KR20180002338A - Metamaterial and Device for Blocking of Thermal and Sound Waves - Google Patents

Abstract

The present invention relates to a metamaterial for blocking heat and sound waves and to a device using the same, and specifically, to a metamaterial for blocking heat and sound waves by disposing a plurality of mediums by considering a volume elastic modulus of each medium, and to a device using the same. According to an embodiment of the present invention, provided is the metamaterial for blocking heat and sound waves, which comprises a heat blocking block made of the metamaterial for blocking the heat as a metamaterial for blocking heat and sound waves; and a sound wave blocking block made of the metamaterial for blocking sound waves, and in which the heat blocking block is disposed at a front portion and the sound waves blocking block is disposed at a rear portion based on the direction in which the heat and sound waves process.

Description

TECHNICAL FIELD [0001] The present invention relates to a metamaterial for blocking heat and sound waves,

The present invention relates to a meta-material for heat and sound wave shielding and an apparatus using the same, and is a meta-material and a device using the meta-material for blocking heat while disposing a plurality of media by considering the volume elastic modulus of each medium .

In general, metamaterials, unlike naturally occurring atoms and molecules, can arbitrarily control properties such as Permittivity, Permeability, Refractive Index, and Scattering Parameter, . Recently, the performance improvement and the optimum design of the target object have been actively studied using such a meta material. Metamaterials have been used as a very important factor in relation to the technology for controlling the energy of the wave form.

On the other hand, an elastic wave is a wave transmitted energy due to a change in disturbance state of the medium in the medium, and generally refers to all waves transmitted through the medium. The energy transfer of an elastic wave can be expressed by the wave equation and exists in various frequencies (wavelengths) in the medium. These seismic waves are typically earthquakes, sound waves, and water waves.

In classical mechanics, elastic energy is a kind of kinetic energy, which is generally regarded as a concept of inelasticity, since it is generally treated differently from thermal energy. The phonon, a concept derived from quantum mechanics, is a concept of a quasi-particle representing the quantized oscillation of a solid crystal lattice. It describes the physical properties of a solid, including its heat and electrical conductivity, From the point of view, heat transfer in atomic or molecular units can also be explained as a form of elastic waves.

In the past, the technology and research for effectively blocking heat and sound waves, respectively, have been mainly focused on heat and sound waves as objects of control based on classical mechanics, and a study on materials and materials using such materials .

The present invention discloses a meta-material that blocks heat and sound waves together on the assumption that the meta-material is an elastic wave such as an acoustic wave using the concept of phonon from a quantum mechanical point of view, and an apparatus using the same.

It is an object of the present invention to provide a meta-material that blocks heat and sound waves together on the assumption that the meta-material and the phonon in terms of quantum mechanics are elastic waves such as an acoustic wave, and an apparatus using the same.

According to an embodiment of the present invention, there is provided a heat shield block comprising a meta material for blocking heat, And a sound wave blocking block composed of a metamaterial for blocking a sound wave, wherein the heat blocking block is disposed at a front side and the sound blocking block is disposed at a rear side based on a direction in which the heat and sound waves travel, A meta material for blocking sound waves is provided.

According to one embodiment, the heat block includes a 1-1 block having a predetermined volume elastic modulus and a relatively low volume elastic modulus, and a 1-2 block having a relatively higher solid modulus than the first block And blocks the high-frequency heat by laminating the 1-1 block and the 1-2 block.

Here, a plurality of the 1-1 block and the 1-2 block are provided, and the block rate of the heat can be increased by continuously stacking the blocks.

Further, by stacking the first block including the first 1-1 block and the first 1-2 block, which is set to have a relatively low volume elastic modulus, and the second block that is set to have a relatively solid elastic modulus, And the heat is cut off.

In this case, the second block may include a 2-1 block having a predetermined volume elastic modulus and a 2-2 block having a relatively higher solid modulus than the 2-1 block,

The 2-1 block may have a solid modulus of elasticity relative to the 1-1 block, and the 2-2 block may have a relatively higher solid modulus than the 1-2 block.

