TWI501921B - Three dimension graphene-like crystal element - Google Patents

Description

Three-dimensional graphene crystal element

The invention relates to a three-dimensional graphene crystal element, in particular to a piezoelectric material which is formed by using a sputter deposition and a gas-spray deposition technique, including a chain rod and a chain to form a main body. The three-dimensional structure can be used as a technique for the application of the modulation filter element and the oscillator element.

In recent decades, nanomaterials have flourished, and today's hottest subject matter is graphene. Graphene is a planar single-layer film composed of carbon atoms in a hexagonal honeycomb shape. Graphene has always been considered a hypothetical structure and cannot exist alone. In 2004, the physicists Andre Geim and Konstantin Novoselov of the University of Manchester in the United Kingdom used the tape separation method in "The pioneering experiment on two-dimensional graphene materials". Obtaining the Nobel Prize for obtaining a graphite film composed of a single atom [1, 2], since graphene has a relatively small light transmittance and electrical resistivity, the speed of electron running is faster than that of germanium crystal, so it can be used to develop thinner and more conductive. Extremely fast electronic components and photonic components. Scientists have been exposed to graphene since the early 20th century. In 1918, V. Kohlschütter and P. Haenni described the graphite oxide paper in detail (as in Annex 1 [3]), and it has been associated with graphene for several decades. Various studies have been proposed (eg Annex 1 References [4-12]).

In the past three decades, the number of research literature on photonic crystals (such as Annex 1 Reference [13]) and phononic crystals (such as Annex 1 Reference [14-21]) has been increasing. From the theoretical, numerical and experimental analysis, the research team of all countries is most interested in what kind of material collocation or the frequency variation phenomenon caused by the periodic variation in the structure, but it is feasible in the process and has good frequency. A new type of acoustic or optical component was developed under the effect of the trench. For physicists, the behavior of sound waves or light waves under the periodic structure is well known; however, in engineering, the realization of new sound waves, light waves, or the development of their coupling components is subject to continuous research. .

As a main material for piezoelectric oscillators and filters, piezoelectric thin films are most commonly used for zinc oxide (ZnO) and aluminum nitride (AlN). Taking a zinc oxide piezoelectric film as an example, a zinc oxide target is deposited into a piezoelectric film by sputtering, and a zinc oxide powder is deposited into a piezoelectric film by a gas gel spraying system. A number of conventional techniques utilize such deposition methods to grow zinc oxide piezoelectric films. The inventors conducted in-depth research on the graphene structure with the most development potential, made hypothetical graphene structure design, used the three-dimensional finite element method to give periodic boundary setting and analyzed its oscillation behavior, and analyzed the zinc oxide-like graphene cycle. The frequency channel phenomenon of the sexual structure and the trend of the dispersion curve, and thus the results of the present invention are produced.

Since conventional graphene is complicated in manufacturing, the cost is also high. The inventors of the present invention have conceived a graphene-like structure by long-term research in view of the great development potential of graphene. In the research process of the invention, it is analyzed that the piezoelectric material is made into a graphene-like structure by using the existing sputter deposition and gas-spray deposition technology, which has the highest feasibility, can effectively reduce the cost, and is widely used for oscillator components and filtering. Design and manufacture of sensing components, high precision systems and probes.

SUMMARY OF THE INVENTION A primary object of the present invention is to develop a three-dimensional graphene-like crystal element that is widely used in the design and manufacture of oscillator components, filter sensing components, high-precision systems, and probes. The technical means of the present invention is a graphene-like crystal structure composed of a plurality of main enclosures arranged in a regular hexagonal array, which comprises a plurality of main enclosures. The plurality of main enclosures are distributed in a rectangular array on a plane, each main enclosure has a predetermined thickness relative to the plane and is surrounded by a regular hexagon. Each main enclosure includes a plurality of linkages and a plurality of links Each chain is round, each of the links is in the form of a plate, and each chain is round in shape. The plurality of link bars are sequentially located on each side of the regular hexagon, and the plurality of link circles are sequentially located at each corner of the regular hexagon, that is, one end of each two adjacent link bars is connected to each other. A chain of rounded circumferences. Each of the main enclosures has at least two sides that are adjacent to the two adjacent main enclosures. The five consecutive main enclosures with the center point of the same transverse line X and the three consecutive main enclosures of the same longitudinal line Y form a main array, and the hollow center of the main array has a hollow portion. The five main bodies of the main array are communicated to form a three-dimensional graphene crystal structure having a single defect in the center of the main array. The three-dimensional graphene crystal structure formed by the foregoing structure has a large band gap effect, and a plurality of resonance modes are located in the frequency groove, so that it can be applied to an oscillator element, a filter sensing element, and a high-precision system. And probe design And manufactured crystal components.

