A cylindrical waveguide-based twist near-field radiative heat transport modulator and method

Abstract

The application relates to a kind of twist near-field radiation heat transport controller and method based on cylindrical waveguide, belong to the technical field of radiation heat transport regulation.It includes platform, transmitting end, waveguide structure and receiving end, symmetrically arranged transmitting end and receiving end are installed on the platform, and transmitting end and receiving end are matched with waveguide structure.The application can realize active adjustment of non-contact heat transport completely by relying on system structure geometric characteristics without applying any external field (electric field, magnetic field and velocity field);The design has the advantages of large adjustable range, high precision, etc.;The application is based on the low-loss long-range heat transport characteristics of cylindrical waveguide, and an additional transport channel is opened for heat exchange between objects by means of cylindrical surface mode, and the propagation loss is low, which provides technical possibility for non-contact heat regulation between transmitting end and receiving end.

Description

Technical Field

[0001] This invention relates to a controller and method based on cylindrical waveguides, belonging to the field of radiative heat transport control technology. Background Technology

[0002] When the distance between two interacting objects is less than or equal to the characteristic wavelength of thermal emission, photon-mediated radiative heat transport mainly occurs in the near-field region. Due to the excitation of surface evanescent modes (surface plasmon polaritons and surface phonon polaritons) between the interacting objects, near-field radiative heat transfer far exceeds the conventional Planck blackbody radiation limit. In recent years, with the rapid development of micro-nano technology, materials science, and quantum physics, near-field radiative heat transfer has shown potential applications in the energy management of high-power non-contact optoelectronic devices. Furthermore, actively controlling the energy transport process can not only meet the specific heat requirements of the device under different operating conditions, but also help extend its service life, which is a key link in achieving efficient operation of micro-nano devices. However, inventions related to near-field radiative heat control still have technical problems such as poor control performance and small adjustment range. For example, CN106546122A, entitled "A Near-Field Radiation Heat Transfer Regulator and Adjustment Method," describes a near-field heat transfer regulator based on a two-disc structure. It adjusts the relative angle between two interacting disks to regulate heat transfer between them. However, without changing the positions of the two interacting objects, its accuracy and adjustment range are relatively small. Recently, cylindrical waveguides supporting low-loss localized surface modes have attracted widespread attention in electromagnetic and communication engineering fields due to their ability to directionally guide electromagnetic wave propagation. With advancements in micro / nanoscale non-contact heat transport technology and the development of electromagnetic thermal radiation theory, cylindrical waveguide structures have demonstrated significant application potential in actively manipulating electromagnetic energy transfer between objects. CN115289890A, entitled "A Structure for Regulating Near-Field Radiation Heat Transfer Based on Hyperbolic Materials," employs a planar substrate structure, resulting in significant propagation loss.

[0003] Therefore, there is an urgent need to propose a torsional near-field radiation heat transport controller and method based on cylindrical waveguides to solve the above-mentioned technical problems. Summary of the Invention

[0004] To address the aforementioned problems, a torsional near-field radiative heat transport modulator and method based on cylindrical waveguides are provided. A brief overview of the invention is given below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.

[0005] The technical solution of the present invention:

[0006] A torsional near-field radiation heat transport controller based on a cylindrical waveguide includes a platform, a transmitter, a waveguide structure, and a receiver. The platform is equipped with symmetrically arranged transmitters and receivers, and both transmitters and receivers are integrated with the waveguide structure.

[0007] Preferably, the platform and the waveguide structure are rotated relative to each other.

[0008] Preferably, it also includes a substrate device, which is a U-shaped frame, and a waveguide structure is a cylindrical waveguide structure, with both ends of the waveguide structure fixedly connected to the substrate device.

[0009] Preferably, it also includes a fixed structure, a turntable, and a disk. The turntable is a nano-displacement platform, which is horizontally set. The center of the platform is connected to the fixed structure through the turntable, and the fixed structure is fixed in relative position to the base device.

[0010] Preferably, the turntable is cylindrical, and the transmitting end and the receiving end are evenly arranged circumferentially with the axis of the turntable (rotation point O) as the center. That is, the midpoint of the line connecting the transmitting end and the receiving end coincides with the midpoint of the waveguide structure when viewed from above. The turntable is used to adjust the rotation angle α between the line connecting the transmitting end and the receiving end and the waveguide structure.

[0011] Preferably, the transmitter and receiver are located on the same horizontal plane, and the horizontal distance between the transmitter and receiver is adjustable.

[0012] Preferably, the transmitter and receiver can be made of nanoparticles of any isotropic (dielectric and metallic) and / or anisotropic materials, with the nanoparticles having a radius of 5-1000 nm.

[0013] Waveguide structures can be made of any isotropic (dielectric and metallic) and / or anisotropic materials, with radii ranging from 0.01 to 10 μm.

[0014] The entire system is constructed within the framework of point dipole theory. The horizontal distance d and the vertical distance z0 (the shortest distance from the center of the lower part of the transmitter 5 and receiver 9 to the surface of the waveguide structure 6) should both be greater than or equal to four times the radius of the nanoparticle; the range of d and z0 is 20-4000 nm.

[0015] The platform is used to adjust the rotation angle α, thereby actively controlling the radiative heat flow between objects; the range of α is 0-90°.

[0016] Preferably, the platform's drive unit, transmitter, waveguide structure, receiver, hydraulic cylinder, motor, and other adjustable devices are all electrically connected to the control system (a control and signal receiving device for a torsional near-field radiation heat transport regulator based on a cylindrical waveguide) via wires.

[0017] A method for controlling torsional near-field radiative heat transport based on cylindrical waveguides, characterized by employing the aforementioned torsional near-field radiative heat transport controller based on cylindrical waveguides, comprising the following steps:

[0018] By adjusting the relative angle between the line connecting the transmitter and receiver and the axis of the cylindrical waveguide structure, the radiative heat flux between objects can be actively controlled.

[0019] The present invention has the following beneficial effects:

[0020] 1. This invention enables active regulation of non-contact heat transport entirely by relying on the geometric characteristics of the system structure without applying any external field (electric field, magnetic field, and velocity field); the design has the advantages of a large adjustable range and high precision.

[0021] 2. Based on the low-loss long-range thermal transport characteristics of cylindrical waveguides, this invention opens up an additional transport channel for heat exchange between objects by means of cylindrical surface modes, with low propagation loss, which provides a technical possibility for non-contact thermal control between the transmitter and receiver.

[0022] 3. This invention utilizes the characteristic of electromagnetic wave directional propagation in cylindrical waveguides to adjust the interaction between nanoparticles and cylindrical waveguide structures by changing the rotation angle, thereby manipulating the excitation of surface plasmons or surface phonons on the cylindrical surface and achieving active control of the radiative heat transport process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a torsional near-field radiative heat transport modulator based on a cylindrical waveguide according to an embodiment of the present invention;

[0024] In the diagram: 1-fixed structure, 2-turntable, 3-disc, 4-platform, 5-transmitter, 6-waveguide structure, 7-substrate device, 8-wire, 9-receiver, 10-control system.

[0025] Figure 2 The relationship between rotation angle α and radiative thermal conductivity h is given by fixed parameters d = 1 μm, z0 = 50 nm and R = 0.1 μm.

[0026] The three curves respectively represent the cases of silicon carbide (SiC) cylindrical waveguides, gold (Au) cylindrical waveguides, and vacuum cases (without cylindrical waveguides); in the cases described, both the transmitter and receiver are made of SiC material.

[0027] Figure 3 This is the relationship between the horizontal spacing d and the radiative thermal conductivity h of a SiC cylindrical waveguide structure under different rotation angles α with fixed parameters z0 = 50 nm and R = 0.1 μm.

[0028] Figure 4This is the relationship between the horizontal spacing d and the radiative thermal conductivity h of an Au cylindrical waveguide structure under different rotation angles α with fixed parameters z0 = 50 nm and R = 0.1 μm.

[0029] Figure 5 This relates the radius R and radiative thermal conductivity h of a SiC cylindrical waveguide structure with fixed parameters d = 1 μm and z0 = 50 nm.

[0030] Figure 6 It is the functional relationship between the vertical spacing z0 of the SiC cylindrical waveguide structure and the radiative thermal conductivity h under fixed parameters d = 1 μm and R = 0.1 μm.

[0031] Figure 7 This is a schematic diagram of the platform's structure. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0033] Specific implementation method one: Combining Figure 1 Alternatively, 7 describes this embodiment, which is a torsional near-field radiation heat transport controller based on a cylindrical waveguide. It includes a platform 4, a transmitter 5, a waveguide structure 6, and a receiver 9. The transmitter 5 and receiver 9 are symmetrically arranged on the platform 4, and both transmitter 5 and receiver 9 are coupled to the waveguide structure 6. This invention provides a directional heat transport channel controlled by surface plasmons or surface phonons on the cylindrical surface for energy exchange between the transmitter and receiver. A nano-displacement device is used to adjust the excitation of the surface mode of the cylindrical surface, thereby actively controlling the energy exchange process between the transmitter and receiver. This controller can precisely control the near-field interaction between objects, thereby efficiently controlling the heat transport process. This invention has a large heat flow adjustment range and high precision.

[0034] Specific Implementation Method Two: Combining Figure 1 Or 7 describes this embodiment, which is a torsional near-field radiation heat transport controller based on a cylindrical waveguide, wherein the platform 4 and the waveguide structure 6 are rotated relative to each other.

[0035] Specific implementation method three: Combining Figure 1Alternatively, 7 can be used to describe this embodiment. This embodiment of a torsional near-field radiation heat transport modulator based on a cylindrical waveguide further includes a substrate device 7, which is a U-shaped frame. The waveguide structure 6 is a cylindrical waveguide structure, with both ends of the waveguide structure 6 fixedly connected to the substrate device 7, so that the middle part of the waveguide structure 6 is suspended. This can reduce the near-field interaction between the waveguide and the substrate, thereby improving the electromagnetic energy transmission and control capability of the waveguide structure.

[0036] Specific implementation method four: Combination Figure 1 Alternatively, 7 describes this embodiment. This embodiment of a torsional near-field radiative heat transport controller based on a cylindrical waveguide further includes a fixed structure 1, a turntable 2, and a disk 3. The turntable 2 is a nano-displacement platform, and the platform 4 is horizontally positioned. The center of the platform 4 is connected to the fixed structure 1 via the turntable 2. The fixed structure 1 and the substrate device 7 are fixed in relative position. For example, the substrate device 7 is placed on an experimental platform. The lower part of the fixed structure 1 is equipped with the turntable 2, disk 3, and platform 4, which are coaxially connected from top to bottom. The fixed structure 1 and the substrate device 7 are fixedly connected by four evenly arranged circular tubes, so that the transmitting end 5 and the receiving end 9 are located above the waveguide structure 6. Unlike the linkage knob device at the bottom of the substrate, this invention uses a nano-positioning device to change the relative position of the line connecting the transmitting end and the receiving end and the axis of the cylindrical waveguide. This device can achieve more precise control of the radiative heat flow.

[0037] Specific Implementation Method Five: Combining Figure 1 Alternatively, 7 describes this embodiment. In this embodiment, a torsional near-field radiation heat transport controller based on a cylindrical waveguide is provided. The turntable 2 is cylindrical. The transmitting end 5 and the receiving end 9 are evenly arranged circumferentially with the axis (rotation point O) of the turntable 2 as the center. That is, the midpoint of the line connecting the transmitting end 5 and the receiving end 9 coincides with the midpoint of the waveguide structure 6 when viewed from above. The turntable 2 is used to adjust the rotation angle α between the line connecting the transmitting end 5 and the receiving end 9 and the waveguide structure 6.

[0038] Specific Implementation Method Six: Combination Figure 1 Alternatively, 7 describes this embodiment, which is a torsional near-field radiation heat transport controller based on a cylindrical waveguide. The transmitter 5 and receiver 9 are located on the same horizontal plane, and the horizontal distance between the transmitter 5 and receiver 9 is adjustable. Platform 4 is a horizontal displacement platform used to adjust the horizontal distance d between the transmitter 5 and receiver 9. Platform 4 includes a motor, a gear, and two sets of rack assemblies. The motor is bolted to the disk 3, and the center of the gear coincides with the axis of the disk, realizing synchronous reverse motion centered on the disk. The structure is ingenious and the adjustment efficiency is high. The output end of the motor is connected to the gear key. The two sets of rack assemblies are evenly arranged circumferentially around the gear as the axis. The rack assembly includes a rack, a linear slide, and a mounting base. The linear slide is fixedly connected to the disk 3, and one end of the rack is fixedly attached to the mounting base. The rack is slidably connected to the linear slide, and the rack meshes with the gear. The two mounting bases are fixedly connected to the transmitter 5 and receiver 9, respectively.

[0039] Specific implementation method seven: Combining Figure 1 Or 7 describes this embodiment, in which a torsional near-field radiation heat transport modulator based on a cylindrical waveguide is provided, wherein the transmitter 5 and receiver 9 can be made of nanoparticles of any isotropic (dielectric and metallic) and / or anisotropic materials, and the radius of the nanoparticles is 5-1000 nm.

[0040] The waveguide structure 6 can be made of any isotropic (dielectric and metallic) and / or anisotropic material, with a radius of 0.01-10 μm. Unlike hyperbolic material substrates, the cylindrical waveguide used in this invention does not depend on the material properties of the structure itself, and can be applied to any isotropic (dielectric and metallic) and anisotropic materials. It also has advantages such as a wider range of adjustable heat flow and higher precision.

[0041] The entire system is constructed within the framework of point dipole theory. The horizontal distance d and the vertical distance z0 (the shortest distance from the center of the lower part of the transmitter 5 and receiver 9 to the surface of the waveguide structure 6) should both be greater than or equal to four times the radius of the nanoparticle; the range of d and z0 is 20-4000 nm.

[0042] Platform 2 is used to adjust the rotation angle α, thereby actively controlling the radiative heat flow between objects; the range of α is 0-90°; platform 2 can be connected to fixed structure 1 through hydraulic cylinder, and platform 2 controls the rotation angle α and hydraulic cylinder controls the vertical distance z0; the rotation angle α between the line connecting the transmitter 5 and the receiver 9 and the waveguide structure axis is changed, thereby actively controlling the radiative heat flow between objects. Based on the principle of symmetry, the range of rotation angle α is 0-90°, and the mechanical rotation point O is located at the middle position of the line connecting the transmitter and the receiver.

[0043] Specific implementation method eight: Combination Figure 1 Or 7 describes this embodiment. In this embodiment, a torsional near-field radiation heat transport regulator based on cylindrical waveguide is provided. The adjustable devices such as the driving device, transmitting end 5, waveguide structure 6, receiving end 9, hydraulic cylinder, and motor of the platform 4 are all electrically connected to the control system 10 (a control and signal receiving device for a torsional near-field radiation heat transport regulator based on cylindrical waveguide) through the wire 8.

[0044] This invention utilizes a cylindrical waveguide structure to provide a heat transfer channel controlled by electromagnetic surface modes for heat exchange between the transmitter and receiver. This is fundamentally different from planar substrate structures. Compared with planar substrate structures, the cylindrical waveguide structure used in this invention can realize axial directional transport of electromagnetic energy and has the advantage of lower propagation loss. Therefore, for the same material and feature size, the cylindrical waveguide structure has superior heat transport characteristics.

[0045] Specific Implementation Method Nine: Combining Figure 1-7 This embodiment describes a method for controlling near-field radiative heat transport based on cylindrical waveguides. It employs a torsional near-field radiative heat transport controller based on cylindrical waveguides to achieve precise control of non-contact radiative energy transport at the micro / nanoscale. The device for actively controlling cylindrical electromagnetic energy transmission via torsion includes: a transmitter, a receiver, a cylindrical waveguide structure, a nano-displacement device, a top and bottom substrate structure for fixing other devices, and a control and signal receiving device for the entire system. This invention provides a directional heat transport channel controlled by surface plasmons or surface phonons on the cylindrical surface for energy exchange between the transmitter and receiver. The nano-displacement device adjusts the excitation of surface modes on the cylindrical surface, thereby actively controlling the energy exchange process between the transmitter and receiver.

[0046] The bottom U-shaped substrate structure supports the cylindrical waveguide structure with radius R; the top fixing structure is connected to a nano-displacement platform, which can arbitrarily adjust the rotation angle α and vertical distance z0 between the transmitter and receiver and the waveguide structure; while the horizontal displacement platform can be used to adjust the horizontal distance d between the transmitter and receiver; the two platforms are connected by a central disk; in addition, all the adjustable devices are connected to the control system via wires; the use of a U-shaped substrate structure to fix the cylindrical waveguide structure can reduce the near-field interaction between the waveguide and the substrate, thereby improving the electromagnetic energy transmission and control capability of the waveguide structure;

[0047] The transmitter and receiver can be made of nanoparticles of any isotropic (dielectric or metallic) and anisotropic materials; wherein the radius of the particles is 5-1000 nm; in this embodiment, both the transmitter and receiver use SiC nanoparticles with a radius of 5 nm.

[0048] The waveguide structure can be made of any isotropic (dielectric or metallic) and anisotropic materials; wherein the radius is 0.01-10 μm and the length should be much greater than the horizontal distance d between the transmitter and receiver; the present invention demonstrates the thermal modulation characteristics of silicon carbide (SiC) and gold (Au) cylindrical waveguides in the embodiments;

[0049] The horizontal distance d and the vertical distance z0 should be greater than or equal to four times the radius of the nanoparticle; therefore, the range of d and z0 is 20-4000 nm; wherein the horizontal distance d can be adjusted by a horizontal displacement platform, and the vertical distance z0 can be adjusted by a nanoparticle displacement platform;

[0050] This invention designs and employs a U-shaped substrate fixed cylindrical waveguide structure, which can reduce the near-field interaction between the waveguide and the substrate, thereby enhancing the waveguide's energy transmission and control capabilities.

[0051] This invention uses a nano-displacement platform to adjust the position of the upper system and change the rotation angle α between the line connecting the transmitter and receiver and the waveguide structure axis, thereby controlling the radiative heat flow between the objects; wherein, based on the principle of symmetry, the rotation angle α is preferably in the range of 0-90°; the mechanical rotation point O is located at the middle position of the line connecting the transmitter and receiver;

[0052] Figure 2 The figure illustrates the relationship between rotation angle and radiative thermal conductivity h under fixed parameters d = 1 μm, z0 = 50 nm, and R = 0.1 μm. It can be observed from the figure that, compared to the vacuum case, the presence of the cylindrical waveguide allows for the control of heat exchange between objects; when the waveguide material is SiC, the control ratio of heat exchange between the transmitter and receiver (the ratio of the maximum to the minimum value) exceeds four orders of magnitude; this demonstrates the enormous thermal control capability of the SiC cylindrical waveguide structure.

[0053] Figure 3 and Figure 4 The relationship between the horizontal spacing *d* and the radiative thermal conductivity *h* of SiC cylindrical waveguide structures and Au cylindrical waveguide structures under fixed parameters *z0* = 50 nm and *R* = 0.1 μm is shown respectively. For smaller *d*, all cases are numerically equal. As *d* increases, the thermal controllability of the cylindrical waveguide gradually becomes more prominent. This indicates that the controllability of the waveguide is closely related to the horizontal spacing *d* and the waveguide radius *R*. As *d* continues to increase, the cases where *α* is greater than 0° gradually converge, indicating that at larger spacings, the adjustability of heat flow is more sensitive to the rotation angle. Therefore, in the actual fabrication process, the design of cylindrical waveguide structures should comprehensively consider the relationship between the spacing *d* and the radius *R*.

[0054] Figure 5 The relationship between the radius R and the radiative thermal conductivity h of the SiC cylindrical waveguide structure under different rotation angles α is shown. It can be found that as R increases, h basically shows a trend of first increasing and then decreasing. There is an optimal radius for each of the different rotation angles. Therefore, the radius of the waveguide structure is particularly critical to the adjustable performance.

[0055] Figure 6 The relationship between vertical spacing z0 and radiative thermal conductivity of SiC cylindrical waveguide structures at different angles α is shown. As z0 increases, the radiative thermal conductivity h gradually decreases in all cases, but the rate of decrease is different. The larger the α, the slower the rate of decrease. The size of z0 is directly related to the excitation of the near-field surface mode. Therefore, this confirms the possibility of controlling radiative heat transfer between objects by adjusting the cylindrical surface mode.

[0056] A method for controlling near-field radiative heat transport based on cylindrical waveguides includes the following steps: adjusting the relative angle between the line connecting the transmitter and receiver and the axis of the cylindrical waveguide structure to achieve active control of radiative heat flux between objects; in an isolated state, electromagnetic energy transfer between the transmitter 5 and receiver 9 is mediated by photons; utilizing a cylindrical waveguide (waveguide structure 6) to provide a heat transport channel (thermal channel 2) controlled by electromagnetic surface modes for energy exchange between the two, and precisely controlling the interaction between objects by employing nano-displacement devices (turntable 2 and hydraulic cylinder), thereby efficiently controlling the energy transport process between the transmitter 5 and receiver 9; this invention introduces a cylindrical waveguide structure to provide a heat transport channel (thermal channel 2) for the transmitter and receiver 9. The heat exchange between the receiving and receiving ends provides a new heat transport channel, thereby regulating the heat exchange between them, which is fundamentally different from the ideas of existing technologies. Unlike the method of regulating the heat between two interacting disks by adjusting the relative angle between them, this invention achieves heat regulation between the transmitting and receiving ends by adjusting the relative angle between the two interacting particles (the transmitting and receiving ends) and the cylindrical waveguide structure (the third object). Compared with existing technologies, this invention has the advantage of precisely regulating heat without changing the position of the two interacting objects, and in this invention, due to the introduction of the cylindrical waveguide, the adjustable range of the distance between the two objects is also greater.

[0057] This invention provides a torsional near-field radiative heat transport modulator based on a cylindrical waveguide; the modulator can effectively adjust the radiative heat conduction between the transmitter and receiver by means of mechanical torsion, thereby achieving a better radiative heat flow regulation effect.

[0058] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cylindrical waveguide-based twist near-field radiative heat transport regulator, characterized in that: It comprises a platform (4), a transmitting end (5), a waveguide structure (6) and a receiving end (9), the platform (4) is provided with the transmitting end (5) and the receiving end (9), and the transmitting end (5) and the receiving end (9) are matched with the waveguide structure (6); The platform (4) is arranged in opposite rotation with the waveguide structure (6); It also comprises a base device (7), the base device (7) is a U-shaped frame, the waveguide structure (6) is a cylindrical waveguide structure, and the two ends of the waveguide structure (6) are fixedly connected with the base device (7), so that the middle part of the waveguide structure (6) is suspended; It also comprises a fixing structure (1), a rotary table (2) and a disc (3), the rotary table (2) is a nano displacement platform, the platform (4) is horizontally arranged, the fixing structure (1) is fixed in position relative to the base device (7), and the lower part of the fixing structure (1) is sequentially and coaxially connected with the rotary table (2), the disc (3) and the platform (4) from top to bottom; The rotary table (2) is cylindrical, and the transmitting end (5) and the receiving end (9) are uniformly arranged in the circumferential direction with the axis of the rotary table (2) as the center; The transmitting end (5) and the receiving end (9) are located on the same horizontal plane, the horizontal distance between the transmitting end (5) and the receiving end (9) is adjustable, the platform (4) is a horizontal displacement platform and is used for adjusting the horizontal distance d of the transmitting end (5) and the receiving end (9), and the platform (4) comprises a motor, a gear and two groups of rack assemblies; the motor is bolted to the disc (3), the center of the gear is coincident with the axis of the disc, synchronous reverse motion is realized with the disc as the center, the output end of the motor is connected with the gear by a key, the two groups of rack assemblies are uniformly arranged in the circumferential direction with the gear as the axis, and the rack assembly comprises a rack, a linear slide and a mounting seat; the linear slide is fixedly connected with the disc (3), one end of the rack is fixedly provided with the mounting seat, and the rack is slidably connected with the linear slide; the rack is engaged with the gear, and the two mounting seats are fixedly connected with the transmitting end (5) and the receiving end (9) respectively.

2. The cylindrical waveguide based twist near-field radiative heat transport regulator of claim 1, wherein: The transmitting end (5) and the receiving end (9) are made of nano particles of any isotropic or anisotropic material, and the radius of the nano particles is 5-1000 nm; The waveguide structure (6) is made of any isotropic or anisotropic material, and the radius thereof is 0.01-10 µm; The horizontal distance d and the vertical distance z0 are greater than or equal to four times the radius of the nano particles; the range of d and z0 is 20-4000 nm; the vertical distance z0 refers to the shortest distance from the center of the lower part of the transmitting end (5) and the receiving end (9) to the surface of the waveguide structure (6); The platform (2) is used for adjusting the rotation angle α, and the range of α is 0-90°.

3. A cylindrical waveguide based twist near-field radiative heat transport regulator according to claim 2, wherein: The transmitting end (5), the waveguide structure (6), the receiving end (9) and the motor are electrically connected with a control system (10) through wires (8).

4. A method for controlling the near-field radiative heat transfer based on a cylindrical waveguide twist, characterized in that: The twist near-field radiative heat transfer regulator based on the cylindrical waveguide structure according to any one of claims 1-3 comprises the following steps: The relative angle between the connecting line of the transmitting end and the receiving end and the axis of the cylindrical waveguide structure is adjusted, so that the active regulation of the radiative heat flow between objects is realized.

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