Device for assisting optical fiber water bath method to grow zinc oxide nanorod array

Abstract

The utility model relates to a device for assisting in growing a zinc oxide nanorod array by an optical fiber water bath method, which belongs to the technical field of optical fiber gas sensors and comprises a container and a carrier component connected to the container, the carrier component comprises a first plate body and an opening horizontally lapped to the container, and a second plate body is connected to the inside of the container. The supporting piece is arranged between the first plate body and the second plate body, the fiber groove is arranged on the first plate body and the second plate body in a penetrating mode, the two ends of the optical fiber can be fixed to the first plate body and the second plate body, and the carrier assembly is directly placed into a container in the preparation process so that the optical fiber can be suspended in the container. The optical fiber is prevented from being damaged in the preparation process, the zinc oxide nanorod array grows on the optical fiber through the water bath method, the carrier assembly is directly taken out of the container after the zinc oxide nanorod array grows, the optical fiber does not need to be transferred through a clamping tool, and the convenience of growing the zinc oxide nanorod array through the water bath method is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber gas sensors, and particularly relates to a device for assisting optical fiber water bath method in growing zinc oxide nanorod arrays. Background Art

[0002] Fiber optic gas sensors usually use optical fibers as carriers and integrate zinc oxide nanomaterials on the surface of optical fibers to detect gases.

[0003] The main methods for preparing zinc oxide nanofilms on optical fiber surfaces include coating, drop casting, and sputtering. Coating involves first preparing zinc oxide nanopowder, then adding a volatile solvent such as isopropyl alcohol or ethanol to form a slurry, and then coating or impregnating the slurry on the optical fiber surface. Drop casting involves using a pipette to deposit a zinc oxide nanorod precursor solution on the optical fiber surface. Sputtering involves using a radio frequency magnetron sputtering device to coat a zinc oxide nanorod film on the optical fiber surface. These methods are suitable for preparation on the surface of planar block structures. As optical fibers are cylindrical linear structures, the adhesion between zinc oxide nanomaterials and optical fibers is poor. As a result, when the optical fiber is subjected to mechanical external forces such as squeezing, bending, and friction, the zinc oxide nanomaterial will fall off, seriously affecting the service life and gas-sensing performance of the optical fiber gas sensor.

[0004] Studies have shown that adding a transition layer between the optical fiber and the gas-sensitive material can better solve the problem of weak film adhesion. A layer of zinc oxide seeds is first grown on the surface of the optical fiber as a transition by the water bath method, and then the dried optical fiber is placed in a seed solution containing zinc oxide nanoparticles, so that a layer of zinc oxide nanorod array with high firmness grows on the surface of the optical fiber. Due to the brittleness of the optical fiber itself, and the need to remove the cladding, etch, clean and other treatments before preparation, the mechanical stability of the optical fiber is poor, and it is easy to be damaged during the preparation process, resulting in poor stability in the preparation of the optical fiber gas sensor. In the prior art, a loading mold is used to fix the two ends of the optical fiber, and then a clamping tool is used to place the loading mold and the optical fiber into the solution in the container and remove it from the solution after the preparation is completed. However, when the clamping tool is used to remove the loading mold from the solution, the clamping tool is likely to touch the optical fiber, causing the zinc oxide nanofilm on the surface of the optical fiber to fall off or even the optical fiber to be damaged and broken, reducing the convenience of growing the zinc oxide nanorod array by the water bath method. Utility Model Content

[0005] In view of this, the utility model provides a device for assisting the optical fiber water bath method in growing zinc oxide nanorod arrays, which can avoid damage to the optical fiber during the preparation process. At the same time, there is no need to use a clamping tool to transfer the optical fiber, thereby improving the convenience of growing zinc oxide nanorod arrays by the water bath method, so as to solve the shortcomings of the existing technology.

[0006] The technical solution of the utility model is: a device for assisting the optical fiber water bath method to grow zinc oxide nanorod arrays, comprising a container and a carrier assembly connected to the container, wherein the carrier assembly comprises a first plate body horizontally overlapped on the mouth of the container, a second plate body connected to the interior of the container, the second plate body parallel to the first plate body, a support member is arranged between the first plate body and the second plate body, one end of the support member is connected to the first plate body, and the other end is connected to the second plate body, fiber grooves are respectively penetrated on the first plate body and the second plate body, the fiber grooves on the first plate body and the second plate body are coaxially arranged in a one-to-one correspondence, the two ends of the optical fiber respectively pass through the corresponding fiber grooves on the first plate body and the second plate body, the optical fiber abuts against the inner wall of the fiber groove, and the optical fiber is fixedly supported by the first plate body and the second plate body.

[0007] Preferably, there are a plurality of support members, and the plurality of support members are arranged around and between the first plate body and the second plate body at equal intervals, and the fiber groove is located on the inner side of the plurality of support members.

[0008] Preferably, there are a plurality of fiber grooves on the first plate body and the second plate body, and the fiber grooves on the first plate body and the second plate body are arranged around with equal intervals.

[0009] Preferably, the carrier assembly further comprises: an annular member, which is vertically connected to a side of the first plate body close to the second plate body, the outer side of the annular member abuts against the inner wall of the container mouth, and the support member is located on the inner side of the annular member.

[0010] Preferably, the first plate body, the second plate body, the annular member and the supporting member are made of acrylic.

[0011] Preferably, the first plate body and the second plate body are respectively provided with through holes, the fiber groove passes through the through holes and is fixedly connected thereto, and both ends of the fiber groove extend out of the through holes.

[0012] Preferably, a gap is left between an end of the fiber groove on the second plate body away from the first plate body and the inner bottom of the container.

[0013] Preferably, the fiber groove and the first plate are perpendicular to each other.

[0014] Preferably, the fiber groove is made of thermoplastic polyester elastic block copolymer.

[0015] Preferably, the cross section of the first plate body is circular, and the outer diameter of the first plate body is larger than the inner diameter of the container mouth.

[0016] Compared with the prior art, the present invention provides a device for assisting the optical fiber water bath method in growing zinc oxide nanorod arrays. By using the first plate body, the second plate body, the support member and the fiber groove of the carrier assembly in combination, the two ends of the optical fiber can be fixed on the first plate body and the second plate body, thereby achieving fixed support for the optical fiber. During preparation, the carrier assembly is directly placed in the container so that the optical fiber can be suspended inside the container, thereby avoiding damage to the optical fiber during the preparation process, thereby achieving the optical fiber using the water bath method to grow the zinc oxide nanorod array. After the growth of the zinc oxide nanorod array is completed, the carrier assembly is directly taken out of the container, thereby ensuring the stability of the optical fiber gas sensor preparation. At the same time, there is no need to transfer the optical fiber with the help of a clamping tool, thereby improving the convenience of growing the zinc oxide nanorod array by the water bath method. The auxiliary device of the present invention is easy to use, has good protection effect, is highly practical, and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 It is a top view of the utility model;

[0020] Figure 4 It is a side view of the utility model;

[0021] Figure 5 This is a schematic diagram of the utility model after fixing the optical fiber;

[0022] Figure 6 This is a schematic diagram of the utility model being placed into a wide-mouth bottle;

[0023] Figure 7 This is a schematic diagram of the utility model being placed on a beaker. DETAILED DESCRIPTION

[0024] The utility model provides a device for assisting the optical fiber water bath method to grow zinc oxide nanorod arrays. Figures 1 to 7 The utility model is described with reference to the structural diagram of FIG.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] The main methods for preparing zinc oxide nanofilms on optical fiber surfaces include coating, drop casting, and sputtering. Coating involves first preparing zinc oxide nanopowder, then adding a volatile solvent such as isopropyl alcohol or ethanol to form a slurry, and then coating or impregnating the slurry on the optical fiber surface. Drop casting involves using a pipette to deposit a zinc oxide nanorod precursor solution on the optical fiber surface. Sputtering involves using a radio frequency magnetron sputtering device to coat a zinc oxide nanorod film on the optical fiber surface. These methods are suitable for preparation on the surface of planar block structures. As optical fibers are cylindrical linear structures, the adhesion between zinc oxide nanomaterials and optical fibers is poor. As a result, when the optical fiber is subjected to mechanical external forces such as squeezing, bending, and friction, the zinc oxide nanomaterial will fall off, seriously affecting the service life and gas-sensing performance of the optical fiber gas sensor.

