CN104199392A - Gallium solenoid micro-coil with circular cross section based on bonding of capillary tube and double-faced adhesive tape and preparation method of micro-coil - Google Patents
Gallium solenoid micro-coil with circular cross section based on bonding of capillary tube and double-faced adhesive tape and preparation method of micro-coil Download PDFInfo
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- CN104199392A CN104199392A CN201410361495.0A CN201410361495A CN104199392A CN 104199392 A CN104199392 A CN 104199392A CN 201410361495 A CN201410361495 A CN 201410361495A CN 104199392 A CN104199392 A CN 104199392A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a gallium solenoid micro-coil with a circular cross section based on bonding of a capillary tube and a double-faced adhesive tape and a preparation method of the micro-coil. The micro-coil comprises a three-layer structure which orderly comprises a capillary tube inner layer (10), a double-faced adhesive tape middle layer (20) and a double-faced adhesive tape outer layer (30) from inside to outside; a sample cavity (11) is formed in the capillary tube inner layer (10); a solenoid micro-coil cavity (21) is formed in the double-faced adhesive tape middle layer (20); a first bonding pad cavity (31) and a second bonding pad cavity (32) are formed in the double-faced adhesive tape outer layer (30). The gallium solenoid micro-coil is capable of effectively solving the problems of high process complexity, high fabrication cost and the like of the existing solenoid micro-coil without scarifying high magnetic field application and under the premise of accurately distinguishing a sample similar to the transverse relaxation time of PDMS (Plasma Desorption Mass Spectrometry), and can be widely applied to the field of nuclear magnetic resonance detection of micro-fluids.
Description
Technical field
The present invention relates to a kind of gallium solenoid miniature coils, particularly gallium solenoid miniature coils of a kind of circular cross section based on kapillary and adhered by double sided plaster and preparation method thereof.
Background technology
Since (Resonance Absorption by Nuclear Magnetic Moments in a Solid. Physical Review such as Purcell, 1946. 69 (1-2): p. 37.) with (The Nuclear Induction Experiment. Physical Review such as absorption process and Bloch, 1946. 70 (7-8): p. 474.) independently find separately nuclear magnetic resonance (nuclear magnetic resonance by inductive method, NMR), since phenomenon, just continued to bring out about the research of NMR technology.NMR technology has two obvious features: one, possesses the advantage of Non-Destructive Testing; Its two, there is the inferior position that detection sensitivity is low.In order to make up inferior position, part scholar puts into superconducting magnet research direction, among the technology such as cryogenic probe and polarization transfer, another part scholar turns to research notice among miniature coils development, wherein, (the Design and analysis of microcoils for NMR microscopy. Journal of Magnetic Resonance Series B such as Peck, 1995. 108 (2): p. 114-124.) be wound around by craft the solenoid miniature coils of making circular cross section, research show that the diameter that dwindles coil can improve detection sensitivity, but the method for making by hand is unfavorable for miniature coils batch production, also be not easy to accurately make the miniature coils of specifying geometric parameter.Be different from manual winding method and make miniature coils, (the Using microcontact printing to fabricate microcoils on capillaries for high resolution proton nuclear magnetic resonance on nanoliter volumes. Applied Physics Letters such as Rogers, 1997. 70 (18): p. 2464-2466.) on glass capillary, adopt micro-contact printing technology and electroplating technology to generate solenoid miniature coils, although method for making is slightly better than making by hand, but manufacture craft difficulty is large.(the Microfabricated solenoids and Helmholtz coils for NMR spectroscopy of mammalian cells. Lab on a Chip such as Ehrmann, 2007. 7 (3): p. 373-380.) based on MEMS (micro electro mechanical system) (micro electro mechanical system, MEMS) technology, adopt photoetching and electroplating technology, produce MEMS solenoid miniature coils, but in making work, also exist technology difficulty large, be difficult for making the problems such as reproduction.Meanwhile, Sillerud etc. (
1h NMR Detection of superparamagnetic nanoparticles at 1 T using a microcoil and novel tuning circuit. Journal of Magnetic Resonance, 2006. 181 (2): p. 181-190.) adopt focused ion beam (focused ion beam, FIB) technology, on the quartz ampoule of internal diameter 400 μ m, external diameter 550 μ m, make solenoid miniature coils, but FIB cost of manufacture is too high.Although (the Sub-nanoliter nuclear magnetic resonance coils fabricated with multilayer soft lithography. Journal of Micromechanics and Microengineering such as Lam, 2009. 19 (9). 095001 (6pp)) improvement coil manufacturing method, process complexity and cost of manufacture are reduced, but around around dimethyl silicone polymer (polydimethylsiloxane, PDMS) gallium solenoid miniature coils is difficult to accurately tell the sample close with PDMS T2.In addition, although Chinese Patent Application No. is 201310659209.4 based on printed circuit board (PCB) (printed circuit board, PCB) the solenoid miniature coils of technology has also reduced process complexity and cost of manufacture, but because the impact of FR4 substrate has limited the application of coil on High-Field.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster, another object of the present invention is to provide the method for making of the gallium solenoid miniature coils of this circular cross section based on kapillary and adhered by double sided plaster.The method for making of the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster provided by the invention, can, not sacrificing High-Field application or can accurately differentiating under the prerequisite with the close sample of PDMS T2, effectively solve the problems such as existing solenoid miniature coils process complexity is high, cost of manufacture is high.
Technical scheme: for achieving the above object, technical scheme of the present invention is:
A kind of gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster, this coil comprises three-decker, from inner endocapillary layer, double faced adhesive tape middle level and the double faced adhesive tape skin of being outwards followed successively by, be provided with sample cavity at endocapillary layer, be provided with solenoid miniature coils die cavity in double faced adhesive tape middle level, be provided with the first pad die cavity and the second pad die cavity at double faced adhesive tape skin.
As preferred version, the outer three of described endocapillary layer, double faced adhesive tape middle level and double faced adhesive tape is coaxial and be the right cylinder of hollow, in addition, in the time of assembly, the outside surface of endocapillary layer is pasting the inside surface in double faced adhesive tape middle level, and the outside surface in double faced adhesive tape middle level is pasting the outer field inside surface of double faced adhesive tape.
As preferred version, the left end of described solenoid miniature coils die cavity, right-hand member are corresponding to be respectively connected with the first pad die cavity, the second pad die cavity, and the other parts of solenoid miniature coils die cavity are covered by the outer parcel of double faced adhesive tape completely.
As preferred version, the material of described endocapillary layer is glass, can avoid PCB solenoid miniature coils can not be applied to the limitation of High-Field.
As preferred version, described double faced adhesive tape middle level and the outer field material of double faced adhesive tape be based on polyethylene terephthalate or based on nonwoven fabrics and two sides be stained with the adhesive tape of glue, can avoid around can not accurately differentiating and the limitation of the close sample of PDMS T2 around the gallium solenoid miniature coils of PDMS.
As preferred version, described solenoid miniature coils die cavity, the first pad die cavity and the equal filling liquid gallium of the second pad die cavity.
As preferred version, described solenoid miniature coils die cavity all rides on the outside surface of endocapillary layer.
As preferred version, the thickness in described double faced adhesive tape middle level is determined according to the degree of depth of solenoid miniature coils die cavity.
As preferred version, the outer field thickness of described double faced adhesive tape is determined according to the degree of depth of the first pad die cavity or the second pad die cavity.
As preferred version, the sample cavity of described endocapillary layer is mainly used in placing tested liquid sample, and part is for placing the solid sample that is less than capillary inner diameter size.