According to an embodiment of the present invention, the sound wave blocking block includes a first block and a second block and is configured to have a relatively low volumetric elastic modulus, and a solid block having a relatively higher solid modulus than the heat block And the third block includes a third block to block the sound waves.

It is also possible to provide a plurality of the third blocks and successively stack them to increase the blocking rate of the sound waves.

According to one embodiment, the third block includes a 3-1 block having a predetermined volume elastic modulus and a 3-2 block having a relatively higher solid modulus than the 3-1 block, A 4-1 block having a volume elastic modulus larger than 1 block and a 4-2 block having a volume elastic modulus larger than that of the 4-1 block.

According to another embodiment of the present invention, a unit block for interrupting high-frequency heat is stacked to form a block having a relatively low specific elastic modulus among unit blocks for interrupting low-frequency heat, Wherein the block is laminated to form a block piece having a relative low specific modulus of elasticity among the unit blocks blocking the sound wave,

A first block in which two different media are frequency mismatched so as to block the high-frequency heat; A first block having a relatively low modulus of elasticity to block low frequency heat and a second block having a relatively high modulus of elasticity to be frequency mismatched with the first block;

And a third block having a relatively low modulus of elasticity such that the heat block is formed to have a relatively low volume elastic modulus so as to block sound waves and impedance mismatch with the heat block, do.

According to another embodiment of the present invention, there is provided an acoustic wave device, comprising: a heat block block composed of a meta material for blocking heat; and a sound wave blocking block composed of a meta material for blocking a sound wave, And a heat and sound wave shielding meta material disposed behind the sound wave blocking block; And a frame for fixing the shape of the meta material.

Here, the volume modulus of elasticity of the heat block or the sound blocking block can be varied by adding a block having a predetermined volume modulus of elasticity to the heat block or the sound block block of the meta material.

According to an embodiment of the present invention, a block having different volume elastic moduli is stacked to provide a meta material capable of blocking heat and sound waves together as a target wave.

According to an embodiment of the present invention, it is possible to more effectively cope with various waves introduced into a device using a meta-material, thereby securing effective heat and sound wave blocking performance.

1 is a diagram showing the variation of energy according to the frequency of the wave energy in a wave passing through different medium boundary lines.
2 is a diagram illustrating a concept of blocking heat according to the volume elastic modulus of a medium according to an embodiment of the present invention.
3 is a diagram illustrating a concept of blocking a sound wave according to the volume elastic modulus of a medium according to an embodiment of the present invention.
4 is a view showing a concept of blocking a sound wave according to a volume elastic modulus of a medium according to another embodiment of the present invention.
5 is a diagram illustrating a concept of blocking heat and sound waves together according to the volume elastic modulus of a medium according to an embodiment of the present invention.
6 is a diagram illustrating a concept of an apparatus using a heat and sound wave shielding meta-material according to an embodiment of the present invention.
Fig. 7 is a view showing an xz-plane top view of Fig. 6. Fig.

The embodiments described below are provided so that those skilled in the art can easily understand the technical idea of the present invention, and thus the present invention is not limited thereto. In addition, the matters described in the attached drawings may be different from those actually implemented as schematized drawings to easily describe embodiments of the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings.

It is also to be understood that when an element is referred to as being connected or connected to another element, it may be directly connected or connected to the other element, but it should be understood that there may be other elements in between.

The term "connection" as used herein means a direct connection or an indirect connection between a member and another member, and may refer to all physical connections and electrical connections such as adhesion, attachment, fastening, bonding, and coupling. As used herein, the term " blocking " means that the energy does not go in the traveling direction, and may include the concept of energy refraction and reflection.

In addition, expressions such as 'first, second, third', '1-1, 1-2, 2-1, 2-2', etc. are used only to distinguish a plurality of configurations Do not limit the order or other features between configurations.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The word "comprise" or "having" is used herein to mean that a feature, a number, a step, an operation, an element, a component or a combination thereof is included in the description, A step, an operation, an element, a part, or a combination thereof.

First, the concept of the present invention will be described.

Normally, in the case of a sound wave, the human audible frequency is formed in a range of 16 Hz to 20,000 Hz, and in a range from a few Hz to a few tens KHz. This means that the sound waves travel in the medium of the reversible range formed in the range of several Hz to several tens KHz to reach the person. On the other hand, heat has a range of THz (THz), which indicates that the physical scale of the sound waves and the heat is very different.

The key of the present invention is to control (block) the two waves using the above-mentioned phase and the scale difference of the sound waves.

More specifically, when a wave is transmitted from one medium to another, the concept of impedance matching is required for a sound wave. Impedance matching refers to a method of reducing the reflection due to the impedance difference between two different connection ends when connecting one input terminal and the output terminal. The larger the impedance difference is, the more the sound waves directed from the input terminal to the output terminal are reflected And a very small number of sound waves passing through the output terminal are left. In the case of a column, a concept of frequency matching is required. Since the concept of frequency matching is a concept of impedance matching and bin, detailed description will be omitted.

Conversely, if the above concept is reversed, it can be seen that a mismatch of the impedance and the frequency is required for blocking the sound wave and the heat.

On the other hand, the frequency of the waves traveling in the medium is mainly determined by the bulk modulus (bulk modulus). The volume elasticity is a concept of the ability to resist volume change when an object is compressed on all sides. When the volume elasticity is low, the energy of the wave mainly exists in the low frequency region. If the bulk elasticity is high, do.

[Formula 1]

Assuming that the air density (ρ) of the medium is the same as shown in Equation 1, the velocity V of the sound wave increases as the bulk elastic modulus (β) increases, and the speed of the sound wave is expressed as the product of the wavelength and the frequency Therefore, the frequency becomes larger as the speed of the sound wave becomes higher when the wavelength is constant. Therefore, when different conditions are assumed to be the same in different media, they are formed to have a high frequency region when the volume elastic modulus is high.

Fig. 1 is a diagram showing the propagation of energy according to the frequency of the wave energy in waves passing through different medium boundary lines. Fig. Specifically, FIG. 1 shows the magnitude of the wave energy according to the frequency. FIG. 1 (a) mainly shows the energy distribution in the low frequency region band, and FIG. 1 (b) mainly shows the energy distribution in the high frequency region. FIG. 1 (c) is a graph showing the result of transferring energy when the energy of the low frequency band band moves in the high frequency band.

As shown in FIG. 1, in the case of a wave, a wave having a high frequency (energy) is transformed to a low frequency (energy transfer) according to the second law of thermodynamics, It can be seen that it is difficult to transform to a high frequency in the case of a wave having a low frequency. That is, when the initial wave has a low frequency, only a small amount of energy is transmitted stably when the wave is deformed to a high frequency.

As described above, when a wave is transmitted from a medium having a low frequency (low volumetric elastic modulus) to a medium having a high frequency (having a high bulk elastic modulus) as described above, relatively low frequency heat is mostly reflected and only high frequency heat is transmitted The heat is effectively blocked by using the characteristic that the heat is generated.

As the concept of heat wave is similar to heat, it is possible to block most of the sound waves by laminating two media having different volumetric elastic moduli, and transferring the sound wave from the medium having a low volumetric elastic modulus to the medium having a high volumetric elastic modulus.

The heat and sound wave shielding meta-material of the present invention will be described with reference to FIGS. 2 to 5 below.

FIG. 2 is a diagram illustrating a concept of blocking heat according to the volume elastic modulus of a medium according to an embodiment of the present invention. Referring to FIG.

The heat and sound shielding meta-material according to an embodiment of the present invention includes a heat block formed of a meta-material for blocking heat; And a sound wave blocking block composed of a metamaterial for blocking sound, and the heat block block may be disposed on the front side and the sound blocking block on the rear side based on a direction in which the heat and sound waves travel.

