CN114523780B - Nanoparticle self-assembly deposition method based on magnetic field regulation and control - Google Patents

Nanoparticle self-assembly deposition method based on magnetic field regulation and control Download PDF

Info

Publication number
CN114523780B
CN114523780B CN202210256641.8A CN202210256641A CN114523780B CN 114523780 B CN114523780 B CN 114523780B CN 202210256641 A CN202210256641 A CN 202210256641A CN 114523780 B CN114523780 B CN 114523780B
Authority
CN
China
Prior art keywords
ink
magnetic field
magnetic
printing
microstructure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210256641.8A
Other languages
Chinese (zh)
Other versions
CN114523780A (en
Inventor
邱璐
赵志恒
朱剑琴
陶智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beihang University
Original Assignee
Beihang University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beihang University filed Critical Beihang University
Priority to CN202210256641.8A priority Critical patent/CN114523780B/en
Publication of CN114523780A publication Critical patent/CN114523780A/en
Application granted granted Critical
Publication of CN114523780B publication Critical patent/CN114523780B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
    • H05K3/1241—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing
    • H05K3/125—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing by ink-jet printing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ink Jet (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The invention provides a nanoparticle self-assembly deposition method based on magnetic field regulation and control, and belongs to the technical field of nanoparticle self-assembly. The method comprises the following steps: step one: setting up an inkjet printing and depositing device based on magnetic field regulation; step two: placing ink in an ink-jet printing device, wherein the ink is magnetic fluid ink or magnetic nanoparticle ink; step three: designing a printing circuit for printing or coating a dot matrix and a circuit by using a liquid transfer device, starting a Helmholtz coil to electrify and apply a magnetic field, placing a printing substrate on a constant temperature heating base, and depositing a single-layer microstructure flux linkage pattern on the substrate by ink jet printing; step four: and fusing and superposing the microstructure flux linkage by changing the direction of the magnetic field to form a multilayer microstructure pattern. According to the method, a horizontal magnetic field is applied through the Helmholtz coil, the constant-temperature heating base is used for controlling the evaporation speed of liquid drops, and the uniform deposition pattern and the preparation of the dense parallel chain-shaped microstructure deposition pattern can be realized.

