WO2020085281A1 - 気泡噴出方法、気泡噴出用デバイス、および、気泡噴出装置 - Google Patents
気泡噴出方法、気泡噴出用デバイス、および、気泡噴出装置 Download PDFInfo
- Publication number
- WO2020085281A1 WO2020085281A1 PCT/JP2019/041260 JP2019041260W WO2020085281A1 WO 2020085281 A1 WO2020085281 A1 WO 2020085281A1 JP 2019041260 W JP2019041260 W JP 2019041260W WO 2020085281 A1 WO2020085281 A1 WO 2020085281A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bubble
- opening
- bubble ejection
- electrode
- chamber
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M35/00—Means for application of stress for stimulating the growth of microorganisms or the generation of fermentation or metabolic products; Means for electroporation or cell fusion
- C12M35/04—Mechanical means, e.g. sonic waves, stretching forces, pressure or shear stimuli
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M35/00—Means for application of stress for stimulating the growth of microorganisms or the generation of fermentation or metabolic products; Means for electroporation or cell fusion
- C12M35/02—Electrical or electromagnetic means, e.g. for electroporation or for cell fusion
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
- C12N15/89—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation using microinjection
- C12N15/895—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation using microinjection using biolistic methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L5/00—Gas handling apparatus
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/26—Constructional details, e.g. recesses, hinges flexible
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/06—Hydrolysis; Cell lysis; Extraction of intracellular or cell wall material
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0442—Moving fluids with specific forces or mechanical means specific forces thermal energy, e.g. vaporisation, bubble jet
Definitions
- the disclosure in the present application relates to a bubble ejection method, a bubble ejection device, and a bubble ejection device.
- local processing As a local processing technique (hereinafter, sometimes referred to as “local ablation”), a method using a contact processing technique using a probe such as an electric knife or a non-contact ablation technique using a laser is widely used.
- a local processing technique hereinafter, sometimes referred to as “local ablation”
- a method using a contact processing technique using a probe such as an electric knife or a non-contact ablation technique using a laser is widely used.
- a local physical injection technique for introducing an injection substance such as a nucleic acid substance into cells or the like (hereinafter sometimes referred to as “local injection”), electroporation or ultrasonic wave is used.
- the conventional sonoporation technique and the particle gun method are widely known.
- the conventional electroporation technique there is a limit in improving the permeability of the cell membrane by the electric field strength, and it is difficult to inject into a target having a rigid cell membrane or cell wall instead of a flexible lipid bilayer membrane.
- it is difficult to locally inject into a target location due to restrictions such as the arrangement of electrodes.
- a bubble ejecting member including a void formed between the extended portion of the outer shell and the tip of the core material immersing the bubble ejecting member in a solution, and applying a high frequency voltage in the solution.
- an object to be processed can be cut (local ablation) by generating bubbles and continuously emitting the bubbles to the object to be processed (see Patent Document 1).
- a bubble ejecting chip in which a plurality of electrodes formed of a conductive material and bubble ejecting portions formed so as to sandwich the electrodes are formed on a substrate (see Patent Document 2).
- the electrode is inserted into an insulating material such as glass, and the insulating material and the electrode are heated and cut off. It is manufactured in a state in which it is covered with an insulating material and the insulating material extends from the tip of the electrode. Therefore, the tip end portion of the insulating material, that is, the bubble jetting port becomes very thin and thin, and there is a problem that it is easily damaged. Further, since the bubble jetting port is very thin and thin, there is also a problem that when the processing subject such as a cell is processed, the processing subject is easily damaged by the bubble jetting port.
- the bubble jetting tip described in Patent Document 2 is manufactured using the technology of semiconductor lithography. Therefore, it is possible to form an arbitrary number of bubble ejecting parts having an arbitrary bubble ejecting size on the substrate. Therefore, it has advantages that it is less likely to be damaged and the size of the bubble ejection port is easier to adjust than the bubble ejection member described in Patent Document 1.
- the bubble jetting tip described in Patent Document 2 is manufactured by the semiconductor lithography technique, there is a problem that the manufacturing process becomes complicated.
- the present disclosure has been made in order to solve the above problems, and as a result of intensive research, (1) a base material formed of a dielectric material, a first surface of the base material, and the first surface Is a bubble ejection hole formed so as to penetrate a second surface which is the opposite side, and (2) the conductive liquid and the bubble ejection hole are in contact with each other. It has been newly found that when a voltage is applied to the electrode and the second electrode, (3) bubbles can be jetted into the conductive liquid from the bubble jet holes.
- an object of the present disclosure is to provide a bubble ejecting method according to a new principle different from a bubble ejecting method using a conventional bubble ejecting member (bubble ejecting tip), a bubble ejecting device for use in the bubble ejecting method, and a bubble ejecting method.
- the present invention relates to a bubble jetting device including a jetting device.
- the present disclosure relates to a bubble jetting method, a bubble jetting device, and a bubble jetting apparatus shown below.
- a bubble ejecting method using a device for ejecting bubble comprising:
- the device for ejecting bubbles is A base material made of a dielectric material, A bubble ejection hole formed so as to penetrate the first surface of the base material and the second surface opposite to the first surface; A first opening formed in a portion of the first surface where the bubble ejection hole penetrates; A second opening formed in a portion of the second surface through which the bubble ejection hole penetrates,
- the bubble ejection method is A base material and a conductive liquid contacting step of contacting a conductive liquid with a portion including at least the first opening and the second opening;
- a conductive liquid and electrode contacting step in which a first electrode is brought into contact with the conductive liquid on the side of the first opening and a second electrode is brought into contact with the conductive liquid on the side of the second opening;
- the bubble ejection method according to (1) above (3)
- the size of the first opening is different from the size of the second opening, The bubble jetting method according to (1) or (2) above.
- the dielectric strength of the dielectric is 10 MV / m or more, The bubble jetting method according to any one of (1) to (3) above.
- the base material is formed of a flexible material, The bubble jetting method according to any one of (1) to (4) above.
- At least two bubble ejection holes are formed, The bubble jetting device according to (6) above.
- the size of the first opening is different from the size of the second opening, The device for ejecting bubbles according to (6) or (7) above.
- the dielectric strength of the dielectric is 10 MV / m or more, The bubble jetting device according to any one of (6) to (8) above.
- the base material is formed of a flexible material,
- (11) further including a first chamber and a second chamber,
- the first chamber is A portion including at least the first opening of the first surface of the base material;
- a chamber first member arranged so as to contact the first surface; Including, By filling the first chamber with a conductive liquid, the first opening can contact the conductive liquid
- the second chamber is A portion of at least the second opening of the second surface of the substrate;
- the bubble jetting device according to any one of (6) to (10) above.
- the bubble ejection device disclosed in the present application can be easily manufactured by forming a bubble ejection hole in a base material formed of a dielectric so as to penetrate the base material. Further, since the bubble ejection holes are formed so as to penetrate the base material, the bubbles are ejected from the surface of the base material. Therefore, unlike the conventional bubble ejection port, it is less likely to be damaged. Therefore, the convenience of handling the device for ejecting air bubbles when performing the air bubble ejection method is improved.
- FIG. 1A is a top view of the device 1a according to the first embodiment
- FIG. 1B is a sectional view taken along line XX ′ of FIG. 1A
- 2A to 2D are schematic cross-sectional views for explaining the principle of ejection of bubbles B.
- FIG. 3A is a top view of the device 1b according to the second embodiment
- FIG. 3B is a sectional view taken along line X-X ′ of FIG. 3A
- 4A is a top view of the device 1c according to the third embodiment
- FIG. 4B is a cross-sectional view taken along the line X-X ′ of FIG. 4A.
- FIG. 5A is a top view of the device 1d according to the fourth embodiment, and FIG. 5B is a sectional view taken along line X-X ′ of FIG. 5A.
- FIG. 5C is a top view of a modified example of the device 1d, and FIG. 5D is a sectional view taken along line XX ′ of FIG. 5C.
- FIG. 6 is a diagram for explaining the outline of the bubble jetting device 10.
- FIG. 7 is a flowchart showing the procedure of the bubble ejection method.
- FIG. 8 is a drawing-substituting photograph, which is a photograph of the occurrence of bubbles B with a high-speed camera in the first embodiment.