The method for making of the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster of the present invention, it comprises the following steps:
First select the kapillary of specified size, and inside surface and outside surface to endocapillary layer carry out cleaning, then endocapillary layer is mounted on universal stage and fixing;
Then, adhered by double sided plaster is wrapped up to endocapillary layer outside surface, form double faced adhesive tape middle level, then the double faced adhesive tape middle level of bonding endocapillary layer is moved in laser cutting machine, then laser beam is aimed at and irradiated the vertical plane that comprises axis, double faced adhesive tape middle level;
Then, the universal stage of uniform rotation on one side, at the uniform velocity mobile laser beam from left to right or from right to left on one side, form after solenoid miniature coils die cavity, the platform that simultaneously stops the rotation rotates and laser beam irradiation, wherein, the translational speed of the velocity of rotation of universal stage, laser beam, laser beam irradiation time, laser power and gas pressure environment parameter are determined according to the material in solenoid miniature coils die cavity live width, the degree of depth, the number of turn, turn-to-turn spacing, diameter and double faced adhesive tape middle level;
Then, demarcate solenoid miniature coils die cavity left and right end position, the double faced adhesive tape middle level of bonding endocapillary layer is shifted out from laser cutting machine, then adhered by double sided plaster is wrapped up to double faced adhesive tape middle level outside surface, sealing solenoid miniature coils die cavity, and form double faced adhesive tape skin;
Then, the double faced adhesive tape skin in bonding double faced adhesive tape middle level is moved in laser cutting machine, and left end and the right-hand member of the solenoid miniature coils die cavity that laser beam irradiation has been demarcated, form respectively the first pad die cavity and the second pad die cavity, wherein, the translational speed of laser beam, laser beam irradiation time, laser power and gas pressure environment parameter are determined according to the length and width of the first pad die cavity and the second pad die cavity, the dark and outer field material of double faced adhesive tape respectively;
Finally, be more than or equal under the temperature environment of gallium fusing point, to the advanced row liquid metal of the first pad die cavity, solenoid miniature coils die cavity and the second pad die cavity gallium, casting is processed, under the temperature environment lower than gallium fusing point, carry out again cooling processing, make the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster.
Beneficial effect: compared to the prior art gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster provided by the invention and preparation method thereof, has the following advantages:
On the one hand, the solenoid miniature coils of existing manual winding method, micro-contact printing technology, MEMS technology and FIB fabrication techniques exists that technology difficulty is large, high in cost of production is not enough; On the other hand, existing gallium solenoid miniature coils and PCB solenoid miniature coils, although technique is simple and cost is low, corresponding existence is sacrificed to detect and is differentiated accuracy and limit the limitations such as High-Field application separately;
The present invention is according to the deficiencies in the prior art, gallium solenoid miniature coils of a kind of circular cross section based on kapillary and adhered by double sided plaster providing and preparation method thereof, the method can not sacrificed High-Field application or can accurately differentiate under the prerequisite with the close sample of PDMS T2, can effectively solve the problems such as existing solenoid miniature coils process complexity is high, cost of manufacture is high, can prepare gallium solenoid miniature coils and can be applicable in NMR High-Field, can tell the sample close with PDMS T2.
Brief description of the drawings
Fig. 1 is the schematic diagram of the gallium solenoid miniature coils three-decker of the circular cross section based on kapillary and adhered by double sided plaster of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Embodiment 1
As shown in Figure 1, a kind of gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster, this miniature coils comprises three-decker, from inner endocapillary layer (10), double faced adhesive tape middle level (20) and the double faced adhesive tape skin (30) of being outwards followed successively by, on endocapillary layer (10), offer sample cavity (11), on double faced adhesive tape middle level (20), offer solenoid miniature coils die cavity (21), on double faced adhesive tape skin (30), offer the first pad die cavity (31) and the second pad die cavity (32).
Above-described endocapillary layer (10), double faced adhesive tape middle level (20) and double faced adhesive tape skin (30) three are coaxial and be the right cylinder of hollow, and in the time of assembly, the outside surface of endocapillary layer (10) is pasting the inside surface of double faced adhesive tape middle level (20), and the outside surface of double faced adhesive tape middle level (20) is pasting the inside surface of double faced adhesive tape skin (30).
The left and right end of above-described solenoid miniature coils die cavity (21) is connected respectively the first pad die cavity (31) and the second pad die cavity (32), and the remaining other parts of solenoid miniature coils die cavity (21) are covered by double faced adhesive tape skin (30) parcel.
The material of above-described endocapillary layer (10) is glass, the material of double faced adhesive tape middle level (20) and double faced adhesive tape skin (30) be based on polyethylene terephthalate or based on nonwoven fabrics and two sides be stained with the adhesive tape of glue, solenoid miniature coils die cavity (21), the first pad die cavity (31) and the second pad die cavity (32) packing material are liquid metal gallium.