Description

Nanoparticle self-assembly deposition method based on magnetic field regulation and control
Technical Field
The invention belongs to the technical field of nanoparticle self-assembly, and particularly relates to a nanoparticle self-assembly deposition method based on magnetic field regulation.
Background
The evaporation deposition of liquid drops on the surface of a substrate is a research field widely applied, and the regulation and control of the liquid drop deposition are key research directions, so that the method has wide application in the fields of ink-jet printing, biomedical detection and the like. In many cases (e.g. inkjet printing for the preparation of printed electronics, components) it is desirable to obtain a uniform or near uniform deposition pattern, however, the internal flow (e.g. capillary flow, marangoni flow) transport during evaporation of the droplets can create a coffee ring effect, severely affecting the droplet deposition quality. Therefore, various regulatory technological means have been developed for human intervention in evaporation of droplets and transport of nanoparticles, thus obtaining high quality deposition patterns. For magnetic fluid or ink containing magnetic nano particles, the magnetic field active regulation technology is an effective regulation means, and the self-assembly effect of the magnetic nano particles under the horizontal magnetic field provides the possibility of preparing microstructure deposition patterns on the basis of uniform deposition.
Internal flow (such as capillary flow and marangoni flow) transportation in the droplet evaporation process can cause uneven deposition of particles, seriously affect the droplet deposition quality, and therefore, a regulation and control means needs to be introduced to intervene in the droplet evaporation deposition. For magnetic fluid or ink containing magnetic nano particles, the magnetic field active regulation technology is an effective regulation means. Under the horizontal magnetic field, the magnetic nano particles are combined into dense long chains along the magnetic induction lines (namely self-assembly effect), the structure can be kept to be completely deposited by setting evaporation parameters, and under the combination of multilayer printing, the technology can realize the approximately uniform deposition and the manufacturing of complex microstructure deposition patterns.
Disclosure of Invention
The invention aims to provide a nanoparticle self-assembly deposition method based on magnetic field regulation. The technology can realize the preparation of uniform deposition patterns and dense parallel chain-shaped microstructure deposition patterns by applying a horizontal magnetic field through a Helmholtz coil and controlling the evaporation speed of liquid drops through a constant-temperature heating base.
In order to solve the technical problems, the invention adopts the following technical scheme:
a nanoparticle self-assembly deposition method based on magnetic field regulation, the method comprising:
step one: setting up an inkjet printing and depositing device based on magnetic field regulation; the device comprises:
the device comprises a Helmholtz coil, ink-jet printing equipment and a constant-temperature heating base, wherein the Helmholtz coil is arranged on two sides of the constant-temperature heating base, and the ink-jet printing equipment is arranged on the constant-temperature heating base;
step two: placing ink in an ink-jet printing device, wherein the ink is magnetic fluid ink or magnetic nanoparticle ink;
step three: designing a printing circuit to print or using a liquid shifter to coat a dot matrix and a circuit, starting a Helmholtz coil to electrify and apply a magnetic field, setting the magnetic field strength to be more than 20mT, placing a printing substrate on a constant temperature heating base, setting the temperature of the constant temperature heating base to be 50-70 ℃ lower than the boiling point of an ink solvent, and depositing a single-layer microstructure flux linkage pattern on a substrate through ink-jet printing;
step four: and fusing and superposing the microstructure flux linkage by changing the direction of the magnetic field to form a multilayer microstructure pattern.
Preferably, the magnetic fluid ink comprises a water-based or kerosene-based ferrofluid oxide ink.
Preferably, the magnetic nanoparticle ink is obtained by mixing magnetic particles and a dispersion solvent, wherein the magnetic particles are iron, cobalt, nickel or nanoparticles coated with iron, cobalt and nickel.
Preferably, the magnetic particles have a particle size of less than 50nm.
Preferably, the dispersion solvent is one or more selected from deionized water, ethylene glycol, terpineol, cyclohexane or isopropanol.
Preferably, the mass fraction of the ink is 2% -20%.
Preferably, a stabilizer is added into the ink, the stabilizer is PVP or xanthan gum, and the addition amount of the stabilizer is preferably 0.05-1% by mass.
Preferably, the printing substrate is silicon carbide, aluminum nitride, aluminum oxide, glass, bakelite, tissue paper or PI film.
Preferably, the multi-layer microstructure pattern obtained in the fourth step is placed in a tube furnace for sintering, the sintering heating temperature is set to be 700 ℃ at the highest, the heating time is set to be 30min, and the constant temperature time is set to be 10min, so that the cross microstructure conductive circuit is obtained.
Principles of the invention
