Three-dimensional colorful metal label and preparation method thereof

Abstract

The invention discloses a three-dimensional colorful metal label, which comprises a metal substrate, a plurality of light-emitting diodes, a plurality of light-emitting diodes, a plurality of light-emitting diodes and a plurality of light-emitting diodes, the three-dimensional images and texts are convexly arranged on the first surface of the metal substrate; the micro-nano image-text is located on the first surface of the metal substrate, an interval is formed between at least two adjacent three-dimensional image-texts, and the micro-nano image-text is arranged at the interval; and the micro-nano image-text area presents a colorful effect. According to the metal label, the mode of combining the three-dimensional structure and the micro-nano structure is adopted, the metal label has the macroscopic touch three-dimensional structure pattern and meanwhile has the physical developing effect of the micro-nano structure, the micro-nano structure enables the metal label to have the characteristics of dynamic light and shadow changing, naked eye three-dimensional performance, light color magical color and the like, and under the light effect when the metal label is combined with the macroscopic three-dimensional structure image, the metal label has the advantages that the effect is good; the signboard pattern is dynamic, three-dimensional, colorful and dazzling, and the unique decoration personality which cannot be realized by a common three-dimensional signboard and identification is endowed.

Description

Technical Field

[0001] The invention relates to the technical field of holography and decoration, and in particular to a three-dimensional colorful metal sign and a preparation method thereof. Background Art

[0002] Three-dimensional metal signs are generally used for badges, nameplates, etc. However, in the prior art, three-dimensional metal signs and logos are normally formed by metal stamping, etching, mechanical finishing, etc. to form three-dimensional and patterned patterns, or mold metallurgical casting, etc. Later, they are colored by printing and spraying, so they have a certain visual color.

[0003] However, the precision of preparing three-dimensional metal signs in the prior art is relatively poor, and all of them are subtractive processes, which easily cause waste of resources and environmental pollution; furthermore, the weight of the metal signs in the prior art is also relatively heavy, and the effect of the three-dimensional metal signs is also single, with only spraying and printing colors, all of which are flat effects and cannot meet diversified needs.

[0004] In summary, there is an urgent need to provide a new design structure and preparation process to solve the technical problems existing in the prior art. Summary of the invention

[0005] Based on this, it is necessary to provide a three-dimensional colorful metal sign and a preparation method thereof to solve the above-mentioned technical problems.

[0006] A technical solution of the present invention is: A three-dimensional colorful metal sign, characterized by comprising: A metal substrate, the metal substrate comprising a first surface and an oppositely disposed second surface; A plurality of three-dimensional images and texts, wherein the three-dimensional images and texts are convexly disposed on the first surface of the metal substrate; Micro-nano graphics and texts are located on the first surface of the metal substrate, wherein there is a gap between at least two adjacent three-dimensional graphics and texts, and the micro-nano graphics and texts are arranged at the gaps; the micro-nano graphics and texts area presents a colorful effect.

[0007] As an improved technical solution of the present invention, it also includes a reflective layer, and the reflective layer covers the three-dimensional graphics and the micro-nano graphics.

[0008] As an improved technical solution of the present invention, it also includes a coloring layer, which at least covers the area where the micro-nano graphics are provided, so that the reflective layer is located between the micro-nano graphics and the coloring layer.

[0009] As an improved technical solution of the present invention, the three-dimensional graphic includes a top and two side walls, the top and the two side walls form an open cavity, and the opening of the cavity faces the second surface of the metal substrate.

[0010] As an improved technical solution of the present invention, a filling layer is provided in the cavity, and the filling layer fills the cavity; or a filling layer is provided on the second surface of the metal substrate, and the filling layer fills the cavity.

[0011] As an improved technical solution of the present invention, it also includes a bonding layer, which is located on the second surface of the metal substrate and is used to bond the carrier to be bonded.

[0012] As an improved technical solution of the present invention, the micro-nano pattern includes a plurality of micro-nano textures, and the micro-nano textures are convexly and / or concavely arranged on the first surface of the metal substrate.

[0013] As an improved technical solution of the present invention, the micro-nano texture is one or a combination of two or more of a microlens, a cylindrical mirror, a CD texture, a Fresnel lens, a brushed texture, and a holographic structure.

[0014] A method for preparing a three-dimensional colorful metal sign, characterized by comprising the following steps: S1. Forming a plurality of three-dimensional graphics and a plurality of micro-nano graphics on a first surface of a metal substrate; the three-dimensional graphics have a cavity on a side facing the second surface of the metal substrate; S2, forming a reflective layer on the surface of the three-dimensional image and the micro-nano image by coating; S3, providing a coloring layer in at least one of the micro-nano image and text regions, so that the reflective layer is located between the micro-nano image and text and the coloring layer; S4, disposing a filling layer on one side of the second surface of the metal substrate, and the filling layer fills the cavity; S5. Disposing an adhesive layer on one side of the second surface of the metal substrate.

[0015] As an improved technical solution of the present invention, the preparation of the three-dimensional image and the micro-nano image in step S1 includes the following steps: S11, preparing a carrier, and arranging micro-nano graphics and three-dimensional graphics on the carrier; S12, providing a conductive layer on the surface of the micro-nano graphics and the three-dimensional graphics in step S11; S13, placing the carrier with the conductive layer in step S12 in an electroplating device to form a metal mold with a mirror image of the structure of the three-dimensional image and the micro-nano image; S14, placing the metal mold in an electroplating device for electroplating to form a metal substrate with three-dimensional graphics and micro-nano graphics.

[0016] As an improved technical solution of the present invention, the method for forming the three-dimensional image in step S11 is to form micro-nano images on the surface of the carrier, and then form the three-dimensional image by UV printing in the preset area of ​​the micro-nano images; or to form micro-nano images on the surface of the carrier, and then form the three-dimensional image by machining or etching in the preset area of ​​the micro-nano images.

[0017] Beneficial effects of the present invention: The three-dimensional colorful metal sign provided by the present application adopts a combination of three-dimensional structure and micro-nano structure, has a macroscopic tactile three-dimensional structure pattern, and has a micro-nano structure physical color rendering effect. The micro-nano structure enables the metal sign to have dynamic light and shadow changes, naked eye three-dimensional, light and color fantasy and other characteristics. Combined with the macroscopic three-dimensional structure image under the action of light, the sign pattern is dynamic and three-dimensional, colorful and eye-catching, giving it a unique decorative personality that ordinary three-dimensional signs and logos cannot achieve. Whether from the technical level of the production process or the aesthetics of the decorative pattern, it is a perfect improvement of ordinary signs and logos. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a three-dimensional colorful metal sign of the present invention; Figure 2 This is another structural schematic diagram of a three-dimensional colorful metal sign of the present invention; Figure 3 This is another structural schematic diagram of a three-dimensional colorful metal sign of the present invention; Figure 4 This is another structural schematic diagram of a three-dimensional colorful metal sign of the present invention; Figure 5 This is another structural schematic diagram of a three-dimensional colorful metal sign of the present invention; Figure 6a~6e The present invention is a schematic flow chart of a method for preparing a three-dimensional colorful metal sign. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described below. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0020] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] A three-dimensional colorful metal sign, the micro-nano structure of the metal sign makes the metal sign have the characteristics of dynamic light and shadow change, naked eye stereo, light color fantasy, etc., combined with the macroscopic three-dimensional structure image under the action of light, the sign pattern is dynamic three-dimensional, dazzling, giving it a unique decorative personality that ordinary three-dimensional signs and logos cannot achieve; characterized in that the metal sign includes: A metal substrate, the metal substrate comprising a first surface and an oppositely disposed second surface; the metal substrate can be formed by electroplating, and the material of the metal substrate can be nickel, copper, nickel alloy, etc., and the specific material to be used can be determined according to different requirements; A plurality of three-dimensional graphics, wherein the three-dimensional graphics are convexly arranged on the first surface of the metal substrate; the three-dimensional graphics located on the first surface of the metal substrate can be formed by electroplating, so that the three-dimensional graphics and the metal substrate are an integrated structure, the three-dimensional graphics are convexly arranged on the first surface of the metal substrate, and have an obvious three-dimensional touch; Micro-nano graphics, the micro-nano graphics are located on the first surface of the metal substrate, wherein there is a gap between at least two adjacent three-dimensional graphics, and the micro-nano graphics are located at the gap; the micro-nano graphics area presents a colorful effect. The micro-nano graphics include a plurality of micro-nano textures, and the micro-nano textures are convexly and / or concavely arranged on the first surface of the metal substrate. The micro-nano texture is a combination of one or more of microlens, cylindrical mirror, CD texture, Fresnel lens, brushed texture, and holographic structure; in this way, the micro-nano texture can present the effect of micro-nano texture, and the effect produced by the micro-nano texture can be dynamic light and shadow changes, naked eye stereo, light and color fantasy and other characteristics. In this way, combined with the touch of three-dimensional graphics, the metal sign has a certain three-dimensional and colorful effect. Of course, the surface of the three-dimensional graphics can also be provided with micro-nano textures, so that the three-dimensional graphics themselves will also have the effect of micro-nano graphics; the micro-nano graphics can also be formed by electroplating, and the micro-nano graphics and the metal substrate are also an integrated structure, so that the three-dimensional graphics, micro-nano graphics and the metal substrate are an integral structure, and the three are integrally formed.

[0023] As an improved technical solution of the present invention, it also includes a reflective layer, which covers the three-dimensional graphics and the micro-nano graphics. The reflective layer can be formed on the surface of the three-dimensional graphics and the micro-nano graphics by evaporation, sputtering, etc., so that the reflective layer can well show the effects of the three-dimensional graphics and the micro-nano graphics. There is a refractive index difference between the reflective layer and the materials of the micro-nano graphics and the three-dimensional graphics, and the reflective layer is formed of a material with a higher refractive index. The refractive index difference between the reflective layer and the materials of the micro-nano graphics and the three-dimensional graphics is not less than 0.2.

[0024] As an improved technical solution of the present invention, it also includes a coloring layer, which at least covers the area where the micro-nano image is provided, so that the reflective layer is located between the micro-nano image and the coloring layer. The coloring layer material can be a colored material, which can improve the color of the metal sign. Of course, the material of the coloring layer has a certain transmittance, only in this way can the effect of the micro-nano image be externalized, and the coloring layer can be set locally, which can achieve the effect of local color change, so that the colors of different areas of the metal sign are differentiated.

[0025] As an improved technical solution of the present invention, the three-dimensional image includes a top and two side walls, and the top and the two side walls form an open cavity, and the opening of the cavity faces the second surface of the metal substrate. The three-dimensional image is actually hollow inside, and the opening of the open cavity formed by the hollow area is located on the second surface of the metal substrate. Of course, the second surface of the metal substrate corresponding to the micro-nano image can be a plane or a non-plane formed by undulations.

[0026] As an improved technical solution of the present invention, a filling layer is provided in the cavity, and the filling layer fills the cavity; or, a filling layer is provided on the second surface of the metal substrate, and the filling layer fills the cavity. In order to ensure the support strength of the three-dimensional graphics, a filling layer can be provided in the cavity, and the filling layer can be a resin, and the filling layer can fill the cavity. No filling layer is provided in other areas of the second surface of the metal substrate except the cavity area. Of course, the filling layer can cover the entire second surface of the metal substrate, and the cavity is still filled with the filling layer.

[0027] As an improved technical solution of the present invention, it also includes a bonding layer, which is located on the second surface of the metal substrate and is used to bond the carrier to be bonded. When the filling layer only fills the cavity, a part of the bonding layer directly contacts the second surface of the metal substrate; when the filling layer covers the entire second surface of the metal substrate, the bonding layer is directly formed on the surface of the filling layer.

[0028] The present application also provides a method for preparing a three-dimensional colorful metal sign, which is characterized by comprising the following steps: S1. Form a plurality of three-dimensional graphics and a plurality of micro-nano graphics on the first surface of a metal substrate; the three-dimensional graphics have a cavity on the side facing the second surface of the metal substrate; the micro-nano graphics include a plurality of micro-nano textures, which are convexly and / or concavely arranged on the first surface of the metal substrate. The micro-nano texture is one or a combination of two or more of a microlens, a cylindrical mirror, a CD texture, a Fresnel lens, a brushed texture, and a holographic structure; S2. Form a reflective layer on the surface of the three-dimensional image and the micro-nano image by coating; there is a refractive index difference between the reflective layer and the material of the micro-nano image and the three-dimensional image, and the reflective layer is formed of a material with a higher refractive index, and the refractive index difference between the reflective layer and the material of the micro-nano image and the three-dimensional image is not less than 0.2; S3. A coloring layer is provided in at least one of the micro-nano graphics and text areas, so that the reflective layer is located between the micro-nano graphics and text and the coloring layer; the coloring layer material can be a colored material, which can improve the color of the metal sign. Of course, the material of the coloring layer has a certain transmittance, and only in this way can the effect of the micro-nano graphics and text be externalized; S4, a filling layer is provided on one side of the second surface of the metal substrate, and the filling layer fills the cavity; the filling layer may be a resin, and the filling layer may fill the cavity, and no filling layer is provided on the second surface of the metal substrate except the cavity area. Of course, the filling layer may cover the entire second surface of the metal substrate, and the cavity is still filled with the filling layer; S5, providing an adhesive layer on one side of the second surface of the metal substrate. The adhesive layer can be provided on the second surface of the metal substrate by spraying, spin coating, etc.

[0029] As an improved technical solution of the present invention, the preparation of the three-dimensional image and the micro-nano image in step S1 includes the following steps: S11, prepare a carrier, and set micro-nano graphics and three-dimensional graphics on the carrier; the carrier can be a PET surface provided with a polymer layer, the polymer layer can be a heat-curing glue or a light-curing glue, the micro-nano graphics can be formed by etching, embossing, etc., and then the three-dimensional graphics are formed by UV printing in the preset area of ​​the micro-nano graphics; or the micro-nano graphics are formed on the surface of the carrier, and then the three-dimensional graphics are formed in the preset area of ​​the micro-nano graphics by machining or etching; S12, a conductive layer is provided on the surface of the micro-nano graphics and the three-dimensional graphics in step S11; in this way, the surface is metallized and conductive, so that a metal mold can be prepared by electroplating; S13, placing the carrier with the conductive layer in step S12 in an electroplating device to form a metal mold that is a mirror image of the structure of the three-dimensional image and the micro-nano image; at this time, the structure of the three-dimensional image and the micro-nano image is a mirror image of the target structure, and this structure is used as a master mold for preparing a metal sign; S14, placing the metal mold in an electroplating device for electroplating to form a metal substrate with three-dimensional graphics and micro-nano graphics. At this time, the metal substrate with three-dimensional graphics and micro-nano graphics is a standard metal sign, and then the final product is formed through steps S2 to S5.

[0030] See also Figure 1 as well as Figure 2 A three-dimensional colorful metal sign, the metal sign includes a metal substrate 10, the metal substrate 10 is metal nickel or nickel alloy, the metal substrate 10 includes a first surface and a second surface, the first surface of the metal substrate 10 is provided with a three-dimensional image 20 and a micro-nano image 30, there is a gap between adjacent three-dimensional images 20, the micro-nano image 30 is located in the gap between the three-dimensional images 20; the micro-nano image 30 includes a plurality of micro-nano textures, the micro-nano texture is one or a combination of two or more of a microlens, a cylindrical mirror, a CD texture, a Fresnel lens, a brushed texture, and a holographic structure. The three-dimensional image 20 includes a top and two side walls, the top and the two side walls form an open cavity, the opening is located on the second surface of the metal substrate 10; a filling layer 40 is provided in the cavity, the filling layer 40 is a polymer, so that it can play a role in strengthening the support of the three-dimensional image 20; from Figure 1It can be seen from the figure that the filling layer 40 only fills the cavity and is not arranged anywhere other than the cavity; Figure 2 As can be seen from the figure, another structure is given, the filling layer 41 not only fills the cavity, but also covers the second surface of the metal substrate 10; Figure 5 A bonding layer 70 may be provided on the second surface of the metal substrate 10. When the filling layer 40 only fills the cavity, a portion of the bonding layer 70 directly contacts the second surface of the metal substrate 10. When the filling layer 41 covers the entire second surface of the metal substrate 10, the bonding layer 70 is directly formed on the surface of the filling layer 41.

[0031] See also Figure 3 as well as Figure 4 , another three-dimensional colorful metal sign, in Figure 2 On the basis of the structure, it also includes a reflective layer 50, the reflective layer 50 covers the three-dimensional image 20 and the micro-nano image 30, the refractive index of the material of the reflective layer 50 is greater than the refractive index of the material forming the three-dimensional image 20 and the micro-nano image 30, and the refractive index difference between the two is not less than 0.2; in order to achieve richer colors, a coloring layer 60 can be set in the area of ​​the micro-nano image 30, and the coloring layer 60 can have a certain color, but the coloring layer 60 needs to have a certain transmittance, so that the effect of the micro-nano image 30 is revealed, and the same combination Figure 5 , Figure 3 as well as Figure 4 In the structure provided in the embodiment, the second surface of the metal substrate 10 can be provided with an adhesive layer 70, so as to facilitate the fixing and use of the metal sign.

[0032] See also Figure 6a~6e , a process flow for preparing the three-dimensional colorful metal sign is given; a carrier is prepared, the carrier includes PET100 and a polymer layer A, the polymer layer A can be a photoresist or a UV glue, a micro-nano image 300 is formed on the surface of the polymer layer A, and then a three-dimensional image 200 is directly printed in a preset area of ​​the micro-nano image 300 by UV printing, and a conductive layer B is formed on the surface of the three-dimensional image 200 and the micro-nano image 300, and the carrier provided with the conductive layer B is placed in an electroplating tank for electroplating to form a three-dimensional image 200 and a three-dimensional image 200' and a metal mold C of the micro-nano image 300' which are mirror images of the three-dimensional image 200 and the micro-nano image 300, and then the metal mold C is placed in the electroplating tank for electroplating to prepare a standard metal sign, and finally the metal mold C is separated to form a Figure 6e The standard metal sign shown includes a metal substrate 10, a three-dimensional graphic 20 and a micro-nano graphic 30; Figure 5Finally, a filling layer 41 and an adhesive layer 70 are arranged on the second surface of the metal substrate 10, a reflective layer 50 is arranged on the surface of the three-dimensional graphics 20 and the micro-nano graphics 30, and a coloring layer 60 is arranged in the area of ​​the micro-nano graphics 30, finally forming a three-dimensional colorful metal sign as a finished product.

[0033] The three-dimensional colorful metal sign provided by the present application adopts a combination of three-dimensional structure and micro-nano structure, has a macroscopic tactile three-dimensional structure pattern, and has a micro-nano structure physical color rendering effect. The micro-nano structure enables the metal sign to have dynamic light and shadow changes, naked eye three-dimensional, light and color fantasy and other characteristics. Combined with the macroscopic three-dimensional structure image under the action of light, the sign pattern is dynamic and three-dimensional, colorful and eye-catching, giving it a unique decorative personality that ordinary three-dimensional signs and logos cannot achieve. Whether from the technical level of the production process or the aesthetics of the decorative pattern, it is a perfect improvement of ordinary signs and logos.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail above in conjunction with the accompanying drawings. In the above description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described above, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed above. In addition, the various technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A three-dimensional colorful metal sign, characterized in that: include: A metal substrate, the metal substrate comprising a first surface and an oppositely disposed second surface; A plurality of three-dimensional graphics and texts, wherein the three-dimensional graphics and texts are convexly disposed on the first surface of the metal substrate; Micro-nano graphics and texts are located on the first surface of the metal substrate, wherein there is a gap between at least two adjacent three-dimensional graphics and texts, and the micro-nano graphics and texts are arranged at the gaps; the micro-nano graphics and texts area presents a colorful effect.

2. A three-dimensional colorful metal sign according to claim 1, characterized in that: It also includes a reflective layer, which covers the three-dimensional graphics and the micro-nano graphics.

3. A three-dimensional colorful metal sign according to claim 2, characterized in that: It also includes a coloring layer, which at least covers the area where the micro-nano graphics are provided, so that the reflective layer is located between the micro-nano graphics and the coloring layer.

4. The three-dimensional colorful metal sign according to claim 1, characterized in that: The three-dimensional graphic includes a top and two side walls, wherein the top and the two side walls form an open cavity, and the opening of the cavity faces the second surface of the metal substrate.

5. The three-dimensional colorful metal sign according to claim 4, characterized in that: A filling layer is provided in the cavity, and the filling layer fills the cavity; or a filling layer is provided on the second surface of the metal substrate, and the filling layer fills the cavity.

6. The three-dimensional colorful metal sign according to claim 5, characterized in that: It also includes a bonding layer, which is located on the second surface of the metal substrate and is used to bond the carrier to be bonded.

7. A three-dimensional colorful metal sign according to any one of claims 1 to 7, characterized in that: The micro-nano pattern includes a plurality of micro-nano textures, and the micro-nano textures are convexly and / or concavely arranged on the first surface of the metal substrate.

8. The three-dimensional colorful metal sign according to claim 7, characterized in that: The micro-nano texture is one or a combination of two or more of a microlens, a cylindrical mirror, a CD texture, a Fresnel lens, a brushed texture, and a holographic structure.

9. A method for preparing a three-dimensional colorful metal sign, characterized in that: The following steps are involved: S1. Forming a plurality of three-dimensional graphics and a plurality of micro-nano graphics on a first surface of a metal substrate; the three-dimensional graphics have a cavity on a side facing the second surface of the metal substrate; S2, forming a reflective layer on the surface of the three-dimensional image and the micro-nano image by coating; S3, providing a coloring layer in at least one of the micro-nano image and text regions, so that the reflective layer is located between the micro-nano image and text and the coloring layer; S4, disposing a filling layer on one side of the second surface of the metal substrate, and the filling layer fills the cavity; S5. Disposing an adhesive layer on one side of the second surface of the metal substrate.

10. A method for preparing a three-dimensional colorful metal sign according to claim 9, characterized in that: The preparation of the three-dimensional image and the micro-nano image in step S1 includes the following steps: S11, preparing a carrier, and arranging micro-nano graphics and three-dimensional graphics on the carrier; S12, providing a conductive layer on the surface of the micro-nano graphics and the three-dimensional graphics in step S11; S13, placing the carrier with the conductive layer in step S12 in an electroplating device to form a metal mold with a mirror image of the structure of the three-dimensional image and the micro-nano image; S14, placing the metal mold in an electroplating device for electroplating to form a metal substrate with three-dimensional graphics and micro-nano graphics.

11. A method for preparing a three-dimensional colorful metal sign according to claim 10, characterized in that: The method for forming the three-dimensional image in step S11 is to form micro-nano images on the surface of the carrier, and then form the three-dimensional image in the preset area of ​​the micro-nano images by UV printing; or to form micro-nano images on the surface of the carrier, and then form the three-dimensional image in the preset area of ​​the micro-nano images by machining or etching.

Images