CN115753564A - Travelling wave sound field-based microsphere multi-mode control device and working method thereof - Google Patents
Travelling wave sound field-based microsphere multi-mode control device and working method thereof Download PDFInfo
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- CN115753564A CN115753564A CN202211419176.1A CN202211419176A CN115753564A CN 115753564 A CN115753564 A CN 115753564A CN 202211419176 A CN202211419176 A CN 202211419176A CN 115753564 A CN115753564 A CN 115753564A
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Abstract
The invention discloses a travelling wave sound field-based microsphere multi-mode control device and a working method thereof, wherein the travelling wave sound field-based microsphere multi-mode control device comprises a base, a vibrating body, a first fixed seat, a second fixed seat, a first fixed nut, a second fixed nut, a PDMS (polydimethylsiloxane) module and a piezoelectric driving module; the piezoelectric driving module comprises four migration driving units and two sorting driving units. The four migration driving units are simultaneously applied with simple harmonic voltage signals to excite out-of-plane bending deformation of the vibrator and couple out non-resonant traveling wave deformation of the vibrator for migration; sorting is performed by applying simple harmonic voltage signals to the two sorting driving units to excite out-of-plane bending deformation of the vibrating body. The invention is used for realizing the repeated power-off positioning, electrified long-distance migration and classified control of the microspheres during the detection of the microsphere microscope, so as to achieve the effect of controlling the microspheres in a nondestructive and non-contact way and avoid the secondary damage when the microspheres are positioned, moved and classified in a hard contact way.
Description
Technical Field
The invention relates to the field of micro-manipulation and micro-particle rapid screening, in particular to a micro-sphere multi-mode manipulation device based on a traveling wave sound field and a working method thereof.
Background
The laser confinement nuclear fusion ICF takes high-power and high-energy density laser as a driving source, and adopts a spherical implosion pressurization technology to enable nuclear fuel in a spherical target pellet to reach an ignition condition, so that a self-sustained thermonuclear reaction is formed. ICF is expected to provide a clean, pollution-free energy source for human beings. The ICF experiment has strict requirements on the quality of hollow microspheres (target pellets) serving as nuclear fuel containers in the aspects of geometric parameters, surface defects and the like, and the quality of the target pellets directly influences the success or failure of the ICF targeting experiment. The target pill has the characteristics of small size (the diameter is 100 to 1000 mu m), fragile structure, strong viscosity and the like, so that the detection of the target pill is not challenged. At present, the detection devices used for measuring the geometric parameters of the microspheres include an X-ray apparatus, a white light interferometer, an atomic force microscope and the like. The measurement precision of the instruments is high (can reach micron-scale or even nanometer-scale). Because the target pellet is spherical, multiple movements and overturning of the target pellet are required to realize the complete characterization of the morphology of the target pellet. However, in these detection devices, the target pellet is controlled to move by the multi-degree-of-freedom moving platform, and the hard contact manner is very likely to cause secondary damage to the surface of the target pellet when the posture of the target pellet is adjusted, so that the detection efficiency and the qualification rate of the target pellet are low. The micro-control technology using the sound wave as the driving source has the advantages of high biocompatibility, stable micro-scale control and the like, and means that the micro-control technology can be applied to nondestructive detection and screening of microspheres to realize complete morphology characterization of target pills through multiple positioning, and target pills with different masses are gathered in different areas through matching and switching of different vibration modes, so that the requirements of nondestructive detection and high-precision control of the target pill are met.
Disclosure of Invention
The invention aims to solve the technical problem of providing a travelling wave sound field-based microsphere multi-mode control device and a working method thereof aiming at the defects related to the background technology.