The invention provides a nanoparticle self-assembly deposition method based on magnetic field regulation, wherein a Helmholtz coil is used for magnetic field application, the Helmholtz coil consists of two groups of coils, the distance between the coils is the radius of the coils, and a relatively uniform magnetic field can be generated in the center of the coils after the coils are electrified. The helmholtz coil needs to be compatible with inkjet printing devices in order to be able to apply a magnetic field during printing. The magnetic nano-particle liquid drop is placed on the surface of the constant temperature heating base, the liquid drop can be evaporated and deposited, a magnetic field is applied in the evaporation process, and the magnetic nano-particle in the liquid drop can generate self-assembly effect. The principle of the self-assembly effect is shown in fig. 1. When two paramagnetic particles are aligned perpendicular to the line of magnetic induction, they repel each other (fig. 1 a), and when they are aligned parallel to the line of magnetic induction, they attract each other and form a chain (fig. 1 b).
By controlling the heating temperature and the magnetic field strength, the ink can obtain different deposition forms: in the absence of a magnetic field, the droplets will evaporate in a pattern of coffee ring deposition, eventually obtaining a ring-shaped non-uniform deposition pattern (see fig. 2 a); at low magnetic field strengths (10 mT and below) and high substrate temperatures (specific temperature is related to the boiling point of the ink solvent), the droplets will obtain a nearly uniform deposition pattern, but their internal microstructure cannot be resolved (as in fig. 2 b); under the condition of high magnetic field intensity (more than 10 mT) and low substrate temperature, the self-assembled flux linkage microstructure inside the liquid drop can resist internal flow and remain until complete evaporation, so that a clear and dense parallel chain microstructure deposition pattern is obtained.
On the basis of a single-layer microstructure, a complex microstructure pattern can be prepared by changing the direction of a magnetic field and the positions of liquid drops. The preparation of large scale complex microstructures relies on two effects: (1) fusion of microstructure flux linkage. As shown in fig. 3a, under the action of a magnetic field, the patterns of the microstructures deposited front and back are fused with each other, so as to form an uninterrupted flux linkage pattern; (2) superposition of microstructured flux linkages. As shown in fig. 3b, the deposited droplets are deposited by changing the direction of the magnetic field, and the patterns of microstructures deposited one after the other are superimposed on each other, thereby forming complex microstructures intersecting each other.
The beneficial effects of the invention are that
Compared with the traditional droplet deposition regulation means for regulating the properties of ink, the properties of a substrate and the morphology of particles, the magnetic field-based nanoparticle self-assembly deposition method has the advantages of strong regulation and control effect, wide application range, and capability of being matched with passive regulation and control, and has incomparable advantages with the traditional passive regulation and control. In addition, the magnetic field regulation and control can manufacture parallel chain-shaped microstructure deposition patterns, and the patterns can further manufacture complex microstructures in a multi-droplet fusion and superposition mode, and can be applied to various preparation scenes, such as preparation of flexible extension circuits, preparation of light-transmitting conductive films and the like.
Drawings
FIG. 1 is a graph showing the effect of self-assembly effect of the nanoparticles of the present invention under the action of a magnetic field;
FIG. 2 is a pattern of densely-parallel chain-like microstructure deposition prepared under high magnetic field strength according to the present invention;
FIG. 3 is a graph showing the effect of fusion of the microstructure linkages and superposition of the microstructure linkages of the present invention;
FIG. 4 is a flow chart of the preparation of the cross-micro-structured conductive traces according to embodiment 1 of the present invention;
FIG. 5 is a microscopic view of the actual printed circuit of the cross-microstructured conductive circuit of example 1 of the present invention;
FIG. 6 is a schematic diagram of a magnetic field control-based ink jet printing deposition apparatus according to the present invention;
FIG. 7 is an enlarged view of a portion of a displacement mechanism and a constant temperature heating base of an inkjet printing deposition apparatus based on magnetic field regulation in accordance with the present invention;
FIG. 8 is a schematic diagram of the X-axis displacement mechanism and Y-axis displacement mechanism of the present invention;
fig. 9 is a schematic view of the structure of a rotatable print substrate of the present invention.
In the figure: 1. a top view camera; 2. a helmholtz coil; 3. an ink supply pipe; 4. printing a nozzle; 5. a side view camera; 6. an X-axis displacement mechanism; 7. heating the base at constant temperature; 8. a Y-axis displacement mechanism; 9. a rotatable print substrate; 10. a frame unit; 11. a device driving power supply; 12. a gas source; 13. an ink tank; 14. an inkjet printing drive module; 15. a stepping motor; 16. a guide rail; 17. a sliding table; 18. a screw rod; 19. an upper rotating sleeve; 20. the lower part is fixed with a sleeve.
