CN115084836B - Liquid metal driving injection method of micro-fluid antenna - Google Patents
Liquid metal driving injection method of micro-fluid antenna Download PDFInfo
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- CN115084836B CN115084836B CN202210787961.6A CN202210787961A CN115084836B CN 115084836 B CN115084836 B CN 115084836B CN 202210787961 A CN202210787961 A CN 202210787961A CN 115084836 B CN115084836 B CN 115084836B
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- liquid metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C9/00—Devices for emptying bottles, not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
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Abstract
The invention relates to the technical field of liquid metal antennas, in particular to a liquid metal driving injection method of a microfluidic antenna, which comprises the following steps: s1, transferring; s2, standing; s3, installing a driving component; s4, extracting: firstly, extending an end opening A of a pipe extending into a liquid storage bottle into a driving carrier liquid layer, and extracting a certain amount of driving carrier liquid to enable the driving carrier liquid to fully infiltrate the whole liquid metal filling channel; then the port A of the pipe extends into the liquid metal layer, and a certain amount of liquid metal is extracted, so that the liquid metal enters the liquid metal filling channel; then the port A of the pipe extends into the driving carrier liquid layer, and a certain amount of driving carrier liquid is extracted, so that the liquid metal fills the liquid metal filling channel; s5, balancing air pressure to finish driving the liquid metal. The invention solves the problem of oxidation of liquid metal, and has lower radio frequency loss than water containing impurities, thereby ensuring the normal and stable operation of the liquid metal antenna.
Description
Technical Field
The invention relates to the technical field of liquid metal antennas, in particular to a liquid metal driving injection method of a microfluidic antenna.
Background
Because the liquid metal has higher conductivity and fluidity, compared with the traditional antenna, the liquid metal antenna manufactured by the liquid metal does not bring great loss and nonlinearity problems, and the control of the liquid metal antenna can be realized by controlling the liquid metal flow in the cavity of the antenna.
The liquid metal is easy to oxidize, and the oxidized liquid metal has serious influence on the performance of the antenna. Chinese patent application No.: CN202110858046.7 discloses a liquid metal antenna and a control system and a method thereof, the liquid metal antenna comprises an antenna body, the antenna body comprises a substrate, a first elastic layer and a feed port, the first elastic layer is fixedly installed on the substrate, a filling cavity is arranged between the first elastic layer and the substrate, one end of the feed port is communicated with the filling cavity, a discharge structure is arranged at the lower part of the substrate, and one end of the discharge structure is communicated with the filling cavity. According to the invention, the first elastic layer is deformed in a large scale, so that the first elastic layer can be attached to the wall surface and the corner of the filling cavity, further, the liquid metal in the filling cavity can be completely discharged, the residual rate of the liquid metal is reduced, and an acidic or alkaline solution is not required to be used, so that the stable control of the antenna is realized, and the antenna can stably work. According to the application, the elastic layer is arranged in the filling cavity, and the elastic layer deforms to squeeze the liquid metal in the filling cavity, so that the liquid metal is discharged. However, in order to ensure stable operation of the liquid metal antenna, contact with air needs to be prevented before the liquid metal enters the filling chamber, and this application does not address the problem of contact with air before and during injection of the liquid metal into the filling chamber.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a liquid metal driving injection method of a micro-fluid antenna.
The aim of the invention is achieved by the following technical scheme:
a liquid metal driven injection method of a microfluidic antenna, comprising the steps of:
s1, transferring: filling liquid metal and driving carrier liquid into a transparent liquid storage bottle by using a liquid-transferring gun, wherein the density of the driving carrier liquid is smaller than that of the liquid metal, and the driving carrier liquid is non-oxygen permeable liquid and is incompatible with the liquid metal;
s2, standing: standing for a period of time until the liquid metal and the driving carrier liquid are layered;
s3, installing a driving component: connecting an input port of the microfluidic antenna with one end of a tube A, extending the other end of the tube A into a liquid storage bottle, connecting an output port of the microfluidic antenna with one end of a tube B, and connecting the other end of the tube B with a suction mechanism;
s4, extracting: firstly, extending an end opening A of a pipe extending into a liquid storage bottle into a driving carrier liquid layer, and extracting a certain amount of driving carrier liquid to enable the driving carrier liquid to fully infiltrate the whole liquid metal filling channel; then the port A of the pipe extends into the liquid metal layer, and a certain amount of liquid metal is extracted, so that the liquid metal enters the liquid metal filling channel; then the port A of the pipe extends into the driving carrier liquid layer, and a certain amount of driving carrier liquid is extracted, so that the liquid metal fills the liquid metal filling channel;
s5, balancing air pressure: when the liquid metal reaches the designated position, the bottle mouth of the liquid storage bottle is immediately plugged, and the liquid extraction is stopped, so that the air pressures at the two ends of the pipe A and the pipe B are balanced, and the driving of the liquid metal is completed.