The invention adopts the following technical scheme for solving the technical problems:
a microsphere multi-mode control device based on a traveling wave sound field comprises a base, a vibrating body, a first fixed seat, a second fixed seat, a first fixed nut, a second fixed nut, a PDMS module and a piezoelectric driving module;
the first fixing seat and the second fixing seat are arranged on the base, have the same structure and comprise bases and studs, wherein the bases are cylinders, and the lower end faces of the bases are fixedly connected with the bases; the lower end of the stud is vertically and fixedly connected with the upper end face of the base;
the vibrating body is a cuboid, a first through hole and a second through hole which are matched with the studs of the first fixing seat and the second fixing seat are respectively arranged at two ends of the upper surface of the vibrating body, and the vibrating body is symmetrical about a connecting line of circle centers of the first through hole and the second through hole;
the studs of the first fixing seat and the second fixing seat respectively pass through the first through hole and the second through hole and then are connected with the corresponding threads of the first fixing nut and the second fixing nut, and the vibrating body is fixed on the bases of the first fixing seat and the second fixing seat;
the base is fixed on the air floatation platform, so that the vibrating body is horizontal;
an installation groove for placing the PDMS module is formed in the upper end face of the vibration body between the first through hole and the second through hole, and the installation groove is symmetrical about a connection line of circle centers of the first through hole and the second through hole;
the PDMS module is a cuboid which has the same shape as the mounting groove of the vibrating body, is made of PDMS material and is fixed in the mounting groove through PDMS glue;
a migration flow channel and a second outlet flow channel are arranged on the upper surface of the PDMS on the connecting line of the circle centers of the first through hole and the second through hole, and a separation flow channel is arranged between the migration flow channel and the second outlet flow channel; the transfer flow channel is positioned at the upstream of the sorting flow channel; the separation flow channel is vertical to the migration flow channel, one side of the separation flow channel is communicated with the migration flow channel, and the other side of the separation flow channel is communicated with the second outlet flow channel; a first outlet flow channel and a third outlet flow channel are symmetrically arranged on the upper surface of the PDMS at two sides of the second outlet flow channel, and the first outlet flow channel and the third outlet flow channel are respectively communicated with two ends of the sorting flow channel;
the lower surface of the vibrating body is sequentially provided with a first groove, a second groove, a third groove and a fourth groove from upstream to downstream along the length direction of the vibrating body; the first to fourth grooves are all perpendicular to the migration flow channel, the mounting groove is equally divided into five equal parts which are symmetrical about a straight line where the migration flow channel is located;
a first through groove and a second through groove are respectively formed in the lower surface of the vibrating body on two sides of the sorting flow channel; the bottom surface of the mounting groove is respectively provided with a fifth groove and a sixth groove which are parallel to each other at two ends of the separation flow channel; two ends of the fifth groove and the sixth groove are vertically connected with the first through groove and the second through groove respectively to form a flexible hinge;
the piezoelectric driving module comprises first to fourth migration driving units and first to second separation driving units;
the first to fourth migration driving units have the same structure and respectively comprise 2n piezoelectric ceramic pieces which are sequentially stacked, the 2n piezoelectric ceramic pieces are polarized along the thickness direction, and the polarization directions of the adjacent piezoelectric ceramic pieces are opposite;
the first to fourth migration driving units are arranged in the first to fourth grooves in a one-to-one correspondence mode, and the piezoelectric ceramic plates in the first to fourth migration driving units are all perpendicular to the migration flow channels;
the first sorting driving unit, the second sorting driving unit and the third sorting driving unit are all piezoelectric stacks, and are symmetrically adhered to the lower surface of the sorting flow channel of the vibrating body about a connecting line of circle centers of the first through hole and the second through hole.
As a further optimization scheme of the travelling wave sound field-based microsphere multi-mode control device, the base is a rectangular plate, and through holes for fixing the air floating platform are formed in four corners of the rectangular plate.
As a further optimization scheme of the travelling wave sound field-based microsphere multi-mode control device, n is 2.
The invention also discloses an operation and control method of the microsphere multi-mode operation and control device based on the traveling wave sound field, which comprises the following steps:
step 1), injecting a carrier fluid into the upstream of the migration flow channel and releasing microspheres;
step 2), applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, wherein the first to fourth simple harmonic voltage signals are identical in amplitude and frequency and sequentially increased in phase by pi/2, and coupling out non-resonant traveling wave deformation of the vibration body to enable the microspheres to advance along the migration flow channel along with the fluid under the action of acoustic radiation force and drag force generated by acoustic current;
step 3), powering off the first to fourth migration driving units to position the microspheres, and carrying out morphology detection on the microspheres by using a microscope to obtain the morphology of the microspheres in the current posture;
step 4), repeating the steps 2) to 3) until the surface of the microsphere is completely characterized;
step 5), applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, and powering off the first to fourth migration driving units after the microspheres enter the sorting flow channel;
step 6), judging the quality condition of the microspheres, and sorting the microspheres according to the quality condition;
step 6.1), if the microspheres are inferior microspheres, applying a preset fifth simple harmonic voltage signal to the first separation driving unit to excite out-of-plane bending deformation of a vibrating body among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the separation flow channel, so that the microspheres move to an inlet of the first outlet flow channel;
step 6.2), if the microspheres are medium-mass microspheres, applying a preset sixth simple harmonic voltage signal to the second separation driving unit to excite out-of-plane bending deformation of a vibrating body among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the separation flow channel, so that the microspheres move to an inlet of a third outlet flow channel;
step 6.3), if the microspheres are high-quality microspheres, the first separation driving unit and the second separation driving unit are not driven, and the microspheres are positioned at the inlet of the second outlet flow channel;
and 7) applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, so that the microspheres continuously advance to the outlet flow channels corresponding to the sorted microspheres.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
1. the equipment is simple, the price is low, and the cost of a common screening system can be reduced;
2. the piezoelectric-excited micro-control device can realize the lossless and non-contact control of the microspheres, and the control means comprises: positioning control, migration control and sorting control;
3. the microspheres are controlled to realize different motions, and simultaneously, the advantages and disadvantages of the microspheres such as the size, the surface appearance and the like are analyzed by using a microscope, so that the microspheres with different surface qualities are controlled to be gathered in different areas, and the microspheres are efficiently and accurately screened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the first and second fixing bases and the base;
FIG. 3 is a schematic view of the structure of the vibrator, PDMS module, and piezoelectric driving module;
FIG. 4 is a top view of a PDMS module according to the present invention;
FIG. 5 is a schematic view of the structure of the vibrator and the piezoelectric driving module in cooperation with each other according to the present invention;
FIG. 6 is a rear view of the vibrator and piezoelectric driver module in accordance with the present invention;
FIG. 7 is a schematic view showing the polarization direction of the linear migration piezoelectric element group in the present invention;
FIG. 8 is an excitation diagram of a traveling wave bent out of a vibrator plane according to the present invention;
FIG. 9 is a diagram showing the mode shape of an out-of-plane bending traveling wave of a transducer according to the present invention;
FIG. 10 is a sound field diagram of a vibrator out-of-plane bending traveling wave in the present invention;
fig. 11 is a schematic view showing the mode shape of out-of-plane bending deformation of the vibrating body excited by the first sorting drive unit and the manner of applying an electric signal in the present invention;
fig. 12 is a schematic view of the mode shape of the out-of-plane bending deformation of the vibrating body excited by the second separation driving unit and the mode of applying an electric signal in the present invention.
In the figure, 1-base, 2-vibrating body, 3-first fixed seat, 4-second fixed seat, 5-first fixed nut, 6-second fixed nut, 7-PDMS module, 8-first migration driving unit, 9-migration flow channel, 10-sorting flow channel, 11-first outlet flow channel, 12-second outlet flow channel, 13-third outlet flow channel, 14-first through groove, 15-second through groove, 16-fifth groove, 17-second sorting driving unit, and 18-first sorting driving unit.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings as follows:
the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components and/or sections, these elements, components and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, and/or section from another. Thus, a first element, component, and/or section discussed below could be termed a second element, component, or section without departing from the teachings of the present invention.
As shown in fig. 1, the invention discloses a traveling wave sound field-based microsphere multi-mode control device, which comprises a base, a vibrating body, a first fixing seat, a second fixing seat, a first fixing nut, a second fixing nut, a PDMS module and a piezoelectric driving module;
as shown in fig. 2, the first fixing seat and the second fixing seat are both arranged on a base, have the same structure, and both comprise a base and a stud, wherein the base is a cylinder, and the lower end surface of the base is fixedly connected with the base; the lower end of the stud is vertically and fixedly connected with the upper end face of the base;
as shown in fig. 3, the vibrating body is a cuboid, a first through hole and a second through hole which are matched with the studs of the first fixing seat and the second fixing seat are respectively arranged at two ends of the upper surface of the vibrating body, and the vibrating body is symmetrical about a connection line of the centers of the first through hole and the second through hole;
the studs of the first fixing seat and the second fixing seat respectively pass through the first through hole and the second through hole and then are connected with the corresponding threads of the first fixing nut and the second fixing nut, and the vibrating body is fixed on the bases of the first fixing seat and the second fixing seat;
the base is fixed on the air floatation platform, so that the vibrating body is horizontal;
an installation groove for placing the PDMS module is formed in the upper end face of the vibrating body between the first through hole and the second through hole, and the installation groove is symmetrical about a connection line of circle centers of the first through hole and the second through hole;
the PDMS module is a cuboid which has the same shape as the mounting groove of the vibrating body, is made of PDMS material and is fixed in the mounting groove through PDMS glue;
as shown in fig. 4, a migration flow channel and a second outlet flow channel are arranged on the upper surface of the PDMS on a connection line of the centers of the first through hole and the second through hole, and a separation flow channel is arranged between the migration flow channel and the second outlet flow channel; the transfer flow channel is located upstream of the sorting flow channel; the separation flow channel is vertical to the migration flow channel, one side of the separation flow channel is communicated with the migration flow channel, and the other side of the separation flow channel is communicated with the second outlet flow channel; a first outlet flow channel and a third outlet flow channel are symmetrically arranged on the upper surface of the PDMS at two sides of the second outlet flow channel, and the first outlet flow channel and the third outlet flow channel are respectively communicated with two ends of the sorting flow channel;
as shown in fig. 5 and 6, the lower surface of the vibrating body is provided with first to fourth grooves in sequence from upstream to downstream along the length direction of the vibrating body; the first groove, the second groove, the third groove, the fourth groove and the installation groove are perpendicular to the migration flow channel, are symmetrical relative to a straight line where the migration flow channel is located, and are equally divided into five equal parts;
a first through groove and a second through groove are respectively formed in the lower surface of the vibrating body on two sides of the sorting flow channel; the bottom surface of the mounting groove is respectively provided with a fifth groove and a sixth groove which are parallel to each other at two ends of the separation flow channel; two ends of the fifth groove and the sixth groove are vertically connected with the first through groove and the second through groove respectively to form a flexible hinge;
the piezoelectric driving module comprises first to fourth migration driving units and first to second separation driving units;
the first to fourth migration driving units have the same structure and each include 2n piezoelectric ceramic sheets stacked in sequence, the 2n piezoelectric ceramic sheets are polarized along the thickness direction, and the polarization directions of the adjacent piezoelectric ceramic sheets are opposite, as shown in fig. 7;
the first to fourth migration driving units are arranged in the first to fourth grooves in a one-to-one correspondence mode, and the piezoelectric ceramic plates in the first to fourth migration driving units are all perpendicular to the migration flow channels;
the first sorting driving unit, the second sorting driving unit and the third sorting driving unit are all piezoelectric stacks, and are symmetrically adhered to the lower surface of the sorting flow channel of the vibrating body about a connecting line of circle centers of the first through hole and the second through hole.
The base is preferably a rectangular plate, and through holes for fixing the air floating platform are formed in four corners of the rectangular plate; n preferably takes 2.
The planning of the microsphere motion path on the PDMS module avoids the problem that the required vibration mode cannot be excited due to the fact that a flow channel is directly planned on a vibrator, and meanwhile, the problem that the microsphere bearing liquid leaks due to the fact that a separation excitation structure is constructed can be prevented.
The first to fourth grooves can realize the positioning of the piezoelectric ceramic piece when the piezoelectric ceramic piece is pasted, and can amplify the piezoelectric ceramic piece at d through the constraint effect on the piezoelectric ceramic piece 33 The deformation effect during the mode vibration, and then reach the effect of enlargiing the amplitude.
The PDMS module and the vibrator form a vibrator, and simple harmonic voltage signals with different phases are applied to the first to fourth migration driving units, so that out-of-plane bending deformation of the traveling wave of the vibrator in the length direction of the migration flow channel can be excited, as shown in fig. 8; the mode simulation of the vibrator can obtain a mode shape diagram of the out-of-plane bending deformation of the vibrator in the length direction, and the antinode is advanced along with the increase of time, as shown in fig. 9; the sound field analysis of the vibrator can obtain a sound pressure diagram, and the pitch line is advanced along with the increase of time, as shown in fig. 10. Simple harmonic voltage signals are applied to the first sorting driving unit, the second sorting driving unit and the third sorting driving unit, and out-of-plane bending deformation of vibrators among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the sorting flow channel can be excited. The out-of-plane bending deformation excited by applying the simple harmonic voltage signal to the first sorting driving unit is shown in fig. 11, and the out-of-plane bending deformation excited by applying the simple harmonic voltage signal to the first sorting driving unit is shown in fig. 12.