Detailed Description
A nanoparticle self-assembly deposition method based on magnetic field regulation, the method comprising:
step one: setting up an inkjet printing and depositing device based on magnetic field regulation; the device comprises:
the device comprises a Helmholtz coil, ink-jet printing equipment and a constant-temperature heating base, wherein the Helmholtz coil is arranged on two sides of the constant-temperature heating base, and the ink-jet printing equipment is arranged on the constant-temperature heating base; the Helmholtz coil is used for manufacturing a horizontal magnetic field with uniform intensity, the inkjet printing equipment drives the nozzle to manufacture printing liquid drops according to requirements through a pulse electric signal, the heating base controls the temperature of the heating base to be constant at a set temperature through a PID algorithm, and the heating temperature range can reach 180 ℃ at most;
step two: placing ink in an ink-jet printing device, wherein the ink is magnetic fluid ink or magnetic nanoparticle ink, the magnetic fluid ink preferably comprises water-based ferrofluid oxide ink or kerosene-based ferrofluid oxide ink, the magnetic nanoparticle ink is obtained by mixing magnetic particles and a dispersion solvent, the magnetic particles are preferably iron, cobalt and nickel or nanoparticles coated with iron, cobalt and nickel, the particle size of the magnetic particles is less than 50nm, the sources are commercial, and the dispersion solvent is preferably one or more selected from deionized water, ethylene glycol, terpineol, cyclohexane and isopropanol; the mass fraction of the ink is preferably 2% -20%. The ink can be preferably added with a stabilizer which is PVP or xanthan gum, and the addition amount of the stabilizer is preferably 0.05-1% by mass; after the magnetic nanoparticle ink is prepared, the magnetic nanoparticle ink is preferably placed in an ultrasonic crusher for ultrasonic depolymerization for 2-3 hours, the power of the ultrasonic crusher is preferably 240w, and the ink is taken out for filtering;
step three: designing a printing circuit to print or using a liquid shifter to coat a dot matrix and a circuit, starting a Helmholtz coil to electrify and apply a magnetic field, setting the magnetic field strength to be more than 20mT, placing a printing substrate on a constant temperature heating base, setting the temperature of the constant temperature heating base to be 50-70 ℃ lower than the boiling point of an ink solvent, and depositing a single-layer microstructure flux linkage pattern on a substrate through ink-jet printing; the printing base is preferably silicon carbide, aluminum nitride, aluminum oxide, glass, bakelite plate, tissue paper or PI film;
step four: and fusing and superposing the microstructure flux linkage by changing the direction of the magnetic field to form a multilayer microstructure pattern.
After the multilayer microstructure pattern is obtained in the embodiment, the pattern obtained by printing is preferably placed in a tube furnace for sintering, and helium is introduced to prevent oxidation of the circuit in the sintering process; for printing materials with poor temperature resistance of the substrate, laser sintering can be used, and finally, a conductive circuit or a corresponding sensor or component can be obtained. The set sintering heating temperature is 700 ℃ at most, the heating time is preferably 30min, and the constant temperature time is preferably 10min. And after heating, naturally cooling the substrate to room temperature in a tube furnace, and finally obtaining the cross microstructure conductive circuit.
As shown in fig. 6 and 7, the magnetic field regulation-based inkjet printing deposition apparatus according to the present embodiment includes:
the device comprises a frame unit 10, wherein a Helmholtz coil 2, a rotatable printing substrate 9, a displacement mechanism, a constant temperature heating base 7, an observation system, an ink supply pipeline 3 and a printing nozzle 4 are arranged in the frame unit 10;
the Helmholtz coils 2 are arranged on two sides of the rotatable printing substrate 9, a displacement mechanism is arranged above the rotatable printing substrate 9, a constant-temperature heating base 7 is arranged above the displacement mechanism, a printing nozzle 4 is arranged above the constant-temperature heating base 7, an ink supply pipeline 3 is arranged above the printing nozzle 4, and a printing nozzle piezoelectric ceramic driving signal line is integrated on the ink supply pipeline 3;
the ink supply pipeline 3 and the observation system are respectively connected with the frame unit 10; the observation system comprises a top observation camera 1 and a side view camera 5, wherein the top observation camera 1 is arranged above the printing nozzle 4 and is connected with the top of the frame unit 10, and the side view camera 5 is arranged on the side of the printing nozzle and is connected with the side of the frame unit 10.
The device is characterized in that a device driving power supply 11, an air source 12, an ink storage tank 13 and an ink jet printing driving module 14 are arranged above the frame unit 10, the device driving power supply 11 is electrically connected with the Helmholtz coil 2, the ink supply pipeline 3 is connected with the ink storage tank 13, the ink storage tank 13 is connected with the air source 12, and a printing nozzle piezoelectric ceramic driving signal line is connected with the ink jet printing driving module 14. The ink supply pipeline 3, the printing nozzle 4, the air source 12, the ink storage tank 13 and the ink jet printing driving module 14 form ink jet printing equipment.