- 9 is a drawing-substituting photograph
- FIG. 9A is a photograph of the device of Example 2 taken from above
- FIG. 9B is a photograph after electric output, showing a bubble in which a dotted circle is grown.
- 10 is a drawing substitute photograph
- FIG. 10A is a photograph from the first opening side when the device of Example 3 is used
- FIG. 10B is a photograph from the first opening side when the device of Example 4 is used.
- the part surrounded by the white circle in the photo is the bubble that has been ejected.
- FIG. 11 is a drawing-substituting photograph.
- FIG. 11A is a photograph immediately after outputting electricity
- FIG. 11B is a photograph after outputting electricity for a while
- 12 is a drawing-substituting photograph.
- FIG. 12A is a photograph before applying a voltage
- FIG. 12B is a photograph after applying a voltage of 450 V
- FIG. 12C is a photograph after applying a voltage of 650 V
- FIG. 12D is a photograph after applying a voltage of 750V.
- 13 is a photograph as a substitute of a drawing
- FIG. 13A is a photograph of the device of Example 7 after applying the voltage for a while
- FIG. 13B is a photograph of Example 8 after applying the voltage for a while.
- FIG. 14 is a photograph as a substitute of a drawing, and in Example 9, FIG. 14A is a photograph of the first opening side before voltage application, and FIG. 14B is a photograph after voltage application.
- FIG. 15 is a photograph as a substitute of a drawing, which is a photograph of a silicon wafer on which bubbles are made to collide in Example 10.
- FIG. 16 is a graph showing the relationship between the diameter (hole diameter; horizontal axis) of the bubble ejection holes 3 of various devices and the applied voltage (vertical axis) when bubbles start to be ejected in Example 11.
- FIG. 17 is a graph showing an electric field value of the bubble ejection hole 3 when a bubble is ejected, which is analyzed by the finite element method in the eleventh embodiment.
- a bubble ejection method a bubble ejection device (hereinafter sometimes simply referred to as a “device”), and a bubble ejection device will be described in detail with reference to the drawings.
- members having the same function are designated by the same or similar reference numerals. Further, repeated description may be omitted for members having the same or similar reference numerals.
- the numerical values described in the present specification do not strictly mean only the numerical values, and may include an error of ⁇ as long as they are within the range in which the effect disclosed in the present application is achieved. Similarly, in the case of being described as “about”, not only the numerical value is strictly meant, but an error of ⁇ may be included as long as it is within a range where the effect disclosed in the present application is achieved.
- FIG. 1A is a top view of the device 1a
- FIG. 1B is a sectional view taken along line XX ′ of FIG. 1A.
- the device 1a includes a base material 2 formed of a dielectric material and a bubble ejection hole 3.
- the bubble ejection hole 3 is formed so as to penetrate the first surface 21 of the base material 2 and the second surface 22 that is the surface opposite to the first surface 21, and the first surface 21 has the first opening.
- the second opening 32 is formed in the second surface 22.
- FIGS. 2B to 2D are schematic cross-sectional views for explaining the principle of ejection of bubbles B. Since the components of the device 1a are the same, the reference numerals other than the bubble B are omitted in FIGS. 2B to 2D.
- the conductive liquid L which is a conductive liquid
- the first electrode 4a is brought into contact with the conductive liquid L on the first opening 31 side
- the second electrode 4b is brought into contact with the conductive liquid L on the second opening 32 side
- an electric output mechanism (not shown) and the first electrode 4a and the second electrode 4b are connected by an electric wire or the like.
- a voltage is applied to the first electrode 4a and the second electrode 4b, as shown in FIG.
- bubbles B are generated around the bubble ejection holes 3, and as shown in FIG. 2C, the generated bubbles B are generated. Grow so as to block the bubble ejection holes 3. Then, the bubble B, which has continued to grow, is ejected into the conductive liquid L as shown in FIG. 2D.
- the base material 2 does not conduct electricity, but an electric field is generated around the bubble ejection hole 3 by accumulating electricity. It is thought to be because it is doing. Therefore, it is desirable that the base material 2 be formed of a dielectric material that is a material through which no current flows or is negligibly small and an electric field is generated. Examples of the material forming the base material 2 include known dielectric materials such as thermoplastic resins, thermosetting resins, ultraviolet curable resins, glass, ceramics, and mica.
- the size of the first opening 31 or the second opening 32 of the bubble ejection hole 3 described later is relatively large, a relatively large voltage is applied in order to eject the bubble B from the bubble ejection hole 3. . Then, if dielectric breakdown occurs due to the applied voltage, the size of the bubble ejection hole 3 (first opening 31 and / or second opening 32) may change or the base material 2 may be damaged.
- the material constituting the base material 2 depends on the thickness of the base material 2 and / or the size of the bubble ejection holes 3, but for example, the dielectric strength is 4 MV / m or more, 5 MV / m or more, Examples of the material include 6 MV / m or more, 7 MV / m or more, 8 MV / m or more, 9 MV / m or more, and 10 MV / m or more.
- Examples of the material having a dielectric strength of 10 MV / m or more include polyimide (23 MV / m), polystyrene (20 to 28 MV / m), glass (20 to 40 MV / m), epoxy resin (no filler, 11.8 to 19.6 MV / m), epoxy resin (silica-filled, 11.8 to 19.6 MV / m), epoxy resin (glass fiber-filled, 11.8 to 15.7 MV / m), and the like. Materials other than the above may be used. There is no particular upper limit to the dielectric strength.
- the thickness of the substrate 2, in other words, the length in the penetrating direction of the bubble ejection holes 3 is not particularly limited as long as it is within a range in which bubbles can be ejected, but for example, the lower limit value is 0.1 ⁇ m or more, 1 ⁇ m or more, Can be
- the upper limit value can be 1 cm or less, 5 mm or less, 1 mm or less, 500 ⁇ m or less, 200 ⁇ m or less, 100 ⁇ m or less.
- the thickness of the substrate 2 may or may not be uniform.
- the above lower limit value and the upper limit value are the thickness of the base material of the portion where the bubble ejection hole 3 is formed, and the thickness of the base material 2 other than the portion where the bubble ejection hole 3 is formed. May be in a range deviating from the above upper limit and lower limit.
- the base material 2 may be formed so as to have flexibility, although it depends on the combination of the material and the thickness of the base material 2.
- the base material 2 has flexibility, when the processing target is ablated using the device 1a, even if the processing target is curved, such as plant or animal skin, the processing target is the device 1a. The effect of being able to come into contact with.
- the highly flexible material include polyimide and the like.
- the shape of the bubble ejection hole 3 is not particularly limited as long as bubbles can be ejected.
- the shape of the first opening 31 and the second opening 32 the shape is circular, elliptical, or angular. Examples include polygons with 3 or more.
- the line connecting the first opening 31 and the second opening 32 is as in the example shown in FIG. 1B. It may be a straight line or a non-straight line such as a curved line or a step.
- the first opening 31 and the second opening 32 have the same shape, that is, the bubble ejection holes 3 have the same cylindrical shape, but the first opening 31 and the second opening 32 have the same diameter.
- the shape of 32 may be different.
- the sizes of the first opening 31 and the second opening 32 are not particularly limited as long as the conductive liquid L can enter the bubble ejection holes 3 by the capillary force and bubbles can be ejected. If the bubble ejection hole 3 has a circle in which the first opening 31 and the second opening 32 have the same size, that is, if the bubble ejection hole 3 is assumed to have a cylindrical shape, the lower limit value of the diameter of the first opening 31 and the second opening 32 is set. Can be, for example, 0.1 ⁇ m or more, 0.5 ⁇ m or more, 1 ⁇ m or more, 2 ⁇ m or more, 5 ⁇ m or more.
- the upper limit of the diameter of the first opening 31 and the second opening 32 is 500 ⁇ m or less, 400 ⁇ m or less, 300 ⁇ m or less, It can be 200 ⁇ m or less and 100 ⁇ m or less.
- the shapes of the first opening 31 and the second opening 32 are other than the circular shape, the diameter of the circumscribing circle having a shape other than the circular shape may be replaced with the above diameter.
- the conductive liquid L may easily enter the bubble ejection holes 3 by subjecting the base material 2 to hydrophilic treatment as necessary. .
- the hydrophilic treatment may be performed by a known method such as plasma treatment.
- the method for forming the bubble ejection holes 3 is not particularly limited as long as it is formed so as to penetrate the first surface 21 and the second surface 22 of the base material 2.
- it can be formed by a known method such as a method of forming a through hole using a drill or a method of covering with a mask and etching.
- FIG. 3A is a top view of the device 1b
- FIG. 3B is a sectional view taken along line XX ′ of FIG. 3A.
- the device 1b is different from the device 1a according to the first embodiment in that at least two or more bubble ejection holes 3 are formed, and other points are similar to the device 1a.
- FIG. 3A and FIG. 3B show an example in which three bubble ejection holes 3 are arranged in series, the number of bubble ejection holes 3 is not limited, and the arrangement of the bubble ejection holes 3 is also dependent on the purpose. It may be decided as appropriate.
- the device 1b it is possible to simultaneously eject bubbles to different positions of the object to be processed.
- Patent Document 2 describes that by forming a plurality of bubble jetting portions, bubbles are jetted simultaneously to different positions of a workpiece.
- the chip described in Patent Document 2 is manufactured by using a photolithography technique. Therefore, when manufacturing chips in a manufacturing plant, the photomask of any shape can be used to adjust the arrangement of bubble outlets, etc., but it is not possible to change the number or arrangement of bubble outlets at the site of use. Have difficulty.
- the device 1b is different from Patent Document 2 in the principle (apparatus) of bubble ejection, and the bubble ejection hole 3 can be easily formed by using a drill or the like. Therefore, the location of the bubble ejection holes 3 can be adjusted as needed at the site of use.
- FIG. 4A is a top view of the device 1c
- FIG. 4B is a sectional view taken along line XX ′ of FIG. 4A.
- the device 1c differs from the device 1a according to the first embodiment in that the size of the first opening 31 and the size of the second opening 32 are different.
- size means the diameter in the case of a circle, and the diameter of the circumscribing circle in cases other than the circle diameter.
- the size of the first opening 31 is smaller than the size of the second opening 32, but the size of the first opening 31 may be larger than the size of the second opening 32.
- the bubble ejection holes 3 formed such that the first opening 31 and the second opening 32 have different sizes may be described as “tapered”. Further, the cylindrical and prismatic bubble ejection holes 3 having the same shape and size of the first opening 31 and the second opening 32 may be referred to as “no taper”.
- the device 1a in which the first opening 31 and the second opening 32 have substantially the same shape
- bubble ejection is performed when one of the first electrode 4a and the second electrode 4b is used as an anode and the other is used as a cathode
- the bubble B grown in the hole 3 is ejected from the anode toward the cathode.
- bubbles are ejected from the smaller size of the first opening 31 or the second opening 32 regardless of the direction of the anode and the cathode. This is because the smaller opening portion of the first opening 31 or the second opening 32 has a higher resistance than the larger opening portion and a large voltage is applied, so that bubbles are generated in the smaller opening direction. Conceivable.
- the formation of the bubble ejection hole 3 having a taper is not particularly limited as long as the taper can be formed.
- it is produced using a 3D printer; a tapered mold is formed, and a curable resin such as heat, light, and ultraviolet rays, or a molten thermoplastic resin is poured into the mold, and the mold is separated after the resin is cured: laser cutting Processing; and the like.
- the first opening 31 has a circular shape
- the second opening 32 has a larger diameter than the first opening 31
- p is substantially orthogonal to the virtual plane 32a of the second opening 32.
- Z the angle between the virtual plane 32a of the second opening 32 (virtual line 32a in cross section) and the wall surface 33 of the bubble ejection hole 3 (wall surface line 33 in cross section)
- Z The upper limit of is less than 90 °.
- the lower limit value of Z may be larger than 0 ° in principle, but may be, for example, 1 °, 5 °, 30 °, 60 °.
- the area of the first opening 31 is set to 1 instead of the above angle, the area of the second opening 32 is larger than 1, for example, 10,000 or less, 5,000 or less, 1,000 or less, 500 or less, 100 or less. Hereafter, it can be 50 or less.
- the shapes of the first opening 31 and the second opening 32 are other than circular, for example, when they are elliptical or polygonal, the area ratio of the first opening 31 and the second opening 32 is the same as the area ratio of the circle.
- the bubble ejection holes 3 are symmetrical with respect to the imaginary line p in a sectional view, but the taper shape of the bubble ejection holes 3 is not limited to the example shown in FIG. 4C.
- the bubble ejection holes 3 may be laterally asymmetric when viewed in cross section.
- the size of the smaller opening may be the size of the first opening 31 and the second opening 32 exemplified in the device 1a of the first embodiment. it can.
- the thickness of the device 1c may be the thickness illustrated in the device 1a of the first embodiment, but unlike the device 1a, the electric field is likely to concentrate in the smaller opening of the device 1c. Therefore, although it varies depending on the angle Z between the second opening 32 and the wall surface 33 (or the diameter ratio or the area ratio between the first opening 31 and the second opening 32), if it is within the range in which bubbles can be ejected, the device 1a is a base material. 2 may be thicker.
- FIG. 5A is a top view of the device 1d
- FIG. 5B is a sectional view taken along line XX ′ of FIG. 5A
- FIG. 5C is a top view of a modified example of the device 1d
- FIG. 5D is a sectional view taken along line XX ′ of FIG. 5C.
- the device 1d and its modified example are different from the device 1a of the first embodiment in that the device 1d and its modified example further include a first chamber 5a and a second chamber 5b for filling the conductive liquid L, and other points are the first Is the same as the embodiment of.
- the first chamber 5a of the device 1d includes a portion of the first surface 21 of the substrate 2 including at least the first opening 31 and a chamber of the first chamber 5a arranged so as to contact the first surface 21.
- 1 member 51a is included.
- the chamber first member 51a is not particularly limited in the position where the first chamber 5a includes the first opening 31 and can be arranged at any position on the first surface 21.
- the second chamber 5b includes a portion including at least the second opening 32 of the second surface 22 of the base material 2 and a chamber second member 51b arranged so as to be in contact with the second surface 22.
- the chamber second member 51b is not particularly limited in the position where the second chamber 5b includes the second opening 32, and can be arranged at any position on the second surface 22.
- the chamber first member 51a and the chamber second member 51b can be made of an electrically and chemically inert material.
- glass, sapphire, ceramic, resin, rubber, elastomer, SiO 2 , SiN, Al 2 O 3 or the like can be used.
- the chamber first member 51a and the chamber second member 51b may be liquid-tightly bonded to the base material 2 by using an adhesive or the like.
- either the first chamber 5a or the second chamber 5b may have a size such that the filled conductive liquid L does not leak due to surface tension.
- the conductive liquid L is brought into contact with the object to be processed and the bubbles can be ejected to the object to be machined, so that it is possible to eject the bubbles to the object to be processed at any place.
- a modified example of the device 1d shown in FIGS. 5C and 5D is different from that of the device 1d shown in FIGS. 5A and 5B except that the base material 2 is inserted in the box. 5A and same as device 1d shown in FIG. 5B. More specifically, the method of using the modified example of the device 1d is that the conductive liquid L is filled from above the first chamber 5a and the second chamber, and the workpiece is inserted from above in the direction in which bubbles are ejected. , Device 1d. As is clear from FIGS.
- the first electrode may be arranged in the first chamber 5a and the second electrode may be arranged in the second chamber 5b.
- the first electrode is not particularly limited as long as it is a place that can come into contact with the conductive liquid L when the conductive liquid L is filled with the chamber first member 51a or the first surface 21.
- the second electrode may be arranged at a location where it can come into contact with the conductive liquid L when the conductive liquid L is filled in either the chamber second member 51b or the second surface 22.
- the devices 1a to 1d (modifications) illustrated above are merely examples, and the illustrated embodiments may be combined.
- the tapered bubble ejection hole 3 of the third embodiment may be adopted in the device 1b of the second embodiment and the device 1d of the fourth embodiment.
- the first chamber 5a and the second chamber 5b of the fourth embodiment may be adopted as the device 1b of the second embodiment and the device 1c of the third embodiment.
- the first electrode 4a may be arranged on the first surface 21 and the second electrode 4b may be arranged on the second surface 22 of the devices 1a to 1c of the first to third embodiments.
- Other changes may be made as appropriate as long as the object disclosed in the present application can be achieved.
- FIG. 6 is a diagram for explaining the outline of the bubble jetting device 10.
- the bubble jetting device 10 can be manufactured by combining the bubble jetting device 1 and the electric output mechanism 6. Note that FIG. 6 shows an example using the bubble jetting device 1a.
- the electric output mechanism 6 may include at least the power supply device 61, the first electrode 4a, the second electrode 4b, and the electric wire 63 for forming a circuit with the power supply device 61 and the first electrode 4a and the second electrode 4b. .
- the electric output mechanism 6 does not have to include the first electrode 4a and the second electrode 4b.
- the bubble ejection device 10 is provided with a non-inductive resistor 64, a voltage amplification circuit (not shown), an input / output port (DIO; Digital Input Output) 65, a control device 66 such as a PC for controlling the power supply device 61, etc., as necessary. Good.
- the electric output mechanism 6 may be prepared by preparing the above-described constituent elements, or may be prepared by incorporating the non-inductive resistor 64, the input / output port 65, and the like into a conventional electric knife electric circuit.
- the conductive material for forming the first electrode 4a and the second electrode 4b is not particularly limited as long as it can pass electricity and can be used as an electrode, and is a metal, for example, gold, silver, copper, aluminum or the like. Examples thereof include alloys containing a small amount of tin, magnesium, chromium, nickel, zirconium, iron, silicon and the like.
- a general commercial AC power supply device can be used as the power supply device 61.
- the current, voltage and frequency output from the electric output mechanism 6 to the first electrode 4a and the second electrode 4b are not particularly limited as long as bubbles can be jetted from the bubble jetting holes 3 into the conductive liquid L.
- the electric current may be set to 1 mA to 500 mA, or 50 mA to 200 mA so as to prevent the bubbles from being generated poorly and the substrate 2 from being dielectrically broken down.
- the voltage may be set to, for example, 200 V to 4000 V or 600 V to 1800 V to prevent difficulty in bubble generation and dielectric breakdown of the base material 2.
- the pulse width is preferably 500 ns to 1 ms, more preferably 1 ⁇ s to 100 ⁇ s.
- the pulse width is shorter than 500 ns, the bubbles cannot be ejected, and if it is 1 ms or more, the bubbles are not properly ejected.
- the current, voltage, pulse width, etc. may be appropriately adjusted depending on the material and thickness of the base material 2, the size of the first opening 31, the second opening 32, and the like.
- FIG. 7 is a flowchart showing the procedure of the bubble ejection method.
- the bubble ejection method includes a base material / conductive liquid contacting step (S100), a conductive liquid / electrode contacting step (S110), a voltage applying step (S120), and a bubble ejecting step (S130).
- the conductive liquid L may be first dropped onto the object to be processed 7, the device 1a may be placed above the conductive liquid L, and the conductive liquid L may be further dropped onto the device 1a.
- the conductive liquid L may be filled in the first chamber and the second chamber.
- the conductive liquid L is not particularly limited as long as electricity can pass, and examples thereof include water and a solution in which a metal salt or the like is dissolved.
- the first electrode 4a is brought into contact with the conductive liquid L on the first opening 31 side, and the second electrode 4b is brought into contact with the conductive liquid L on the second opening 32 side.
- the base material / conductive liquid contacting step (S100) and the conductive liquid / electrode contacting step (S110) may be simultaneously performed.
- the voltage applying step (S120) a voltage is applied to the first electrode 4a and the second electrode 4b. Then, in the bubble ejection step (S130), the bubbles grown in the bubble ejection holes 3 are ejected.
- the object to be processed is cut (local ablation) or an injection substance is introduced into the object to be processed (local injection). be able to.
- the silicon substrate could be cut by using the device according to the embodiment. Therefore, the bubble ejection device 10 can be used as, for example, a local ablation device or a local injection device. Further, when a plating solution is used as the conductive liquid, the bubble jetting device 10 can be used as a plating device.
- the bubble jetting method can be used as, for example, a local ablation method, a local injection method, or a plating method.
- the workpiece 7 is not particularly limited as long as it can be locally ablated, locally injected, and plated, as described above.
- animal cells such as stem cells, skin cells, mucous cells, hepatocytes, pancreatic islet cells, nerve cells, chondrocytes, endothelial cells, epithelial cells, bone cells, muscle cells, egg cells, etc. isolated from human or non-human animal tissues.
- Cells such as plant cells, insect cells, Escherichia coli, yeast and mold; relatively hard biological samples such as rice and plant cells; silicone, glass epoxy, polyester, polyimide, BT resin, and thermosetting polyphenylene ether resin Resin substrate using a class of materials; inorganic substrate using an inorganic material such as alumina (ceramics) substrate; silicon wafer, metal substrate such as aluminum or copper; insulating layer on the metal substrate, and copper as a conductor on the insulating layer A metal base substrate on which foils are stacked;
- Example 1 A device and a bubble ejecting apparatus were produced by the following procedure, and the bubble ejecting method was carried out using the produced bubble ejecting apparatus.
- the device of Example 1 including the first chamber and the second chamber was produced by disposing the substrate 2 in a box-shaped chamber member (acrylic resin manufactured by Formlabs) as shown in FIG. 5D.
- a first electrode 4a and a second electrode 4b were produced using a copper wire (EggsSTORE, diameter 2 mm).
- a bubble ejection device 10 is produced by electrically connecting the produced first electrode 4a and the produced second electrode 4b with an electric wire using a general-purpose electric knife power source Hyfrequator2000 (ConMed Co., Ltd.). did.
- the first chamber 5a and the second chamber 5b of the manufactured device were filled with a conductive liquid (0.9 wt% sodium chloride aqueous solution).
- the first electrode 4a was inserted in contact with the conductive liquid in the first chamber 5a
- the second electrode 4b was inserted in contact with the conductive liquid in the second chamber 5b.
- the output conditions of the power supply device were set to an applied voltage of 800 V, a voltage application frequency of 1 (times), and a pulse width of about 1 ⁇ s, and electricity was output to the first electrode 4a and the second electrode 4b.
- the ejection of bubbles was observed using a high speed camera (VW-9000, manufactured by Keyence).
- Fig. 8 is a photograph of the bubble B generated with a high-speed camera.
- the broken line arrow in the photograph shows the first opening (Open) of the bubble ejection hole 3, and the solid line arrow shows the bubble.
- the numbers below each photo represent the time after electrical output.
- Example 2 Next, a bubble ejection experiment was conducted with a device having a plurality of bubble ejection holes 3 formed therein.
- a device was produced by the same procedure as in Example 1 except that the bubble ejection holes 3 were formed in three places so that the diameter of the bubble ejection holes 3 was about 100 ⁇ m and the interval between the adjacent bubble ejection holes 3 was about 600 ⁇ m. did.
- FIG. 9A is a photograph of the device of Example 2 taken from above
- FIG. 9B is a photograph after electric output, showing a bubble in which a dotted circle is grown.
- FIG. 10A is a photograph from the first opening side when the device of Example 3 is used
- FIG. 10B is a photograph from the first opening side when the device of Example 4 is used. Arrows in FIG. 10A and FIG. Then, the part surrounded by the white circle in the photo is the bubble that has been ejected. As shown in the photograph, in any of the devices of Example 3 and Example 4, ejection of bubbles was confirmed. Moreover, it was confirmed that bubbles were ejected from the first opening having a small size even when the experiment was performed by exchanging the first electrode 4a and the second electrode 4b, that is, by exchanging the anode and the cathode.
- the thicker the device the higher the voltage for ejecting bubbles. In other words, under the same electrical output conditions, the thicker the device, the more difficult it is for bubbles to eject.
- the device of Example 3 has a larger thickness (3 mm) than the device of Example 4 under the condition that the size of the first opening and the electric output are the same. Despite being thick (5 mm), the device of Example 3 produced larger bubbles. From the above results, it was confirmed that when the taper angle of the bubble ejection hole 3 was increased (the size ratio of the second opening to the first opening was increased), the bubbles were easily ejected.
- Example 5 Next, a bubble ejection experiment was conducted by changing the shape of the bubble ejection hole 3.
- a device in which the first opening and the second opening were substantially square was produced in the same procedure as in Example 1 except that a cutter was used instead of the drill. One side of the first opening and the second opening was about 500 ⁇ m.
- a bubble ejecting apparatus was produced in the same procedure as in Example 1 except that the device of Example 5 was used instead of the device of Example 1, and the bubble ejecting method was carried out.
- FIG. 11A is a photograph from the first opening side immediately after outputting electricity
- FIG. 11B is a photograph from the first opening side after outputting electricity for a while.
- the bubbles are generated from the corners where the electric field is easily concentrated, grow to cover the entire first opening as shown in FIG. 11B, and then the bubbles are ejected. It was confirmed. From the above results, it was confirmed that the bubbles were ejected even if the bubble ejection holes 3 had a polygonal shape (first opening and second opening). It was also confirmed that when the bubbles were ejected, the bubbles were generated around the bubble ejection hole 3, particularly from the portion where the electric field was likely to concentrate, and the bubbles were ejected after covering the entire first opening. .
- Example 6 Next, an experiment was conducted to examine the relationship between the size of the bubble ejection hole (first opening) and the applied voltage.
- a device in which the first opening and the second opening were substantially circular was produced by the same procedure as in Example 1 except that the shape of the drill was changed. The diameter of the first opening and the second opening was about 200 ⁇ m.
- [Fabrication of bubble ejection device and implementation of bubble ejection method] instead of the device of Example 5, a device of Example 6 was used, and a bubble ejecting apparatus was produced in the same procedure as in Example 1 except that the applied voltage was changed to 450 V, 650 V, and 750 V, The bubble ejection method was implemented.
- FIG. 12A is a photograph from the first opening side before applying a voltage
- FIG. 12B is a photograph from the first opening side after applying a voltage of 450V
- FIG. 12C is a first opening after applying a voltage of 650V
- 12D is a photograph from the side of the first opening after applying a voltage of 750V.
- the part surrounded by the broken white circle in FIG. 12A corresponds to the first opening.
- the bubble ejection hole 3 was filled with the conductive liquid.
- FIGS. 12B to 12D as the applied voltage is increased, the conductive liquid in the bubble ejection hole 3 becomes smaller. It was confirmed that a black part around the conductive liquid) grew.
- a voltage of 750 V was applied, as shown in FIG. 12D, the inside of the bubble ejection hole 3 was entirely covered with bubbles, and the ejection of bubbles was also confirmed.
- 450 V in FIG. 12B and 650 V in FIG. 12C were applied, no bubbles were ejected.
- FIG. 13A is a photograph from the first opening side of the device of Example 7 after applying the voltage for a while
- FIG. 13B is a photograph of the device of Example 8 from the first opening side after applying the voltage for a while. It is a photograph.
- the base material 2 is made thick (the bubble ejection holes 3 are long), the voltage required to cover the bubble ejection holes 3 with the bubbles and further eject the bubbles is increased. Therefore, it was confirmed that the thickness of the base material 2 may be appropriately adjusted according to the conditions such as the applied voltage.
- Example 9 Next, an experiment was conducted by changing the type of the base material 2.
- a glass MICRO COVER GLASS no. 1 manufactured by Matsunami Glass Industry Co., Ltd.
- the bubble ejection holes 3 were formed by using a UV laser. Note that the UV laser processing was affected by heat, and the bubble ejection holes 3 had a tapered shape.
- the diameter of the first opening was about 70 ⁇ m, and the diameter of the second opening was about 200 ⁇ m.
- FIG. 14A is a photograph taken from the first opening side before applying a voltage.
- the circle in the photograph is the first opening, the discolored portion around the first opening is the portion affected by heat, and the outer periphery of the discolored portion corresponds to the size of the second opening.
- FIG. 14B is a photograph taken from the side of the first opening after applying the voltage, and the portion surrounded by the broken line is the bubble grown so as to cover the first opening. Then, the ejection of bubbles was confirmed.
- Example 10 Next, a cutting experiment of the object to be processed was conducted.
- a device was manufactured by the same procedure as in Example 1 except that bubble ejection holes having a diameter of about 100 ⁇ m were formed by puncturing using a tungsten wire.
- Example 10 [Fabrication of bubble ejection device and implementation of bubble ejection method]
- the device of Example 10 was used in place of the device of Example 1, and a bubble ejection device was produced in the same procedure as in Example 1.
- the output was set to 2000 V
- a silicon wafer (4 inch thickness 525 ⁇ 25 ⁇ m, single-sided mirror wafer manufactured by Matsunami Seisakusho Co., Ltd.) was placed in front of the bubble ejection hole, and the position of the silicon wafer was shifted.
- the same procedure as in Example 1 was performed except that the voltage was applied multiple times.
- FIG. 15 is a photograph of a silicon wafer on which bubbles are made to collide in Example 10, and the portions indicated by arrows are holes formed in the silicon wafer. From the above results, it was confirmed that the device, the bubble ejecting apparatus, and the bubble ejecting method according to the embodiment can be used for cutting a workpiece or the like.
- Example 11 Next, devices with different thicknesses of the substrate 2 (length of the bubble ejection holes 3) and diameters of the bubble ejection holes 3 were prepared, and the electric field value of the bubble ejection holes 3 when the bubbles were ejected was examined.
- Base materials 2 having a thickness of 25 ⁇ m, 50 ⁇ m, and 75 ⁇ m were prepared, and the bubble ejection holes 3 were formed on the respective base materials 2 to have diameters of about 100 ⁇ m, about 200 ⁇ m, about 300 ⁇ m, and about 400 ⁇ m.
- a device was manufactured by the same procedure as in Example 1.
- FIG. 16 is a graph showing the relationship between the diameter (pore diameter; horizontal axis) of the bubble ejection holes 3 of various devices and the applied voltage (vertical axis) when the bubbles start ejecting. As shown in FIG. 16, it was confirmed that the smaller the diameter of the bubble ejection holes 3, the lower the voltage at which the bubbles could be ejected, and the thinner the substrate 2 was, the lower the voltage at which the bubbles could be ejected.
- FIG. 17 shows the analysis result. As shown in FIG. 17, although it depends on the thickness of the base material 2 and the size of the bubble ejection hole 3, it is confirmed that the bubbles can be ejected from the bubble ejection hole 3 when an electric field of about 4 MV / m or more is generated in the bubble ejection hole 3. did. From the results shown in FIG. 16 and FIG. 17, it was also clarified that when a material having a small dielectric strength is used as the base material 2, the base material 2 may be thickened.
- the bubble ejection device disclosed in the present application can be easily manufactured by forming a bubble ejection hole in a base material formed of a dielectric so as to penetrate the base material. Further, since the bubble ejection holes are formed so as to penetrate the base material, the bubbles are ejected from the surface of the base material. Therefore, unlike the conventional bubble ejection port, it is less likely to be damaged. Therefore, it is useful in fields requiring local processing, such as semiconductor manufacturing fields, information processing fields, livestock farming, agriculture, forestry and fisheries fields.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Sustainable Development (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Cell Biology (AREA)
- Plant Pathology (AREA)
- Clinical Laboratory Science (AREA)
- Biophysics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Coating Apparatus (AREA)
Abstract
Description
前記気泡噴出用デバイスは、
誘電体で形成された基材と、
前記基材の第1面と該第1面とは反対側の面である第2面とを貫通するように形成された気泡噴出孔と、
前記第1面の前記気泡噴出孔が貫通した箇所に形成された第1開口と、
前記第2面の前記気泡噴出孔が貫通した箇所に形成された第2開口と
を含み、
前記気泡噴出方法は、
少なくとも前記第1開口と前記第2開口を含む部分を導電液に接触させる、基材および導電液接触工程と、
第1電極を前記第1開口側の前記導電液に接触し、第2電極を前記第2開口側の前記導電液に接触させる、導電液および電極接触工程と、
前記第1電極および前記第2電極に電圧を印加する電圧印加工程と、
前記気泡噴出孔から前記導電液中に気泡を噴出する気泡噴出工程と、
を含む、
気泡噴出方法。
(2)前記気泡噴出孔が、少なくとも2個以上形成されている、
上記(1)に記載の気泡噴出方法。
(3)前記第1開口のサイズと、前記第2開口のサイズが異なる、
上記(1)または(2)に記載の気泡噴出方法。
(4)前記誘電体の絶縁耐力が、10MV/m以上である、
上記(1)~(3)の何れか一つに記載の気泡噴出方法。
(5)前記基材が、可撓性の材料で形成されている、
上記(1)~(4)の何れか一つに記載の気泡噴出方法。
(6)誘電体で形成された基材と、
前記基材の第1面と該第1面とは反対側の面である第2面とを貫通するように形成された気泡噴出孔と、
前記第1面の前記気泡噴出孔が貫通した箇所に形成された第1開口と、
前記第2面の前記気泡噴出孔が貫通した箇所に形成された第2開口と、
を含む、
気泡噴出用デバイス。
(7)前記気泡噴出孔が、少なくとも2個以上形成されている、
上記(6)に記載の気泡噴出用デバイス。
(8)前記第1開口のサイズと、前記第2開口のサイズが異なる、
上記(6)または(7)に記載の気泡噴出用デバイス。
(9)前記誘電体の絶縁耐力が、10MV/m以上である、
上記(6)~(8)の何れか一つに記載の気泡噴出用デバイス。
(10)前記基材が、可撓性の材料で形成されている、
上記(6)~(9)の何れか一つに記載の気泡噴出用デバイス。
(11)第1チャンバーおよび第2チャンバーを更に含み、
前記第1チャンバーは、
前記基材の前記第1面の少なくとも前記第1開口を含む部分と、
前記第1面に接するように配置したチャンバー第1部材と、
を含み、
前記第1チャンバーに導電液を充填することで、前記第1開口が前記導電液に接触することができ、
第2チャンバーは、
前記基材の前記第2面の少なくとも前記第2開口を含む部分と、
前記第2面に接するように配置したチャンバー第2部材と、
を含み、
前記第2チャンバーに前記導電液を充填することで、前記第2開口が前記導電液に接触することができる、
上記(6)~(10)の何れか一つに記載の気泡噴出用デバイス。
(12)前記第1チャンバーに配置された第1電極と、
前記第2チャンバーに配置された第2電極と、
を含む、
上記(6)~(11)の何れか一つに記載の気泡噴出用デバイス。
(13)上記(7)~(12)の何れか一つに記載の気泡噴出用デバイスと、
前記気泡噴出用デバイスから気泡を噴出させるための電気出力機構と、
を含む、
気泡噴出装置。
図1を参照して、第1の実施形態に係るデバイス1aについて説明する。図1Aはデバイス1aの上面図、図1Bは図1AのX-X’断面図である。デバイス1aは、誘電体で形成された基材2と、気泡噴出孔3とを含む。気泡噴出孔3は、基材2の第1面21と該第1面21とは反対側の面である第2面22とを貫通するように形成され、第1面21には第1開口31、第2面22には第2開口32が形成されている。
次に、図3を参照して、第2の実施形態に係るデバイス1bについて説明する。図3Aはデバイス1bの上面図、図3Bは図3AのX-X’断面図である。デバイス1bは、気泡噴出孔3が少なくとも2以上形成されている点で第1の実施形態に係るデバイス1aと異なり、その他の点は、デバイス1aと同様である。なお、図3Aおよび図3Bでは、気泡噴出孔3を直列に3個配置した例を示しているが、気泡噴出孔3の数に制限はなく、また、気泡噴出孔3の配置も目的に応じて適宜決めればよい。デバイス1bを用いると、加工対象物の異なる位置に同時に気泡を噴出できる。
次に、図4を参照して、第3の実施形態に係るデバイス1cについて説明する。図4Aはデバイス1cの上面図、図4Bは図4AのX-X’断面図である。デバイス1cは、第1開口31と第2開口32のサイズを異なるように作製した点で、第1の実施形態に係るデバイス1aと異なる。なお、本明細書において、「サイズ」とは、円形の場合は直径、円径以外の場合は外接円の直径を意味する。図4Bに示す例では、第1開口31のサイズが第2開口32のサイズより小さいが、第1開口31のサイズが第2開口32のサイズより大きくてもよい。なお、本明細書において、第1開口31と第2開口32のサイズが異なるように形成した気泡噴出孔3を「テーパーあり」と記載することがある。また、第1開口31と第2開口32の形状およびサイズが同じ円筒状、角柱状の気泡噴出孔3のことを「テーパー無し」と記載することもある。
次に、図5A乃至図5Dを参照して、第4の実施形態に係るデバイス1dおよびその変形例について説明する。図5Aはデバイス1dの上面図、図5Bは図5AのX-X’断面図である。また、図5Cはデバイス1dの変形例の上面図、図5Dは図5CのX-X’断面図である。デバイス1dおよびその変形例は、導電液Lを充填するための第1チャンバー5aおよび第2チャンバー5bを更に具備する点で、第1の実施形態のデバイス1aと異なり、その他の点は、第1の実施形態と同じである。
図6を参照して、気泡噴出装置10の実施形態について説明する。図6は、気泡噴出装置10の概略を説明するための図である。気泡噴出装置10は、気泡噴出用デバイス1と電気出力機構6を組み合せることで作製できる。なお、図6では、気泡噴出用デバイス1aを用いた例を示している。電気出力機構6は、電源装置61、第1電極4a、第2電極4b、電源装置61と第1電極4aおよび第2電極4bとで回路を形成するための電線63を少なくとも含んでいればよい。なお、第1電極4aおよび第2電極4bを、デバイス1の構成要素として配置した場合は、電気出力機構6として、第1電極4aおよび第2電極4bを含まなくてもよい。
図6および図7を参照して、気泡噴出方法の実施形態について説明する。図7は、気泡噴出方法の手順を示すフローチャートである。気泡噴出方法は、基材および導電液接触工程(S100)、導電液および電極接触工程(S110)、電圧印加工程(S120)、気泡噴出工程(S130)、を含んでいる。
以下の手順により、デバイスおよび気泡噴出装置を作製し、作製した気泡噴出装置を用いて気泡噴出方法を実施した。
基材2には、ポリイミド(アズワン株式会社製ポリイミドテープ)フィルム(厚さ30μm)を用い、UVレーザー(株式会社キーエンス製MD-U)で直径約25μmの略円筒状の気泡噴出孔3を形成した。次に、箱型のチャンバー部材(Formlabs社製アクリル樹脂)に、基材2を図5Dに示すように配置することで、第1チャンバーおよび第2チャンバーを含む実施例1のデバイスを作製した。
銅線(EggsSTORE,直径2mm)を用いて第1電極4a、第2電極4bを作製した。電源装置には汎用電気メス用電源Hyfrecator2000(ConMed(株))を用い、作製した第1電極4aと第2電極4bとを電線を用いて電気的に接続することで、気泡噴出装置10を作製した。
作製したデバイスの第1チャンバー5aおよび第2チャンバー5bに、導電液(0.9wt%塩化ナトリウム水溶液)を充填した。また、第1電極4aを第1チャンバー5aの導電液と接触するように挿入し、第2電極4bを第2チャンバー5bの導電液と接触するように挿入した。次に、電源装置の出力条件を、印加電圧800V、電圧印加回数1(回)、パルス幅約1μsに設定し、第1電極4aと第2電極4bに電気を出力した。気泡の噴出は、ハイスピードカメラ(VW-9000,Keyence社製)を用いて観察した。
次に、気泡噴出孔3を複数形成したデバイスで気泡噴出実験を行った。
[デバイスの作製]
気泡噴出孔3の直径が約100μm、隣り合う気泡噴出孔3同士の間隔が約600μmとなるように気泡噴出孔3を3カ所に作製した以外は、実施例1と同様の手順でデバイスを作製した。
