CN107863097A - A kind of method based on patterning tailoring technique focused sound waves - Google Patents
A kind of method based on patterning tailoring technique focused sound waves Download PDFInfo
- Publication number
- CN107863097A CN107863097A CN201711211037.9A CN201711211037A CN107863097A CN 107863097 A CN107863097 A CN 107863097A CN 201711211037 A CN201711211037 A CN 201711211037A CN 107863097 A CN107863097 A CN 107863097A
- Authority
- CN
- China
- Prior art keywords
- film
- mrow
- phase
- sound
- focus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/30—Sound-focusing or directing, e.g. scanning using refraction, e.g. acoustic lenses
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Building Environments (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of method based on patterning tailoring technique focused sound waves, including：Determine that phase regulates and controls film, the phase change 180 degree for the sound wave that the phase regulation and control film can be transmitted；Phase regulation and control film is cut, so that the phase after cutting regulates and controls the sound wave flat focus after film transmission in focus or space-focusing in focus, wherein, by controlling the size cut, the wave path-difference for the sound wave arrival focus for making the sound wave behind clipping region adjacent thereto after non-clipping region transmits is the half of wave length of sound.The present invention be based on by transmission phase change 180 degree film and specific pattern design rule to realize Acoustic focusing.Obtained sound focusing point can be used for ultrasonic wave rubble, etc., have broad application prospects.
Description
Technical field
The invention belongs to technology of acoustic wave field, more particularly, to a kind of based on patterning tailoring technique focused sound waves
Method.
Background technology
Focusing to sound wave has great significance and in life for ultrasonic imaging, blast wave stone-breaking, acoustic energy weapon etc.
Great practical value is suffered from production and life.In existing document, the method that is focused using plane device to sound wave
There are active phased array method and the stacking of waveguide cavity of passive type etc..Its implementation is all to make diverse location in plane
Phase bit there is different phases, make entirely poly- to realize by the relation for meeting mutually to grow to focus phase in device plane
It is burnt.
Active phased array is to utilize Current controlled delay phase；And passive type waveguide cavity is to utilize having range line
Big phase change is realized from the sound passage of the design distortion in metal waveguide.Above two method is utilized respectively waveguide cavity
Stacking and the method for etching of metallic plate sound wave is regulated and controled, to realize sound focusing.
But the thickness of detector of both the above mode is all more than Centimeter Level and whole device is very huge and thick and heavy,
Cost is also higher, limits its application.And both stack the method for phase unit because its unit volume can not neglect
Slightly, the limited precision of its specific effect, the sound wave that unit size is especially less than to wavelength are difficult to focus on.And active side
Method makes whole system more huge due to power supply to be configured and control system, it is difficult to is integrated into hand-held device etc..
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, gathered the invention provides one kind based on patterning tailoring technique
The method and device of burnt sound wave, thus solves that existing sound wave focusing arrangement focusing accuracy is limited, device is huge and cost is higher
Etc. technical problem.
To achieve the above object, the present invention provides a kind of method based on patterning tailoring technique focused sound waves, including：
Determine that phase regulates and controls film, the phase change 180 degree for the sound wave that the phase regulation and control film can be transmitted；It is right
The phase regulation and control film is cut so that sound wave flat focus Jiao Yu after phase regulation and control film transmission after cutting
Put or space-focusing is in focus, wherein, by controlling the size cut, make the sound wave behind clipping region adjacent thereto
The wave path-difference that sound wave after non-clipping region transmits reaches focus is the half of wave length of sound.
Alternatively, when the sound wave flat focus after the phase regulation and control film transmission after cutting are in focus, to described
Phase regulation and control film, which is cut, to be included：
Phase regulation and control film is cut into the strip structure that is symmetrically distributed, to symmetrical centre nth bar line at a distance of right
The width l at title centernMeet：
Wherein, fcFor the focal length of design, λ is wave length of sound, and N is the total line number of strip structure side.
Alternatively, when the sound wave space-focusing after the phase regulation and control film transmission after cutting is in focus, to described
Phase regulation and control film, which is cut, to be included：
Phase regulation and control film is cut to the loop configuration being symmetrically distributed, the ring radius r of nth bar loop wirenMeet：
Wherein, fcFor the focal length of design, λ is wave length of sound, and N is total loop wire number of loop configuration.
Optionally it is determined that phase regulates and controls film, including：
Any density is less than to the high score of particle more than the metallic particles or non-metallic particle of fibrous material and any modulus
Sub- material or soft material solution is uniformly mixed to get mixed solution；
Using mixed solution as raw material, using electrostatic spinning technique, the electrospun fibers with particle are obtained, and then by quiet
Electricity spinning fibre is accumulated to form electrostatic spinning film, and the electrostatic spinning film is the phase regulation and control film.