10,10a‧‧‧main body

11,11a,11b,11c,11d‧‧‧links

12,12a,12b,12c‧‧‧chain circle

20‧‧‧镂空部

31‧‧‧ first parallel line

32‧‧‧second parallel line

33‧‧‧ third parallel line

34‧‧‧Rectangle

X‧‧‧ horizontal line

Y‧‧‧ vertical line

1 is a schematic perspective view of a single defect (natural vibration) of a three-dimensional graphene structure 5N3M according to the present invention.

2 is a schematic perspective view of a single main body of a three-dimensional graphene structure according to the present invention.

3 is a schematic plan view showing a single main body of a three-dimensional graphene structure according to the present invention.

4 is a schematic perspective view of a single defect (real model boundary setting) of a three-dimensional graphene structure 5N3M according to the present invention.

Fig. 5 is a graph showing the cell dispersion of a three-dimensional graphene structure single crystal according to the present invention (0 to 25 MHz).

Figure 6 is a comparison of the three-dimensional graphene structure 5N3M with single crystal cell dispersion curves (16~17.6 MHz).

7 is a three-dimensional graphene structure 5N3N and single crystal cell dispersion curve (1V voltage excitation on the upper surface, grounding) (the horizontal axis is a simple wave vector vector (kx=0~0.5), and the vertical axis is Frequency in MHz).

Figure 8 is a comparison diagram of the single-cavity dispersion curve and frequency response of the superlattice 5N3M of the present invention (16.25~16.3 MHz).

Fig. 9 is a graph showing the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation (point a1).

Figure 10 is a graph showing the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation (point a2).

Figure 11 is a graph showing the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation (point a3).

Figure 12 is a graph showing the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation (point b1).

Figure 13 is a graph showing the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation (point b2).

Figure 14 is a graph showing the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation (point b3).

Annex 1: References.

I. The technical concept of the present invention.

The invention mainly aims to take the infinite periodic phononic crystal into a minimum unit to reflect the translational periodicity and spatial symmetry. The so-called three types of graphene structures of the present invention having single crystal cell defects are prepared by a zinc oxide piezoelectric material in combination with existing mature sputtering deposition and gas gel plating techniques. Using Bloch's theorem and plane wave expansion method, the real space of the equation is expanded into a complex leaf series, so that the band can be reduced into several eigenvalues, and the energy band structure of the phononic crystal is obtained. The three-dimensional graphene crystal structure of the present invention is verified by simulation analysis, and has an ultra-large band gap phononic crystal structure, and a plurality of resonance modes are located in the frequency groove, and can be applied to an oscillator component and a filter sensing component. Crystal components for the design and manufacture of high-precision systems and probes.

II. The basic technical features of the present invention.

Referring to FIGS. 1 to 4, the graphene-like crystal structure proposed by the present invention has a basic technical feature including a plurality of main enclosures 10. The plurality of main enclosures 10 are distributed in a rectangular array on a plane, each of the main enclosures 10 having a predetermined thickness with respect to the plane and surrounding a regular hexagon, each of the main enclosures 10 including a plurality of Each of the link bars 11 and the plurality of link circles 12 each have a plate shape, and each of the link circles 12 has a cylindrical shape (the axis of which is perpendicular to the regular hexagon). The plurality of link bars 11 are sequentially located on each side of the regular hexagon, and the sides of the regular hexagon are respectively located on the central axis of a link bar 11. The plurality of link circles 12 are sequentially located at respective corner points of the regular hexagon, and the corner points of the regular hexagon are respectively located at the center of a chain circle 12. One end of each two adjacent link rods 11 is densely joined to the circumferential surface of a chain circle 12. In a preferred embodiment of the present invention, the plurality of main enclosures 10 are arranged in a plurality of rows along a transverse line X and are arranged in a plurality of columns along a longitudinal line Y, each of the main enclosures 10 along The transverse line X and at least one of the adjacent main enclosures 10 share one of the link bars 11, and the link bars 11 of the opposite sides of each of the main enclosures 10 are parallel to each other. Each of the link bars 11 having two opposite sides of the main body 10 in the inner circumference of the matrix is shared with the main body 10 adjacent to the transverse line X, and the link rod 11 is shared by the main body 10 . Furthermore, at least one of the link circles 12 of the two main body bodies 10 adjacent to the longitudinal line Y is a link rod 11 densely connected. The main five surrounding main body 10 of the same lateral line X and the three consecutive main body 10 of the same longitudinal line Y form a main array, and the main array has at least one along the center The complete regular hexagon removes the formed hollow portion 20, which communicates with the center five of the main arrays 10 of the main array to form a three-dimensional graphene crystal structure having a single defect in the center of the main array.

