CN1966399A - Micro nano structure direct-writing device - Google Patents
Micro nano structure direct-writing device Download PDFInfo
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- CN1966399A CN1966399A CN 200610135261 CN200610135261A CN1966399A CN 1966399 A CN1966399 A CN 1966399A CN 200610135261 CN200610135261 CN 200610135261 CN 200610135261 A CN200610135261 A CN 200610135261A CN 1966399 A CN1966399 A CN 1966399A
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Abstract
The invention relates to a micrometer-nanometer structure writer of polymer material, wherein it is based on near-field static spinning technique, to quickly write adhesive material or macromolecule material, while the minimum diameter/line width is lower than 300nm/20 mum. It has micro probe control platform, integrated high-voltage static power source, flux controller, X-Y platform, probe and CCD microscope; the integrated high-voltage static power source can power the probe, while its anode is connected to probe and cathode is connected to ground; the flux controller is fixed on the micro probe control platform, while it is connected to probe via tube; the probe is used as ejector of material, while it is mounted on micro probe control platform; the microscope is used to detect the spinning process and the writing effect, while it is arranged on micro probe control platform.
Description
Technical field
The present invention relates to a kind ofly, especially relate to a kind of polymeric material direct-writing device of sub-micron live width based on little, the material of nanoscale of electrostatic spinning technique or the direct spray write device of pattern.
Background technology
In the research and development of micro-nano device, nano wire (nanowire), nanotube (nanotube) and the nanofiber (nanofiber) of realizing position, direction and controllable number and micrometer structure (as microelectrode) integrated is the key of manufacturing nano-device such as nano-sensor, actuator.The research of nano material has obtained significant achievement and has presented wide Commercial Prospect, has obtained good economic benefits.In view of its special good physics and chemical property, low-dimension nano material is the basic material that makes up nano-device and nanostructured, and domestic and international large quantities of scholars put into the research and development and the exploitation of electronic device, optics, sensor, actuator and biological function device based on low-dimension nano material one after another.Western countries predictions may realize the industrialization of the nano-device of tool market prospects after 7 years, this will be the another new breakthrough of nanometer technology industrialization.Yet, how to handle the nano wire of (or growth) position, direction and controllable number, nanotube and nanofiber, realize the integrated of itself and micrometer structure (as microelectrode etc.), becoming the key of present nano-device research, is the following basic key technology that must solve that realizes the nano-device industrialization.
Nano-manipulation and micro nano structure integrated technology have become the focus of international in recent years nano-device technical research, but still are in the starting stage.Correlative study mainly concentrates on three aspects: (1) serial is handled.Realize single nano-wire based on nanoscale motion control platform, mechanical handling (the T.Fukuda of nanotube, F.Arai, and L.X.Dong, Assembly ofNanodevices with Carbon Nanotubes through Nanorobotic Manipulations, Proceedings ofthe IEEE, 2003,91, (11): 1803-1818).System complex, efficient is low, the cost height.(2) parallel operation.The nano wire, the nanotube that are scattered in the solution realize that by means of modes such as outfield (as electromagnetic field, flow field, light etc.), LB film and chemical self assemblies the large tracts of land parallelization aligns (S.G.Rao, S.Huang, Large-scale assembly of carbonnanotubes.Nature, 2003,425:36).(3) control growth.The microelectrode of deposited catalyst is placed in control gas componant, pressure, flow, the isoparametric chamber of temperature, oriented growth nano wire, nanotube under the electromagnetic field guiding, and be connected to (Ongi Englander on the relative microelectrode, Dane Christensen, JongBaeg Kim, Liwei Lin andStephen Morris, Electric-Field Assisted Growth and Self-Assembly of IntrinsicSilicon Nanowires, Nano Letters, 2005,5 (4): 705-708).Above-mentioned (2) and (3) belong to parallel method, can realize that big face is integrated, have engineering significance, but position, quantity are difficult to control, can't guarantee the uniformity of device.
The making that is created in microelectronics and micro-nano Mechatronic Systems (M/NEMS) of micro nano structure or pattern is a most key step.At present comparatively ripe and micro nano structure, figure generating technique that be widely used are main as electron beam, ion beam and X-Ray etc., and soft etching such as micro-contact printing, dip in and technology such as nanometer impression.Its complex process, cost an arm and a leg (hundreds thousand of to millions of dollar), development cost height are not suitable for the exploitation or the manufacturing of large tracts of land and flexible device; Also be not suitable for micro-nano device, particularly the research and development of the principle prototype of simple structure device such as sensor etc.The direct writing technology of micro nano structure replenishing or substituting as above-mentioned technology, has vast market prospect at the research and development and the production field of micro-nano device.
The research of the electrostatic spinning technique of learning based on electrohydraulic dynamic can be traced back to 1934 (Formhals, A.Process andapparatus for preparing artificial threads US Patent 1,975,504 (1934)).Contain polymer liquid and drop in and be full of electric charge under the high voltage electric field effect and make drop deformation form the Taylor awl, and then eject nanofiber and the nanotube that continuous diameter is roughly 100nm, thereby be expected to become the strong instrument that nano-device is made.Yet traditional electrostatic spinning technique is because it depends on the nanofiber that quick, mixed and disorderly motion obtains the nanoscale diameter, and the uncertainty of its position, direction and quantity etc. makes traditional electrospinning be difficult to processing or writes out the figure that people need.
