CN113232737A - Insect robot with super-smooth surface, processing method and application - Google Patents
Insect robot with super-smooth surface, processing method and application Download PDFInfo
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- CN113232737A CN113232737A CN202110617193.5A CN202110617193A CN113232737A CN 113232737 A CN113232737 A CN 113232737A CN 202110617193 A CN202110617193 A CN 202110617193A CN 113232737 A CN113232737 A CN 113232737A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D57/00—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track
- B62D57/02—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/198—Graphene oxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/32—Size or surface area
Abstract
The invention discloses an insect robot with an ultra-smooth surface, a processing method and application, and belongs to the technical field of insect robots, wherein the insect robot has a profiling structure and sequentially consists of a graphene oxide layer and a reduced graphene oxide layer from bottom to top, wherein the reduced graphene oxide layer is of a porous structure and is obtained by processing a graphene oxide film by laser; lubricating oil is poured on the surface of the reduced graphene oxide layer, and the lubricating oil permeates into holes of the reduced graphene oxide layer. The graphene oxide contains a large amount of oxygen-containing functional groups which are converted into CO2Escaping gases in the same form to obtain a reduced graphene oxide layer with a large amount of porous structures; due to laser processingDue to the limitation of the depth, the bottom of the graphene oxide film cannot be reduced by the laser. Then, injecting lubricating oil into the reduced graphene oxide layer with the porous structure to form an ultra-smooth surface; the insect robot with the super-smooth surface is obtained through cutting, and liquid transmission of various aspects can be achieved.
Description
Technical Field
The invention belongs to the technical field of insect robots, and particularly relates to a method for preparing a porous structure by processing a graphene oxide film by using laser to obtain a substrate for preparing a super-smooth surface, and then pouring lubricating oil on the substrate to form an insect robot with the super-smooth surface, so that the integration of the humidity response property of the insect robot and the liquid transmission property of the super-smooth surface is realized.
Background
An insect robot is an important component in the field of the current bionic robot. The insect robot has the advantages of small volume, light weight, simple structure, high walking speed and the like, but the hard insect robot adopting the traditional driving mode, such as an electric actuating mechanism and a hydraulic actuating mechanism, is coordinated with a large number of rigid connecting rods and joints, so that a mechanical system is heavy and complicated. Therefore, extensive research has been initiated to prepare soft-bodied insect robots using flexible smart responsive materials capable of changing their size and shape according to various environmental stimuli. The super-smooth surface is a short name of a liquid-infused porous surface (SLIPS), and is a bionic functional surface with low surface energy prepared by a method of injecting lubricating oil into a solid porous substrate to form a uniform molecular smooth interface, and generally has good liquid drop removal and transmission capacity. However, the ultra-smooth surface is generally based on a hard template, and at present, no method can integrate the ultra-smooth surface into a soft insect robot, and the insect robot with the ultra-smooth surface has important research significance in the fields of anti-icing, anti-fouling, liquid transportation and the like of liquid.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: an insect robot with a super-smooth surface is prepared by using a laser processing technology. When the graphene oxide film is reduced by laser, a large amount of oxygen-containing functional groups contained in the graphene oxide can be replaced by CO2Escaping gases in the same form to obtain a reduced graphene oxide layer with a large amount of porous structures; due to the limitation of the laser processing depth, the bottom of the graphene oxide film cannot be reduced by the laser, so that the graphene oxide film is not reduced by the laserObtaining a substrate having a two-layer structure composed of a reduced graphene oxide layer having a porous structure and an unreduced graphene oxide layer; then, injecting lubricating oil into the reduced graphene oxide layer with the porous structure to form an ultra-smooth surface; then, the shape of the bionic insect is formed by cutting, so that the insect robot with the super-smooth surface is obtained, and the liquid transmission of various anisotropy can be realized, and the specific principle is as follows: (1) by utilizing the difference of the response conditions of the reduced graphene oxide layer and the graphene oxide layer under the humidity condition, the reduced graphene oxide layer is used as an inert layer and has no response, and the graphene oxide layer absorbs a large amount of water molecules under the humidity condition to cause volume expansion, so that the reduced graphene oxide layer can be used as an active layer to quickly respond and deform, and the deformation of the insect robot is realized; (2) the reduced graphene oxide layer with the porous structure can effectively adsorb lubricating oil and form a stable lubricating layer, so that a stable super-smooth surface can be formed, air is further isolated by the lubricating layer, and the deformation effect of the insect robot is enhanced; (3) the liquid drop can slide on the super-smooth surface of the insect robot by utilizing the good liquid transmission function of the super-smooth surface. The different deformation states of the insect robot with or without external stimulation can be used for realizing the anisotropic transportation of liquid.