As shown in fig. 9, the rotatable print substrate 9 according to the present embodiment is composed of an upper rotatable sleeve 19 and a lower fixed sleeve 20, and the upper rotatable sleeve 19 is sleeved with the lower fixed sleeve 20. The upper rotating sleeve 19 can be manually adjusted, can be rotated in any direction and fixed at any angle, thereby realizing the change of the magnetic field direction during printing.
As shown in fig. 8, the displacement mechanism in this embodiment includes an X-axis displacement mechanism 6 and a Y-axis displacement mechanism 8, where the X-axis displacement mechanism 6 is disposed above the Y-axis displacement mechanism 8, and the X-axis displacement mechanism 6 and the Y-axis displacement mechanism 8 have the same structure and respectively include a stepper motor 15, a guide rail 16, a sliding table 17, and a screw 18, where the stepper motor 15 is disposed on one side of the guide rail 16 and connected to the screw 18, and the sliding table 17 and the screw 18 are both disposed on the guide rail 16; the stepper motor 15 drives the lead screw 18 to rotate, and the lead screw 18 drives the sliding table 17 to reciprocate in the length direction of the guide rail 16.
The frame unit 10 according to the present embodiment includes an upper and a lower platforms and a four-sided frame, and the frame unit 10 is made of aluminum alloy.
The structure of the constant temperature heating base 7 according to the present embodiment is not particularly limited, and the conventional constant temperature heating base 7 may be adopted, and the present invention realizes a constant temperature heating function by providing a heating sheet made of copper blocks inside the base.
In this embodiment, the ink supply tube 3, the printing nozzle 4 and the ink storage tank 13 are coated with a layer of magnetic flexible material, and the high-intensity magnetic field generated by the helmholtz coil 2 interferes with the normal operation of the inkjet printer device, so that the device susceptible to interference needs to be coated with a magnetic shielding material, thereby avoiding the interference of the magnetic field on the devices.
The device driving power supply 11 according to this embodiment can realize fast switching and fast adjustment of magnetic field intensity, and the inkjet printing device needs to regulate and control the current and voltage of the helmholtz coil 2 to manufacture a constant magnetic field, and the model of the device driving power supply 11 is MP2005D.
The present invention will be described in further detail with reference to specific examples.
Example 1 nickel nanoparticle ink magnetic field inkjet printing a cross-microstructural conductive line was prepared, the flow of which is shown in figure 4,
step one: setting up an inkjet printing and depositing device based on magnetic field regulation;
step two: nickel nanoparticle ink configuration
Purchasing nickel nano particles with the particle size smaller than 50nm, and mixing the nickel nano particles with a glycol solvent, wherein the mass fraction of the nickel nano particles is 10%; placing the ink into an ultrasonic crusher to carry out ultrasonic depolymerization for 2 hours, wherein the power of the ultrasonic crusher is 240w; taking out the ink and filtering the ink by a 50 mu m pore size filter to finally obtain the nickel nanoparticle ink which can be used for printing;
step three: printing single layer lines using a magnetic field inkjet printer
Placing ink in the ink-jet printing equipment, and adjusting the air pressure of an ink supply pipeline and the driving waveform of the nozzle piezoelectric ceramics so that the ink-jet printing equipment can generate stable ink drops; placing a printing substrate on a constant-temperature heating base, and setting the heating temperature to be 80 ℃; switching on a Helmholtz coil power supply, setting the magnetic field strength to be 30mT, and enabling the magnetic field direction to be +45 degrees with the printing line direction; printing a circuit to obtain a single-layer microstructure deposition pattern;
step four: printing multi-layer microstructured patterns
Changing the magnetic field direction to be-45 degrees with the direction of the printing circuit, and printing again to obtain a double-layer crossed microstructure circuit;
step five: sintering to conduct the circuit
Placing the printed circuit and the constant-temperature heating base in a tube furnace, and introducing helium to prevent oxidation of the circuit in the sintering process; setting the highest heating temperature to 700 ℃, heating up for 30min and keeping the temperature for 10min; and after the addition, naturally cooling the substrate to room temperature in a tube furnace, and finally obtaining the cross microstructure conductive circuit.
The circuit has better electric conductivity and interface stress resistance due to the existence of the microstructure. The actual circuit microscopic image obtained by printing is shown in fig. 5, wherein fig. 5a represents the magnetic field direction +45 degrees, a layer of microscopic image is printed, 5b represents the magnetic field direction and the circuit +45 degrees, a layer is printed by-45, and two layers of microscopic images are printed.