In step S1, the driving carrier liquid is transferred into the liquid storage bottle, and then the liquid metal is transferred into the liquid storage bottle.
Further, the driving carrier liquid is mineral oil.
Further, the tube A and the tube B are PTFE tubes.
Further, the suction mechanism is a syringe.
Further, the microfluidic antenna comprises an antenna body and a microfluidic channel, an etching structure is arranged on the antenna body, the microfluidic channel comprises a supporting structure, a liquid metal filling channel is arranged at the bottom of the supporting structure, an input port communicated with one end of the liquid metal filling channel is arranged at the top of the supporting structure, an output port communicated with the other end of the liquid metal filling channel is also arranged at the top of the supporting structure, and the bottom surface of the supporting structure is adhered to the antenna body through a double-sided adhesive layer, and the liquid metal filling channel is communicated with the etching structure.
Further, the microfluidic channel is made of an optically transparent resin material.
Further, the depth of the liquid metal filling channel is 0.1-0.5mm, and the width of the liquid metal filling channel is 0.8-2.5mm.
The invention has the following advantages:
1. the invention keeps isolation with the outside air all the time in the process of storing and injecting the liquid metal into the liquid metal filling channel and after the liquid metal filling channel is injected, and completely solves the problem of unstable operation of the liquid metal antenna caused by oxidation of the liquid metal.
2. The invention adopts incompatible non-oxygen permeable liquid to seal the front end and the rear end of the liquid metal, and specifically adopts mineral oil, thereby not only solving the problem of oxidation of the liquid metal, but also having lower radio frequency loss than impurity-containing water, and being an ideal carrier liquid for antioxidation treatment.
3. The liquid metal and the mineral oil are filled into the same dry and transparent liquid storage bottle by using the liquid transferring gun, the mineral oil is transferred firstly, and then the liquid metal is transferred, so that the contact time and the contact area of the liquid metal and air can be greatly reduced, and the higher degree of fluidity of the liquid metal and the air is ensured.
4. When driving the injection, a certain amount of mineral oil is extracted so that the mineral oil fully wets the whole liquid metal filling channel, and the adhesion condition of the liquid metal in the liquid metal filling channel can be reduced to a certain extent.
Drawings
FIG. 1 is a schematic view of an assembled structure of the present invention;
FIG. 2 is a schematic perspective view of a microfluidic channel according to the present invention;
FIG. 3 is a schematic top view of a microfluidic channel according to the present invention;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the structure of FIG. 3 taken along line B-B;
FIG. 6 is a schematic cross-sectional view of FIG. 1 taken along line C-C;
FIG. 7 is a schematic diagram of a drive connection structure according to the present invention;
FIG. 8 is a schematic diagram of a drive carrier liquid filled with liquid metal filling channels according to the present invention;
FIG. 9 is a schematic illustration of the liquid metal entering the liquid metal fill channel of the present invention;
FIG. 10 is a schematic diagram of a driving carrier fluid shutoff input port according to the present invention;
in the figure: 1-antenna body, 1 a-etching structure, 2-double-sided adhesive layer, 3-microfluidic channel, 3 a-supporting structure, 3a 1-liquid metal filling channel, 3B-input port, 3 c-output port, 4-liquid storage bottle, 5-driving carrier liquid, 6-liquid metal, 7-tube A, 8-tube B and 9-pumping mechanism.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 6, a liquid metal driving injection method of a microfluidic antenna includes the following steps:
s1, transferring: filling a liquid metal 6 and a driving carrier liquid 5 into a transparent liquid storage bottle 4 by using a liquid transferring gun, wherein the density of the driving carrier liquid 5 is smaller than that of the liquid metal 6, and the driving carrier liquid 5 is an oxygen-impermeable liquid and is incompatible with the liquid metal 6; in the embodiment, the driving carrier liquid 5 adopts mineral oil, so that the problem of oxidization of the liquid metal 6 is solved, and the driving carrier liquid has lower radio frequency loss than impurity-containing water and is an ideal carrier liquid for antioxidation treatment;
s2, standing: standing for a period of time until the liquid metal 6 and the driving carrier liquid 5 are layered, wherein the density of the driving carrier liquid 5 is smaller than that of the liquid metal 6, and the liquid metal 6 automatically sinks after being added into the driving carrier liquid 5, so that layering is finally generated;
s3, installing a driving component: connecting an input port 3B of the microfluidic antenna with one end of a tube A7, extending the other end of the tube A7 into the liquid storage bottle 4, connecting an output port 3c of the microfluidic antenna with one end of a tube B8, and connecting the other end of the tube B8 with a suction mechanism 9;
s4, extracting: as shown in fig. 8, the port of the tube A7 extending into the liquid storage bottle 4 extends into the driving carrier liquid layer, and a certain amount of driving carrier liquid 5 is extracted, so that the driving carrier liquid 5 fully infiltrates the whole liquid metal filling channel 3a1, so that the driving carrier liquid fully infiltrates the whole liquid metal filling channel 3a1, and the adhesion condition of the liquid metal 6 in the liquid metal filling channel 3a1 can be reduced to a certain extent; as shown in fig. 9, the port of the pipe A7 is then extended into the liquid metal layer, and a certain amount of liquid metal 6 is extracted, so that the liquid metal 6 enters the liquid metal filling channel 3a1, and at this time, the liquid metal 6 may not fill the liquid metal filling channel 3a1, so that after the driving carrier liquid 5 is pumped in later, the liquid metal 6 fills the liquid metal filling channel 3a1; as shown in fig. 10, the port of the pipe A7 is extended into the driving carrier liquid layer, and a certain amount of driving carrier liquid 5 is extracted, so that the liquid metal 6 fills the liquid metal filling channel 3a1; of course, the local filling of the liquid metal 6 in the liquid metal filling channel 3a1 can be realized in the same manner, and only the switching time of the driving carrier liquid 5 and the liquid metal 6 needs to be controlled;
s5, balancing air pressure: when the liquid metal 6 reaches the designated position, the bottle mouth of the liquid storage bottle 4 is immediately plugged, and the liquid extraction is stopped, so that the air pressures at the two ends of the pipe A7 and the pipe B8 reach balance, and the driving of the liquid metal 6 is completed.
Further, in step S1, the driving carrier liquid 5 is transferred into the liquid storage bottle 4, and then the liquid metal 6 is transferred into the liquid storage bottle 4, so that the contact time and contact area between the liquid metal 6 and air can be greatly reduced, and the fluidity of the liquid metal 6 to a higher degree is ensured.
The pipe A7 and the pipe B8 are mutually incompatible and mutually non-reactive with the driving carrier liquid 5 and the liquid metal 6, and preferably, the pipe A7 and the pipe B8 are PTFE pipes, so that the stability is good, and the pipe A7 and the pipe B8 are mutually incompatible and mutually non-reactive with the driving carrier liquid 5 and the liquid metal 6.
Preferably, the suction mechanism 9 is a syringe, and other suction structures meeting the suction requirement can be adopted.
Further, as shown in fig. 1 to 6, the microfluidic antenna includes an antenna body 1, an etching structure 1a is disposed on the antenna body 1, and further includes a microfluidic channel 3, the microfluidic channel 3 is made by using an optically transparent resin (golart 8001, greatSimple Inc) through a 3D printing technology, the microfluidic channel 3 includes a support structure 3a, a liquid metal filling channel 3a1 is disposed at the bottom of the support structure 3a, the liquid metal filling channel 3a1 is used for providing a flow path of liquid metal and limiting a flow range thereof, the liquid metal filling channel 3a1 is a non-sealing structure, after being bonded with the antenna body 1, the liquid metal filling channel 3a contacts with the etching structure 1a on the antenna body 1, an input port 3b communicating with one end of the liquid metal filling channel 3a1 is disposed at the top of the support structure 3a, an output port 3c communicating with the other end of the liquid metal filling channel 3a1 is further disposed at the top of the support structure 3a, the input port 3b and the output port 3c are used for fixing a tube, the liquid metal is provided with an input port and an output port 3b and an output port 3c for injecting and discharging liquid metal, and the liquid metal are bonded with the outer diameter of the liquid metal filling channel 3a 1a, and the liquid metal filling channel 3b is bonded with the two-side of the PTFE layer 1a 2 on the antenna body 1.