The invention is realized by the following technical scheme:
an insect robot with an ultra-smooth surface is provided with a profiling structure and sequentially comprises a graphene oxide layer 2 and a reduced graphene oxide layer 1 from bottom to top, wherein the reduced graphene oxide layer 1 is of a porous structure and is obtained by processing a graphene oxide film by laser; the surface of the reduced graphene oxide layer 1 is filled with lubricating oil 3, and the lubricating oil 3 permeates into the holes of the reduced graphene oxide layer 1.
Further, the lubricating oil 3 is 3M fluorinated lubricating oil, DuPont lubricating oil, silicone oil or edible oil.
Further, the thickness of the reduced graphene oxide layer 1 is 10-100 μm; the thickness of the graphene oxide layer 2 is 5-10 μm; the thickness of the lubricating oil 3 is 5-10 mu m.
A preparation method of an insect robot with an ultra-smooth surface comprises the following specific steps:
(1) preparation of graphene oxide film: wetting a filter membrane by using deionized water, horizontally placing the filter membrane into a sand-shaped funnel, then adding a graphene oxide solution, and performing suction filtration by using a vacuum suction filter to form a graphene oxide membrane;
(2) preparation of the porous structure: processing the graphene oxide film of the upper sheet layer by using laser to obtain a reduced graphene oxide layer, wherein the unprocessed part of the lower sheet layer is the graphene oxide layer;
(3) preparing an insect robot: and (3) injecting lubricating oil into the prepared reduced graphene oxide layer with the porous structure to prepare a super-smooth surface, and cutting to prepare the insect robot.
Further, the graphene oxide solution obtained in the step (1) is specifically synthesized by the following steps:
first, NaNO is added3Mixing the graphite powder and graphite powder according to the mass ratio of 1:1-1:4 at the ice bath condition of 0-3 ℃, and adding 90-120mL of concentrated sulfuric acid (mass concentration is 98%); then adding 7-15g of potassium permanganate, keeping the ice bath condition (0-5 ℃) and stirring for 60-110min at the rotating speed of 800-; then, heating the mixture to 35-45 ℃ and 90-100 ℃ in sequence, stirring and preserving heat at the two temperature points, injecting deionized water, wherein the heat preservation time is 1h-3h and 15-30min respectively, the injected deionized water amount is 60-100mL and 100-200mL in sequence, the water injection time is 20-40min and 5-10min respectively, and the stirring speed is kept at 800-1000 r/min; then adding 10-20mL of hydrogen peroxide (volume concentration is 30%), turning off heating, continuing stirring for 12-20min, and then settling for 18-30 h; pouring out the supernatant after the sedimentation is finished, diluting the acid product with deionized water, centrifuging for 12-18min at the rotating speed of 8000-plus-one 15000r/min, repeating for 15-20 times until the pH value of the supernatant is 7; and finally, centrifuging the product suspension at the rotating speed of 1000-1500r/min for 10-20min, and repeating for 3-5 times until no black graphite particles visible to the naked eye exist, thereby obtaining the graphene oxide solution with the concentration of 2-10 mg/mL.
Further, the vacuum pumping is utilizedWhen the graphene oxide film is prepared by filtration, the speed of adding the graphene oxide solution is 0.1-0.3mL/s, the total amount of the added graphene oxide solution is 10-30mL, the filtration time is 6-12 h, the thickness of the obtained graphene oxide film is 15-30 mu m, and the number of sheets of the multilayer graphene oxide is 1 multiplied by 103-1×104。
Furthermore, the aperture of the filter membrane is 0.1-0.3 μm.
Further, the laser in step (2) is generated by a carbon dioxide laser (continuous laser with wavelength of 9-11 μm), and the power used is (5% -20%) 40W, i.e. 2W-8W.
Further, the thickness of the reduced graphene oxide layer 1 having a porous structure in the step (2) is 10 to 100 μm, and the thickness of the unreduced graphene oxide layer 2 is 5 to 10 μm.
Further, the volume of the lubricating oil 3 used in the step (3) is 0.5mL-2mL, and the insect robot with a long strip shape is cut and prepared, wherein the width of the insect robot is 1-2cm, and the length of the insect robot is 1-3 cm.
The invention also provides an application of the insect robot with the super-smooth surface, namely the anisotropic transportation of liquid is realized by utilizing the different states of the insect robot under the condition of no external stimulus.
Compared with the prior art, the invention has the following advantages:
(1) preparing an insect robot with an ultra-smooth surface by using laser, preparing a flexible porous substrate, and realizing the integration of the ultra-smooth surface and the flexible insect robot;
(2) the good liquid transmission ability of super-smooth surface and insect robot flexible performance when receiving external stimulus combine together, can realize through the existence of control external stimulus, the anisotropic transportation of control liquid.
Drawings
FIG. 1 is a schematic structural diagram of an insect robot with a super-smooth surface according to the present invention;
FIG. 2 is a schematic flow chart of the present invention for preparing an insect robot with a super-smooth surface by using laser;
fig. 3 is an electron microscope photograph of a reduced graphene oxide layer 1 having a porous structure prepared by reducing a graphene oxide film using a laser in the process of the present invention;
FIG. 4 is an X-ray photoelectron spectroscopy (XPS) of the unreduced graphene oxide layer 2 and the reduced graphene oxide layer 1 in the process of the present invention;
wherein (a) of fig. 4 is an X-ray photoelectron spectrum of the graphene oxide layer 2, and (b) of fig. 4 is a peak-divided fit of the C1s peak of the graphene oxide layer 2 of (a) of fig. 4;
fig. 4(C) is an X-ray photoelectron energy spectrum of the reduced graphene oxide layer 1, and fig. 4(d) is a peak-divided fit graph of the C1s peak of the reduced graphene oxide layer 1 of fig. 4 (C);
FIG. 5 is a schematic view of the present invention using a laser-made insect robot with a super-smooth surface for liquid transportation;
FIG. 6 is a schematic diagram of the deformation of an insect robot with a super-smooth surface prepared by laser under a humidity condition according to the present invention;
FIG. 7 is a schematic diagram of an insect robot with a super-smooth surface prepared by laser according to the present invention applied to anisotropic liquid transfer;
in fig. 7, (a) is a dry condition, and (b) is a wet condition.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the insect robot with the ultra-smooth surface provided by this embodiment has a profiling structure, and sequentially comprises a graphene oxide layer 2 and a reduced graphene oxide layer 1 from bottom to top, where the reduced graphene oxide layer 1 is a porous structure and is obtained by processing a graphene oxide film with laser; the surface of the reduced graphene oxide layer 1 is poured with lubricating oil 3, and the lubricating oil 3 permeates into the holes of the reduced graphene oxide layer 1.
The lubricating oil 3 is 3M fluorinated lubricating oil, DuPont lubricating oil, silicone oil or edible oil.
The thickness of the reduced graphene oxide layer 1 is 10-100 μm; the thickness of the graphene oxide layer 2 is 5-10 μm; the thickness of the lubricating oil 3 is 5-10 mu m.
The reduced graphene oxide layer 1 is of a porous structure and is obtained by processing an upper sheet layer of a whole graphene oxide film containing a plurality of sheet layers by laser; the porous structure is caused by the escape of gas after the graphene oxide is reduced when the graphene oxide film is processed by laser; the graphene oxide layer 2 is a lower sheet layer part of the whole graphene oxide film which is not processed by laser; when the reduced graphene oxide layer 1 is stimulated by external humidity, the reduced graphene oxide layer 1 does not respond to the humidity; graphene oxide layer 2 responds to humidity, and can adsorb water molecule expansion rapidly to make whole bilayer structure crooked to the drive insect robot takes place to deform.