Above-described solenoid miniature coils die cavity (21) all rides on the outside surface of endocapillary layer (10).
The thickness in above-described double faced adhesive tape middle level (20) is determined according to the degree of depth of solenoid miniature coils die cavity (21).
The thickness of above-described double faced adhesive tape skin (30) is determined according to the degree of depth of the first pad die cavity (31) or the second pad die cavity (32).
The sample cavity (11) of above-described endocapillary layer (10) is mainly used in placing tested liquid sample, and part is for placing the solid sample that is less than capillary inner diameter size.
Embodiment 2
A manufacture method for the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster, it comprises the following steps:
First select the kapillary of specified size, and the surfaces externally and internally of endocapillary layer (10) is carried out to cleaning, then endocapillary layer is mounted on universal stage and is fixed;
Then, adhered by double sided plaster is wrapped up to endocapillary layer (10) outside surface, form double faced adhesive tape middle level (20), then move in laser cutting machine, then laser beam is aimed at and irradiated the vertical plane that comprises axis, double faced adhesive tape middle level (20);
Then, the universal stage of uniform rotation on one side, at the uniform velocity mobile laser beam from left to right or from right to left on one side, form after solenoid miniature coils die cavity (21), the platform that simultaneously stops the rotation rotates and laser beam irradiation, wherein, the translational speed of the velocity of rotation of universal stage, laser beam, laser beam irradiation time, laser power and gas pressure environment parameter are according to the material of solenoid miniature coils die cavity (21) live width, the degree of depth, the number of turn, turn-to-turn spacing, diameter and double faced adhesive tape middle level (20) and determine;
Then, demarcate the position at solenoid miniature coils die cavity (21) two ends, the double faced adhesive tape middle level (20) of bonding endocapillary layer (10) is shifted out from laser cutting machine, again adhered by double sided plaster is wrapped up to double faced adhesive tape middle level (20) outside surface, sealing solenoid miniature coils die cavity (21), moves in laser cutting machine after formation double faced adhesive tape skin (30);
Then, the left and right end of the solenoid miniature coils die cavity (21) that laser beam irradiation has been demarcated, corresponding the first pad die cavity (31) and the second pad die cavity (32) of forming respectively, wherein, the translational speed of laser beam, laser beam irradiation time, laser power and gas pressure environment parameter respectively according to the length and width of the first pad die cavity (31) and the second pad die cavity (32), deeply and the material of double faced adhesive tape outer (30) and determining;
Finally, be more than or equal under the temperature environment of gallium fusing point, the first pad die cavity (31), solenoid miniature coils die cavity (21) and the second pad die cavity (32) are first carried out to the casting of liquid metal gallium to be processed, under the temperature environment lower than gallium fusing point, carry out again cooling processing, make the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster.
Embodiment 3
When the actual microfluid magnetic resonance detection of gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster is applied, first, insert respectively inlet/outlet pipe at sample cavity (11) two ends, left and right, then, in the sealing of joint, two ends, then liquid sample is injected to sample cavity (11);
Then, signal conductor in resonance matching circuit and ground wire are inserted respectively containing in uncooled the first pad die cavity (31) of liquid metal gallium and the second pad die cavity (32), after liquid metal gallium is cooling, be connected in network analyzer by nonmagnetic coaxial wire, and regulate nonmagnetic variable tuning electric capacity and nonmagnetic variable matching capacitance with nonmagnetic flat mouth screwdriver, by gallium solenoid miniature coils resonance matching to 50 Ω of the circular cross section based on kapillary and adhered by double sided plaster;
Then, resonance matching circuit, together with shifting out from network analyzer based on kapillary and the gallium solenoid miniature coils of the circular cross section of adhered by double sided plaster, and is moved into the control section connecting in NMR system together;
Then, the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster is fixed on to the most uniform center of magnets magnetic fields, and by sample cavity (11) horizontal positioned containing liquid sample;
Finally, containing on the computing machine of function software, running parameter is being set, transmitting rf excitation signal also receives the induced signal after nuclear magnetic resonance effect, just obtains nuclear magnetic resonance time-domain signal or nuclear magnetic resonance frequency-region signal intuitively by computing machine after processing.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster, it is characterized in that: this miniature coils comprises three-decker, from inner endocapillary layer (10), double faced adhesive tape middle level (20) and the double faced adhesive tape skin (30) of being outwards followed successively by, on endocapillary layer (10), offer sample cavity (11), on double faced adhesive tape middle level (20), offer solenoid miniature coils die cavity (21), on double faced adhesive tape skin (30), offer the first pad die cavity (31) and the second pad die cavity (32).
