameter, current nozzle needle internal diameter is 10~50 microns, and its printing feature size will be greater than 20 microns, micro- therefore, it is difficult to realize
The printing manufacture of the following resolution ratio of rice.In recent years, the electric jet printing technique based on electrical hydrodynamic effect turns into high-resolution
Print the focus of manufacture.The printing of electric jet be fluid under the comprehensive functions such as electric field force, mechanical force, surface tension of liquid, in spray
Pin exit forms the fine jet of stabilization much smaller than nozzle needle internal diameter, and high resolution printed manufacture is carried out using this jet.With biography
Ink jet printing process of the system based on piezoelectricity or hot bubble type principle is compared, electric jet printing have print resolution high, ink and
The advantages of substrate wide adaptability.
United States Patent (USP) I.A.Aksay et al., Electrohydrodynamic printing and
Manufacturing, 2009/0233057 A1, in US, using single spraying pin and single cone-jet model, print micrometer resolution
Figure.The article of University of Illinois of U.S. Urbana-champagne branch school Roger：J.A.Roger et al.,Nanoscale
Patterns of Oligonucleotides Formed by Electrohydrodynamic Jet Printing with
Applications in Biosensing and Nanomaterials Assembly,Nano Lett.,8(2008),
4210-4216, focussing force of the axial electric field power to jet is strengthened by reducing nozzle needle-substrate spacing, prints micron meter
The protein pattern of degree, pieck stage polyethylene drop, indium zinc oxide FET micro element, submicron order Block Copolymer Thin Film
Pattern and DNA dot pattern.South Korea follows the mandate of heaven university of township K.Choi et al., Fine resolution drop-on-demand
electrohydrodynamic patterning of conductive silver tracks on glass
Substrate, Appl.Phys.A-Mater.Sci.Process., 111 (2013), using metal Ag ink in 593-600. articles
Water, prints micron metal Ag conducting channels.But, above electricity jet printing is all based on single cone-jet model carries out printing system
Make.Under single cone-jet model, the electric field tangential force for putting on jet is limited, causes jet size-constrained, its printing resolution office
It is limited to micro-meter scale, print resolution is difficult to further raising.Additionally, existing pass through continuous based on single cone-jet printing technique
Reduce nozzle needle internal diameter to improve print resolution, this will cause to ink bad adaptability, such as ink of high viscosity, high concentration
Nozzle needle will be caused to block.And, printing in such a mode, jet is easily subject to the microenvironments such as environment temperature, humidity, vibration to do
Disturb, cause jet unstable, and then influence the precision and controlling of printing.
The content of the invention
The present invention has invented a kind of coaxial focusing electricity jet Method of printing to overcome above-mentioned the deficiencies in the prior art, utilizes
The printing of electric jet be fluid under the comprehensive functions such as electric field force, mechanical force, surface tension of liquid, form remote small at needle outlets
In the fine jet of the stabilization of nozzle needle internal diameter.Electric field force acts on coaxial ectonexine liquid simultaneously, and the deformation of outer layer liquid cone-jet is produced
Raw viscous force is superimposed with the electric field tangential force of internal layer liquid, and collective effect can improve internal layer liquid jet in internal layer liquid
The tangential force of deformation, reduces jet size, from the interference effect of outside microenvironment, and then improves print resolution and control
Property.
The technical solution adopted by the present invention is a kind of method of coaxial focusing electricity jet printing, it is characterized in that：The method exists
In coaxial focusing electricity jet print procedure, two kinds of liquid are housed in coaxial focusing electricity jet printing head 1, one kind is molded for needed for
Material is referred to as internal layer functional liquid 7, and another for auxiliary material is referred to as outer layer liquid 8, outer layer liquid is with internal layer functional liquid not
Mix；Also, the viscosity of outer layer liquid is more than the viscosity of internal layer functional liquid；Coaxial focusing electricity jet printing head 1 is in printing
The middle coaxial focusing jet for forming Double-layer liquid, prints double-decker on substrate, finally, removes outer layer printed material, obtains
Internal layer functional structure；Method is comprised the following steps that：
1) coaxial focusing electricity jet print system is installed
First, computer 16 is connected with microscope 17 and XY motion platforms substrate 12 respectively, XY motion platforms substrate 12
It is grounded by being grounded pole plate 19；First micro-injection pump 13 is connected to coaxial focusing electricity jet printing head by silicone rubber tube 18
1 upper end import, the second micro-injection pump 14 is entered by the left side that silicone rubber tube is connected to coaxial focusing electricity jet printing head 1
Mouthful, high voltage power supply 15 is connected with the lower-left end of coaxial focusing electricity jet printing head 1；
2) realization of coaxial focusing electricity jet
Before coaxial focusing electricity jet printing, internal layer functional liquid 7 and outer layer liquid 8 are selected first, after choosing, pass through
Be injected into for internal layer functional liquid 7 and outer layer liquid 8 respectively coaxial poly- by the first micro-injection pump 13 and the second micro-injection pump 14
In burnt electricity jet printing head 1；The internal layer function liquid high voltage electric field different with outer layer liquid applying, adjusts internal layer functional liquid
The flow of body and outer layer liquid, voltage；The spacing of substrate 11, regulation nozzle needle and substrate is placed on X-Y motion platform substrate 12,
That is working depth；
3) coaxial focusing electricity jet printing double-decker
After regulating flow, voltage and the working depth of internal layer functional liquid and outer layer liquid, start printing, by coaxially gathering
The burnt exit of electricity jet printing head 1 forms the coaxial jet 4 of stabilization, and coaxial jet 4 forms interior jet 5 by internal layer functional liquid
Outer jet 6 is formed with outer layer liquid to constitute；Stabilization coaxial jet is kept, according to print pattern, X-Y motion platform is controlled by computer
Movement locus, printed on the substrate 11, each print pattern unit be double-decker 9, endothecium structure is by interior layer function
Liquid is constituted, and outer layer covers structure is made up of outer layer liquid；
4) removal of outer layer printed material
After the completion of the printing of double-decker pattern, certain hour is shelved at room temperature, to obtain rock-steady structure；According to outer layer
The physical characteristic of liquid, outer layer covers printed material is removed using solvent dissolving method；After removal outer layer printed material, will obtain
The print pattern 10 that only inner layer material is constituted.
Remarkable result of the invention is printed using the method, with print resolution it is high, adaptability for materials is strong, anti-
The characteristics of microenvironment perturbed force is strong.It is double-deck first with coaxial focusing electricity jet printing using coaxial focusing electricity jet Method of printing
Structure, then outer layer covers material is removed, high-resolution pattern can be realized using the nozzle needle of micro-meter scale at normal temperatures and pressures
Change printing, the present invention realizes the further lifting of electric jet print resolution and controlling.
Brief description of the drawings
Fig. 1 is coaxial focusing electricity jet print system sketch, and Fig. 2 is coaxial focusing electricity jet printing sketch, wherein：1- is same
Axle focuses on electric jet printing head, nozzle needle in 2-, the outer nozzle needles of 3-, 4- coaxial jets, jet in 5-, the outer jets of 6-, 7- internal layer work(
Energy liquid, 8- outer layer liquids, 9- double-decker patterns, 10- endothecium structure patterns, 11- substrates, 12-XY motion platform substrates,
The micro-injection pumps of 13- first, the micro-injection pumps of 14-- second, 15- high voltage power supplies, 16- computers, 17- microscopes, 18- silicon rubbers
Sebific duct, 19- ground connection pole plates.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with technical scheme and accompanying drawing.Coaxial focusing electricity jet printing
It is that ectonexine liquid will during internal layer liquid and outer layer liquid each led into the inside and outside nozzle needle of coaxial focusing electricity jet printing head
It is immiscible, and, outer layer liquid viscosity is more than internal layer liquid, and the effect of outer layer liquid is to provide bigger to internal layer liquid jet
Shearing force simultaneously protects internal layer liquid.Apply certain voltage under appropriate flow, then in coaxial focusing electricity jet printing nozzle needle
Exit will form one coaxial focusing electricity jet.The tangential force of internal layer liquid jet deformation is improve, jet size is reduced, exempted from
By the interference effect of outside microenvironment, double-decker is first printed using this coaxial focusing electricity jet, then removes outer layer covers material,
The nozzle needle of micro-meter scale can be used to realize high-resolution patterning printing at normal temperatures and pressures.
The specific implementation step of embodiment is as follows：
1) coaxial focusing electricity jet print system is installed
Accompanying drawing 1 is coaxial focusing electricity jet print system sketch, wherein, computer 16 is moved with microscope 17 and XY respectively
Platform substrate 12 is connected, and XY motion platforms substrate 12 is grounded by being grounded pole plate 19.First micro-injection pump 13 passes through silicon rubber
Pipe 18 is connected to the upper end import of coaxial focusing electricity jet printing head 1, and the second micro-injection pump 14 is connected by silicone rubber tube
To the left side import of coaxial focusing electricity jet printing head 1, under high voltage power supply 15 and the left side of coaxial focusing electricity jet printing head 1
End is connected.