The method comprises the steps that the microspheres with the size from micron to millimeter are controlled to realize multiple power-off positioning, long-distance migration and classification in a PDMS flow channel, the microspheres are subjected to micro-morphology detection under observation of a microscope after being subjected to power-off positioning every time, the microspheres are further moved to the flow channel outlet through the connection of voltage after detection is completed, and high-quality, medium-quality and poor-quality microspheres are classified and controlled according to the detection result of the microscope at the position of the sorting flow channel, so that the microspheres with different qualities are gathered at different outlets.
The invention also discloses a control method of the microsphere multi-mode control device based on the traveling wave sound field, which comprises the following steps:
step 1), injecting a carrier fluid into the upstream of the migration flow channel and releasing microspheres;
step 2), applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, wherein the first to fourth simple harmonic voltage signals are identical in amplitude and frequency and sequentially increased in phase by pi/2, and the first to fourth simple harmonic voltage signals are coupled out of the non-resonant traveling wave deformation of the vibration body, so that the microspheres advance along the migration flow channel along with the fluid under the action of the acoustic radiation force and the drag force generated by the acoustic current;
step 3), powering off the first to fourth migration driving units to position the microspheres, and carrying out morphology detection on the microspheres by using a microscope to obtain the morphology of the microspheres in the current posture;
step 4), repeating the steps 2) to 3) until the surface of the microsphere is completely characterized;
step 5), applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, and powering off the first to fourth migration driving units after the microspheres enter the sorting flow channel;
step 6), judging the quality condition of the microspheres, and sorting the microspheres according to the quality condition;
step 6.1), if the microspheres are inferior microspheres, applying a preset fifth simple harmonic voltage signal to the first separation driving unit to excite out-of-plane bending deformation of a vibrating body among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the separation flow channel, so that the microspheres move to an inlet of the first outlet flow channel;
step 6.2), if the microspheres are medium-quality microspheres, applying a preset sixth simple harmonic voltage signal to the second sorting driving unit to excite out-of-plane bending deformation of a vibrating body among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the sorting flow channel, so that the microspheres move to an inlet of a third outlet flow channel;
step 6.3), if the microspheres are high-quality microspheres, the first separation driving unit and the second separation driving unit are not driven, and the microspheres are positioned at the inlet of the second outlet flow channel;
and 7) applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, so that the microspheres continuously advance to the outlet flow channels corresponding to the sorted microspheres.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A microsphere multi-mode control device based on a traveling wave sound field is characterized by comprising a base, a vibrating body, a first fixed seat, a second fixed seat, a first fixed nut, a second fixed nut, a PDMS module and a piezoelectric driving module;
the first fixing seat and the second fixing seat are arranged on the base, have the same structure and comprise bases and studs, wherein the bases are cylinders, and the lower end faces of the bases are fixedly connected with the bases; the lower end of the stud is vertically and fixedly connected with the upper end face of the base;
the vibrating body is a cuboid, a first through hole and a second through hole which are matched with the studs of the first fixing seat and the second fixing seat are respectively arranged at two ends of the upper surface of the vibrating body, and the vibrating body is symmetrical about a connecting line of circle centers of the first through hole and the second through hole;
the studs of the first fixing seat and the second fixing seat respectively pass through the first through hole and the second through hole and then are connected with the corresponding threads of the first fixing nut and the second fixing nut, and the vibrating body is fixed on the bases of the first fixing seat and the second fixing seat;
the base is fixed on the air floatation platform, so that the vibrating body is horizontal;
an installation groove for placing the PDMS module is formed in the upper end face of the vibrating body between the first through hole and the second through hole, and the installation groove is symmetrical about a connection line of circle centers of the first through hole and the second through hole;
the PDMS module is a cuboid which has the same shape with the mounting groove of the vibration body, is made of PDMS material and is fixed in the mounting groove through PDMS glue;
a migration flow channel and a second outlet flow channel are arranged on the upper surface of the PDMS on the connecting line of the circle centers of the first through hole and the second through hole, and a separation flow channel is arranged between the migration flow channel and the second outlet flow channel; the transfer flow channel is located upstream of the sorting flow channel; the separation flow channel is vertical to the migration flow channel, one side of the separation flow channel is communicated with the migration flow channel, and the other side of the separation flow channel is communicated with the second outlet flow channel; a first outlet flow channel and a third outlet flow channel are symmetrically arranged on the upper surface of the PDMS at two sides of the second outlet flow channel, and the first outlet flow channel and the third outlet flow channel are respectively communicated with two ends of the sorting flow channel;