Claims (9)

1. The self-assembled nano particle deposition method based on magnetic field regulation and control is characterized by comprising the following steps:
step one: setting up an inkjet printing and depositing device based on magnetic field regulation; the device comprises:
the device comprises a Helmholtz coil, ink-jet printing equipment and a constant-temperature heating base, wherein the Helmholtz coil is arranged on two sides of the constant-temperature heating base, and the ink-jet printing equipment is arranged on the constant-temperature heating base;
step two: placing ink in an ink-jet printing device, wherein the ink is magnetic fluid ink or magnetic nanoparticle ink;
step three: designing a printing circuit to print or using a liquid shifter to coat a dot matrix and a circuit, starting a Helmholtz coil to electrify and apply a magnetic field, setting the magnetic field strength to be more than 20mT, placing a printing substrate on a constant temperature heating base, setting the temperature of the constant temperature heating base to be 50-70 ℃ lower than the boiling point of an ink solvent, and depositing a single-layer microstructure flux linkage pattern on the substrate through ink-jet printing;
step four: and fusing and superposing the microstructure flux linkage by changing the direction of the magnetic field to form a multilayer microstructure pattern.
2. The method for self-assembled deposition of nanoparticles based on magnetic field control of claim 1, wherein the magnetic fluid ink comprises water-based or kerosene-based ferrofluid oxide ink.
3. The magnetic field regulation-based nanoparticle self-assembly deposition method of claim 2, wherein the magnetic nanoparticle ink is obtained by mixing magnetic particles and a dispersion solvent, and the magnetic particles are iron, cobalt, nickel or nanoparticles doped with iron, cobalt and nickel.
4. The method for self-assembled deposition of nanoparticles based on magnetic field control of claim 3, wherein the magnetic particles have a particle size of less than 50nm.
5. The method for self-assembled deposition of nanoparticles based on magnetic field control as recited in claim 3, wherein said dispersion solvent is one or more selected from deionized water, ethylene glycol, terpineol, cyclohexane and isopropanol.
6. The magnetic field control-based nanoparticle self-assembly deposition method of claim 3, wherein the mass fraction of the magnetic particles in the ink is 2% -20%.
7. The nanoparticle self-assembly deposition method based on magnetic field regulation and control according to claim 1, wherein a stabilizer is added into the ink, the stabilizer is PVP or xanthan gum, and the addition amount of the stabilizer is 0.05-1% by mass.
8. The magnetic field control-based nanoparticle self-assembly deposition method of claim 1, wherein the print substrate is silicon carbide, aluminum nitride, aluminum oxide, glass, bakelite, tissue paper or PI film.
9. The nanoparticle self-assembly deposition method based on magnetic field regulation and control according to claim 1, wherein the multilayer microstructure pattern obtained in the fourth step is sintered in a tube furnace, the sintering heating temperature is set to be 700 ℃ at the highest, the heating time is set to be 30min, and the constant temperature time is set to be 10min, so that the cross microstructure conductive line is obtained.
CN202210256641.8A 2022-03-16 2022-03-16 Nanoparticle self-assembly deposition method based on magnetic field regulation and control Active CN114523780B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210256641.8A CN114523780B (en) 2022-03-16 2022-03-16 Nanoparticle self-assembly deposition method based on magnetic field regulation and control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210256641.8A CN114523780B (en) 2022-03-16 2022-03-16 Nanoparticle self-assembly deposition method based on magnetic field regulation and control

Publications (2)

Publication Number Publication Date
CN114523780A CN114523780A (en) 2022-05-24
CN114523780B true CN114523780B (en) 2023-04-21

Family

ID=81626327

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210256641.8A Active CN114523780B (en) 2022-03-16 2022-03-16 Nanoparticle self-assembly deposition method based on magnetic field regulation and control

Country Status (1)

Country Link
CN (1) CN114523780B (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004345192A (en) * 2003-05-21 2004-12-09 Kri Inc Magnetic recording method and readable/writable magnetic printer
US8597420B2 (en) * 2011-03-17 2013-12-03 Xerox Corporation Solvent-based inks comprising coated magnetic nanoparticles
CN102723437A (en) * 2011-03-29 2012-10-10 中国科学院微电子研究所 Optical memory cell, optical memory and preparation method thereof
AU2015352705A1 (en) * 2014-11-27 2017-03-09 Sicpa Holding Sa Devices and methods for orienting platelet-shaped magnetic or magnetizable pigment particles
CN105772722B (en) * 2016-03-11 2018-01-23 嘉兴学院 A kind of control device and apparatus and method for of control electric current body dynamics print resolution
CN107685539B (en) * 2017-09-22 2019-04-23 京东方科技集团股份有限公司 Ink jet printing head, ink-jet system for measuring quantity and method and ink-jet amount control method
CN112537024A (en) * 2019-09-20 2021-03-23 西北工业大学 Electromagnetic control device for surface-projected photocuring 3D printer and application method thereof
CN110843350B (en) * 2019-11-26 2021-02-26 京东方科技集团股份有限公司 Ink-jet printing method, ink-jet printing device and display device
CN214226949U (en) * 2021-01-22 2021-09-17 福建华佳彩有限公司 Ink-jet printing structure

Also Published As

Publication number Publication date
CN114523780A (en) 2022-05-24

Similar Documents

Publication Publication Date Title
Guo et al. One‐step liquid metal transfer printing: toward fabrication of flexible electronics on wide range of substrates
JP6989831B2 (en) Metal material processing equipment
US7277770B2 (en) Direct write process and apparatus
TWI494384B (en) Metallic ink
EP3355668B1 (en) Interlayer printing process
Rho et al. Highly crystalline Ni/NiO hybrid electrodes processed by inkjet printing and laser-induced reductive sintering under ambient conditions
JP7477581B2 (en) Dispersion, method for producing conductive patterned structure using same, and conductive patterned structure
US20090230222A1 (en) Apparatuses and methods for applying one or more materials on one or more substrates
JP2011256382A (en) Silver nanoparticle composition comprising solvent with specific hansen solubility parameter
Samarasinghe et al. Printing gold nanoparticles with an electrohydrodynamic direct-write device
JP2004247572A (en) Method for forming fine wiring pattern
Parupelli et al. Hybrid additive manufacturing (3D printing) and characterization of functionally gradient materials via in situ laser curing
KR20060096422A (en) Laser processing for heat-sensitive mesoscale deposition
KR20180010560A (en) 3D Printing of Highly Conductive CNT Microarchitecture And Ink Therefor
KR102190291B1 (en) Ag Ink For 3D Printing And 3D Printing Methods Using The Same
Wang et al. High resolution print-patterning of a nano-suspension
CN114523780B (en) Nanoparticle self-assembly deposition method based on magnetic field regulation and control
Ma et al. Electrohydrodynamic printing of ultrafine and highly conductive Ag electrodes for various flexible electronics
CN114474997B (en) Inkjet printing deposition equipment based on magnetic field regulation and control
Liang et al. Femtosecond Laser Patterning Wettability‐Assisted PDMS for Fabrication of Flexible Silver Nanowires Electrodes
KR20150118801A (en) Conductive composite Cu ink and light sintering method using the same
JP2019178059A (en) Method for manufacturing dispersion
Son et al. Optimization of dispersant-free colloidal ink droplets for inkjet patterning without the coffee-ring effect using 1-octanethiol-coated copper nano-ink with a Standard Clean-1-treated substrate
Samarasinghe et al. Electric-jet assisted layer-by-layer deposition of gold nanoparticles to prepare conducting tracks
CN112095099A (en) Cold spraying device for nano particles

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant