CN107196645B - Fluid-solid type sound wave logic AND gate device based on phonon crystal ring-shaped resonant cavity - Google Patents
Fluid-solid type sound wave logic AND gate device based on phonon crystal ring-shaped resonant cavity Download PDFInfo
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- CN107196645B CN107196645B CN201710349041.5A CN201710349041A CN107196645B CN 107196645 B CN107196645 B CN 107196645B CN 201710349041 A CN201710349041 A CN 201710349041A CN 107196645 B CN107196645 B CN 107196645B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
Abstract
The invention discloses a fluid-solid type sound wave logic AND gate device based on a phononic crystal ring-shaped resonant cavity, which comprises a phononic crystal junction and an outer packaging box; the front end face of the outer packaging box is provided with a first incident port, a second incident port and a third emergent port, and the rear end face of the outer packaging box is provided with a first emergent port and a second emergent port; the photonic crystal junction is a periodically arranged round steel cylinder, a first incident waveguide is formed between a first incident port and a first exit port by removing a plurality of cylinders in the periodically arranged round steel cylinder, a second incident waveguide is formed between a second incident port and a second exit port, two ring-shaped resonant cavities are formed between the first incident waveguide and the second incident waveguide, and an exit waveguide connected with a third exit port is formed between the two ring-shaped resonant cavities. The invention can realize the logic and function by taking sound wave as a propagation medium.
Description
All as the field of technology
The invention relates to the fields of materials, integrated device manufacturing, sound wave technology and the like, in particular to a logic gate device used in a sound wave integrated structure.
All the above-mentioned background techniques
The phononic crystal is formed by periodically arranging two or more than two different elastic materials, has the characteristics of acoustic wave forbidden band, auto-collimation effect, negative refraction and the like, and can be designed into an acoustic wave lens, an acoustic wave guide, an acoustic wave filter, an acoustic wave switch and the like. The design of the acoustic wave device must be reduced in size and highly integrated, and the main mechanism of the phononic crystal characteristic is bragg scattering, the bragg scattering scale is required to be in the same order of magnitude as the acoustic wave length, so the reduction in size is a big bottleneck of the acoustic wave device design. In the conventional point defect resonant device design, the transmission quality is poor due to the interference effect among elements.
The application research of the phononic crystal acoustic wave device is just started, and no flow-solid type acoustic wave logic gate device adopting a phononic crystal annular resonant cavity exists at present.
All the contents of the invention
The invention aims to provide a fluid-solid type sound wave logic AND gate device based on a phononic crystal ring-shaped resonant cavity, which can realize logic and functions by taking sound waves as propagation media. The purpose of the invention is realized by the following technical scheme:
a flow-solid type sound wave logic AND gate device based on a phonon crystal ring-shaped resonant cavity is characterized by comprising a phonon crystal junction and an outer packaging box; the front end face of the outer packaging box is provided with a first incident port, a second incident port and a third emergent port, and the rear end face of the outer packaging box is provided with a first emergent port and a second emergent port; the photonic crystal junction is a periodically arranged round steel cylinder, a first incident waveguide is formed between a first incident port and a first exit port by removing a plurality of cylinders in the periodically arranged round steel cylinder, a second incident waveguide is formed between a second incident port and a second exit port, two ring-shaped resonant cavities are formed between the first incident waveguide and the second incident waveguide, and an exit waveguide connected with a third exit port is formed between the two ring-shaped resonant cavities.
As a specific technical scheme, the outer packaging box is a silicon-based box.
As a specific technical scheme, the phononic crystal structure is formed by round steel columns arranged in a 25 ＊ 16 matrix.
As a specific technical scheme, the spacing of the round steel columns arranged in the 25 ＊ 16 matrix is 5 x 10 in the transverse direction-4m, longitudinal 5 x 10-4m。
As a specific technical scheme, in the 25 ＊ 16 matrix-arranged round steel cylinders, the ring-shaped resonant cavity removes the peripheral cylinders for selecting a 5 ＊ 5 structure, and a 3 ＊ 3 arrangement structure is formed.
As a specific technical scheme, four local round steel cylinders are respectively arranged at four corners in the annular resonant cavity.
As a specific technical scheme, the longitudinal section radius of the round steel column body is 2.25 x 10-4The longitudinal section radius of m, four local round steel cylinders is 1.25 x 10-4m, length all 1.0 x 10-2m。
As a specific technical scheme, the steel material comprises the following parameters: density ps＝7780kgm3Longitudinal waveWave velocity Csl5825m/s and shear wave velocity Cst3227 m/s; the parameters of the air are: density pa＝1.29kgm3Velocity of longitudinal wave Csa343 m/s; the parameters of the silicon material are as follows: density psi＝2330kgm3。
As a specific solution, the thickness of the silicon-based box is 1.0 x 10-5m, internal length 25 ＊ 5 x 10-4m, outer width 16 ＊ 5 x 10-4m, internal height 1.0 x 10-2m。
As a specific technical solution, the width of the rectangular incident port and the rectangular exit port is 5 × 10-4m, height 0.5 x 10-2m。
The invention has the beneficial effects that: the fluid-solid type sound wave logic AND gate device based on the phononic crystal ring-shaped resonant cavity introduces the phononic crystal ring-shaped resonant cavity structure, takes the ring-shaped resonant cavity as a coupling element, can isolate interference and effectively improves transmission quality. Compared with the existing sound wave device, the sound wave device has very good filtering and sound wave amplifying effects, and can realize relatively sensitive sound wave logic and functions.
Description of the drawings
Fig. 1 is a schematic structural diagram of a fluid-solid type acoustic wave logic and gate device based on a phonon crystal ring resonator according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a fluid-solid type acoustic wave logic and gate device based on a phonon crystal ring resonator according to an embodiment of the present invention.
Fig. 3 is a graph of acoustic transmission coefficients of a fluid-solid acoustic logic and gate device based on a photonic crystal ring resonator under different acoustic incident conditions provided in this embodiment.
Fig. 4 is a truth table of the flow-solid type acoustic wave logic and gate device based on the phononic crystal ring resonator under different acoustic wave incidence conditions provided in this embodiment.
(specific embodiments) in all cases
Referring to fig. 1 and 2, the flow-solid type acoustic wave logic and gate device based on the phononic crystal ring resonator provided in this embodiment includes a phononic crystal junction, an outer packaging box, and an outer enclosureThe packaging box is a silicon-based box, the phononic crystal structure is formed by round steel columns arranged in a 25 ＊ 16 matrix, and the spacing between the round steel columns arranged in a 25 ＊ 16 matrix is 5 × 10 in the transverse direction-4m, longitudinal 5 x 10-4m。。
The silicon-based box comprises a silicon-based box, a first incident port A, a second incident port B and a third exit port C, wherein the front end face of the silicon-based box is provided with the first incident port A, the second incident port B and the third exit port C, the rear end face of the silicon-based box is provided with the first exit port D and the second exit port E, a column of cylinders between the first incident port A and the first exit port D are removed to form a first incident waveguide, a column of cylinders between the second incident port B and the second exit port E are removed to form a second incident waveguide, a plurality of cylinders between the first incident waveguide and the second incident waveguide are removed to form two ring-shaped resonant cavities, a plurality of cylinders between the two ring-shaped resonant cavities are removed to form an exit waveguide connected with the third exit port C, specifically, the two ring-shaped resonant cavities are formed by removing peripheral cylinders for selecting a 5 ＊ 5 structure, and leaving a 3 ＊ 3 arrangement structure, and four local steel cylinders 11 are respectively placed at four corners in.
In this embodiment, the longitudinal cross-sectional radius of the round steel pillar is 2.25 x 10-4The radius of the longitudinal section of the m and four local round steel cylinders 11 is 1.25 x 10-4m, length all 1.0 x 10-2And m is selected. Wherein the parameters of the steel material are as follows: density ps＝7780kg/m3Velocity of longitudinal wave Csl5825m/s and shear wave velocity Cst3227 m/s; the parameters of the air are: density pa＝1.29kg/m3Velocity of longitudinal wave Csa343 m/s; the parameters of the silicon material are as follows: density psi＝2330kg/m3. Furthermore, the thickness of the silicon-based box is 1.0 x 10-5m, internal length 25 ＊ 5 x 10-4m, outer width 16 ＊ 5 x 10-4m, internal height 1.0 x 10-2And m is selected. The first incident port a, the second incident port B, the third exit port C, the first exit port D and the second exit port E are rectangular ports, and the widths of the rectangular incident port and the rectangular exit port are 5 × 10-4m, height 0.5 x 10-2m。
In the above embodiment, the cylinder is removed in an annular shape, two annular resonant cavities are constructed, incident sound waves are filtered and amplified, when a sound mode in the incident waveguide and the annular resonant cavities resonate, a selected sound mode is coupled to the exit waveguide from the incident waveguide after the selected sound mode is amplified in the annular resonant cavities, and is transmitted to the exit port, and the third exit port C is used as an output port for logical judgment. The implementation of the logical and function is judged according to the transmittance, which is the power ratio of the outgoing acoustic mode to the incoming acoustic mode.
As shown in fig. 3 and 4, the invention has the following beneficial effects: the invention provides a fluid-solid type acoustic wave logic AND gate device based on a photonic crystal ring resonant cavity, which adopts a semiconductor integrated manufacturing concept, designs a photonic crystal waveguide and a ring resonant cavity in a silicon-based box, introduces a photonic crystal ring resonant cavity structure, has very good filtering and acoustic wave amplification effects compared with the existing acoustic wave device, when an acoustic wave enters from an incident waveguide, if the acoustic mode is consistent with the resonant cavity harmonic frequency, the acoustic wave is selected into the resonant cavity and resonates in the resonant cavity, greatly enhances the amplitude of the acoustic wave mode, and finally is led out from an emergent waveguide, thereby realizing sensitive acoustic wave logic and functions. The invention has the advantages of simple structure, high integration level, strong designability, high quality, low power consumption and the like.
The above embodiments are merely for full disclosure and not for limitation, and the replacement of the equivalent technical features based on the innovative subject of the present invention without inventive step should fall within the scope of the present disclosure.
Claims (10)
1. A flow-solid type sound wave logic AND gate device based on a phonon crystal ring-shaped resonant cavity is characterized by comprising a phonon crystal junction and an outer packaging box; the front end face of the outer packaging box is provided with a first incident port, a second incident port and a third emergent port, and the rear end face of the outer packaging box is provided with a first emergent port and a second emergent port; the photonic crystal junction is a periodically arranged round steel cylinder, a first incident waveguide is formed between a first incident port and a first exit port by removing a plurality of cylinders in the periodically arranged round steel cylinder, a second incident waveguide is formed between a second incident port and a second exit port, two ring-shaped resonant cavities are formed between the first incident waveguide and the second incident waveguide, and an exit waveguide connected with a third exit port is formed between the two ring-shaped resonant cavities.
2. The fluid solids acoustic wave logic and gate device of claim 1, wherein the outer enclosure is a silicon-based enclosure.
3. The fluid solids acoustic logic and gate device of claim 2, wherein the silicon-based box has a thickness of 1.0 x 10-5m, internal length 25 ＊ 5 x 10-4m, outer width 16 ＊ 5 x 10-4m, internal height 1.0 x 10-2m。
4. The fluid-solid acoustic wave logic and gate device according to claim 3, wherein the first incident port, the second incident port, the third exit port, the first exit port and the second exit port are all rectangular ports, and the width of the rectangular incident port and the rectangular exit port is 5 x 10-4m, height 0.5 x 10-2m。
5. The fluid-solid type acoustic wave logic and gate device according to any one of claims 1 to 4, wherein the phononic crystal structure is formed of round steel columns arranged in a 25 ＊ 16 matrix.
6. The fluid-fixed acoustic wave logic and gate device according to claim 5, wherein the steel cylinders arranged in the 25 ＊ 16 matrix are spaced at 5 x 10 transverse intervals-4m, longitudinal 5 x 10-4m。
7. The fluid-fixed acoustic logic and gate device of claim 6, wherein the 25 ＊ 16 matrix-arranged steel cylinders have their peripheral cylinders removed for selection of a 5 ＊ 5 structure, leaving a 3 ＊ 3 arrangement.
8. The fluid-solid type acoustic wave logic and gate device according to claim 7, wherein four local round steel cylinders are respectively disposed at four corners of the ring resonator.
9. The fluid-fixed acoustic wave logic and gate device of claim 8, wherein the longitudinal cross-sectional radius of the steel cylinder is 2.25 x 10-4The longitudinal section radius of m, four local round steel cylinders is 1.25 x 10-4m, length all 1.0 x 10-2m。
10. The fluid solids acoustic wave logic and gate device of claim 9, wherein the steel material parameters are: density ps＝7780kg/m3Velocity of longitudinal wave Csl5825m/s and shear wave velocity Cst3227 m/s; the parameters of the air are: density pa＝1.29kgm3Velocity of longitudinal wave Csa343 m/s; the parameters of the silicon material are as follows: density psi＝2330kg/m3。
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| US9199217B2 (en) * | 2010-03-12 | 2015-12-01 | Los Alamos National Security, Llc | Material fabrication using acoustic radiation forces |
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| CN102723947A (en) * | 2012-06-18 | 2012-10-10 | 中国电力科学研究院 | Variable-speed true random source logic circuit based on quantum physics and applied to electric power system |
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Effective date of registration: 20210623 Address after: 528400 No.3, building 2, 191 Boai 7th Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: Guangdong Titan Intelligent Power Co.,Ltd. Address before: On the south side of Zhuhai Avenue in Guangdong city of Zhuhai province Jinwan District 519000 Patentee before: GUANGDONG INSTITUTE OF SCIENCE & TECHNOLOGY |