次に、実施例1のデバイスに代え、実施例2で作製したデバイスを用いた以外は、実施例1と同様の手順で、気泡噴出装置を作製し、気泡噴出方法を実施した。図9Aは実施例2のデバイスを上方から撮影した写真、図9Bは電気出力後の写真で、点線の丸が成長した気泡を示す。
次に、気泡噴出孔3のテーパーが、気泡噴出に与える影響について確認する実験を行った。
[デバイスの作製]
先ず、3Dプリンターを用いて、図4Cに示す角度Zが55°(実施例3)、70°(実施例4)となる円錐状の鋳型を作製した。次に、作製した鋳型にPDMS(東レ・ダウコーニング社製Sylgard 184)を流し込み硬化し、鋳型を剥離することで、実施例3および実施例4のデバイスを作製した。作製したデバイスのサイズは以下の通りであった。
[実施例3]
・テーパーの角度Z:55°
・厚さ:5mm
・第1開口の直径:100μm
・第2開口の直径:6mm
[実施例4]
・テーパーの角度Z:70°
・厚さ:3mm
・第1開口の直径:100μm
・第2開口の直径:2mm
次に、実施例1のデバイスに代え、実施例3および実施例4で作製したデバイスを用いた以外は、実施例1と同様の手順で、気泡噴出装置を作製し、気泡噴出方法を実施した。図10Aは実施例3のデバイスを用いた際の第1開口側からの写真、図10Bは実施例4のデバイスを用いた際の第1開口側からの写真で、図10Aでは矢印、図10Bでは写真の白丸で囲ってある部分が噴出した気泡である。写真に示すように、実施例3および実施例4の何れのデバイスにおいても、気泡の噴出を確認した。また、第1電極4aと第2電極4bを入れ替え、つまり、陽極と陰極を入れ替えて実験を行っても、サイズが小さい第1開口から気泡が噴出することを確認した。
次に、気泡噴出孔3の形状を変えて気泡噴出実験を行った。
[デバイスの作製]
ドリルに代え、カッターを用いて加工した以外は、実施例1と同様の手順で、第1開口および第2開口が略正方形のデバイスを作製した。第1開口および第2開口の1辺は、約500μmだった。
[気泡噴出装置の作製および気泡噴出方法の実施]
次に、実施例1のデバイスに代え、実施例5のデバイスを用いた以外は、実施例1と同様の手順で気泡噴出装置を作製し、気泡噴出方法を実施した。図11Aは電気を出力した直後の第1開口側からの写真、図11Bは電気を出力してしばらくした後の第1開口側からの写真である。
次に、気泡噴出孔(第1開口)の大きさと印加する電圧の関係を調べる実験を行った。
[デバイスの作製]
ドリルの形状を変えた以外は、実施例1と同様の手順で、第1開口および第2開口が略円形のデバイスを作製した。第1開口および第2開口の直径は、約200μmだった。
[気泡噴出装置の作製および気泡噴出方法の実施]
次に、実施例5のデバイスに代え、実施例6のデバイスを用い、印加する電圧を450V、650V、750Vに変化させた以外は、実施例1と同様の手順で気泡噴出装置を作製し、気泡噴出方法を実施した。図12Aは電圧を印加する前の第1開口側からの写真、図12Bは450Vの電圧を印加した後の第1開口側からの写真、図12Cは650Vの電圧を印加した後の第1開口側からの写真、図12Dは750Vの電圧を印加した後の第1開口側からの写真である。
次に、基材2の厚さ(気泡噴出孔3の長さ)と印加する電圧の関係を調べる実験を行った。
[デバイスの作製]
基材2の材料としてスチロール樹脂(株式会社タミヤ製透明プラバン)を用い、基材2の厚さが200μm(実施例7)と、300μm(実施例8)の2種類を準備した。ドリルを用い、直径200μmの略円筒状の気泡噴出孔3を形成した。
次に、実施例1のデバイスに代え、実施例7および8のデバイスを用い、印加する電圧を1200Vとした以外は、実施例1と同様の手順で気泡噴出装置を作製し、気泡噴出方法を実施した。図13Aは電圧を印加してしばらくした後の実施例7のデバイスの第1開口側からの写真、図13Bは電圧を印加してしばらくした後の実施例8のデバイスの第1開口側からの写真である。
次に、基材2の種類を変えて実験を行った。
[デバイスの作製]
基材2の材料としてガラス(松浪硝子工業株式会社製MICRO COVER GLASS no.1)、を用い、UVレーザーを用いて気泡噴出孔3を形成した。なお、UVレーザー加工は熱の影響で、気泡噴出孔3はテーパーを付けた形状となった。第1開口の直径は約70μm、第2開口の直径は約200μmであった。
次に、実施例1のデバイスに代え、実施例9のデバイスを用い、実施例1と同様の手順で気泡噴出装置を作製し、気泡噴出方法を実施した。図14Aは、電圧を印加する前の第1開口側から撮影した写真ある。なお、写真中の丸が第1開口で、第1開口の周囲の変色した箇所は熱の影響を受けた部分で、変色した箇所の外周が第2開口の大きさに相当する。図14Bは電圧を印加した後の第1開口側から撮影した写真で、破線で囲った部分が第1開口を覆うように成長した気泡である。その後、気泡の噴出を確認した。
次に、加工対象物の切削実験を行った。
[デバイスの作製]
タングステン線を用いた刺突により、直径約100μmの気泡噴出孔を形成した以外は、実施例1と同様の手順によりデバイスを作製した。
次に、実施例1のデバイスに代え、実施例10のデバイスを用い、実施例1と同様の手順で気泡噴出装置を作製した。次に、気泡噴出方法は、出力を2000Vとし、気泡噴出孔の前にシリコンウェハ((株)松浪製作所製4 inch 厚さ525±25μm、片面ミラーウェーハ)を配置し、シリコンウェハの位置をずらしながら、複数回電圧を印加した以外は、実施例1と同様の手順で実施した。
次に、基材2の厚さ(気泡噴出孔3の長さ)および気泡噴出孔3の直径を変えたデバイスを準備し、気泡が噴出した時の気泡噴出孔3の電界値を調べた。
[デバイスの作製]
厚さが25μm、50μm、75μmの基材2を準備し、それぞれの基材2に、直径が約100μm、約200μm、約300μm、約400μmとなるように気泡噴出孔3を形成した以外は、実施例1と同様の手順によりデバイスを作製した。
次に、実施例1のデバイスに代え、実施例11で作製した厚さおよび気泡噴出孔の直径が異なる各種デバイスを用いた以外は、実施例1と同様の手順で、気泡噴出装置を作製し、気泡噴出方法を実施した。なお、気泡噴出方法は、作製したデバイス毎に印加電圧を変え、気泡が噴出し始めた時の印加電圧を調べた。
Claims (13)
- 気泡噴出用デバイスを用いた気泡噴出方法であって、
前記気泡噴出用デバイスは、
誘電体で形成された基材と、
前記基材の第1面と該第1面とは反対側の面である第2面とを貫通するように形成された気泡噴出孔と、
前記第1面の前記気泡噴出孔が貫通した箇所に形成された第1開口と、
前記第2面の前記気泡噴出孔が貫通した箇所に形成された第2開口と
を含み、
前記気泡噴出方法は、
少なくとも前記第1開口と前記第2開口を含む部分を導電液に接触させる、基材および導電液接触工程と、
第1電極を前記第1開口側の前記導電液に接触し、第2電極を前記第2開口側の前記導電液に接触させる、導電液および電極接触工程と、
前記第1電極および前記第2電極に電圧を印加する電圧印加工程と、
前記気泡噴出孔から前記導電液中に気泡を噴出する気泡噴出工程と、
を含む、
気泡噴出方法。 - 前記気泡噴出孔が、少なくとも2個以上形成されている、
請求項1に記載の気泡噴出方法。 - 前記第1開口のサイズと、前記第2開口のサイズが異なる、
請求項1または2に記載の気泡噴出方法。 - 前記誘電体の絶縁耐力が、10MV/m以上である、
請求項1~3の何れか一項に記載の気泡噴出方法。 - 前記基材が、可撓性の材料で形成されている、
請求項1~4の何れか一項に記載の気泡噴出方法。 - 誘電体で形成された基材と、
前記基材の第1面と該第1面とは反対側の面である第2面とを貫通するように形成された気泡噴出孔と、
前記第1面の前記気泡噴出孔が貫通した箇所に形成された第1開口と、
前記第2面の前記気泡噴出孔が貫通した箇所に形成された第2開口と、
を含む、
気泡噴出用デバイス。 - 前記気泡噴出孔が、少なくとも2個以上形成されている、
請求項6に記載の気泡噴出用デバイス。 - 前記第1開口のサイズと、前記第2開口のサイズが異なる、
請求項6または7に記載の気泡噴出用デバイス。 - 前記誘電体の絶縁耐力が、10MV/m以上である、
請求項6~8の何れか一項に記載の気泡噴出用デバイス。 - 前記基材が、可撓性の材料で形成されている、
請求項6~9の何れか一項に記載の気泡噴出用デバイス。 - 第1チャンバーおよび第2チャンバーを更に含み、
前記第1チャンバーは、
前記基材の前記第1面の少なくとも前記第1開口を含む部分と、
前記第1面に接するように配置したチャンバー第1部材と、
を含み、
前記第1チャンバーに導電液を充填することで、前記第1開口が前記導電液に接触することができ、
第2チャンバーは、
前記基材の前記第2面の少なくとも前記第2開口を含む部分と、
前記第2面に接するように配置したチャンバー第2部材と、
を含み、
前記第2チャンバーに前記導電液を充填することで、前記第2開口が前記導電液に接触することができる、
請求項6~10の何れか一項に記載の気泡噴出用デバイス。 - 前記第1チャンバーに配置された第1電極と、
前記第2チャンバーに配置された第2電極と、
を含む、
請求項6~11の何れか一項に記載の気泡噴出用デバイス。 - 請求項7~12の何れか一項に記載の気泡噴出用デバイスと、
前記気泡噴出用デバイスから気泡を噴出させるための電気出力機構と、
を含む、
気泡噴出装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020553380A JP7466199B2 (ja) | 2018-10-26 | 2019-10-21 | 気泡噴出方法、気泡噴出用デバイス、および、気泡噴出装置 |
US17/288,693 US20210395782A1 (en) | 2018-10-26 | 2019-10-21 | Bubble ejection method, bubble ejecting device, and bubble ejection apparatus |
KR1020217014183A KR20210084494A (ko) | 2018-10-26 | 2019-10-21 | 기포 분출 방법, 기포 분출용 디바이스 및 기포 분출 장치 |
EP19876976.2A EP3872160A4 (en) | 2018-10-26 | 2019-10-21 | BUBBLE EJECTOR, BUBBLE EJECTOR AND BUBBLE EJECTOR |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018202368 | 2018-10-26 | ||
JP2018-202368 | 2018-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020085281A1 true WO2020085281A1 (ja) | 2020-04-30 |
Family
ID=70331436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/041260 WO2020085281A1 (ja) | 2018-10-26 | 2019-10-21 | 気泡噴出方法、気泡噴出用デバイス、および、気泡噴出装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210395782A1 (ja) |
EP (1) | EP3872160A4 (ja) |
JP (1) | JP7466199B2 (ja) |
KR (1) | KR20210084494A (ja) |
WO (1) | WO2020085281A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009527321A (ja) * | 2006-02-22 | 2009-07-30 | ザ ボード オブ トラスティーズ オブ ザ リーランド スタンフォード ジュニア ユニバーシティ | 薬剤の細胞中へのアバランシェ媒介導入のための方法および装置 |
WO2013129657A1 (ja) | 2012-03-02 | 2013-09-06 | 独立行政法人科学技術振興機構 | 気泡噴出部材及びその製造方法、気液噴出部材及びその製造方法、局所アブレーション装置及び局所アブレーション方法、インジェクション装置及びインジェクション方法、プラズマ気泡噴出部材、並びに治癒装置及び治癒方法 |
WO2016052511A1 (ja) | 2014-09-30 | 2016-04-07 | 国立研究開発法人科学技術振興機構 | 気泡噴出チップ、局所アブレーション装置及び局所アブレーション方法、並びにインジェクション装置及びインジェクション方法 |
WO2017069085A1 (ja) * | 2015-10-19 | 2017-04-27 | 株式会社ベックス | 気泡噴出チップ、局所アブレーション装置及び局所アブレーション方法、並びにインジェクション装置及びインジェクション方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19834612A1 (de) * | 1998-07-31 | 2000-02-24 | Dornier Medtech Holding Int Gmbh | Verfahren zum intrazellulären Transfer von Oligonukleotiden und Vorrichtung zur Durchführung desselben |
US7704743B2 (en) * | 2005-03-30 | 2010-04-27 | Georgia Tech Research Corporation | Electrosonic cell manipulation device and method of use thereof |
-
2019
- 2019-10-21 KR KR1020217014183A patent/KR20210084494A/ko unknown
- 2019-10-21 WO PCT/JP2019/041260 patent/WO2020085281A1/ja unknown
- 2019-10-21 US US17/288,693 patent/US20210395782A1/en active Pending
- 2019-10-21 EP EP19876976.2A patent/EP3872160A4/en active Pending
- 2019-10-21 JP JP2020553380A patent/JP7466199B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009527321A (ja) * | 2006-02-22 | 2009-07-30 | ザ ボード オブ トラスティーズ オブ ザ リーランド スタンフォード ジュニア ユニバーシティ | 薬剤の細胞中へのアバランシェ媒介導入のための方法および装置 |
WO2013129657A1 (ja) | 2012-03-02 | 2013-09-06 | 独立行政法人科学技術振興機構 | 気泡噴出部材及びその製造方法、気液噴出部材及びその製造方法、局所アブレーション装置及び局所アブレーション方法、インジェクション装置及びインジェクション方法、プラズマ気泡噴出部材、並びに治癒装置及び治癒方法 |
WO2016052511A1 (ja) | 2014-09-30 | 2016-04-07 | 国立研究開発法人科学技術振興機構 | 気泡噴出チップ、局所アブレーション装置及び局所アブレーション方法、並びにインジェクション装置及びインジェクション方法 |
WO2017069085A1 (ja) * | 2015-10-19 | 2017-04-27 | 株式会社ベックス | 気泡噴出チップ、局所アブレーション装置及び局所アブレーション方法、並びにインジェクション装置及びインジェクション方法 |
Non-Patent Citations (3)
Title |
---|
See also references of EP3872160A4 |
YOKO YAMANISHI, KEITA ICHIKAWA: "Emerging functions of electrically-induced bubbles", JOURNAL OF THE VISUALIZATION SOCIETY OF JAPAN, vol. 39, no. 154, 1 January 2019 (2019-01-01), pages 8 - 13, XP055810410, ISSN: 0916-4731, DOI: 10.3154/jvs.39.154_8 * |
YUDAI FUKUYAMA , KEITA ICHIKAWA , MASARU YAMASHITA , YOKO YAMANISHI: "Study of electric field-induced bubbles using a dielectric plate with an electric field concentration structure", MICRO / NANO ENGINEERING SYMPOSIUM, vol. 2018.9, 30 October 2018 (2018-10-30), pages 1 - 2, XP009528042, ISSN: 2432-9495, DOI: 10.1299/jsmemnm.2018.9.30am3PN65 * |
Also Published As
Publication number | Publication date |
---|---|
EP3872160A1 (en) | 2021-09-01 |
EP3872160A4 (en) | 2021-12-22 |
JPWO2020085281A1 (ja) | 2021-09-24 |
US20210395782A1 (en) | 2021-12-23 |
KR20210084494A (ko) | 2021-07-07 |
JP7466199B2 (ja) | 2024-04-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11730531B2 (en) | Bubble jetting member and method for producing same, gas/liquid jetting member and method for producing same, localized ablation device and localized ablation method, injection device and injection method, plasma-bubble jetting member, and therapeutic device and therapeutic method | |
JP6385450B2 (ja) | 気泡噴出チップ、局所アブレーション装置及び局所アブレーション方法、並びにインジェクション装置及びインジェクション方法 | |
US10538728B2 (en) | Bubble-jetting member, gas-liquid jetting member, localized ablation device, and localized injection device | |
WO2017069085A1 (ja) | 気泡噴出チップ、局所アブレーション装置及び局所アブレーション方法、並びにインジェクション装置及びインジェクション方法 | |
JP6233919B2 (ja) | タンパク質吸着気泡噴出部材、タンパク質結晶装置及びタンパク質結晶化方法、並びにタンパク質結晶切削装置及びタンパク質結晶切削方法 | |
WO2020085281A1 (ja) | 気泡噴出方法、気泡噴出用デバイス、および、気泡噴出装置 | |
JP7397489B2 (ja) | 気泡噴出方法、電源装置、および、気泡噴出用装置 | |
JP7121419B2 (ja) | 気泡噴出方法、気泡噴出用電源装置、および、気泡噴出装置 | |
JPWO2019078229A1 (ja) | めっき方法、気泡噴出部材、めっき装置、および、デバイス |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19876976 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020553380 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20217014183 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2019876976 Country of ref document: EP Effective date: 20210526 |