the lower surface of the vibrating body is sequentially provided with a first groove, a second groove, a third groove and a fourth groove from upstream to downstream along the length direction of the vibrating body; the first to fourth grooves are all perpendicular to the migration flow channel, the mounting grooves are equally divided into five equal parts which are symmetrical about the straight line where the migration flow channel is located;
a first through groove and a second through groove are respectively formed in the lower surface of the vibrating body on two sides of the sorting flow channel; the bottom surface of the mounting groove is respectively provided with a fifth groove and a sixth groove which are parallel to each other at two ends of the sorting flow channel; two ends of the fifth groove and the sixth groove are vertically connected with the first through groove and the second through groove respectively to form a flexible hinge;
the piezoelectric driving module comprises first to fourth migration driving units and first to second separation driving units;
the first to fourth migration driving units have the same structure and respectively comprise 2n piezoelectric ceramic pieces which are sequentially stacked, the 2n piezoelectric ceramic pieces are polarized along the thickness direction, and the polarization directions of the adjacent piezoelectric ceramic pieces are opposite;
the first to fourth migration driving units are arranged in the first to fourth grooves in a one-to-one correspondence manner, and the piezoelectric ceramic plates in the first to fourth migration driving units are all perpendicular to the migration flow channels;
the first sorting driving unit, the second sorting driving unit and the third sorting driving unit are all piezoelectric stacks, and are symmetrically adhered to the lower surface of the sorting flow channel of the vibrating body about a connecting line of circle centers of the first through hole and the second through hole.
2. The traveling wave acoustic field-based microsphere multimode operating device according to claim 1, wherein the base is a rectangular plate, and through holes for fixing the air floating platform are formed in four corners of the rectangular plate.
3. The traveling wave acoustic field-based microsphere multimode manipulation device according to claim 1, wherein n is 2.
4. The method for controlling the microsphere multimode control device based on the traveling wave acoustic field of claim 1, comprising the following steps:
step 1), injecting a carrier fluid into the upstream of the migration flow channel and releasing microspheres;
step 2), applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, wherein the first to fourth simple harmonic voltage signals are identical in amplitude and frequency and sequentially increased in phase by pi/2, and coupling out non-resonant traveling wave deformation of the vibration body to enable the microspheres to advance along the migration flow channel along with the fluid under the action of acoustic radiation force and drag force generated by acoustic current;
step 3), powering off the first to fourth migration driving units to position the microspheres, and carrying out morphology detection on the microspheres by using a microscope to obtain the morphology of the microspheres in the current posture;
step 4), repeating the steps 2) to 3) until the surface of the microsphere is completely characterized;
step 5), applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, and powering off the first to fourth migration driving units after the microspheres enter the sorting flow channel;
step 6), judging the quality condition of the microspheres, and sorting the microspheres according to the quality condition;
step 6.1), if the microspheres are inferior microspheres, applying a preset fifth simple harmonic voltage signal to the first separation driving unit to excite out-of-plane bending deformation of a vibrating body among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the separation flow channel, so that the microspheres move to an inlet of the first outlet flow channel;
step 6.2), if the microspheres are medium-quality microspheres, applying a preset sixth simple harmonic voltage signal to the second sorting driving unit to excite out-of-plane bending deformation of a vibrating body among the first through groove, the second through groove, the fifth groove and the sixth groove in the length direction of the sorting flow channel, so that the microspheres move to an inlet of a third outlet flow channel;
step 6.3), if the microspheres are high-quality microspheres, the first sorting driving unit and the second sorting driving unit are not driven, and the microspheres are positioned at the inlet of the second outlet flow channel;
and 7) applying first to fourth simple harmonic voltage signals to the first to fourth migration driving units respectively, so that the microspheres continuously advance to the outlet flow channels corresponding to the sorted microspheres.
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| CN202211419176.1A CN115753564A (en) | 2022-11-14 | 2022-11-14 | Travelling wave sound field-based microsphere multi-mode control device and working method thereof |
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| CN202211419176.1A CN115753564A (en) | 2022-11-14 | 2022-11-14 | Travelling wave sound field-based microsphere multi-mode control device and working method thereof |
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