The reason why the heat shield block for blocking the heat is disposed in front of the sound wave blocking block for blocking the sound waves is that the heat is transmitted in the frequency form of mainly the THz (terahertz) region as described above, Is relatively low in frequency compared to heat, so it is possible to transmit long-range energy and have higher permeability, so it is not easy to block the sound waves by only the heat block. In the present invention, it is intended to block the wavelengths of various frequency band zones by stacking blocks having relatively small volume elastic moduli, so that a block region having a relatively small volume elastic modulus at the front side and a block region having a relatively large volume elastic modulus Area is set.

In the present invention, the heat block may include a 1-1 block having a predetermined volume modulus of elasticity, and a 1-2 block having a relatively higher solid modulus than the block 1-1, . ≪ / RTI >

FIG. 2 shows the above-mentioned heat block, which is composed of a first block A and a second block A 'having different volumetric elastic moduli. Referring to FIG. 2 (a), the first 1-1 block A and the 1-2 block A 'are arranged in the order of the first direction (first direction) and the second direction -1 block A is located ahead of the 1-2 block A '. Here, a plurality of the 1-1 block (A) and the 1-2 block (A ') are provided and can be stacked successively. When a plurality of identical blocks are laminated, the probability of blocking (reflecting) the high-frequency column w1 is increased. Accordingly, it is possible to easily adjust the number of the first-first block (A) and the first-second block (A ') to control the heat blocking performance.

In this specification, mismatch is made by blocks having different bulk moduli, and the volume modulus can be determined by the parameter of the thickness of the block, and the distance between the block interfaces is 1 / n of the target wave, The target wave is blocked (reflected). For example, when a high frequency wave as a target wave is introduced into the metamaterial according to an embodiment of the present invention, the distance d between the interfaces of the first block A and the first block A ' ) Is smaller than 1/4 of the wavelength lambda (?) Of the high-frequency thermal wave, the target wave can be blocked. It should be noted that such a concept can be applied not only to a high-frequency heat but also to a low-frequency heat and sound wave blocking, but this example is only one of numerous examples for explaining blocking of a target wave, do. In addition, a " block " in accordance with one embodiment herein may be formed of a singular or plural types of media and combinations thereof.

In this specification, the concept of 'continuous' means that the medium is arranged next to one medium. Here, the concept of 'placement' is the same as the meaning of 'positioning', and it is not necessary that the medium is in contact with the medium, and other materials (for example, a dielectric material) It should be noted that

Referring to FIG. 2B, the low-frequency column w2 having a higher permeability than the high-frequency column w1 is not blocked but is formed in the first block A and the first block A ' Easily pass through the train end block.

In order to solve such a problem, the heat block according to an embodiment of the present invention includes the first 1-1 block (A) and the 1-2 block (A ') so as to block the low frequency row (w2) A first block AA 'that is set to have a relatively low modulus of elasticity, and a second block BB' that is set to have a relatively solid modulus of elasticity. It should be noted here that in a block in which a first block AA 'formed of a unit block for frequency mismatch with respect to a column w1 of a high frequency is formed for frequency mismatch with a column w2 of a low frequency wave , And serves as a block having a relatively low volume elastic modulus. That is, in the meta material of the present invention, the blocks having relatively low modulus of elasticity are hierarchically arranged and laminated so as to be located behind the block having the relative solid modulus, and the high-frequency column w1 and the low- The column w2 can be simultaneously controlled (blocked).

Referring to FIG. 2 (c), it can be seen that the low frequency train w2 is blocked without passing through the train end block unlike FIG. 2 (b).

Here, the first 1-1 block (A) and the 1-2 block (A ') ideally form a predetermined first block (AA') in the heat block. The first block AA 'has a relatively low volume elastic modulus as compared to the second block BB' and the second block BB 'has a relatively high solid modulus relative to the first block AA' do. According to this configuration, it is possible to perform appropriate frequency mismatching such that the low-frequency column w2 can not pass through.

The second block BB 'is characterized in that it includes a 2-1 block B having a predetermined volume elastic modulus and a 2-2 block having a relatively higher solid modulus than the 2-1 block .

According to one embodiment for frequency mismatching, the meta-material of the present invention may be formed such that the average volume elastic modulus values of the first 1-1 block (A) and the first 1-2 block (A ' (B ') and the 2-2 block (B').

In another embodiment, the second-1 block (B) is formed of a material which is relatively more solid than the first 1-1 block (A) and the second 2-2 block (B ' If the elastic modulus of elasticity is formed to have a moderate elastic modulus, such frequency mismatching becomes possible.

Next, the meta-material for blocking the sound wave of the present invention will be described. The construction of the meta-material for blocking the sound waves is similar to that of the meta-material for blocking the heat.

3 is a diagram illustrating a concept of blocking a sound wave according to the volume elastic modulus of a medium according to an embodiment of the present invention.

3 (a) and 3 (b), a heat block block for blocking heat and an acoustic wave blocking block for blocking a sound wave are arranged side by side in the traveling direction of a sound wave, and a sound wave w3 enters therein .

Here, the thermal block has a relatively small volumetric elastic modulus as compared with the sound block. The difference in the volume elastic modulus between the heat block and the sound blocking block is a range in which the impedance mismatching is performed, which is sufficient to block the progress of the sound wave w3 The shape and the number of laminations of the heat block may be variously set.

According to one embodiment of the present invention, the sound wave blocking block in the meta-material including the heat blocking block and the sound blocking block includes the first block (AA ') and the second block (BB' And a third block having a solid modulus of elasticity relatively to that of the heat block, to block the sound waves.

(AA'BB ', a structure including the first block and the second block), which is a unit structure for blocking the high-frequency and low-frequency heat, is set to have a relatively low volume elastic modulus, and a newly added third block (CC'DD ') is set to have a relatively solid modulus of elasticity, thereby blocking the sound waves. That is, in the block in which the heat block AA 'BB' formed by forming the unit block for the frequency mismatch with respect to the column w2 of the conventional low frequency is formed for the impedance mismatch against the wave of the sound wave, And serves as a block having a volume elastic modulus. That is, in the meta-material of the present invention, the blocks having relative low modulus of elasticity are hierarchically arranged and laminated so as to be positioned behind the block having the relative solid modulus, so that the heat (w1, w2) The sound waves can be controlled (blocked) at the same time.

According to one embodiment, a plurality of the third blocks may be provided, and the plurality of third blocks may be continuously stacked to increase the blocking rate of sound waves. This is the same as the reason that the first block and the second block are provided in advance.

For example, the third block may include a third block (C) having a predetermined volume elastic modulus, a third (C ') block (C') having a relatively higher elastic modulus than the third block (D) having a volume modulus of elasticity greater than that of the 3-1 block (C) and a 4-1 block (D) having a volume modulus of elasticity higher than that of the 3-2 block (C ' Two blocks D may be further formed. If the volume elastic modulus of the 3-1 block C is larger than the volume elastic modulus of the 2-1 block B-2-2 block B ', the third block CC'DD' A larger volumetric modulus of elasticity is assured compared to the previously arranged heat-block (AA'BB ').

As another embodiment for the impedance mismatching, the meta material of the present invention may have a volume elastic modulus average value of the 3-1 block (c) and the 3-2 block (C ' Is smaller than the average volume elastic modulus value of the 4 < th > -2 block (D ').

4 is a view showing a concept of blocking sound waves according to the volume elastic modulus of a medium according to another embodiment of the present invention.

FIG. 4 shows a state in which the sound wave w3 is cut off as in FIG. 3, but an embodiment of a meta material having a relatively solid modulus of elasticity is formed unlike FIG. Shows that the sound wave w4 is blocked in the third block CC'CC'DD'DD 'after passing through the train end block AA'AA'BB'BB'. Referring to the drawing, the volume elastic modulus of the third block (CC'CC'DD'DD ') is larger than that of the heat block (AA'AA'BB'BB'), and the sound wave (W3) Sufficient volume modulus difference is achieved.

It is to be understood that the above-described embodiments are merely examples for convenience of description, and that according to various embodiments, two blocks constituting each block may be replaced by a single number of blocks, and alternatively, Be careful.

5 is a view illustrating a concept of blocking heat and sound waves together according to the volume elastic modulus of a medium according to an embodiment of the present invention.

Referring to FIG. 5, a high-frequency column w1, a low-frequency column w2 and a sound wave w3 propagate simultaneously to the meta-material of the present invention.

In order to block the progress of the high-frequency wave w1, the low-frequency wave w2 and the sound wave w3, the heat block and the sound blocking block are continuously stacked in the progress direction. A frequency mismatch and an impedance mismatch are generated in accordance with the combination of the relative low bulk elastic modulus and the solid modulus so that the waves entering each of the heat block and the sound blocking block may be cut off each other So that heat and sound waves can be blocked together.

Next, the heat and sound wave shielding meta-material according to another embodiment of the present invention will be described. The following embodiments can be of significance as a generalized embodiment of the embodiments described above.

In this embodiment, unit blocks for blocking high-frequency heat are stacked to form block pieces having a relatively low specific modulus of elasticity among unit blocks for interrupting low-frequency heat, and unit blocks for blocking low-frequency heat are laminated, And blocks the heat and the sound waves together.

Here, the block 'part' means a part constituting one unit block. The volumetric elastic modulus can be determined according to the thickness (or size) of the medium (block). In the present embodiment, a mismatch structure is formed by using a block having a small thickness with respect to the traveling direction of the wave, We propose a hierarchical structure in which unit blocks for blocking high frequency waves are gathered to form a unit block for blocking low frequency waves so as to form a mismatch structure using a block having a larger thickness.

Specifically, a first block is configured such that two or more different media are frequency mismatched so as to block the high-frequency heat; A first block having a relatively low modulus of elasticity to block low frequency heat and a second block having a relatively solid modulus of elasticity to be frequency mismatched with the first block, And a third block having a relatively low modulus of elasticity such that the heat block has a relatively low modulus of elasticity so as to be mismatched with the heat block.

This is a generalization of the above-described embodiment, and the types and the number of the media included in each of the first block and the second block are not limited. For example, the two or more different media may mean different volume elastic moduli in the same kind of material. In the present invention, it is possible to effectively block heat and sound waves by forming an optimal combination of the relative low-volumetric elastic modulus and the solid elastic modulus without limiting the kind and the number of the medium.

However, it is important that the first block is disposed ahead of the second block with respect to the traveling direction of the wave. This is because the sound wave has a waveform of a low frequency type relative to the heat.

According to one embodiment of the present invention, a medium having different volume elastic moduli is stacked to provide a meta material capable of blocking heat and sound waves together.

Finally, referring to FIG. 6 and FIG. 7, an apparatus using the heat and sound shielding meta-material of the present invention will be described.

According to an embodiment of the present invention, there is provided a heat block comprising a heat shield block made of a meta material for cutting off heat and a sound blocking block made of a meta material for blocking sound, A heat shielding block disposed at a front side and a sound blocking block disposed at a rear side; There is provided an apparatus using a meta material for blocking heat and acoustics including a frame 101 for fixing the shape of the meta material.

The term 'device' here is a concept that includes a machine, a tool, and an element and a measurement to make it function according to a purpose. Specifically, it can be applied to building materials used on the exterior walls of buildings, protective materials, or weapons systems for the purpose of improving the survivability.

The frame 101 is not limited to that shown in the drawings as a component that simply fixes the shape of the metamaterial 100.

As shown in FIG. 7, when the metamaterial of the present invention is included in any device according to an embodiment of the present invention, any one of the heat block or the sound blocking block of the meta material is selected, The mass elastic modulus of the block may be varied by adding a medium (M, M ') having a predetermined volume modulus of elasticity.

According to the present invention, it is possible to more effectively cope with various waves introduced into the apparatus using the metamaterial of the present invention, thereby ensuring effective heat and sound wave blocking performance.

In summary, the present invention can effectively block heat and sound waves by using the concept of the effective volumetric elastic modulus matched to the waves at different scales. Mismatch of effective frequency or impedance in a wave having a small scale volumetric elastic modulus becomes ineffective in a wave having a large scale volumetric elastic modulus because the effective property of the medium required for the progress of the wave is proportional to the wavelength, Mismatch of effective frequency or impedance in a wave having a volumetric elastic modulus of a wave is ineffective in a wave having a small-scale volumetric elastic modulus.

By using the concept of mismatch as described above, blocks having different volume elastic moduli are stacked to provide a meta material capable of blocking heat and sound waves together. According to one embodiment, the volume elastic modulus can be varied depending on the ratio of the stacked blocks, thereby effectively shielding the target wave in various frequency forms.

The present specification is not intended to limit the present invention by the specific terms given. While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Modifications, alterations, and modifications can be made.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

That is, the scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention .

100: meta material
101: frame

Claims (12)

As a meta material for blocking heat and sound waves,
A heat block comprising a metamaterial for blocking heat; And
And a sound wave blocking block composed of a metamaterial for blocking a sound wave,
Wherein the heat block is disposed on the front side and the sound blocking block is disposed on the rear side based on a direction in which the heat and sound waves travel.
The method according to claim 1,
The train end block
A first 1-1 block having a predetermined volume elastic modulus and a relatively low volume elastic modulus and a 1-2 block having a relatively higher solid modulus than the first block, -2 blocks are laminated so as to block high-frequency heat.
3. The method of claim 2,
And a plurality of the first 1-1 block and the first 1-2 block are continuously stacked to increase the rate of heat cut-off.
3. The method of claim 2,
By laminating the first block including the first 1-1 block and the first 1-2 block so as to have a relatively low volume elastic modulus and the second block having a relatively solid elastic modulus, And blocking the heat and the sound wave.
5. The method of claim 4,
Wherein the second block comprises a 2-1 block having a predetermined volumetric modulus of elasticity and a 2-2 block having a relatively higher solid modulus than the 2-1 block.
5. The method of claim 4,
Wherein the second-1 block has a solid-state elastic modulus relative to the first-first block, and the second-2 block has a solid-state elastic modulus relative to the first-second block.
5. The method of claim 4,
The sound wave blocking block
A heat block end block including the first block and the second block and having a relatively low volume modulus of elasticity and a third block having a relatively high solid modulus relative to the heat end block, A metamaterial for blocking heat and sound waves.
8. The method of claim 7,
Wherein a plurality of the third blocks are stacked and continuously laminated to increase a rate of blocking the sound waves.
8. The method of claim 7,
The third block
A 3-1 block having a predetermined volume modulus of elasticity and a 3-2 block having a solid modulus of elasticity relatively higher than that of the 3-1 block, 4-1 block, and a 4-2 block having a volume elastic modulus larger than that of the 4-1 block.
Unit blocks for interrupting high-frequency heat are stacked to form block pieces having a relatively low specific elastic modulus among unit blocks for interrupting low-frequency heat,
Wherein a unit block for blocking low-frequency heat is laminated to form a block piece having a relatively low specific modulus of elasticity among unit blocks for blocking sound waves,
A first block configured to frequency mismatch two or more different media to block the high-frequency heat; A first block having a relatively low modulus of elasticity to block low frequency heat and a second block having a relatively high modulus of elasticity to be frequency mismatched with the first block;
And a third block having a relatively low modulus of elasticity so as to block sound waves and having a relatively low modulus of elasticity, and a third block having a relatively high modulus of elasticity to be impedance mismatched with the heat block.
An apparatus using the heat and sound wave shielding meta-material according to any one of claims 1 to 10,
A heat block block composed of a metamaterial for blocking heat and a sound blocking block composed of a metamaterial for blocking a sound wave, wherein the heat block is disposed in front of the heat block, A heat and sound wave blocking meta material disposed behind the sound wave blocking block;
And a frame for fixing the shape of the meta material.
12. The method of claim 11,
Wherein the volume modulus of the heat block or the sound block is varied by adding a block having a predetermined volume modulus of elasticity to the heat block or sound block block of the meta material. .

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