2) realization of coaxial focusing electricity jet
From SiO2Nano suspending liquid and silicone oil are respectively internal layer functional liquid 7 and outer layer liquid 8, SiO2The shaping for needed for
Material, silicone oil is outer layer covers material, SiO2It is immiscible with silicone oil, SiO2Viscosity is 71cSt, and silicon oil viscosity is 20000cSt.
As shown in figure 1, first passing through the first micro-injection pump 13 and the second micro-injection pump 14 by SiO2Nano suspending liquid and silicone oil are distinguished
In the interior nozzle needle 2 and outer nozzle needle 3 of injection coaxial focusing electricity jet printing head 1.Wherein, the internal diameter difference of interior nozzle needle and outer nozzle needle
It is 130 μm and 0.8mm.To SiO2Apply high voltage electric field with silicone oil, when field intensity reaches 5~8KV, beaten in coaxial focusing electricity jet
Coaxial focusing jet is formed at print needle outlets, internal layer jet 5 is SiO2Nano suspending liquid, outer layer jet 6 is silicone oil.
3) coaxial focusing electricity jet printing double-decker
Substrate 11 is placed on X-Y motion platform substrate 12, substrate 11 uses the spacing of silicon chip, regulation nozzle needle and substrate,
I.e. working depth is 2cm.The flow that internal layer liquid is set by the first micro-injection pump 13 is 0.001 μ l/min, by second
The flow that micro-injection pump 14 sets outer layer liquid is 10 μ l/min, and the voltage for adjusting high voltage power supply 14 is 6.0kv, adjusts out same
After axle focuses on electric jet, stabilization coaxial focusing electricity jet is kept；The movement velocity for setting X-Y motion platform is 40mm/s, is utilized
The control platform of computer 15 is moved, on the substrate 11 print pattern, as shown in Figure 2.Each print pattern unit is tied for double-deck
Structure 9, endothecium structure is by SiO2Composition, outer layer covers structure is made up of silicone oil, and printing double-decker characteristic size is 160 μm.
4) removal of outer layer printed material
According to the physical characteristic of silicone oil, present case removes outer layer printed material using the method for solvent dissolving.Double-decker
After the completion of printing, 5~10min is placed at room temperature, to obtain the double-deck print structure of stabilization；Appropriate isopropanol is taken, is contained into clean
In net glass culture dish；The silicon chip for printing double-decker is put into culture dish, it is ensured that print structure is totally immersed in isopropanol
In, substrate 11 is taken out after 10min and 1~2min is rinsed with isopropanol, obtain SiO2File printing structure 10, the SiO of formation2It is special
Size is levied for 80~300nm.
A kind of method of coaxial focusing electricity jet printing of the present invention, first with coaxial focusing electricity jet printing double-decker,
Cladding material is removed again, under conditions of micro-meter scale nozzle needle and normal temperature and pressure, high-resolution printing is realized, its printing is differentiated
Rate is sub-micron or nanoscale.Compared with single spraying pin electricity jet is printed, coaxial focusing electricity jet printing can significantly improve printing
Resolution ratio, it is possible to improve the adaptability to material, reduction and make required precision and the interference of reduction microenvironment to nozzle needle.
Claims (1)
1. the method for a kind of coaxial focusing electricity jet printing, it is characterized in that, the method in coaxial focusing electricity jet print procedure,
Two kinds of liquid are housed, a kind of moulding material for needed for is referred to as internal layer functional liquid in coaxial focusing electricity jet printing head (1)
(7), another for auxiliary material is referred to as outer layer liquid (8), outer layer liquid is immiscible with internal layer functional liquid, and outer layer liquid
Viscosity more than internal layer functional liquid viscosity；Coaxial focusing electricity jet printing head (1) forms Double-layer liquid in printing
Coaxial focusing jet, prints double-decker on substrate, finally, removes outer layer printed material, obtains internal layer functional structure；Method
Comprise the following steps that：
1) coaxial focusing electricity jet print system is installed
Coaxial focusing electricity jet print system is installed first, by computer (16) respectively with microscope (17) and XY motion platform bases
Plate (12) is connected, and XY motion platforms substrate (12) are grounded by being grounded pole plate (19)；First micro-injection pump (13) is by silicon rubber
Sebific duct (18) is connected to the upper end import of coaxial focusing electricity jet printing head (1), and the second micro-injection pump (14) is by silicon rubber
Sebific duct is connected to the left side import of coaxial focusing electricity jet printing head (1), and high voltage power supply (15) is beaten with coaxial focusing electricity jet
Print shower nozzle (1) lower-left end is connected；
2) realization of coaxial focusing electricity jet
Before coaxial focusing electricity jet printing, internal layer functional liquid (7) and outer layer liquid (8) are selected first, after choosing, pass through
First micro-injection pump (13) and the second micro-injection pump (14) respectively inject internal layer functional liquid (7) and outer layer liquid (8)
To in coaxial focusing electricity jet printing head (1)；The internal layer function liquid high voltage electric field different with outer layer liquid applying, regulation
The flow of internal layer functional liquid and outer layer liquid, voltage；Substrate (11), regulation spray are placed on X-Y motion platform substrate (12)
The spacing of pin and substrate, i.e. working depth；
3) coaxial focusing electricity jet printing double-decker
After regulating flow, voltage, the working depth of internal layer functional liquid and outer layer liquid, start printing, by coaxial focusing electricity
Jet printing head (1) exit forms the coaxial jet (4) of stabilization, and coaxial jet (4) forms interior penetrating by internal layer functional liquid
Stream (5) and outer layer liquid form outer jet (6) composition；Stabilization coaxial jet is kept, according to print pattern, X-Y is controlled by computer
The movement locus of motion platform, is printed on substrate (11), and each print pattern unit is double-decker (9), internal layer knot
Structure is made up of internal layer functional liquid, and outer layer covers structure is made up of outer layer liquid；
4) removal of outer layer printed material
After the completion of the printing of double-decker pattern, certain hour is shelved at room temperature, to obtain rock-steady structure；According to outer layer liquid
Physical characteristic, using solvent dissolving method remove outer layer covers printed material；After removal outer layer printed material, will obtain only
The print pattern (10) of inner layer material composition.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11198293B2 (en) * | 2016-03-30 | 2021-12-14 | Iamfluidics Holding B.V. | Process and device for in-air production of single droplets, compound droplets, and shape-controlled (compound) particles or fibers |
| CN106142843B (en) * | 2016-07-06 | 2017-08-22 | 大连理工大学 | A kind of coaxial electrical fluid dynamic printing head device |
| CN107053653B (en) * | 2017-03-30 | 2019-04-09 | 大连理工大学 | Based on the compound electrojet 3D printing device and method of electric field-thermal field |
| CN107234804B (en) * | 2017-06-23 | 2019-04-09 | 大连理工大学 | The electric jet stream Method of printing that a kind of nanometer of point infiltration focuses |
| CN107601425B (en) * | 2017-08-10 | 2020-06-16 | 大连理工大学 | Printing manufacturing method of nano beam structure |
| CN107756791A (en) * | 2017-09-30 | 2018-03-06 | 北京科田高新技术有限公司 | A kind of nozzle system and Method of printing of 3D printing micro-nano compound structure |
| CN107805808B (en) * | 2017-11-20 | 2019-07-05 | 山东大学 | A kind of electricity jet stream deposition-micro- texture cutter preparation method of laser melting coating |
| CN108466486B (en) * | 2018-03-22 | 2019-08-09 | 吉林大学 | A method of preparing electric jet stream nanometer nozzle needle |
| CN108608555B (en) * | 2018-05-10 | 2019-10-01 | 山东大学 | A method of layered composite ceramic cutter material biscuit is prepared using electric jet stream deposition technique |
| CN109094199B (en) * | 2018-09-28 | 2020-01-17 | 大连理工大学 | Liquid electrode device for coaxial electrospray printing |
| CN109159422B (en) * | 2018-10-10 | 2020-09-11 | 大连理工大学 | Laser-assisted electrospray in-situ printing device |
| CN109366980B (en) * | 2018-10-10 | 2020-04-28 | 大连理工大学 | Laser-assisted electrospray in-situ printing manufacturing method |
| CN110394985B (en) * | 2019-06-21 | 2021-08-20 | 南京大学 | Device and method for constructing double-layer liquid cone to perform three-dimensional continuous molecular self-assembly by utilizing Taylor jet effect |
| CN113650422B (en) * | 2021-08-02 | 2022-05-10 | 嘉兴学院 | Control method and device for electrohydrodynamic jet printing of wrapped microstructure |
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| WO2007053621A1 (en) * | 2005-10-31 | 2007-05-10 | The Trustees Of Princeton University | Electrohydrodynamic printing and manufacturing |
| DE102007040762A1 (en) * | 2007-08-29 | 2009-03-05 | Bayer Materialscience Ag | Device and method for producing electrically conductive nanostructures by means of electrospinning |
| PL2384375T3 (en) * | 2009-01-16 | 2017-12-29 | Zeus Industrial Products, Inc. | Electrospinning of ptfe with high viscosity materials |
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