2. the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster according to claim 1, it is characterized in that: endocapillary layer (10), double faced adhesive tape middle level (20) and double faced adhesive tape skin (30) three are coaxial and be the right cylinder of hollow, the outside surface of endocapillary layer (10) is pasting the inside surface of double faced adhesive tape middle level (20), and the outside surface of double faced adhesive tape middle level (20) is pasting the inside surface of double faced adhesive tape skin (30).
3. the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster according to claim 1, it is characterized in that: the first pad die cavity (31) is connected with the left end of solenoid miniature coils die cavity (21), the second pad die cavity (32) is connected with the right-hand member of solenoid miniature coils die cavity (21).
4. the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster according to claim 1, it is characterized in that: the material of endocapillary layer (10) is glass, the material of double faced adhesive tape middle level (20) and double faced adhesive tape skin (30) be based on polyethylene terephthalate or based on nonwoven fabrics and two sides be stained with the adhesive tape of glue.
5. the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster according to claim 1, is characterized in that: in solenoid miniature coils die cavity (21), the first pad die cavity (31) and the second pad die cavity (32), be all filled with liquid metal gallium.
6. the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster according to claim 1, it is characterized in that: the two ends of solenoid miniature coils die cavity (21) are connected with the second pad die cavity (32) by the first pad die cavity (31) respectively, the other parts of solenoid miniature coils die cavity (21) are covered by double faced adhesive tape skin (30) parcel.
7. the preparation method of the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster described in claim 1 to 6 any one, is characterized in that, comprises the following steps:
A, first the surfaces externally and internally of endocapillary layer (10) is carried out to cleaning, then by endocapillary layer (10) be arranged on universal stage, fixing;
B, adhered by double sided plaster is wrapped up to endocapillary layer (10) outside surface, form double faced adhesive tape middle level (20), again the double faced adhesive tape middle level (20) of bonding endocapillary layer (10) is moved in laser cutting machine, laser beam is aimed at and irradiated the vertical plane that comprises axis, double faced adhesive tape middle level (20); Uniform rotation universal stage on one side, at the uniform velocity mobile laser beam from left to right or from right to left on one side, forms after solenoid miniature coils die cavity (21), and the platform that simultaneously stops the rotation rotates and stops laser beam irradiation;
The position at c, demarcation solenoid miniature coils die cavity (21) two ends, the double faced adhesive tape middle level (20) of bonding endocapillary layer (10) is shifted out from laser cutting machine, again adhered by double sided plaster is wrapped up to double faced adhesive tape middle level (20) outside surface, sealing solenoid miniature coils die cavity (21), and form double faced adhesive tape skin (30);
D, then move in laser cutting machine, the left end of the solenoid miniature coils die cavity (21) that laser beam irradiation has been demarcated, form the first pad die cavity (31), the right-hand member of the solenoid miniature coils die cavity (21) that laser beam irradiation has been demarcated, forms the second pad die cavity (32);
E, be more than or equal under the temperature environment of gallium fusing point, the first pad die cavity (31), solenoid miniature coils die cavity (21) and the second pad die cavity (32) are first carried out to the casting of liquid metal gallium to be processed, under the temperature environment lower than gallium fusing point, carry out again cooling processing, make the gallium solenoid miniature coils of the circular cross section based on kapillary and adhered by double sided plaster.
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CN108838546A (en) * | 2018-07-24 | 2018-11-20 | 长春理工大学 | Thin micro tube inner surface micro-structure laser processing |
CN111610216A (en) * | 2019-12-26 | 2020-09-01 | 苏州纽迈分析仪器股份有限公司 | Freezing and thawing environment moisture migration testing equipment |
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Application publication date: 20141210 |