III. Specific embodiments of the invention.

As shown in FIGS. 1 to 3, the specific structure of the three-dimensional graphene crystal structure of the present invention has a single crystal lattice belonging to a hexagonal structure, that is, a single main enclosure 10 is surrounded by a regular hexagon. In the illustrated example, a plurality of main enclosures 10 are arranged in a plurality of rows along a transverse line X and in a plurality of columns along a longitudinal line Y, each of the main enclosures 10 and along the transverse line X. At least one of the adjacent main enclosures 10 shares one of the link bars 11, and the link bars 11 of the opposite sides of each of the main enclosures 10 are parallel to each other. Each of the link bars 11 having two opposite sides of the main body 10 in the inner circumference of the matrix is shared with the main body 10 adjacent to the transverse line X, and the link rod 11 is shared by the main body 10 . Furthermore, a chain circle 12 of the two main enclosures 10 adjacent to the longitudinal line Y is densely connected by a link rod 11 so that four adjacent to the longitudinal line Y and the transverse line X are adjacent. A main main body 10 surrounded by a regular hexagon is also formed between the main surrounding bodies 10, so that all the main surrounding bodies 10 are in the same size unit cell and arranged in a honeycomb structure. Wherein, the main five surrounding main body 10 with the center point of the same transverse line X and the three consecutive main body 10 of the same longitudinal line Y form a main array, and the central part of the main array has a hollow portion 20. The hollow portion 20 connects the central five surrounding main bodies 10 of the main array to form a three-dimensional graphene crystal structure having a single defect in the center of the main array.

In this embodiment, the hollow portion 20 removes all of the two link circles 12a located at a center point of the main enclosure 10a at a center of the main array on a first parallel line 31, and the center point is Two half of the chain circle 12b on a second parallel line 32, two half of the chain circle 12c with a center point on a third parallel line 33, and the main body 10a are adjacently connected and respectively The link bars 11a of the two parallel links 12a/12b on the first parallel line 31 and the second parallel line 32 are all adjacent to the main body 10a and are respectively located on the first parallel line 31. All of the link rods 11b of the two-chain loops 12a/12c on the third parallel line 33, and the two-chain loops 12b adjacent to the main parallel body 10a and adjacent to the second parallel line 32 The link rod 11c half And the main surrounding body 10a is connected to the half of the connecting rod 11d adjacent to the third parallel line 33, the first parallel line 31, the second parallel line 32, the third parallel line 33 and the The longitudinal lines Y are parallel to each other.

2 and 3 are respectively a perspective and plan view showing the structure of a single main body 10 unit cell (period) in the graphene-like crystal structure (network-like structure) of the present invention shown in FIG. As shown in FIG. 2 and FIG. 3, in the specific embodiment, the main enclosure 10 is surrounded by a regular hexagon, the side of the regular hexagon is 0.2 mm, the radius of the chain circle 12 is 0.075 mm, and the width of the link 11 is 0.02mm.

In the present embodiment, the link rod 11 of the main enclosure 10 adjacent to the hollow portion 20 for connecting the link circle 12a positioned on the first parallel line 31 is removed by half. In the present embodiment, the end face of the link rod 11 that has been removed by half is a plane which is perpendicular to the central axis of the link rod 11. In the specific embodiment, the hollow portion 20 is removed along a rectangle 34.

In the three-dimensional graphene crystal structure of the present invention, the single-layer primary unit cell material is zinc oxide, and the other portions are in a vacuum state except for the crystal structure composed of the main surrounding body 10. Since the zinc oxide material is a piezoelectric material, when a voltage is driven, a piezoelectric effect is generated, and the periodic transfer characteristic is used for infinite transfer of two different materials, and the three-dimensional graphene structure of the present invention can be generated by a piezoelectric effect. Frequency oscillation, and then observe its band gap effect, analyze its feasibility for the design and manufacture of crystal components for oscillator components, filter sensing components, high-precision systems and probes.

IV. Parameter design and frequency channel analysis.

The three-dimensional graphene crystal structure developed by the present invention, in the simulation analysis of the present invention, the regular hexagon surrounded by the main body 10 in the graphene-like crystal structure does have an effect. The specific structure and analysis results of the aforementioned regular hexagon are described in detail below.

As shown in FIG. 4 , a schematic diagram of a single defect of a 5N×3M superlattice of a three-dimensional graphite-like structure according to the present invention is a three-dimensional graphene crystal structure formed by using a zinc oxide piezoelectric material, and the superlattice structure is composed of a single crystal cell. a periodic structure in which the single crystal cell is removed in the middle of the superlattice structure, and the defect is introduced, and the new energy band curve of the defect band is reflected in the defect-free crystal dispersion curve, and the characteristic mode of the defect band is Will be completely confined to the band gap of the defect-free structure. Boundary setting On the upper surface, the 1V electrode is excited and the lower surface is grounded. The Bloch's theorem and the finite element method are used to analyze the frequency channel phenomenon of the phononic crystal.

As shown in FIG. 5, it is a graph of cell dispersion of a three-dimensional graphene structure single crystal according to the present invention, and the range thereof is 0 to 25 MHz. When not applied to any unloaded, three full-frequency groove effects can be found, and the frequency is The range of the groove is 6.236~6.457 MHz, 9.98~10.123 MHz, 16.286~17.254 MHz, the vertical axis is the frequency, the unit is MHz, and the horizontal axis is the simple space vector.

Because the band gap phenomenon of zinc oxide is extremely significant, and the feasibility of current process is high, and the application of zinc oxide to graphene structure is a relatively novel material, which is difficult to achieve in theoretical analysis, so it can be simulated by finite element analysis method. . The invention mainly aims at simulating the frequency channel effect of the three-dimensional graphene structure on the regular hexagonal graphene structure, and temporarily does not consider the influence of the cover electrode.

As shown in FIG. 6, the dispersion curve of the initial unit cell and the superlattice structure of the present invention is not given voltage excitation, wherein the solid circle is a dispersion curve of the superlattice 5N×3M containing a defect structure, and The hollow diamond is the dispersion curve of the initial unit cell, the vertical axis is the observation frequency range of 16~17.6 MHz, and the horizontal axis is the simple wave vector vector Γ-XMY-Γ. From this figure, it can be found that when the superlattice structure is removed, a maximum and minimum boundary value of the frequency channel effect coincides with the position of the frequency groove effect generated by the natural vibration of the initial unit cell. And after introducing the defect structure, one or more eigenvalues are generated in the full frequency groove range, and thus the figure can find that there are more than three defect eigenvalues between 16.29 and 17.25 MHz, and the range is 16.61~16.62 MHz, 16.92~16.93 MHz, 17.19~17.20 MHz.

As shown in FIG. 7 , which is a characteristic curve of a single defect characteristic frequency of a three-dimensional graphene structure according to the present invention, the characteristic mode of the defect band is discussed for a preferred frequency groove range of 15.7 to 17.5 MHz in FIG. 4 . The characteristic modes of the defect structure are limited to the full-frequency groove of the single crystal cell; the range of 1.6279~1.6280 MHz and 1.6554~1.6557 MHz respectively has two values, as in the full-frequency groove range. Any elastic wave can not be transmitted, and the defect characteristic mode corresponding to the frequency elastic wave is confined to the point defect or the line defect propagation, so the phononic crystal defect structure can be applied to the constrained wave transmission and the control wave transmission direction. Inverse Piezoelectric Effect of Piezoelectric Material When a voltage is applied, zinc oxide is deformed by the electrode to produce a stable resonant frequency, and the inverse piezoelectric conversion characteristic is different from the general natural vibration. Figure 7 is a three-dimensional graphene structure The resonance frequency curve (unitcell, supercell) under the excitation of the electrode has a characteristic frequency range of 15.7~17.5 MHz. The solid origin curve is the resonance mode of the initial unit cell subjected to voltage excitation, and the open circle is the superlattice structure. The resonant mode of voltage excitation. Because the defect mode of the phononic crystal containing defects will reflect a new energy band curve in the defect-free crystal, the defect mode of the superlattice structure can be analyzed only for the range of the initial unit cell frequency groove. The change in defect mode is obtained to reduce the time of analysis.

As shown in FIG. 8, it is an energy band structure diagram of a three-dimensional graphene structure defect band under the action of the 1V electrode condition of the present invention. From this figure, it can be found that there are two defect modes in the range of 16.54~16.57 MHz, which are 1.6554 MHz and 1.6556 MHz respectively. From this figure, we can see that the two defect modes are one super-flat band, and there is no characteristic mode in the upper and lower range of the two defect modes, which proves that the elastic wave can be limited to the frequency by using the defect structure. This defect flat band is transmitted as a wave. Figure 8 is a graph showing the excitation dispersion of the graphene-like superlattice periodic structure. As shown in Figure 8, the frequency range is 16.54~16.57 MHz. Two super-flat bands appear, which are 16.554 MHz and 16.556, respectively. MHz. Moreover, there is no characteristic mode in the upper and lower ranges of the two defect modes, and the defect structure can be used to limit the elastic wave wave to the frequency, and the wave band transmission is performed along the defect flat band. The horizontal axis is the reduced space vector Γ-X, and the vertical axis is the wave transmission time frequency in MHz.

Since the piezoelectric material deforms the lattice of the material by voltage loading, the deformation produces a stable resonant frequency. As shown in FIGS. 9 to 11, the upper surface of the defect periodic structure of the present invention is given to the 1V electrode, and the real surface boundary of the lower surface is set to the frequency response diagram after the voltage is applied. Some modes are subject to voltage loading to produce a low impedance resonant frequency, a black solid circle is the low impedance excitation point, the horizontal axis is the admittance (reciprocal of the impedance), and the vertical axis is the frequency in MHz. The electrode excitation diagrams of Figures 9 to 11 correspond to a1, a2, and a3 of Fig. 8 respectively, and the three points are a super-flat band, and the resonant modes of the simple spatial frequency at the super-flat band frequency (1.6554 MHz) are both Consistent. Figure 9 to Figure 11 show the frequency response curve of the graphene superlattice periodic structure subjected to voltage excitation. The sweep frequency range is 16.54~16.57MHz, and the sweep frequency is 1Hz. It can be found that the super-flatband excitation frequency is about 16.55398~16.5540 MHz. It can be seen from the figure that the three-point a1, a2, and a3 have consistent frequency trend curves, which proves that the introduction of the defect structure will produce a super-flat band phenomenon, and no characteristic modes are excited in the upper and lower ranges of the excitation frequency. , the elastic wave is limited to the point defect and cannot be propagated.

As shown in FIGS. 12 to 14, the upper surface of the defect period structure is given to the 1V electrode, and the real surface boundary of the lower surface is set to the frequency response map after the voltage is applied. Some modes are subject to voltage loading to produce a low impedance resonant frequency, a black solid circle is the low impedance excitation point, the horizontal axis is the admittance (reciprocal of the impedance), and the vertical axis is the frequency in MHz. The electrode excitation diagrams of Figures 12 to 14 correspond to the b1, b2, and b3 of Figure 8 respectively. The three points are a super-flat band, and the resonant modes of the simple spatial frequency at the super-flat band frequency (1.6556 MHz) are both Consistent. Figure 12 to Figure 14 show another super-flatband frequency response, and the super-flatband excitation frequency is about 16.55616~16.55617 MHz, and the frequency response of the three simple space vectors is the excitation point, which corresponds to b1 and b2 in Figure 8. , b3 resonance frequency. From the frequency response diagrams of Fig. 9 to Fig. 11 and Fig. 12 to Fig. 14, it is found that the two super-flat band frequency-admittance curves tend to be symmetrical with each other, thereby achieving dynamic balance.

IV. Conclusion.

In the present invention, for the analysis of the frequency channel effect of the hypothetical three-dimensional graphene using the most popular topical graphene, the hexagonal single unit cell is used as a model, and the process technology is more feasible. And the Prague theorem explores the frequency channel effect. Through careful analysis and planning, the dispersion curves and frequency channel effects of different graphene structures are sorted out, and the effect of the regular hexagonal frequency channel is significant.

The above is only one of the possible embodiments of the present invention, and is not intended to limit the scope of the patents of the present invention, and the equivalents of other variations of the contents, the features and the spirit of the following claims. All should be included in the scope of the patent of the present invention. The method and the mechanism of the invention, in addition to the above advantages, are deeply utilized by the industry, can effectively improve the lack of use, and are specifically defined in the scope of the patent application, are not found in the same kind of articles, and therefore have practicality. And progress, has met the requirements of the invention patent, and filed an application according to law. I would like to ask the bureau to approve the patent in accordance with the law to protect the legitimate rights and interests of the applicant.

10,10a‧‧‧main body

11,11a,11b,11c,11d‧‧‧links

12,12a,12b,12c‧‧‧chain circle

20‧‧‧镂空部

31‧‧‧ first parallel line

32‧‧‧second parallel line

33‧‧‧ third parallel line

34‧‧‧Rectangle

X‧‧‧ horizontal line

Y‧‧‧ vertical line

Claims (6)

A three-dimensional graphene crystal element is a graphene-like structure having a single crystal cell defect formed by a zinc oxide piezoelectric material combined with a sputtering deposition technique or a gas gel deposition technique, and the graphene structure includes a plurality of main structures. a plurality of main enclosures distributed in a rectangular array on a plane; each of the main enclosures having a specific thickness relative to the plane and surrounding a regular hexagon, each of the main enclosures including a plurality of link rods and a plurality of chain loops, each of the link rods being in the form of a plate, each of which has a cylindrical shape; the plurality of link rods are sequentially located on each side of the regular hexagon, the positive six The sides of the edge are respectively located on a central axis of the link rod; the plurality of link circles are sequentially located at each corner point of the regular hexagon, and the corner points of the regular hexagon are respectively located at a center of the link circle; One end of each two adjacent connecting rods on the regular hexagon is densely connected to a circumferential surface of the chain circle; the plurality of main surrounding bodies are arranged in a plurality of rows along a transverse line X along a longitudinal line Y is a positive matrix distribution of a plurality of columns, each of the main enclosures being adjacent to the transverse line X One of the main enclosures shares one of the link bars, and the link bars of the two opposite sides of each of the main enclosures are parallel to each other; each of the main enclosures located in the inner circumference of the matrix has two opposite sides The link bar is shared by the two main body adjacent to the transverse line X, and the link bar is adjacent to the longitudinal line Y; at least one of the link circles of the adjacent main body along the longitudinal line Y Connected by a chain link; a continuous array of five main main bodies at the same lateral line X and three consecutive main bodies of the center line at the same longitudinal line Y form a main array, the main The central portion of the array has a hollow portion, the hollow portion communicates with the central five surrounding main body of the main array, and forms a three-dimensional graphene crystal structure having a single defect in the center of the main array, wherein the hollow portion is removed One of the center of the main array, the center of the main body, is located on a first parallel line, and the two points of the chain are all on one second parallel line. Two of the links on the third parallel line are half rounded, the main body is connected adjacently and are respectively located in the a parallel line and two of the second parallel lines of the link circle of the chain, all adjacent to the main body and respectively located on the first parallel line and the third parallel line All of the spliced rods of the circle, the half of the link rod adjacent to the main circumference and adjacent to the second parallel line, and the connecting rod half of the chain circle and the main body are adjacent and co-located in the first Two of the three parallel lines are half of the link rod of the chain, and the first parallel line, the second parallel line, the third parallel line, and the longitudinal line Y are parallel to each other. Request item 1 . The three-dimensional graphene-like crystal element according to claim 1, wherein the link rod of the main surrounding body adjacent to the hollow portion for connecting the chain circle located on the first parallel line is removed by half. The three-dimensional graphene-like crystal element according to claim 2, wherein the end face of the link rod removed by half is a plane which is perpendicular to the central axis of the link rod. The three-dimensional graphene crystal element according to any one of claims 1 to 3, wherein the hollow portion is removed along a rectangle. The three-dimensional graphene crystal element according to any one of claims 1 to 3, wherein the link rod has a width of 0.02 mm, the diameter of the link circle is 0.14 mm, and the length of the side of the regular hexagon is 0.2mm. The three-dimensional graphene crystal element according to claim 1, wherein the thickness of the main body, the thickness of the link rod, and the column height of the chain circle are respectively 0.01 mm.