Example 2
The method for preparing the insect robot with the ultra-smooth surface by using the laser comprises the following specific steps:
(1) and preparing a graphene oxide film: wetting a filter membrane with the aperture of 0.1 mu m by using a small amount of deionized water, horizontally placing the filter membrane into a sand core funnel, slowly adding 10mL of graphene oxide solution with the concentration of 2mg/mL into the sand core funnel at the speed of 0.1mL/s, and performing suction filtration by using a vacuum suction filter to form a graphene oxide membrane with the thickness of 15 mu m;
the graphene oxide solution is synthesized by a Hummer's method, and the specific synthesis steps are as follows:
first, NaNO is added3Mixing the graphite powder and graphite powder according to the mass ratio of 1:1 at the ice bath condition of 0 ℃, and adding 90mL of concentrated sulfuric acid (mass concentration is 98%); then, 7g of potassium permanganate is added, the ice bath condition (0 ℃) is kept, and the mixture is stirred for 60min at the rotating speed of 800 r/min; then, heating the mixture to 35 ℃ and 90 ℃ in sequence, stirring and preserving heat at the two temperature points, injecting deionized water, wherein the heat preservation time is 1h and 15min respectively, the injected deionized water amount is 60mL and 100mL in sequence, the water injection time is 20min and 5min respectively, and the stirring rotating speed is kept at 800 r/min; 10mL of hydrogen peroxide (30% by volume) was added, the heating was turned off and continuedStirring for 12min, and then allowing to settle for 18 h; pouring out the supernatant after the sedimentation is finished, diluting the acidic product with deionized water, centrifuging for 12min at the rotating speed of 8000r/min, repeating for 15 times until the pH value of the supernatant is 7; finally, centrifuging the product turbid liquid at the rotating speed of 1000r/min for 10min, repeating for 3 times until no black graphite particles visible to naked eyes exist, and obtaining the graphene oxide solution with the concentration of 2 mg/mL;
(2) and preparing a porous structure: processing the graphene oxide film by using laser, wherein the adopted laser is a carbon dioxide laser (a continuous laser with the wavelength of 9 mu m), the adopted power is 5% by 40W, namely 2W, the graphene oxide film prepared in the previous step is placed on a laser processing platform, and the periphery of the graphene oxide film is fixed by using an adhesive tape, so that the upper sheet layer of the graphene oxide film containing multiple sheet layers is reduced into a reduced graphene oxide layer 1, and the lower sheet layer is still a graphene oxide layer 2;
(3) and preparing the insect robot: the reduced graphene oxide layer 1 having a porous structure prepared as described above was impregnated with a lubricating oil 3 to prepare a super-smooth surface, the lubricating oil 3 used was dupont perfluorolubricating oil 100, the volume of the lubricating oil 3 used was 0.5mL, and then the shape of an insect robot, here a long insect robot cut into a strip shape having a length of 3cm and a width of 1cm, was imparted thereto by cutting.
FIG. 2 is a schematic flow chart of the present invention for preparing an insect robot with a super-smooth surface by using laser; firstly, preparing a graphene oxide film by suction filtration, then processing by a carbon dioxide laser to obtain a reduced graphene oxide layer 1 with a large number of porous structures, and then injecting lubricating oil 3 into the reduced graphene oxide layer 1 with the porous structures to realize the integration of the ultra-smooth surface and the flexible insect robot.
Fig. 3 is an electron microscope photograph of the graphene oxide layer 1 with a porous structure prepared by laser reduction in the process of the present invention; it can be seen that the reduced graphene oxide layer 1 above the layered graphene oxide layer 2 is fluffy and has a largely porous structure.
FIG. 4 is an X-ray photoelectron spectroscopy (XPS) of the graphene oxide layer 2 and the laser-reduced graphene oxide layer 1 during the process of the present invention; wherein fig. 4(b) is a graph of fig. 4(a) showing a peak-off fit of the C1s peak of the graphene oxide layer 2, and fig. 4(d) is a graph of fig. 4(C) showing a peak-off fit of the C1s peak of the reduced graphene oxide layer 1; XPS analysis was used to explore the elemental changes contained in the functional groups before and after laser reduction of graphene oxide. The XPS spectra of the graphene oxide layer 2 and the reduced graphene oxide layer 1 showed that the oxygen content was reduced from 36.26% before reduction to 13.57% after reduction, which indicates that the laser direct writing technique was able to effectively remove oxygen contained in the graphene oxide film. The C1s spectrum can be broken down into three peaks centered at 284.6eV, 286.6eV, 288.2eV, corresponding to C-C, C-O and C ═ O, respectively. After laser reduction, the C-O intensity is reduced, and the C-C peak is obviously increased, which indicates that the oxygen-containing functional group is removed.
FIG. 5 is a schematic view of the present invention for liquid transportation by using a laser to prepare an insect robot having a super-smooth surface; due to the presence of the ultra-smooth surface, the liquid immiscible with the lubricant 3, here water, can be transported along the robot when the insect robot is tilted at a small angle, here 5.
Example 3
The laser-prepared insect robot with the ultra-smooth surface is used for carrying out liquid anisotropic transmission.
The invention also provides application of the laser-prepared insect robot with the super-smooth surface to anisotropic liquid transmission, namely the insect robot with the super-smooth surface has good liquid transmission capability and can be bent when being stimulated by the outside, and anisotropic liquid transmission is controlled by controlling the existence of the outside stimulation.
The method for carrying out liquid anisotropic transmission by using the laser-prepared insect robot with the ultra-smooth surface comprises the following specific steps:
(1) and preparing a graphene oxide film: the same as in example 1.
(2) And preparing a porous structure: the same as in example 1.
(3) And preparing the insect robot: the lubricating oil 3 was injected into the reduced graphene oxide layer 1 having a porous structure prepared as described above to prepare a super-smooth surface, the lubricating oil 3 used was dupont perfluorolubricating oil 100, the volume of the lubricating oil 3 used was 2mL, and the lubricating oil 3 was shaped into an insect robot having a saw-toothed edge by cutting, the insect robot having an entire length of 5cm and a width of 4cm, a saw tooth length of 1.5cm and a width of 0.5cm, a tip angle of 1cm and a width of 1cm, as shown in fig. 7.
FIG. 6 is a schematic diagram of the deformation of an insect robot with a super-smooth surface prepared by laser under a humidity condition according to the present invention; utilize the difference of response condition when reduced graphene oxide layer 1 and graphene oxide layer 2 receive external stimulus, reduced graphene oxide layer 1 does not have the response as the inert layer, and graphene oxide layer 2 is as the active layer, adsorbs a large amount of hydrones and leads to the volume expansion under the humidity condition to make whole quick response take place bending deformation, when humidity increases, insect robot can bend to super smooth surface one side.
FIG. 7 is a schematic diagram of an insect robot with a super-smooth surface prepared by laser according to the present invention applied to anisotropic liquid transfer; under dry condition, the liquid that drops on the insect robot can slide from the sawtooth of both sides, and under humidity condition, the insect robot responds rapidly and takes place the deformation, becomes the state of curling, and the liquid that drops on the insect robot can slide from the front end, consequently, can realize through the existence of control external stimulus, the anisotropic transportation of control liquid.
Claims (10)
1. The insect robot with the ultra-smooth surface is characterized by having a profiling structure and sequentially consisting of a graphene oxide layer (2) and a reduced graphene oxide layer (1) from bottom to top, wherein the reduced graphene oxide layer (1) is of a porous structure and is obtained by processing a graphene oxide film by laser; the surface of the reduced graphene oxide layer (1) is filled with lubricating oil (3), and the lubricating oil (3) permeates into holes of the reduced graphene oxide layer (1).
2. An insect robot with a super-smooth surface according to claim 1, characterized in that said lubricating oil (3) is 3M fluorinated lubricating oil, dupont lubricating oil, silicone oil or edible oil.
3. An insect robot with a super-smooth surface according to claim 1, characterized in that the thickness of the reduced graphene oxide layer (1) is 10-100 μm; the thickness of the graphene oxide layer (2) is 5-10 mu m; the thickness of the lubricating oil 3 is 5-10 mu m.
4. The method for preparing an insect robot with a super-smooth surface according to claim 1, comprising the following steps:
(1) preparation of graphene oxide film: wetting a filter membrane by using deionized water, horizontally placing the filter membrane into a sand-shaped funnel, then adding a graphene oxide solution, and performing suction filtration by using a vacuum suction filter to form a graphene oxide membrane;
(2) preparation of the porous structure: processing the graphene oxide film of the upper sheet layer by using laser to obtain a reduced graphene oxide layer, wherein the unprocessed part of the lower sheet layer is the graphene oxide layer;
(3) preparing an insect robot: and (3) injecting lubricating oil into the prepared reduced graphene oxide layer with the porous structure to prepare a super-smooth surface, and cutting to prepare the insect robot.
5. The method for preparing an insect robot with a super-smooth surface according to claim 4, wherein the graphene oxide solution obtained in the step (1) is prepared by the following steps:
first, NaNO is added3Mixing the graphite powder and graphite powder according to the mass ratio of 1:1-1:4 at the ice bath condition of 0-3 ℃, and adding 90-120mL of concentrated sulfuric acid; then adding 7-15g of potassium permanganate, keeping the ice bath condition at 0-5 ℃, and stirring at the rotating speed of 800-; then, heating the mixture to 35-45 ℃ and 90-100 ℃ in sequence, stirring and preserving heat in the two temperature ranges, and injecting deionized water, wherein the heat preservation time is 1h-3h and 15-30min respectively, and the injection amount of the deionized water is 60-1 in sequence00mL and 100-200mL, the water injection time is 20-40min and 5-10min respectively, and the stirring speed is kept at 800-1000 r/min; then adding 10-20mL of hydrogen peroxide with the volume concentration of 30%, turning off the heating and continuing stirring for 12-20min, and then settling for 18-30 h; pouring out the supernatant after the sedimentation is finished, diluting the acid product with deionized water, centrifuging for 12-18min at the rotating speed of 8000-plus-one 15000r/min, repeating for 15-20 times until the pH value of the supernatant is 7; and finally, centrifuging the product suspension at the rotating speed of 1000-1500r/min for 10-20min, and repeating for 3-5 times until no black graphite particles visible to the naked eye exist, thereby obtaining the graphene oxide solution with the concentration of 2-10 mg/mL.
6. The method of claim 1, wherein when the graphene oxide film is prepared by vacuum filtration, the speed of adding the graphene oxide solution is 0.1-0.3mL/s, the total amount of the added graphene oxide solution is 10-30mL, the filtration time is 6-12 h, the thickness of the obtained graphene oxide film is 15-30 μm, and the number of sheets of the multi-layer graphene oxide is 1 x 103-1×104。
7. The method for preparing an insect robot with a super-smooth surface as claimed in claim 1, wherein the pore size of the filter membrane of step (1) is 0.1-0.3 μm; the thickness of the reduced graphene oxide layer 1 with the porous structure in the step (2) is 10-100 μm, and the thickness of the unreduced graphene oxide layer 2 is 5-10 μm.
8. The method of claim 1, wherein the laser of step (2) is generated by a carbon dioxide laser with a wavelength of 9-11 μm, and the power is 2W-8W.
9. The method of claim 1, wherein the volume of the lubricant oil 3 used in the step (3) is 0.5mL to 2mL, and the insect robot is cut to have a long shape with a width of 1 to 2cm and a length of 1 to 3 cm.
10. An insect robot with ultra-smooth surface as claimed in claim 1 for use in achieving anisotropic transport of liquids.
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| CN106044755A (en) * | 2016-05-31 | 2016-10-26 | 中国人民解放军装甲兵工程学院 | Method for preparing graphene by scanning graphite suspension mixed liquor through pulse lasers |
| CN106398802A (en) * | 2016-09-07 | 2017-02-15 | 济南大学 | Rapid laser preparing method for composite with graphene loaded with spherical inorganic fullerene molybdenum disulfide |
| CN108658066A (en) * | 2018-06-15 | 2018-10-16 | 集美大学 | A kind of preparation method and composite fuel of the compound Low Sulfur Fuel Oil of graphene oxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044755A (en) * | 2016-05-31 | 2016-10-26 | 中国人民解放军装甲兵工程学院 | Method for preparing graphene by scanning graphite suspension mixed liquor through pulse lasers |
| CN106398802A (en) * | 2016-09-07 | 2017-02-15 | 济南大学 | Rapid laser preparing method for composite with graphene loaded with spherical inorganic fullerene molybdenum disulfide |
| CN108658066A (en) * | 2018-06-15 | 2018-10-16 | 集美大学 | A kind of preparation method and composite fuel of the compound Low Sulfur Fuel Oil of graphene oxide |
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