Further, the microfluidic channel 3 is made of an optically transparent resin material, and in this embodiment, godart8001, greatSimple Inc.
Further, the depth of the liquid metal filling channel 3a1 is 0.1-0.5mm, the width is 0.8-2.5mm, more preferably, the depth is 0.3mm, the width is 2mm, and the structural precision of 3d printing can reach 0.1mm.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A liquid metal driving injection method of a micro-fluid antenna is characterized in that: the method comprises the following steps:
s1, transferring: filling liquid metal and driving carrier liquid into a transparent liquid storage bottle by using a liquid transfer gun, transferring the driving carrier liquid into the liquid storage bottle, and transferring the liquid metal into the liquid storage bottle, wherein the density of the driving carrier liquid is smaller than that of the liquid metal, and the driving carrier liquid is non-oxygen permeable liquid and is incompatible with the liquid metal;
s2, standing: standing for a period of time until the liquid metal and the driving carrier liquid are layered;
s3, installing a driving component: connecting an input port of a microfluidic antenna with one end of a pipe A, extending the other end of the pipe A into a liquid storage bottle, connecting an output port of the microfluidic antenna with one end of a pipe B, connecting the other end of the pipe B with a suction mechanism, wherein the pipe A and the pipe B are PTFE pipes;
s4, extracting: firstly, extending an end opening A of a pipe extending into a liquid storage bottle into a driving carrier liquid layer, and extracting a certain amount of driving carrier liquid to enable the driving carrier liquid to fully infiltrate the whole liquid metal filling channel; then the port A of the pipe extends into the liquid metal layer, and a certain amount of liquid metal is extracted, so that the liquid metal enters the liquid metal filling channel; then the port A of the pipe extends into the driving carrier liquid layer, and a certain amount of driving carrier liquid is extracted, so that the liquid metal fills the liquid metal filling channel;
s5, balancing air pressure: when the liquid metal reaches the designated position, the bottle mouth of the liquid storage bottle is immediately plugged, and the liquid extraction is stopped, so that the air pressures at the two ends of the pipe A and the pipe B are balanced, and the driving of the liquid metal is completed;
the micro-fluid antenna comprises an antenna body and a micro-fluid channel, wherein an etching structure is arranged on the antenna body, the micro-fluid channel comprises a supporting structure, a liquid metal filling channel is arranged at the bottom of the supporting structure, an input port communicated with one end of the liquid metal filling channel is arranged at the top of the supporting structure, an output port communicated with the other end of the liquid metal filling channel is also arranged at the top of the supporting structure, the bottom surface of the supporting structure is adhered to the antenna body through a double-sided adhesive layer, and the liquid metal filling channel is communicated with the etching structure.
2. The method of liquid metal driven injection of a microfluidic antenna of claim 1, wherein: the driving carrier liquid is mineral oil.
3. The method of liquid metal driven injection of a microfluidic antenna of claim 1, wherein: the suction mechanism is a syringe.
4. The method of liquid metal driven injection of a microfluidic antenna of claim 1, wherein: the microfluidic channel is made of an optically transparent resin material.
5. The method of liquid metal driven injection of a microfluidic antenna of claim 1, wherein: the depth of the liquid metal filling channel is 0.1-0.5mm, and the width is 0.8-2.5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210787961.6A CN115084836B (en) | 2022-07-04 | 2022-07-04 | Liquid metal driving injection method of micro-fluid antenna |
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| CN202210787961.6A CN115084836B (en) | 2022-07-04 | 2022-07-04 | Liquid metal driving injection method of micro-fluid antenna |
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| CN115084836B true CN115084836B (en) | 2023-05-26 |
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| CN110676590A (en) * | 2019-11-08 | 2020-01-10 | 哈尔滨工业大学 | Frequency-reconfigurable electrically-driven liquid metal dipole antenna |
| CN110911813A (en) * | 2019-11-15 | 2020-03-24 | 北京机械设备研究所 | Modification method of liquid metal runner, metamaterial and preparation method thereof |
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| WO2015089491A1 (en) * | 2013-12-14 | 2015-06-18 | The Regents Of The University Of California | Liquid column-based capacitive sensors |
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