Some famous research institutions, enterprise drop into this technology of exploitation one after another in the world, as Dimatix, and XAAR, HP, Fuji etc.Dimatix develops first electronics spray printing equipment and puts about 80,000 dollars of prices on market this year.XAAR has also developed commercial printhead, 4000 dollars of prices.The domestic any report that does not also have correlative study.Present material jet-printing head is still based on traditional ink jet-print head technology, the about 10pl of minimum drop, and minimum feature 50 μ m further reduce very difficulty of live width, have limited this The Application of Technology scope greatly.
Summary of the invention
The objective of the invention is to the inherent shortcoming at the conventional electrostatic spining technology---randomness, provide a kind of based on " near field electrostatic spinning (Near-Field ElectroSpinning) " technology, realize macromolecular material or have directly writing fast of certain cohesive material, minimum diameter/live width can be lower than 300nm/20 μ m, broken through the line width limit of spray printing technology, range of application is micro nano structure direct-writing device more widely.
The present invention is provided with microprobe control platform, integrated high voltage static power supply (1kV), accurate flow controller, high speed and precision X-Y platform (1.1m/s), probe and CCD microscope.Microprobe control platform is used to regulate probe and writes distance between the substrate; Integrated high voltage static power supply is used to offer the suitable voltage of probe, thereby forms high voltage electric field, makes material eject the lines of sub-micron from probe, and the positive pole of integrated DC high voltage source connects probe, minus earth; Accurate flow controller is fixed on the microprobe control platform, accurate flow controller is used for the feeding of material, thereby the size of the droplets of materials on the control probe, accurate flow controller are by the pipeline linking probe, and material is transported to probe by accurate flow controller by pipeline; The high speed and precision X-Y platform is used for going out the position that material writes in the two-dimensional space accurate localization, thereby realizes writing of two-dimensional space figure; The spinning head that probe is directly write as material, probe are installed on the microprobe control platform; Microscope is used to observe the effect that electrostatic spinning process and material write figure, and microscope is located on the microprobe control platform.
It is 1.1m/s that X-Y platform can adopt translational speed, and 500nm displacement resolution, 5g acceleration, stroke are the high speed and precision X-Y platform of 150mm.
Microprobe control platform is 500 μ m-3mm in the position adjustments scope of Z direction.The flow-control of accurate flow controller is at 4～10pl/s.High-voltage electrostatic power is controlled in the 1kV, and is embedded on the microprobe control platform.
The basic functional principle of the material direct-writing device of sub-micron live width is, offers the material of probe by accurate flow controller, under the effect of high-voltage electrostatic field, ejects the lines of single sub-micron live width.Because the distance between spinneret and the substrate is less, make the lines of ejection before disordered motion occurring, just be deposited over on-chip assigned address.Because the certainty of position under the drive of X-Y precision movement platform, can directly be write out needed figure or pattern.
Potential application of the present invention also comprises:
(1) nano wire and nanotube are controlled.Although some monodimension nanometer material performance brilliances lack and effectively control the structure plan that technology forms to be needed, can't in practical devices, be applied.Nano wire/pipe is evenly spread in the Polymer Solution, in the nanofiber of electrospinning, will obtain orderly, end to end nano wire/pipe.
(2) the moulding manufacturing of biological tissue.Biological tissue has complicated micro nano structure system, requires biological support to have multiple dimensioned structure from Na Guan to the macro-scale.Under normal temperature and normal pressure, carry out material and structure direct-writing, can directly apply to biological support and organize moulding with controllable micro-nano rice structure.
(3) fibre reinforced composites and moulding thereof.Micro nano structure, material direct writing technology will reduce development cost greatly, shorten the construction cycle; Adopt the material adding method greatly to improve the utilization rate of material.
Outstanding advantage of the present invention mainly shows: 1) compare with the spray printing technology, it is following until 100nm that the micro nano structure that electrostatic spinning technique is directly write can be controlled in 20 μ m, and material is even.2) compare with the conventional electrostatic spinning, the near field electrostatic spinning is directly write locations of structures, direction and controllable number, and spinning voltage reduces (about 1KV) greatly, well below traditional electrospinning voltage (greater than 10KV).3) can directly write the live width of structure by adjusting the control of substrate to be written and sprinkler spacing.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The specific embodiment
Referring to Fig. 1, microprobe of the present invention control platform is provided with Y direction line slideway 1, the spacing slide bar 2 of Y direction, Y direction slide block 3, hold-down support 4, Z direction line slideway controller 5, Z direction line slideway 6, directions X slide block 7, the spacing slide bar 8 of directions X, directly writes zone 9, accurate flow-control and high-voltage electrostatic power 10, probe 11, CCD microscope 12, high speed and precision X-Y platform 13, directions X line slideway controller 14, directions X line slideway 15, Y direction line slideway controller 16 and control computer 17.
Wherein directions X line slideway 15 and Y direction line slideway 1 be respectively under the induced effect of directions X line slideway controller 14 and Y direction line slideway controller 16, according to control computer 17 given locating information control probe 11 on high speed and precision X-Y platform 13, directly write exact position in the zone 9.The direction that spacing slide bar 8 of directions X and the spacing slide bar 2 of Y direction are respectively applied for directions X slide block 7 and Y direction slide block 3 limits, and plays the effect of guide rail.Hold-down support 4 plays the fixedly effect of directions X line slideway 15 and the spacing slide bar 8 of directions X, is connected with high speed and precision X-Y platform 13 simultaneously.Accurate flow-control and high-voltage electrostatic power 10 are connected with Z direction line slideway controller 5 by Z direction line slideway 6 with probe 11, thereby are realizing probe 11 under the induced effect of Z direction line slideway controller 5 and directly writing distance adjustment between regional 9.CCD microscope 12 is used to observe the process of directly writing of material and the pattern result is estimated.
The high speed and precision X-Y platform has 500nm displacement resolution, 1.1m/s translational speed, 5g acceleration, and stroke is 150mm.Can be by parameters such as computer control acceleration of motion, speed, positions.Probe is 3mm with directly writing the initial distance of zone on the Z direction.Position adjustments scope in the Z direction is 500 μ m-3mm.
The flow-control of accurate flow controller is between 4pl/s-10pl/s.High-voltage electrostatic power is controlled in the 1kV.Micro-meter scale liquid material live width is less than 20 μ m; The solid-state fibre diameter of nanoscale is less than 300nm; Directly write position error less than 20 μ m.
Claims (7)
1. micro nano structure direct-writing device is characterized in that being provided with microprobe control platform, integrated high voltage static power supply, flow controller, X-Y platform, probe and CCD microscope, and microprobe control platform is used to regulate probe and writes distance between the substrate; Integrated high voltage static power supply is used to probe that voltage is provided, and the positive pole of integrated DC high voltage source connects probe, minus earth; Flow controller is fixed on the microprobe control platform, and flow controller is used for the feeding of material, and flow controller is by the pipeline linking probe; X-Y platform is used for going out the position that material writes in the two-dimensional space accurate localization, realizes writing of two-dimensional space figure; The spinning head that probe is directly write as material, probe are installed on the microprobe control platform; Microscope is used to observe the effect that electrostatic spinning process and material write figure, and microscope is located on the microprobe control platform.
2. micro nano structure direct-writing device as claimed in claim 1 is characterized in that integrated high voltage static power supply is 1kV.
3. micro nano structure direct-writing device as claimed in claim 1 is characterized in that X-Y platform is that translational speed is 1.1m/s, and 500nm displacement resolution, 5g acceleration, stroke are the X-Y platform of 150mm.
4. micro nano structure direct-writing device as claimed in claim 1 is characterized in that microprobe control platform is 500 μ m-3mm in the position adjustments scope of Z direction.
5. micro nano structure direct-writing device as claimed in claim 1, the flow-control that it is characterized in that accurate flow controller is at 4～10pl/s.
6. micro nano structure direct-writing device as claimed in claim 1 is characterized in that high-voltage electrostatic power is controlled in the 1kV.
7. as claim 1 or 6 described micro nano structure direct-writing devices, it is characterized in that high-voltage electrostatic power is embedded on the microprobe control platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB200610135261XA CN100513300C (en) | 2006-11-28 | 2006-11-28 | Micro nano structure direct-writing device |
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| CNB200610135261XA CN100513300C (en) | 2006-11-28 | 2006-11-28 | Micro nano structure direct-writing device |
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| CN1966399A true CN1966399A (en) | 2007-05-23 |
| CN100513300C CN100513300C (en) | 2009-07-15 |
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| CNB200610135261XA Expired - Fee Related CN100513300C (en) | 2006-11-28 | 2006-11-28 | Micro nano structure direct-writing device |
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| CN103083719A (en) * | 2013-01-14 | 2013-05-08 | 上海大学 | Method and system for forming intravascular stent through fused direct writing electrostatic spinning |
| CN103265009A (en) * | 2013-05-24 | 2013-08-28 | 厦门大学 | Preparation method of horizontal array carbon nano tube |
| CN103320877A (en) * | 2013-07-09 | 2013-09-25 | 苏州大学 | Method for preparing degradable tissue engineering three-dimensional support and device for machining degradable tissue engineering three-dimensional support |
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| CN104261343A (en) * | 2014-09-02 | 2015-01-07 | 西安交通大学 | Low-cost micro/nano structure etching method based on electrostatic direct writing |
| CN106048900A (en) * | 2016-06-04 | 2016-10-26 | 上海大学 | Six degrees of freedom motion platform based curved surface electrostatic direct-writing forming system |
| CN106367818A (en) * | 2016-10-21 | 2017-02-01 | 上海工程技术大学 | Dot-matrix type receiver for electrostatic spinning and method for preparing nanofibers |
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