The mixed solution that the present invention obtains after being mixed by variable grain from different high polymer materials or soft material solution,
Different-diameter and the electrostatic spinning film of distribution can be prepared, due to the vibration of particle in film, so as to different frequency scope
Sound wave has 180 degree phase change, wherein, particle is more, and response frequency gets over low frequency；Film is thicker (being less than in the case of 1 millimeter),
Response frequency is also lower.
Alternatively, any density be more than the metallic particles of fibrous material or non-metallic particle be copper, iron, gold, silver,
Platinum, cobalt, nickel, lead and its corresponding oxide.
In general, by the contemplated above technical scheme of the present invention compared with prior art, have below beneficial to effect
Fruit：
1st, the present invention can realize efficient Acoustic focusing, can be used for medical ultrasound ripple rubble, acoustics positioning heating, sound
Learn the acoustic applications occasion that the needs such as weapon accurately control high-energy to concentrate.
2nd, size reduction.Compared with the design of any similar function before, present invention utilizes the two of initial phase difference 180 degree
Subregion collective effect, device area can be made all to reduce half in x, y both directions, so the film gross area can be made to reduce 3/
4 (z directions are incidence wave direction, and xy is vertical with z directions).
3rd, capacity usage ratio is higher.The present invention is to be based on total transmissivity structure, make use of the energy of whole plane, has higher
Capacity usage ratio.And the present invention is passive device, all have great advantage in energy consumption, volume, portability.
Brief description of the drawings
Fig. 1 is the method flow schematic diagram provided by the invention based on patterning tailoring technique focused sound waves；
Fig. 2 is strip structure focus pattern cutting schematic diagram provided by the invention；
Fig. 3 integrates field computation schematic diagram for transmission provided by the invention；
Fig. 4 is sound wave focal path schematic diagram provided by the invention；
Fig. 5 is that strip structure provided by the invention emulates transmitted field figure (xz planes)；
Fig. 6 is strip structure experiment test transmitted field figure (xz planes) provided by the invention；
Fig. 7 is loop configuration focus pattern cutting schematic diagram provided by the invention；
Fig. 8 is that loop configuration provided by the invention emulates transmitted field figure (x/y plane)；
Fig. 9 is that loop configuration provided by the invention emulates transmitted field figure (yz planes)；
Figure 10 is the emulation relation that focus energy intensification factor provided by the invention increases and changed with fringe number and number of rings N
Figure；
Figure 11 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:When 8, obtained according to the inventive method
The scanning electron microscope (SEM) photograph of fiber membrane；
Figure 12 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:When 4, obtained according to the inventive method
The scanning electron microscope (SEM) photograph of fiber membrane；
Figure 13 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:When 2, obtained according to the inventive method
The scanning electron microscope (SEM) photograph of fiber membrane；
Figure 14 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:When 1, obtained according to the inventive method
The scanning electron microscope (SEM) photograph of fiber membrane；
Figure 15 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:The fiber membrane obtained when 8 carries out sound wave
Transmit the result figure of test；
Figure 16 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:The fiber membrane obtained when 4 carries out sound wave
Transmit the result figure of test；
Figure 17 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:The fiber membrane obtained when 2 carries out sound wave
Transmit the result figure of test；
Figure 18 is that the quality of copper particle and polyvinyl alcohol provided by the invention is 1:The fiber membrane obtained when 1 carries out sound wave
Transmit the result figure of test.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
For the disadvantages described above or Improvement requirement of prior art, the present invention is based on transmission phase changing 180 degree
Film and specific pattern design rule are to realize Acoustic focusing.Film is cut into using laser cutting or other cutting means
Designed pattern, the sound wave of different frequency can be focused, and focal length is adjustable according to pattern.In this fexible film
On shearing it is very convenient, and integral device is also very light, and cost is relatively low, is made beneficial to large-scale production.This mode
It is passive, there is advantage in energy consumption and portability.
Fig. 1 is the method flow schematic diagram provided by the invention based on patterning tailoring technique focused sound waves, such as Fig. 1 institutes
Show, including step S101 to step S102.
S101, determine that phase regulates and controls film, the phase change 180 for the sound wave that phase regulation and control film can be transmitted
Degree.
S102, phase regulation and control film is cut so that the sound after phase regulation and control film transmission after cutting
Popin face focuses on focus or space-focusing in focus, wherein, by controlling the size cut, make behind clipping region
The wave path-difference that the sound wave sound wave adjacent thereto after non-clipping region transmits reaches focus is the half of wave length of sound.
Alternatively, when the sound wave flat focus after the phase regulation and control film transmission after cutting are in focus, to phase
Regulation and control film, which is cut, to be included：
Phase regulation and control film is cut to the strip structure being symmetrically distributed, as shown in Fig. 2 the nth bar line to symmetrical centre
At a distance of the width l of symmetrical centrenMeet：
Wherein, fcFor the focal length of design, λ is wave length of sound, and N is the total line number of strip structure side.
As shown in Figure 2, according to the embodiment of the present invention, main body is made up of film 1 to be cut and cutting mode 2.Will
Film is cut according to Fig. 2 method, when the film surface after plane sound wave normal incidence to cutting, according to Rayleigh-Suo Mo
Luxuriant and rich with fragrance diffraction formula can calculate corresponding transmission field distribution.
The formation of transmitted field is specific as shown in Figure 3：A in Fig. 3, b figure are begged under rectangular coordinate system and cylindrical coordinate respectively
The situation of opinion, two kinds of situations are similar, here mainly with rectangular coordinate system introduction.The sub- sound source face of planar representation where XOY, and point
Plane where S is the object penetrating plane of our of interest any one parallel to sound source face, and P represents acoustic pressure.Target
The acoustic pressure (amplitude and phase that include acoustic pressure) at any point of plane is all source points are sent on sound source face sub- sound wave in mesh
The result being superimposed at punctuate.By Rayleigh-Suo Mofei diffraction integral formula, the acoustic pressure of any in target face can be obtained and be expressed as
(contribution of the part of no film to transmitted field)：
Wherein,ω is the angular frequency of incidence wave, and k is the wave vector of incidence wave.ρairFor the density of air,It is source point (x under rectangular coordinate systemS,yS,zS) between target point (x, y, z)
Distance, Ω1Indicate the integrating range of no film portion (cropped part).
And for there is the part of film, because film has the phase change of 180 degree to incident acoustic wave, equivalent to this part
Initial phase adds 180 degree, so showing in formula and being then：
Wherein, Ω2Indicate the integrating range of film portion.
Further, for strip structure, specific integrating range is substituted into formula, through simplification we can obtain as
Lower expression formula：
Under cylindrical coordinate, similar has：
Wherein,It is source point (r under cylindrical coordinateS,θS,zS) and target point
The distance between (r, θ, z).
Fig. 4 is sound wave focal path schematic diagram provided by the invention, as shown in Figure 4, black portions in figure
(not cutting part) represents initial phase as 180 degree, and blank parts represent initial phase as 0 (by part is reduced).According to
The principle that phase is mutually grown, the wave path-difference of two adjacent source points to focus should be the half of wavelength, i.e.,The π on the equal sign left side indicates film and does not have film portion in formula
The initial phase of phase-splitting difference 180 degree, so making the equal sign left side integrally equal to if π, then the phase difference of adjacent source points to focus is just
Just it is 2 π, such field is just superimposed without the part of counteracting completely.
The width l of bar patennMarked in figure, n represents which bar line to center, fcIt is to set
The focal length of meter, λ are to the wave length of sound in requisition for regulation and control.Due to l0=0, we can be obtained bySo width of fringe can be expressed as：
Specifically, n maximum N is bigger, focus strength is stronger, and corresponding whole image area is also bigger, is designed in Fig. 2
N illustrated exemplified by 6.fcIt is the focal length of design, can specifies according to demand, then lnAlso can accordingly change.
Fig. 5 and Fig. 6 is emulation and the experiment test design sketch of specific focusing effect respectively, plane sound wave normal incidence to pattern
The device surface of change, the sound wave for inciding device dash area (not cutting part) occur the phase change of 180 degree, incide sky
Phase change does not occur for white part (by part is reduced).Every bit in plane interferes superposition as sub- sound source, finally
Assemble in the focal point of design.From Fig. 5 and Fig. 6 intensity distribution it may be seen that there is an obvious speck in middle,
Here it is designed focus, therefore illustrate that experiment and simulated effect coincide very well.
Understood with reference to Fig. 5 and Fig. 6, after phase regulation and control film is cut into strip structure, the sound wave after transmission gathers plane
Jiao in focus illustrates that using the method for cutting out provided by the invention based on film sound wave flat focus can be caused.
Alternatively, when the sound wave space-focusing after the phase regulation and control film transmission after cutting is in focus, to described
Phase regulation and control film, which is cut, to be included：
Phase regulation and control film is cut to the loop configuration being symmetrically distributed, the ring radius r of nth bar loop wirenMeet：
Wherein, fcFor the focal length of design, λ is wave length of sound, and N is total loop wire number of loop configuration.
Fig. 7 is ring focusing design schematic diagram, similar with strip structure principle, and correspondingly, 1 represents to be cut in Fig. 7
Film is cut, 2 represent cutting mode, are analyzed with reference to above-mentioned strip structure Focusing Theory, in the loop configuration, the ring of the n-th ring bar
Radius rnMeet Only focused in one direction relative to bar shaped, should
Loop configuration has the effect of focusing in two dimensions.
It should be noted that because strip structure provided by the invention is consistent with the principle that loop configuration focuses on sound wave,
The bar line sequence number of strip structure can be then referred to by identical symbol n or the loop wire sequence number of loop configuration, N refer to strip structure
Total bar line number or loop wire structure total loop wire number.
The focusing effect analogous diagram of Fig. 8 and Fig. 9 respective annular structures, Fig. 8 are distributed for xy cross-sectional strengths, and Fig. 9 is that xz faces are strong
Degree distribution.It can be seen that the energy overwhelming majority is all concentrated at gonglion, and there is focusing on xy, two planes of xz.
Understood with reference to Fig. 8 and Fig. 9, after phase regulation and control film is cut into loop configuration, the sound wave after transmission gathers space
Jiao in focus illustrates that using the method for cutting out provided by the invention based on film sound wave space-focusing can be caused.
Figure 10 is the focus center energy intensification factor (being represented with dB) of emulation, and the legend in Figure 10 shows triangle and side
Shape represents to cut respectively pattern as bar shaped and the situation of loop configuration, and the energy of focus center is with striped quantity as seen from Figure 10
(or quantity of ring bar) increases and strengthened.Their rule is similar, and energy intensification factor is all with striped quantity into positive
Close, simply the intensification factor of loop configuration is bigger.
The present invention to that transmission phase can be changed into 180 degree film by being cut into specific pattern, to realize to sound wave
Passive regulation and control.Such as film is cut into bar paten (Fig. 2), it can be used for being focused on perpendicular to stripe direction sound wave.If
Film is cut into circular pattern (Fig. 7), can be used for strong to the plane inner focusing perpendicular to acoustic propagation direction, corresponding focus
Degree also can be stronger.
Optionally it is determined that phase regulates and controls film, including：Any density is more than to the metallic particles or nonmetallic of fibrous material
Particle and any modulus are less than the high polymer material of particle or soft material solution is uniformly mixed to get mixed solution；It will mix molten
Liquid, using electrostatic spinning technique, obtains the electrospun fibers with particle, and then accumulate shape by electrospun fibers as raw material
Into electrostatic spinning film, the electrostatic spinning film is the phase regulation and control film.
The mixed solution that the present invention obtains after being mixed by variable grain from different high polymer materials or soft material solution,
Different-diameter and the electrostatic spinning film of distribution can be prepared, due to the vibration of particle in film, so as to different frequency scope
Sound wave has 180 degree phase change, wherein, particle is more, and response frequency gets over low frequency；Film is thicker (being less than in the case of 1 millimeter),
Response frequency is also lower.
Alternatively, any density be more than fibrous material metallic particles or non-metallic particle be copper, iron, gold, silver, platinum, cobalt,
Nickel, lead and its corresponding oxide.
Alternatively, the area of electrostatic spinning film is with being used for the syringe of spinneret in the plane perpendicular to spinneret direction
Moving range is relevant, and moving range is bigger, and the area of electrostatic spinning film is bigger.The thickness of electrostatic spinning film and spinning time
Relevant, the spinning time is longer, and the thickness of electrostatic spinning film is thicker.The diameter of electrospun fibers is relevant with spinning voltage, spins
Filament voltage is bigger, and the diameter of electrospun fibers is smaller.Numbers of particles and particle and high polymer material in electrostatic spinning film
Or the mass ratio of soft material solution is relevant, the mass ratio is bigger, and contained numbers of particles is got in the electrostatic spinning film
It is more.
Phase provided by the invention regulation and control film is described in detail below in conjunction with specific embodiment：
Embodiment 1：
By the copper particle and polyvinyl alcohol (model of 0.5 micron~1.5 microns of diameter：PVA124) aqueous solution uniformly mixes,
The concentration of the polyvinyl alcohol water solution used is 7%~12%, and the mass ratio of copper particle and polyvinyl alcohol is according to the actual requirements
Specific regulation.
Wherein, the concentration of poly-vinyl alcohol solution in embodiments of the present invention can also be relatively stable dense of other dissolvings
Degree.
Copper particle is given in embodiments of the present invention：Polyvinyl alcohol is 1:1,1:2,1:4,1:8 four kinds of situations.It will mix molten
Liquid is as raw material, and using electrostatic spinning technique, the electrostatic spinning with particle that can obtain 0.5 micron~1.5 microns of diameter is fine
Dimension, is accumulated by electrospun fibers and forms electrostatic spinning film.
The different Cu particle and the mixing liquid of polyvinyl alcohol mass ratio configured according to the present invention, the copper being uniformly mixed
After particle/polyvinyl alcohol liquid, so that it may carry out electrostatic spinning using this as raw material.In embodiments of the present invention, change and receive
Distance, spinning voltage, different-diameter and the electrostatic spinning film of distribution can be obtained by injecting the parameters such as speed.In certain limit,
Spinning voltage is bigger, and fibre diameter is smaller.The speed injected needs and the speed of spinneret (mainly electric field force and surface tension etc.
The speed of silk after balance) mutually coordinate.The spinning condition of recommendation is：25 degrees Celsius of environment temperature, humidity 30%~45%, spinning electricity
9.7kV~11.7kV is pressed, injects speed 0.02mL/s~0.03mL/s.Manufactured film surface microscopic appearance scanning electron microscope (SEM) photograph is such as
Shown in Figure 11 to Figure 14, the mass ratio of copper particle and polyvinyl alcohol is respectively 1 during electrostatic spinning film production:8,1:4,1:2,1:1.
Various concentrations are more significantly different than numbers of particles as can be seen from Figure.Figure 15 to Figure 18 is respectively that the film of aforementioned proportion carries out sound wave
Transmit the result of test.It may be seen that they can in corresponding frequency range (gray area as shown in Figure 15-Figure 18)
Enough there is the phase change of 180 degree, and maintain higher transmissivity (being more than 80%).And with the increase of particle accounting,
Frequency range gradually moves to low frequency, therefore these films cover the frequency range from 3.8kHz to 24kHz.
Embodiment 2：
By the particles of lead oxide of 0.5 micron~1.5 microns of diameter and the dimethylformamide (DMF) of polyacrylonitrile (PAN)
Solution (PAN is not soluble in water, is dissolved in organic solvent such as DMF etc.) uniformly mixes, the DMF solution concentration of the polyacrylonitrile used for
8%~12%, and particles of lead oxide and polyacrylonitrile mass ratio are specifically adjusted according to the actual requirements.
Wherein, the concentration of polyacrylonitrile solution in embodiments of the present invention can also be relatively stable dense of other dissolvings
Degree.
Particles of lead oxide is provided in embodiments of the present invention：Polyacrylonitrile is 1:1,1:4,1:8,1:16 4 kinds of situations.Will
Mixed solution is as raw material, using electrostatic spinning technique, can obtain the electrostatic with particle of 0.5 micron~1.5 microns of diameter
Spinning fibre, accumulated by electrospun fibers and form electrostatic spinning film.
The different particles of lead oxide and the mixing liquid of polyacrylonitrile mass ratio configured according to the present invention, are uniformly mixed
Particles of lead oxide/polyacrylonitrile mixed liquor after, so that it may using this as raw material carry out electrostatic spinning.In embodiments of the present invention,
Change and receive distance, spinning voltage, different-diameter and the electrostatic spinning film of distribution can be obtained by injecting the parameters such as speed.Necessarily
In the range of, spinning voltage is bigger, and fibre diameter is smaller.The speed injected needs and the speed of spinneret (mainly electric field force and table
The speed of silk after the tension force isoequilibrium of face) mutually coordinate.The spinning condition of recommendation is：25 degrees Celsius of environment temperature, humidity 30%~
45%, spinning voltage 8.7kV~10.7kV, inject speed 0.03mL/s~0.04mL/s.
It is worthy of note that example 2 is particles used and soft material can be replaced mutually with example 1, if necessary to last
Film is not soluble in water, then just uses polymer not soluble in water such as polyacrylonitrile；If necessary to film there is magnetic just to use
The particle of magnetic such as ferroso-ferric oxide etc..
Based on the electrostatic spinning film of the present invention, its thickness is controllable, and the spinning time is longer, and thickness is thicker；The thickness of stable film forming
It is only 20 microns that degree is most thin, to be regulated and controled wavelength 1/650, significantly thinner than present level (about 1/250), can be applied more
Scene.Shearing on the electrostatic spinning film that the present invention is prepared is very convenient, and integral device is also very light, cost
It is relatively low, made beneficial to large-scale production.The implementation regulated and controled using the electrostatic spinning film of the present invention to acoustic phase
It is passive, there is advantage in energy consumption and portability.
The present invention has made phase regulation and control film based on electrostatic spinning technique.Due to the vibration of particle in film, can cause
The change of 180 degree occurs for acoustic wave transmission phase.The acoustic response frequency of film depends mainly on the density of spinning fibre and particle, mould
Ratio is measured, total particle accounts for the mass ratio with fibrous material, and thickness of film etc..And these parameters can by material mixture ratio and
Spinning parameter is adjusted.This film can large area continuously manufacture, further, this film can combine corresponding cutting
Technology is sheared and is fabricated to multi-functional device.Shearing on this fexible film is very convenient, and integral device
Also very light, cost is relatively low, is made beneficial to large-scale production.This mode is also passive, is had in energy consumption and portability
Advantage.
Alternatively, the film that transmission phase can be changed to 180 degree can make electrostatic spinning film or other
Meaning can change the device or material of transmission phase；The part that phase change does not occur is the part that cut (cutting) is fallen,
Can also can not arbitrarily change transmission phase, make sound wave completely through material.
Alternatively, the pattern of cutting is not limited to the two schemes described by Fig. 2, Fig. 7, and above-mentioned 2 kinds of schemes are simply poly-
The representative of burnt class pattern, the film provided using the present invention cut the guarantor so that the method that sound wave focuses on belongs to the present invention
In the range of shield.
Alternatively, such a regulation and control method is applied to fluid media (medium), i.e., whether in atmosphere either in water or other streams
Regulation and control in body are all applicable.
Alternatively, in addition to regulating and controlling to sound wave, such a method is also fully applicable for the tune to light wave or electromagnetic wave
Control, it is only necessary to which the material of light-wave transmission phase can be changed by being substituted for film.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (5)
- A kind of 1. method based on patterning tailoring technique focused sound waves, it is characterised in that including：Determine that phase regulates and controls film, the phase change 180 degree for the sound wave that the phase regulation and control film can be transmitted；Phase regulation and control film is cut so that the sound wave plane after phase regulation and control film transmission after cutting is gathered Jiao in focus or space-focusing in focus, wherein, by control cut size, make the sound wave behind clipping region and its The wave path-difference that the adjacent sound wave after non-clipping region transmits reaches focus is the half of wave length of sound.
- 2. the method according to claim 1 based on patterning tailoring technique focused sound waves, it is characterised in that when by cutting out When focus, phase regulation and control film is cut to be included the sound wave flat focus after phase regulation and control film transmission after cutting：Phase regulation and control film is cut into the strip structure that is symmetrically distributed, to symmetrical centre nth bar line in symmetrical The width l of the heartnMeet：<mrow> <msub> <mi>l</mi> <mi>n</mi> </msub> <mo>=</mo> <mfrac> <mi>&lambda;</mi> <mn>2</mn> </mfrac> <msqrt> <mrow> <msup> <mi>n</mi> <mn>2</mn> </msup> <mo>+</mo> <mfrac> <mrow> <mn>4</mn> <msub> <mi>nf</mi> <mi>c</mi> </msub> </mrow> <mi>&lambda;</mi> </mfrac> </mrow> </msqrt> <mo>,</mo> <mrow> <mo>(</mo> <mi>n</mi> <mo>=</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> <mo>,</mo> <mo>...</mo> <mo>,</mo> <mi>N</mi> <mo>)</mo> </mrow> </mrow>Wherein, fcFor the focal length of design, λ is wave length of sound, and N is the total line number of the strip structure side.
- 3. the method according to claim 1 based on patterning tailoring technique focused sound waves, it is characterised in that when by cutting out When focus, phase regulation and control film is cut to be included the sound wave space-focusing after phase regulation and control film transmission after cutting：Phase regulation and control film is cut to the loop configuration being symmetrically distributed, the ring radius r of nth bar loop wirenMeet：<mrow> <msub> <mi>r</mi> <mi>n</mi> </msub> <mo>=</mo> <mfrac> <mi>&lambda;</mi> <mn>2</mn> </mfrac> <msqrt> <mrow> <msup> <mi>n</mi> <mn>2</mn> </msup> <mo>+</mo> <mfrac> <mrow> <mn>4</mn> <msub> <mi>nf</mi> <mi>c</mi> </msub> </mrow> <mi>&lambda;</mi> </mfrac> </mrow> </msqrt> <mo>,</mo> <mrow> <mo>(</mo> <mi>n</mi> <mo>=</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> <mo>,</mo> <mo>...</mo> <mo>,</mo> <mi>N</mi> <mo>)</mo> </mrow> </mrow>Wherein, fcFor the focal length of design, λ is wave length of sound, and N is total loop wire number of the loop configuration.
- 4. the method based on patterning tailoring technique focused sound waves according to any one of claims 1 to 3, its feature exist In, determine that phase regulates and controls film, including：Any density is less than to the macromolecule material of particle more than the metallic particles or non-metallic particle of fibrous material and any modulus Material or soft material solution are uniformly mixed to get mixed solution；Using mixed solution as raw material, using electrostatic spinning technique, the electrospun fibers with particle are obtained, and then by Static Spinning Silk fiber is accumulated to form electrostatic spinning film, and the electrostatic spinning film is the phase regulation and control film.
- 5. the method according to claim 4 based on patterning tailoring technique focused sound waves, it is characterised in that described any It is copper, iron, gold, silver, platinum, cobalt, nickel, lead and its corresponding oxidation that density, which is more than the metallic particles of fibrous material or non-metallic particle, Thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711211037.9A CN107863097B (en) | 2017-11-28 | 2017-11-28 | Method for focusing sound wave based on patterned cutting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711211037.9A CN107863097B (en) | 2017-11-28 | 2017-11-28 | Method for focusing sound wave based on patterned cutting technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107863097A true CN107863097A (en) | 2018-03-30 |
| CN107863097B CN107863097B (en) | 2021-07-02 |
Family
ID=61702924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711211037.9A Active CN107863097B (en) | 2017-11-28 | 2017-11-28 | Method for focusing sound wave based on patterned cutting technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107863097B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775327A (en) * | 2005-12-01 | 2006-05-24 | 上海交通大学 | Wide focal domain phased array focusing ultrasonic transducer |
| CN1820804A (en) * | 2006-01-26 | 2006-08-23 | 上海交通大学 | Large focus domain forming method for phase control array focusing supersonics |
| EP1952763A1 (en) * | 2005-11-09 | 2008-08-06 | Japan Science and Technology Agency | Method and apparatus for measuring characteristic of object with acoustically induced electromagnetic wave |
| CN102721457A (en) * | 2012-05-29 | 2012-10-10 | 华中科技大学 | Ultrasonic speckle underwater steady-state vibration measuring method and measuring device |
| CN103191528A (en) * | 2013-03-21 | 2013-07-10 | 上海交通大学 | Ultrasound phase control array focus mode high-speed switching system and focus mode synthetic method |
| CN103650031A (en) * | 2011-03-30 | 2014-03-19 | Edaptms法国公司 | Method and apparatus for generating focused ultrasonic waves with surface modulation |
| CN104505088A (en) * | 2015-01-08 | 2015-04-08 | 江苏大学 | Acoustic wave focusing device based on intrinsic displacement mode |
| GB2520448A (en) * | 2013-05-31 | 2015-05-20 | Cerberus Black Ltd | Acoustic apparatus and operation |
| CN104751840A (en) * | 2015-04-14 | 2015-07-01 | 南京大学 | Acoustic material capable of achieving ultra-wide-band sound wave focusing |
| US9119955B2 (en) * | 2013-05-23 | 2015-09-01 | General Electric Company | System and method for focusing of high intensity focused ultrasound based on magnetic resonance—acoustic radiation force imaging feedback |
| CN105895074A (en) * | 2016-04-11 | 2016-08-24 | 南京大学 | Acoustic unidirectional hyper surface |
| CN106448650A (en) * | 2016-07-04 | 2017-02-22 | 南京大学 | Method for low-frequency sound wave directive propagation by employing sub-wavelength space folding structure metamaterial |
| CN107085039A (en) * | 2017-04-20 | 2017-08-22 | 苏州博昇科技有限公司 | A kind of method for the Air Coupling ultrasound detection signal intensity for increasing composite |
| CN107293283A (en) * | 2017-06-15 | 2017-10-24 | 南开大学 | A kind of super surface of acoustics and sound wave focusing arrangement |
| US20170303887A1 (en) * | 2016-04-25 | 2017-10-26 | Wisconsin Alumni Research Foundation | Head Mounted Microphone Array for Tinnitus Diagnosis |
-
2017
- 2017-11-28 CN CN201711211037.9A patent/CN107863097B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1952763A1 (en) * | 2005-11-09 | 2008-08-06 | Japan Science and Technology Agency | Method and apparatus for measuring characteristic of object with acoustically induced electromagnetic wave |
| CN1775327A (en) * | 2005-12-01 | 2006-05-24 | 上海交通大学 | Wide focal domain phased array focusing ultrasonic transducer |
| CN1820804A (en) * | 2006-01-26 | 2006-08-23 | 上海交通大学 | Large focus domain forming method for phase control array focusing supersonics |
| CN103650031A (en) * | 2011-03-30 | 2014-03-19 | Edaptms法国公司 | Method and apparatus for generating focused ultrasonic waves with surface modulation |
| CN102721457A (en) * | 2012-05-29 | 2012-10-10 | 华中科技大学 | Ultrasonic speckle underwater steady-state vibration measuring method and measuring device |
| CN103191528A (en) * | 2013-03-21 | 2013-07-10 | 上海交通大学 | Ultrasound phase control array focus mode high-speed switching system and focus mode synthetic method |
| US9119955B2 (en) * | 2013-05-23 | 2015-09-01 | General Electric Company | System and method for focusing of high intensity focused ultrasound based on magnetic resonance—acoustic radiation force imaging feedback |
| GB2520448A (en) * | 2013-05-31 | 2015-05-20 | Cerberus Black Ltd | Acoustic apparatus and operation |
| CN104505088A (en) * | 2015-01-08 | 2015-04-08 | 江苏大学 | Acoustic wave focusing device based on intrinsic displacement mode |
| CN104751840A (en) * | 2015-04-14 | 2015-07-01 | 南京大学 | Acoustic material capable of achieving ultra-wide-band sound wave focusing |
| CN105895074A (en) * | 2016-04-11 | 2016-08-24 | 南京大学 | Acoustic unidirectional hyper surface |
| US20170303887A1 (en) * | 2016-04-25 | 2017-10-26 | Wisconsin Alumni Research Foundation | Head Mounted Microphone Array for Tinnitus Diagnosis |
| CN106448650A (en) * | 2016-07-04 | 2017-02-22 | 南京大学 | Method for low-frequency sound wave directive propagation by employing sub-wavelength space folding structure metamaterial |
| CN107085039A (en) * | 2017-04-20 | 2017-08-22 | 苏州博昇科技有限公司 | A kind of method for the Air Coupling ultrasound detection signal intensity for increasing composite |
| CN107293283A (en) * | 2017-06-15 | 2017-10-24 | 南开大学 | A kind of super surface of acoustics and sound wave focusing arrangement |
Non-Patent Citations (6)
| Title |
|---|
| HE GAO ET AL: "Acoustic focusing by symmetrical self-bending beams with phase modulations", 《APPLIED PHYSICS LETTERS》 * |
| XUE JIANG ER AL: "Acoustic one-way metasurfaces: Asymmetric Phase Modulation of Sound by Subwavelength Layer", 《SCIENTIFIC REPORTS》 * |
| YONG LI ET AL: "Reflected wavefront manipulation based on ultrathin planar acoustic metasurfaces", 《SCIENTIFIC REPORTS》 * |
| 唐昆: "超表面对声波波前的调控研究", 《中国博士学位论文全文数据库 基础科学辑》 * |
| 沈亚西等: "声学超模态传输特性研究", 《声学技术》 * |
| 祝雪丰等: "负折射聚焦相关研究", 《声学技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107863097B (en) | 2021-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108062947B (en) | Method for forming acoustic vortex based on patterned cutting technology | |
| CN108062948A (en) | A kind of method based on patterning tailoring technique regulation and control sound wave | |
| Peng et al. | Acoustic far-field focusing effect for two-dimensional graded negative refractive-index sonic crystals | |
| Yuan et al. | Broadband directional acoustic waveguide with high efficiency | |
| Xu et al. | Tunable low-frequency and broadband acoustic metamaterial absorber | |
| Ye et al. | Focusing of spoof surface-acoustic-waves by a gradient-index structure | |
| Zhu et al. | Reconfigurable origami-inspired metamaterials for controllable sound manipulation | |
| CN101971247A (en) | System and method for acoustic focusing hardware and implementations | |
| Jia et al. | Spatial separation of spoof surface acoustic waves on the graded groove grating | |
| Bordiga et al. | Prestress tuning of negative refraction and wave channeling from flexural sources | |
| Liu et al. | Magnetically controlled multifunctional membrane acoustic metasurface | |
| Climente et al. | Scattering of flexural waves from an N-beam resonator in a thin plate | |
| Qian et al. | Enhanced directional acoustic emission based on anisotropic metamaterials | |
| CN112946882A (en) | Method for generating light tube focal field with customizable space direction and length | |
| Jin et al. | Ultrathin planar metasurface-based acoustic energy harvester with deep subwavelength thickness and mechanical rigidity | |
| Pfleging et al. | Femtosecond laser processing of thick film cathodes and its impact on lithium-ion diffusion kinetics | |
| Tang et al. | Nonplanar acoustic metasurface for focusing | |
| CN111416593A (en) | Design method of surface acoustic wave chip for enhancing standing wave sound field characteristics | |
| Wang et al. | Ultrathin broadband acoustic reflection metasurface based on meta-molecule clusters | |
| CN107863097A (en) | A kind of method based on patterning tailoring technique focused sound waves | |
| Cai et al. | Compact acoustic double negative metamaterial based on coexisting local resonances | |
| Zhao et al. | Membrane-type acoustic metamaterials with tunable frequency by a compact magnet | |
| Fan et al. | Flow-permeable and tunable metalens for subdiffraction waterborne-sound focusing | |
| Lu et al. | Non‐Hermitian Topological Phononic Metamaterials | |
| Chen et al. | Hybrid acousto-elastic metamaterials for simultaneous control of low-frequency sound and vibration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |