CN113959604B - Sensitivity-adjustable touch flexible sensor and manufacturing method thereof - Google Patents
Sensitivity-adjustable touch flexible sensor and manufacturing method thereof Download PDFInfo
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- CN113959604B CN113959604B CN202111220427.9A CN202111220427A CN113959604B CN 113959604 B CN113959604 B CN 113959604B CN 202111220427 A CN202111220427 A CN 202111220427A CN 113959604 B CN113959604 B CN 113959604B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 230000035945 sensitivity Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000013013 elastic material Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 9
- 238000001291 vacuum drying Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims description 15
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 239000007772 electrode material Substances 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- JUWSSMXCCAMYGX-UHFFFAOYSA-N gold platinum Chemical compound [Pt].[Au] JUWSSMXCCAMYGX-UHFFFAOYSA-N 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 abstract description 5
- 230000001788 irregular Effects 0.000 abstract description 5
- 239000002071 nanotube Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000001694 spray drying Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HXVNBWAKAOHACI-UHFFFAOYSA-N 2,4-dimethyl-3-pentanone Chemical compound CC(C)C(=O)C(C)C HXVNBWAKAOHACI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
Abstract
The application discloses a touch flexible sensor with adjustable sensitivity, which adopts extensible flexible materials and a preparation method of spraying, so that the touch flexible sensor has excellent stretchability and sensitivity; the carbon nano tube network lattice structure with nano penetrating micropore characteristics can be formed by adopting a spray and vacuum drying film forming method, and the change of the nano tube network lattice structure can be caused by weak contact, so that the sensor has high sensitivity; the adding proportion of the mixed elastic materials AUD and tBA is adjustable, and the mechanical characteristics and the sensitivity of the sensor can be controlled by adjusting the material proportion; the rotating shaft can be replaced by an object with any geometric shape, so that in-situ manufacturing of flexible sensing units on the surfaces of various irregular objects can be realized.
Description
Technical Field
The application relates to the field of polymer composite materials, in particular to a sensitivity-adjustable touch flexible sensor and a manufacturing method thereof.
Background
In recent decades, the research enthusiasm of flexible sensors is increasing, and the flexible sensors are used as substitutes of traditional electronic devices, and have the advantages of stronger flexibility, stretchability and light weight.
However, the existing flexible electronic device manufacturing technologies are mainly suspension coating, injection molding, 3D printing, and the like, the manufacturing process is complex, and high structural precision and high sensitivity cannot be achieved. In addition, the above-mentioned manufacturing processes such as suspension coating, injection molding and 3D printing are difficult to realize in-situ manufacturing on the surface of the original object, and affect the adhesion stability and mechanical robustness of the flexible sensor and the contact object.
Disclosure of Invention
Aiming at the technical problems, the application provides the flexible sensor with adjustable sensitivity and the manufacturing method thereof, the manufacturing method of the flexible sensor is efficient, the obtained flexible sensor has excellent stretchability and sensitivity, the sensing characteristics of the sensor can be regulated and controlled by adjusting the material proportion, and in-situ manufacturing of flexible sensing units on the surfaces of various irregular objects can be realized.
In order to achieve the above object, the present application provides the following technical solutions:
the application firstly provides a manufacturing method of a touch flexible sensor with adjustable sensitivity, which comprises the following steps:
s1, pouring an AUD elastic matrix material and a tBA thinner material which are uniformly mixed into a microporous spray valve, wherein the added mass ratio of the thinner tBA is 10% -50%, uniformly spraying the thinner tBA onto a rotating shaft, and simultaneously irradiating the rotating shaft by an ultraviolet lamp to solidify a film, wherein the steps are repeated for a plurality of times, and the total thickness is 30-100 mu m;
s2, pouring conductive ink into the microporous spray valve, and spraying the conductive ink on the elastic material after film formation, wherein the step is repeated for a plurality of times, and the total thickness is 10-50 mu m; the conductive ink is prepared by uniformly mixing conductive particles and an organic solvent, wherein the addition mass ratio of the conductive particles is 10% -50%;
s3, stripping the sprayed multilayer material from the rotating shaft, embedding the multilayer material into an electrode material, and putting the multilayer material into a vacuum drying box to volatilize an organic solvent;
s4, packaging the conductive ink and the electrode material by adopting a prefabricated AUD and tBA mixed elastic material film, wherein the thickness of the film is 30-100 mu m, and curing and packaging the mixed material by adopting 2wt% of photo-initiator TPO to obtain the sensitivity-adjustable touch flexible sensor.
Further, the rheological property of the conductive ink is 1-200cP, the upper limit of the resistance value after drying is 100KΩ, and the conductive ink is prepared by uniformly mixing an organic solvent and conductive particles.
Further, the conductive particles are one of carbon nanotubes, graphene and nano silver wires.
Further, one of dichloromethane, isopropyl alcohol and acetone is used as an organic solvent.
Further, the mixing mode is one or more of ultrasonic stirring, ultrasonic vibration, ultrasonic probe dispersion and ball milling.
Further, the pressure of the nozzle 25G of the microporous spray valve is 0.15-0.25Mp, the distance is 100mm, the movement freedom degree is the movement freedom degree along the long axis direction of the rotating shaft and the radial direction of the rotating shaft, and the movement speed is adjustable.
Further, the wavelength of the ultraviolet lamp is 250-400nm, and the dosage is 30-70uW/cm 2 。
Further, the vacuum drying time is 50-150 minutes, the vacuum degree is-10 kp, and the temperature is 50-65 ℃.
Further, the electrode material is one of silver wire, copper wire and platinum gold wire.
The application also provides a touch flexible sensor with adjustable sensitivity, which is prepared according to the manufacturing method.
Compared with the prior art, the application has the beneficial effects that:
according to the sensitivity-adjustable touch flexible sensor provided by the application, the extensible flexible material and the preparation method of spraying are adopted, so that the flexible touch sensor has excellent stretchability and sensitivity; the carbon nano tube network lattice structure with nano penetrating micropore characteristics can be formed by adopting a spray and vacuum drying film forming method, and the change of the nano tube network lattice structure can be caused by weak contact, so that the sensor has high sensitivity; the adding proportion of the mixed elastic materials AUD and tBA is adjustable, and the mechanical characteristics and the sensitivity of the sensor can be controlled by adjusting the material proportion; the rotating shaft can be replaced by an object with any geometric shape, so that in-situ manufacturing of flexible sensing units on the surfaces of various irregular objects can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the flexible sensor device of embodiment 1 of the present application.
Fig. 2 is a schematic structural diagram of a multi-layer flexible sensor unit according to embodiment 1 of the present application after being peeled from a rotating shaft.
FIG. 3 is a schematic diagram of the process of manufacturing the embedded electrode of the multilayer flexible sensor unit after peeling in embodiment 1 of the present application.
Fig. 4 is a schematic structural diagram of a flexible sensor device after encapsulation according to embodiment 1 of the present application.
Fig. 5 is a tensile and ink extensibility display of example 1 of the present application.
Fig. 6 is a scanning electron microscope image of a network structure of nano-penetrating microporous carbon nanotubes according to example 1 of the present application.
FIG. 7 is the effect of tBA content of example 1 of the present application on its mechanical properties and sensor sensitivity.
Detailed Description
The application firstly provides a touch flexible sensor with adjustable sensitivity, which is manufactured by adopting the following materials:
conductive ink, elastic matrix material, diluent tBA and photoinitiator TPO.
The conductive ink is prepared by uniformly mixing an organic solvent and conductive particles, wherein the addition mass ratio of the conductive particles is 10% -50%, namely the mass ratio of the conductive particles to the organic solvent is 1:9-1:1. The conductive particles can be carbon nanotubes, graphene, nano silver wires and the like, the organic solvent comprises dichloromethane, isopropyl ketone, acetone and the like, and the mixing mode adopted is ultrasonic stirring, ultrasonic vibration, ultrasonic probe dispersion, ball milling and the like. The rheological property of the mixed conductive ink is 1-200cP, and the upper limit of the resistance value after drying is 100KΩ. Too low an ink viscosity may result in failure to adhere to the surface of the shaft, and too high a viscosity may result in failure to successfully eject ink.
The elastic substrate AUD (Ebecryl 8413) is used as a dielectric film or packaging film material, and a thinner tBA is used for adjusting the stretchability of the film material. the tBA addition ratio is 10% -50%. I.e. the mass ratio of tBA to AUD is 1:9 to 1:1.
The mixed material is cured by using a photo initiator TPO. The amount of the photo initiator TPO added was 2wt%.
The application also provides a manufacturing method of the touch flexible sensor with adjustable sensitivity, which comprises the following steps:
s1, pouring the AUD elastic matrix material and the tBA thinner material which are uniformly mixed into a microporous spray valve, uniformly spraying the AUD elastic matrix material and the tBA thinner material onto a rotating shaft, as shown in figure 1, and simultaneously irradiating the rotating shaft by an ultraviolet lamp to solidify the film, wherein the steps are repeated for a plurality of times, and the total thickness is 30-100 mu m;
the rotating shaft can be replaced by any irregular object, comprises a flexible mechanical arm, an arm and the like, and has the freedom degree of rotation around the axial direction, and the rotating speed and the steering direction of the rotating shaft are adjustable; the pressure of the microporous spray valve spray head 25G is 0.15-0.25Mp, the distance is 100mm, the movement freedom degree is the movement freedom degree along the long axis direction of the rotating shaft and the radial direction of the rotating shaft, and the movement speed is adjustable; the wavelength range of the curing ultraviolet lamp is 250-400nm, and the dosage is 30-70uW/cm 2 A parameter outside this range will be difficult to cure or overconstrain;
s2, pouring conductive ink into the microporous spray valve, and spraying the conductive ink on the elastic material after film formation, wherein the step is repeated for a plurality of times, and the total thickness is 10-50 mu m;
s3, stripping the sprayed multilayer material from the rotating shaft, embedding the multilayer material into an electrode material, and putting the multilayer material into a vacuum drying box to volatilize an organic solvent; the structure of the multi-layer flexible sensing unit after being stripped from the rotating shaft is shown in figure 2, and the manufacturing process of the embedded electrode of the multi-layer flexible sensing unit after being stripped is shown in figure 3;
the air drying time is 50-150 minutes according to the different time of the material characteristic, the solvent content and the volatilization characteristic, the vacuum degree is-10 kp, the temperature is 50-65 ℃, the air drying time cannot be completely volatilized beyond the parameter range, the sensing characteristic of the sensor is affected, and the sprayed pattern can be preset according to the requirement;
by adopting a spray and vacuum drying film forming method, a carbon nano tube grid structure with nano penetrating micropore characteristics can be formed, as shown in fig. 6, the change of the nano tube grid structure can be caused by weak contact, so that the sensor has high sensitivity;
s4, packaging the conductive ink and the electrode material by adopting a prefabricated AUD and tBA mixed elastic material film, wherein the thickness of the film is 30-100 mu m, and curing and packaging are finished to obtain the touch flexible sensor with adjustable sensitivity, wherein the structure of the flexible sensor after packaging is shown in figure 4.
The electrode material can be silver wire, copper wire, platinum gold wire, etc., and the original shape of the ink cannot be damaged in the thin film packaging process.
In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be described in further detail with reference to the accompanying drawings and examples.
Example 1 fabrication of an Adjustable sensitivity tactile Flexible sensor
First, the conductive particle carbon nano tube and organic solvent methylene dichloride are mixed according to the following ratio of 1:9, mixing the materials according to the mass ratio, and uniformly dispersing the materials for 3 hours in a dispersing mode of an ultrasonic probe to obtain the conductive ink. The AUD matrix material (Ebecryl 8413) and tBA diluent were used in a 1:1 ratio with a photoinitiator TPO of 5% to give a viscosity of less than 200cP after mixing to facilitate spray out.
And 2a, pouring the mixed elastic material into a microporous spray valve with the nozzle diameter of 0.3mm, rotating a rotating shaft according to a designated speed and direction under the drive of a program, and uniformly spraying the spray valve according to a pre-programmed path, wherein the pressure of the microporous spray valve nozzle 25G is 0.15Mp, and the distance is 100mm. After the spraying is finished, the wavelength is 365nm, and the dosage is 30uW/cm 2 The ultraviolet irradiation head of (2) solidifies the sprayed thin layer, the step can be repeated for a plurality of times, so that the total thickness is 50 mu m;
3a, pouring conductive ink obtained by uniformly mixing a carbon nano tube and an organic solvent methylene dichloride into a microporous spray valve with a spray head model of 25G, so that the conductive ink is sprayed on the elastic material after film formation according to a pre-programmed path, and repeating the steps for a plurality of times, wherein the total thickness is 30 mu m;
stripping the sprayed multilayer material from the rotating shaft, embedding silver electrodes in the appointed conductive ink jet area, and placing the embedded silver electrodes in a vacuum drying oven to volatilize the organic solvent;
and 5a, packaging the conductive ink and the electrode material by adopting a prefabricated AUD and tBA mixed elastic material film, wherein the thickness of the film is 50 mu m, and curing and packaging are completed to obtain the sensitivity-adjustable touch flexible sensor.
The adjustable sensitivity tactile flexible sensor prepared in 5a was wired out to an LCR impedance test analyzer.
Stretching the flexible sensing device from multiple directions in a plane, and testing resistance changes of the flexible sensing device when stretching in different directions as shown in fig. 5; the change in capacitance between the upper and lower planes was tested by applying pressure from a direction perpendicular to the planes.
The addition proportion of the mixed elastic materials AUD and tBA is adjustable, and the result is shown in figure 7, and the mechanical characteristics and the sensitivity of the sensor can be controlled by adjusting the material proportion; the rotating shaft can be replaced by an object with any geometric shape, so that in-situ manufacturing of flexible sensing units on the surfaces of various irregular objects can be realized.
Examples 2 to 7 were similar to the preparation method of example 1, with the differences shown in table 1.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method for manufacturing a touch flexible sensor with adjustable sensitivity, which is characterized by comprising the following steps:
s1, pouring an AUD elastic matrix material and a tBA thinner material which are uniformly mixed into a microporous spray valve, wherein the added mass ratio of the thinner tBA is 10% -50%, uniformly spraying the thinner tBA onto a rotating shaft, and simultaneously irradiating the rotating shaft by an ultraviolet lamp to solidify a film, wherein the steps are repeated for a plurality of times, and the total thickness is 30-100 mu m;
s2, pouring conductive ink into the microporous spray valve, and spraying the conductive ink on the elastic material after film formation, wherein the step is repeated for a plurality of times, and the total thickness is 10-50 mu m; the conductive ink is prepared by uniformly mixing conductive particles and an organic solvent, wherein the addition mass ratio of the conductive particles is 10% -50%;
s3, stripping the sprayed multilayer material from the rotating shaft, embedding the multilayer material into an electrode material, and putting the multilayer material into a vacuum drying box to volatilize an organic solvent;
s4, packaging the conductive ink and the electrode material by adopting a prefabricated AUD and tBA mixed elastic material film, wherein the thickness of the film is 30-100 mu m, and curing and packaging the mixed material by adopting 2wt% of photo-initiator TPO to obtain the sensitivity-adjustable touch flexible sensor.
2. The method for manufacturing the touch flexible sensor with adjustable sensitivity according to claim 1, wherein the rheological property of the conductive ink is 1-200cP, the upper limit of the resistance value after drying is 100KΩ, and the touch flexible sensor is manufactured by uniformly mixing an organic solvent and conductive particles.
3. The method of manufacturing a tactile flexible sensor with adjustable sensitivity according to claim 2, wherein the conductive particles are one of carbon nanotubes, graphene, and nano silver wires.
4. The method of manufacturing a tactile flexible sensor with adjustable sensitivity according to claim 2, wherein the organic solvent is one of dichloromethane, isopropyl alcohol, and acetone.
5. The method of manufacturing a tactile flexible sensor of adjustable sensitivity according to claim 2, wherein the mixing means is one or more of ultrasonic agitation, ultrasonic vibration, ultrasonic probe dispersion, ball milling.
6. The method of manufacturing a tactile flexible sensor with adjustable sensitivity according to claim 1, wherein the nozzle 25G of the microporous spray valve has a pressure of 0.15-0.25Mp, a distance of 100mm, a degree of freedom of movement in a direction along the long axis of the rotation shaft and in a direction along the radial direction of the rotation shaft, and a movement speed is adjustable.
7. The method for manufacturing a tactile flexible sensor with adjustable sensitivity according to claim 1, wherein the wavelength of the ultraviolet lamp is 250-400nm, and the dosage is 30-70uW/cm 2 。
8. The method of manufacturing a tactile flexible sensor with adjustable sensitivity according to claim 1, wherein the vacuum drying time is 50-150 minutes, the vacuum degree is-10 kp, and the temperature is 50-65 ℃.
9. The method of manufacturing a tactile sensor of adjustable sensitivity according to claim 1, wherein the electrode material is one of a silver wire, a copper wire, and a platinum gold wire.
10. A tactile flexible sensor of adjustable sensitivity, prepared according to the manufacturing method of any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111220427.9A CN113959604B (en) | 2021-10-20 | 2021-10-20 | Sensitivity-adjustable touch flexible sensor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111220427.9A CN113959604B (en) | 2021-10-20 | 2021-10-20 | Sensitivity-adjustable touch flexible sensor and manufacturing method thereof |
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| CN113959604B true CN113959604B (en) | 2023-12-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004246314A (en) * | 2002-06-06 | 2004-09-02 | Hitachi Chem Co Ltd | Surface unevenness forming method and usage thereof |
| CN1833008A (en) * | 2003-05-30 | 2006-09-13 | 3M创新有限公司 | Outdoor weatherable photopolymerizable coatings |
| KR20120069565A (en) * | 2010-12-20 | 2012-06-28 | 주식회사 동진쎄미켐 | Photocurable resin composition for printing process |
| CN103443616A (en) * | 2011-03-28 | 2013-12-11 | 3M创新有限公司 | Sensor comprising a masking layer adhesive |
| WO2020013902A2 (en) * | 2018-04-25 | 2020-01-16 | The Regents Of The University Of California | Refreshable tactile display using bistable electroactive polymer and deformable serpentine electrode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10611920B2 (en) * | 2016-07-15 | 2020-04-07 | Ricoh Company, Ltd. | Curable composition, curable ink, method for forming two-dimensional or three-dimensional images, apparatus for forming two-dimensional or three-dimensional images, cured product, structural body, and processed product |
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2021
- 2021-10-20 CN CN202111220427.9A patent/CN113959604B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004246314A (en) * | 2002-06-06 | 2004-09-02 | Hitachi Chem Co Ltd | Surface unevenness forming method and usage thereof |
| CN1833008A (en) * | 2003-05-30 | 2006-09-13 | 3M创新有限公司 | Outdoor weatherable photopolymerizable coatings |
| KR20120069565A (en) * | 2010-12-20 | 2012-06-28 | 주식회사 동진쎄미켐 | Photocurable resin composition for printing process |
| CN103443616A (en) * | 2011-03-28 | 2013-12-11 | 3M创新有限公司 | Sensor comprising a masking layer adhesive |
| WO2020013902A2 (en) * | 2018-04-25 | 2020-01-16 | The Regents Of The University Of California | Refreshable tactile display using bistable electroactive polymer and deformable serpentine electrode |
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