[0027] Studies have shown that adding a transition layer between the optical fiber and the gas-sensitive material can better solve the problem of weak film adhesion. A layer of zinc oxide seeds is first grown on the surface of the optical fiber as a transition by the water bath method, and then the dried optical fiber is placed in a seed solution containing zinc oxide nanoparticles, so that a layer of zinc oxide nanorod array with high firmness grows on the surface of the optical fiber. Due to the brittleness of the optical fiber itself, and the need to remove the cladding, etch, clean and other treatments before preparation, the mechanical stability of the optical fiber is poor, and it is easy to be damaged during the preparation process, resulting in poor stability in the preparation of the optical fiber gas sensor. In the prior art, a loading mold is used to fix the two ends of the optical fiber, and then a clamping tool is used to place the loading mold and the optical fiber into the solution in the container and remove it from the solution after the preparation is completed. However, when the clamping tool is used to remove the loading mold from the solution, the clamping tool is likely to touch the optical fiber, causing the zinc oxide nanofilm on the surface of the optical fiber to fall off or even the optical fiber to be damaged and broken, reducing the convenience of growing the zinc oxide nanorod array by the water bath method.

[0028] For example, patent publication number CN204981128U discloses a loading mold for assisting in the preparation of zinc oxide nanowires grown on optical fibers. By fixing the two ends of the optical fiber in first grooves at both ends of the loading mold, and providing a second groove in the middle of the loading mold to leave space for the zinc oxide nanowires grown on the optical fiber, the loading mold can prevent damage to the optical fiber. However, when removing the loading mold from the solution bottle, tweezers are required. When using tweezers to clamp it, it is easy to touch the optical fiber or drop it due to unstable clamping, causing the zinc oxide nanowires on the optical fiber surface to fall off or even break the optical fiber, making the operation of growing zinc oxide nanorod arrays by the water bath method extremely inconvenient.

[0029] As shown in the figure, Figure 1 This is a stereoscopic diagram of this embodiment, an apparatus for assisting the optical fiber water bath method for growing zinc oxide nanorod arrays includes a container 6 and a carrier assembly connected to the container 6, wherein the carrier assembly includes a first plate 1 horizontally overlapped at the mouth of the container 6, a second plate 2 connected to the interior of the container 6, the second plate 2 is parallel to the first plate 1, a support member 5 is arranged between the first plate 1 and the second plate 2, one end of the support member 5 is connected to the first plate 1, and the other end is connected to the second plate 2, fiber grooves 3 are respectively provided on the first plate 1 and the second plate 2, and the fiber grooves 3 on the first plate 1 and the second plate 2 are coaxially arranged in a one-to-one correspondence to ensure that the fiber grooves 3 on the first plate 1 and the second plate 2 can be aligned up and down, and the two ends of the optical fiber pass through the corresponding fiber grooves 3 on the first plate 1 and the second plate 2 respectively, and the optical fiber abuts against the inner wall of the fiber groove 3, so that the optical fiber can be placed flatly and fixed therein, and the optical fiber is fixedly supported by the first plate 1 and the second plate 2.

[0030] The size of the device can be designed as needed, and the sizes of the first plate and the second plate can be designed according to the actual container 6. The length of the second plate 2 should be smaller than the inner diameter of the mouth of the container 6, so that the second plate 2 can enter the interior of the container 6. The length of the first plate 1 should be larger than the inner diameter of the mouth of the container 6, so that the first plate 1 cannot enter the interior of the container 6. The distance between the two panels should be smaller than the height of the container 6 to prevent the optical fiber from contacting the bottom of the container.

[0031] In this embodiment, an optical fiber with a length greater than the distance between the two corresponding fiber grooves of the first plate 1 and the second plate 2 is selected. The optical fiber is clamped by tweezers and passes straight through the corresponding two fiber grooves. The inner diameter of the fiber groove 3 is the same as the outer diameter of the optical fiber, which can stably fix the optical fiber. The optical fiber can be loaded and fixed in the auxiliary device, and the end of the device close to the second plate 2 is slowly and vertically inserted into the container 6. The container 6 is pre-filled with a seed solution containing zinc oxide nanoparticles. The first plate 1 is placed at the mouth of the container 6 and abuts against it, so that the optical fiber is stably suspended inside the container 6 to avoid damage to the optical fiber during the preparation process. The optical fiber can grow a zinc oxide nanorod array using the water bath method. After the growth of the zinc oxide nanorod array is completed, the carrier assembly is directly taken out of the container in the vertical direction, thereby improving the efficiency and speed of the optical fiber transfer process, ensuring the stability of the optical fiber gas sensor preparation, and at the same time, there is no need to use a clamping tool to transfer the optical fiber, which improves the convenience of growing the zinc oxide nanorod array by the water bath method.

[0032] After the optical fiber is fixedly loaded and fixed on the device, the end of the device close to the second plate 2 needs to be inserted into the container. After the growth of the zinc oxide nanorod array is completed, the optical fiber connected to the device needs to be taken out of the container. It is necessary to avoid damage to the device when entering or removing from the container.

[0033] Based on this, an improved method is proposed in this embodiment. Preferably, there are multiple support members 5, and the multiple support members 5 are evenly spaced and arranged around the first plate body 1 and the second plate body 2, and the fiber groove 3 is located on the inner side of the multiple support members 5.

[0034] In this embodiment, the fiber groove 3 is arranged on the inner side of the multiple support members 5, which can prevent the optical fiber from touching the inner wall of the water bath container during the water bath and from touching other objects when the device is transferred, thereby protecting the optical fiber from damage and ensuring the stability of the optical fiber gas sensor preparation.

[0035] During use of the device, it is necessary to maintain an appropriate distance between adjacent optical fibers between the first plate 1 and the second plate 2 to avoid the zinc oxide precipitate being unable to sink smoothly to the bottom due to the adjacent optical fibers being too close.

[0036] To this end, this embodiment proposes a solution. Preferably, there are multiple fiber grooves 3 on the first plate body 1 and the second plate body 2, and the fiber grooves 3 on the first plate body 1 and the second plate body 2 are arranged around each other at equal intervals.

[0037] In this embodiment, a plurality of fiber grooves 3 are provided around each other so that adjacent optical fibers maintain a suitable distance.

[0038] When using the device, it is necessary to prevent the device from shaking after being inserted into the container, which may cause damage to the optical fiber.

[0039] To this end, this embodiment proposes a solution. Preferably, the carrier assembly also includes: a ring member 4, which is vertically connected to the side of the first plate body 1 close to the second plate body 2, the outer side of the ring member 4 abuts the inner wall of the mouth of the container 6, and the support member 5 is located on the inner side of the ring member 4.

[0040] In this embodiment, the ring member 4 is appropriately sized according to the inner diameter of the mouth of the container 6 so that the ring member 4 fits snugly in the mouth of the container, preventing the device from shaking on the water bath container and further improving the stability of the fiber gas sensor preparation.

[0041] As a further optimization solution, in the embodiment of the present disclosure, preferably, the first plate body 1, the second plate body 2, the annular member 4 and the supporting member 5 are made of acrylic.

[0042] Acrylic, a material used in this embodiment, exhibits excellent processing properties, high surface hardness, gloss, and high-temperature resistance, as well as excellent wear resistance, stability, and resistance to corrosion from various chemicals. This material is highly suitable for manufacturing the device. The first plate 1, second plate 2, annular member 4, and support member 5 are bonded together using a specialized acrylic adhesive. This acrylic adhesive, primarily composed of chloroform, offers high bonding strength, excellent resistance to high temperatures and humidity, fast curing, and features ring resistance, no whitening, and excellent flexibility. It is highly effective for bonding acrylic materials.

[0043] In the existing technology, when the length of the optical fiber is greater than the length of the mold, the mold is mostly placed at an angle in a container to grow zinc oxide nanorods. The end of the optical fiber directly contacts the inner wall of the container, which can easily cause the optical fiber to be subjected to external mechanical forces and cause the zinc oxide nanorods on the surface to fall off, resulting in poor service life and gas-sensing performance of the optical fiber gas sensor.

[0044] To this end, this embodiment proposes a solution, as shown in the figure. Figure 2 This is a front view of the embodiment, Figure 3 This is a top view of this embodiment. Preferably, through holes are respectively opened on the first plate body 1 and the second plate body 2. The fiber slot 3 passes through the through holes and is fixedly connected thereto. Both ends of the fiber slot 3 extend out of the through holes.

[0045] In this embodiment, the through holes on the first plate 1 and the second plate 2 are used in conjunction with the fiber groove 3. A fiber groove 3 of appropriate length can be selected according to the length of the optical fiber to prevent the optical fiber end from directly contacting the inner wall of the container.

[0046] As a further optimization solution, in the embodiment of the present disclosure, preferably, a gap is left between the end of the fiber groove 3 on the second plate body 2 away from the first plate body 1 and the inner bottom of the container 6 .

[0047] In this embodiment, the gap left between the end of the fiber groove 3 on the second plate 2 away from the first plate 1 and the inner bottom of the container 6 allows the device carrying the optical fiber to be suspended in the container as a whole, further avoiding direct contact between the end of the optical fiber and the inner wall of the container, thereby improving the stability of the prepared optical fiber gas sensor.

[0048] When using this device to assist in the growth of zinc oxide nanorod arrays on the surface of an optical fiber, a seed solution containing zinc oxide nanoparticles will naturally generate zinc oxide precipitates when heated in a water bath. It is necessary to prevent the zinc oxide precipitates from falling on the optical fiber, which would cause uneven growth of the zinc oxide nanorods on the surface of the optical fiber. In most existing technologies, the optical fiber is loaded at an angle, which can prevent large particles of zinc oxide precipitates from falling on the optical fiber when sinking to the bottom. However, small zinc oxide particles suspended in the solution are easy to adhere to the side above the tilted optical fiber, which will still cause uneven growth of zinc oxide nanowires on the optical fiber surface.

[0049] To this end, this embodiment proposes a solution. Preferably, the fiber groove 3 and the first plate body 1 are perpendicular to each other.

[0050] In this embodiment, the fiber groove 3 and the first plate 1 are perpendicular to each other, so that the optical fiber is vertically suspended in the water bath solution to grow zinc oxide nanorods. This not only avoids blocking large particles of zinc oxide from settling on the optical fiber when sinking to the bottom, but also prevents small particles of zinc oxide suspended in the solution from adhering to the surface of the optical fiber, greatly improving the uniformity of the growth of zinc oxide nanorods on the optical fiber surface.

[0051] As a further optimization solution, in the embodiment of the present disclosure, preferably, the material of the fiber groove is thermoplastic polyester elastic block copolymer.

[0052] In the embodiment of the present disclosure, the fiber groove 3 is made of thermoplastic polyester elastic block copolymer material. The fiber groove 3 serves as an optical fiber protection hollow tube, which can not only fix the bare optical fiber, but also has high heat resistance, chemical corrosion resistance and wear resistance, and has good fiber threading performance.

[0053] As shown in the figure, Figure 4 This is a side view of this embodiment. Preferably, the cross section of the first plate body 1 is circular, and the outer diameter of the first plate body 1 is larger than the inner diameter of the mouth of the container 6.

[0054] In this embodiment, the first plate 1 with a circular cross-section not only facilitates the placement and removal of the device into and out of the container, but also acts as a lid to prevent the volatilization of the water bath liquid. Therefore, the step of sealing the water bath container can be omitted, and the device can be directly taken and transferred, which increases the convenience of experimental operation.

[0055] The device is further described below through a specific embodiment. The optical fiber used in this embodiment is the most common multi-mode 62.5 / 125μm bare optical fiber. The first plate 1 and the second plate 2 in the device are circular plates. The diameter of the first plate 1 is 60mm and the thickness is 2mm; the diameter of the second plate 2 is 35mm and the thickness is 2mm; the outer diameter of the ring member 4 is 40mm, the inner diameter is 33mm, and the height is 5mm; the height of the support member 5 is 75mm, and the end face radius is 2mm; the inner diameter of the fiber groove is 125μm, the outer diameter is 2mm, and the length is 10mm.

[0056] As shown in the figure, Figure 6 This is a diagram of the device being placed in a wide-mouth bottle. A wide-mouth bottle with a capacity of 125ml is used to store the seed solution. The inner diameter of the bottle mouth is 40mm, the outer diameter of the bottle bottom is 55mm, and the height is 100mm. The growth container used in the water bath is a 100ml tall beaker with an opening diameter of 55mm and a height of 92mm. In addition, container 6 can also be a beaker. Figure 7 A schematic diagram of the device placed on a beaker.

[0057] Immerse the target position of the optical fiber segment where the zinc oxide nanorod array is to be grown in acetone for about 15 minutes, and then remove the plastic cladding after it has dissolved and expanded. Immerse the optical fiber segment without the cladding in hydrofluoric acid for etching for 30 minutes, and then ultrasonically clean the optical fiber segment with ethanol and deionized water. Due to the influence of etching, the surface of the optical fiber core is slightly rough, which will improve the surface adhesion and facilitate the subsequent deposition of zinc oxide particles. Figure 5 As shown, the optical fiber is loaded into the auxiliary device, and the connected device and the optical fiber are placed in an oven for drying for 30 minutes.

[0058] Weigh 0.2195g of zinc acetate dihydrate and add 80ml of anhydrous ethanol. Stir vigorously at 50°C for 30 minutes to form a 0.0125mol / L zinc acetate ethanol solution. Cool this solution to room temperature for 30 minutes and dilute it to 0.0014mol / L with anhydrous ethanol. Weigh 0.08g of NaOH pellets and add 100ml of anhydrous ethanol. Stir vigorously at 50°C for 30 minutes to form a 0.02mol / L NaOH solution. Cool it to room temperature for 30 minutes and dilute it to 0.0057mol / L with anhydrous ethanol. Heat the two diluted solutions separately to 65°C, then mix them in a large beaker, maintain the temperature at 65°C, and stir vigorously for 30 minutes. After stopping stirring and heating, quickly cool the mixture in ice water to prevent excessive growth of the nano-zinc oxide grains. The resulting solution is the seed solution containing zinc oxide nanoparticles and is colorless and transparent.

[0059] The device loaded with the dried optical fiber was directly immersed in the zinc oxide nanocrystal seed suspension solution for 30 seconds and then taken out. It was then placed in an oven at 80°C for curing for 30 minutes and cooled at room temperature for 30 minutes. The above process was repeated three times to grow a layer of zinc oxide seed layer on the surface of the optical fiber.

[0060] Dissolve 1.75g ​​of hexamethylenetetramine in 500ml of deionized water and stir for 30 minutes. Once completely dissolved, add 3.71g of zinc nitrate and stir for 30 minutes to obtain the final water bath solution. Place the fiber-attached device with the prepared zinc oxide seed layer into a beaker containing the prepared solution. The beaker is then placed in a water bath heated to 80°C. The turbidity of the water bath solution indicates the beginning of zinc oxide growth. After 4 hours in the water bath, remove the fiber from the water bath solution, rinse the sample with deionized water for 5 minutes, and then anneal the fiber in an 80°C oven for 6 hours. Finally, a strong and uniform zinc oxide nanorod array is prepared on the fiber surface.

[0061] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A device for assisting the optical fiber water bath method in growing zinc oxide nanorod arrays, characterized in that: include: A container (6) and a carrier assembly connected to the container (6), wherein the carrier assembly comprises: A first plate (1) is horizontally overlapped with the mouth of the container (6); A second plate (2) is connected to the interior of the container (6), and the second plate (2) is parallel to the first plate (1); A support member (5) is arranged between the first plate body (1) and the second plate body (2), one end of the support member (5) is connected to the first plate body (1), and the other end is connected to the second plate body (2); The fiber grooves (3) are respectively provided on the first plate (1) and the second plate (2); the fiber grooves (3) on the first plate (1) and the second plate (2) are coaxially arranged in a one-to-one correspondence; the two ends of the optical fiber respectively pass through the corresponding fiber grooves (3) on the first plate (1) and the second plate (2); the optical fiber abuts against the inner wall of the fiber groove (3); and the optical fiber is fixedly supported by the first plate (1) and the second plate (2).

2. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 1, characterized in that: There are a plurality of support members (5), and the plurality of support members (5) are arranged around and at equal intervals between the first plate body (1) and the second plate body (2), and the fiber groove (3) is located on the inner side of the plurality of support members (5).

3. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 2, characterized in that: There are a plurality of fiber grooves (3) on the first plate body (1) and the second plate body (2), and the fiber grooves (3) on the first plate body (1) and the second plate body (2) are arranged at equal intervals around each other.

4. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 1, characterized in that: The carrier assembly further comprises: an annular member (4), the annular member (4) being vertically connected to a side of the first plate body (1) close to the second plate body (2), the outer side of the annular member (4) being in contact with the inner wall of the mouth of the container (6), and the support member (5) being located on the inner side of the annular member (4).

5. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 4, characterized in that: The first plate body (1), the second plate body (2), the annular member (4) and the supporting member (5) are made of acrylic.

6. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 1, characterized in that: The first plate body (1) and the second plate body (2) are respectively provided with through holes, the fiber slot (3) passes through the through holes and is fixedly connected thereto, and both ends of the fiber slot (3) extend out of the through holes.

7. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 6, characterized in that: A gap is left between the end of the fiber groove (3) on the second plate body (2) away from the first plate body (1) and the inner bottom of the container (6).

8. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 1, characterized in that: The fiber groove (3) and the first plate body (1) are perpendicular to each other.

9. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 1, characterized in that: The fiber groove is made of thermoplastic polyester elastic block copolymer.

10. The device for growing zinc oxide nanorod arrays by auxiliary optical fiber water bath method according to claim 1, characterized in that: The cross section of the first plate body (1) is circular, and the outer diameter of the first plate body (1) is larger than the inner diameter of the mouth of the container (6).

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