CN206790371U - Microlayer model active preparation facilities based on piezoelectricity singing piece disturbance - Google Patents
Microlayer model active preparation facilities based on piezoelectricity singing piece disturbance Download PDFInfo
- Publication number
- CN206790371U CN206790371U CN201720578342.0U CN201720578342U CN206790371U CN 206790371 U CN206790371 U CN 206790371U CN 201720578342 U CN201720578342 U CN 201720578342U CN 206790371 U CN206790371 U CN 206790371U
- Authority
- CN
- China
- Prior art keywords
- resonator
- singing piece
- piezoelectricity singing
- disturbance
- model
- 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.)
- Active
Links
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model discloses a kind of microlayer model active preparation facilities based on piezoelectricity singing piece disturbance, belong to microfluidic art, the device is mainly connected by piezoelectricity singing piece by resonator with syringe needle, piezoelectricity singing piece is made up of piezoelectric ceramics and metal substrate, the metal substrate is Nian Jie with resonator, and resonator is Nian Jie with the through hole on syringe needle again；The piezoelectricity singing piece of vibration drives flowing or air vibration in resonator, and then by the pipeline for disturbing embedded flow focusing.When adding the disturbance of piezoelectricity singing piece, vibrational energy is transferred to the fluid in pipeline by resonator, vibrational energy realizes the effect of disturbance during taper and jet column is formed, and the utility model controls the broken caused microlayer model size of jet column, generation frequency by controlling driving voltage, driving frequency or the drive waveforms of piezoelectricity singing piece.
Description
Technical field
It the utility model is related to microfluidic art, more particularly to a kind of microlayer model master based on piezoelectricity singing piece disturbance
Dynamic preparation facilities.
Background technology
The forming process of droplet intuitively understands the complexity of microfluidic process very much.Relevant with surface tension is relatively small
Power the non-linear of height is produced in droplet generation process and to external disturbance quite sensitive.Drop is formed from Continuous Liquid Phase,
Need to introduce energy and then be converted into the surface energy after droplet is formed.When this energy is derived only from Fluid pressure, the external world is had no
During energy input, for passive control；It is active control when having outside energy input on the contrary, in droplet generating process.Passive control
The classical architecture of system is：T-shaped and flow focusing type.The passive control of both structures mainly by change flow or pressure come
Realize.The greatest problem passively controlled is：Response time is oversize, usually several seconds or even a few minutes.The longer response time
It is largely determined by relatively large fluid resistance.Under the flow and pressure pre-set, if now expect one it is specific
The droplet of size, only way are exactly the shape for adjusting liquid character and passage.According to the difference of outside input kind of energy,
The generation of droplet active control is broadly divided into：Thermal control, magnetic control, gas drive/liquid control system, piezoelectricity control etc..Due to Piezoelectric Driving
With response quickly, 200 μ s are typically can reach, so preparing the research of microlayer model by increasingly for piezoelectricity Active spurring
More concerns, the introducing of piezoelectricity disturbance at present introduce piezoelectric disc, piezoelectricity mainly for micro-fluidic chip such as on inlet pipeline
The vibration of twin lamella or piezoelectric stack controls the volume or frequency that microlayer model is formed.Compared to the microlayer model system of micro-fluidic chip
Standby, the microlayer model preparation for driving flow focusing using liquid has many advantages, such as low cost, high encapsulation rate, high yield etc..Two dimension is flat
The microlayer model that the microfluidic chip technology in face is generated often is contacted and deformed with cavity wall, and three-dimensional based on the flow focusing that liquid drives
For the microlayer model that device is generated in liquid environment, the influence of the disturbance to outside is also small, and infiltration sex chromosome mosaicism also obtains further
Improve.But flow is typically changed to change the size of generation microlayer model and generation frequency to the flow focusing driven based on liquid at present
Rate, but the limited extent changed, the too big and too small taper for being all not easy stroke stabilization of flow, and the microlayer model size generated
The uniformity is poor, is often accompanied by the appearance of satellite droplet, therefore, how to provide size and generation frequency needed for a kind of active control preparation
The device of microlayer model be to need to solve the problems, such as.
Utility model content
Based on the problems of prior art, the purpose of this utility model is to provide a kind of based on piezoelectricity singing piece disturbance
Microlayer model active preparation facilities, can active control prepare needed for size and generation frequency microlayer model.
The purpose of this utility model is achieved through the following technical solutions：
The utility model embodiment provides a kind of microlayer model active preparation facilities based on piezoelectricity singing piece disturbance, including：
Piezoelectricity singing piece, resonator
The resonator is provided with opening, and the opening is connected through the through hole in syringe needle side wall with the syringe needle, the resonator
Cavity be in outside the syringe needle side wall, the piezoelectricity singing piece is set on the resonator, and the piezoelectricity singing piece can vibrate
The air flow in the resonator or air vibration are driven to disturb the liquid flowed in syringe needle.
It can be seen from above-mentioned technical scheme provided by the utility model the utility model embodiment provide based on piezoelectricity
The microlayer model active preparation facilities of piezo disturbance, its advantage are：
By setting resonator in the side wall of syringe needle, and piezoelectricity singing piece is set on resonator, can drive and flow in liquid
In focusing arrangement, the energy of piezoelectricity singing piece vibration is introduced before jet column formation, carries out disturbing controllable formation microlayer model.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
The accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present utility model
Example, on the premise of not paying creative work, can also be according to these accompanying drawings for one of ordinary skill in the art
Obtain other accompanying drawings.
Fig. 1 is the microlayer model active preparation facilities structure based on piezoelectricity singing piece disturbance that the utility model embodiment provides
Schematic diagram；
Fig. 2 is the flow focusing apparatus structural representation based on piezoelectricity singing piece disturbance that the utility model embodiment provides
Figure.
In figure：1- syringe needles, 2- through holes, 3- resonators, 4- piezoelectricity singing pieces, 41- piezoelectric ceramics, 42- metal substrates, 5- pipes
Road, 6- microlayer model phases, 7- tapers, 8- jet columns, 9- outlets, 10- containers, 11- circular holes, 12- driving liquid entrances.
Embodiment
With reference to particular content of the present utility model, the technical scheme in the embodiment of the utility model is carried out it is clear,
It is fully described by, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole implementation
Example.Based on embodiment of the present utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the scope of protection of the utility model.
Actively prepared as shown in figure 1, the utility model embodiment provides a kind of microlayer model based on piezoelectricity singing piece disturbance
Device, microlayer model can be actively prepared, including：
Piezoelectricity singing piece, resonator
The resonator is provided with opening, and the opening is connected through the through hole in syringe needle side wall with the syringe needle, the resonator
Cavity be in outside the syringe needle side wall, the piezoelectricity singing piece is set on the resonator, and the piezoelectricity singing piece can vibrate
The air flow in the resonator or air vibration are driven to disturb the liquid flowed in syringe needle.
In above-mentioned preparation facilities, piezoelectricity singing piece is made up of piezoelectric ceramics and metal substrate, the metal substrate with it is described
Resonator is bonded.
Specifically, above-mentioned preparation facilities is as shown in Figure 1, 2, mainly it is connected by piezoelectricity singing piece by resonator with syringe needle,
Piezoelectricity singing piece is made up of piezoelectric ceramics and metal substrate, and the metal substrate is Nian Jie with resonator, resonator again with syringe needle side
Through hole bonding on wall；The piezoelectricity singing piece of vibration drives flowing or air vibration in resonator, and then disturbance insertion is flowed
In the dynamic pipeline focused on；Flow focusing system is driven for liquid, driving liquid flows through circular hole from driving liquid entrance, to what is be passed through by pipeline
Microlayer model mutually provides shearing force and forms stable taper, microlayer model phase and then forms jet column, the liquid of receptacle through circular hole
Body is flowed out by exporting.
The utility model embodiment also provides a kind of microlayer model active preparation method based on piezoelectricity singing piece disturbance, uses
The above-mentioned microlayer model active preparation facilities based on piezoelectricity singing piece disturbance, comprises the following steps：
By driving voltage, driving frequency or the driving ripple of the piezoelectricity singing piece for controlling the microlayer model active preparation facilities
Shape come control jet column it is broken caused by microlayer model size and generation frequency.
The utility model drives the energy of flow focusing introducing piezoelectricity singing piece vibration before jet column formation based on liquid, leads to
Cross uniform-dimension needed for active control preparation, generate the microlayer model of frequency.The device is penetrated when being not added with the disturbance of piezoelectricity singing piece
Fluidization tower extends due to surface tension and then crushed under liquid environment, and the size of break up drops can only control according to flow, response
Time is longer, usually several seconds, and the droplet size generated is uneven, is often accompanied by the appearance of satellite droplet；When pressurization electricity
During the disturbance of piezo, vibrational energy is transferred to the fluid in pipeline by resonator, and vibrational energy is forming taper and jet
Realize the effect of disturbance during post, the utility model is by controlling driving voltage, driving frequency or the drive of piezoelectricity singing piece
Dynamic waveform come control jet column it is broken caused by microlayer model size, generation frequency.
The utility model embodiment is specifically described in further detail below.
As shown in figure 1, the present embodiment provides a kind of microlayer model active preparation facilities based on piezoelectricity singing piece disturbance, the dress
Put and be mainly connected by piezoelectricity singing piece 4 by resonator 3 with syringe needle 1, piezoelectricity singing piece 4 is by piezoelectric ceramics 41 and metal substrate 42
Form, the metal substrate 42 is be bonded with resonator 3, and resonator 3 is be bonded with the through hole 2 on syringe needle 1 again, so solves piezoelectricity
The Insulation Problems of piezo；The piezoelectricity singing piece 4 of vibration drives flowing or air vibration in resonator 3, and then will disturb embedding
In the pipeline 5 for entering flow focusing.
As shown in Fig. 2 driving flow focusing system for liquid, driving liquid flows through circular hole 11 from driving liquid entrance 12, to by pipe
Microlayer model phase 6 that road 5 is passed through provides shearing force and forms stable taper 7, microlayer model phase 6 and then forms jet column through circular hole 11
8, the liquid of the inside of container 10 passes through the outflow of outlet 9.
When being not added with the disturbance of piezoelectricity singing piece 4, jet column 8 extends due to surface tension and then broken under liquid environment
Broken, the size of break up drops can only control according to flow, and the response time is longer, usually several seconds, and the droplet chi generated
It is very little uneven, it is often accompanied by the appearance of satellite droplet；When adding the disturbance of piezoelectricity singing piece 4, vibrational energy is transmitted by resonator 3
Fluid into pipeline 5, vibrational energy realize the effect of disturbance, the utility model during taper 7 and jet column 8 is formed
The broken caused microlayer model of jet column 8 is controlled by controlling driving voltage, driving frequency or the drive waveforms of piezoelectricity singing piece 4
Size and generation frequency, the driving voltage are less than the breakdown voltage of piezoelectricity singing piece 4, and the drive waveforms are sine wave, side
Any of ripple or sawtooth waveforms.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by the protection domain of claims.
Claims (2)
- A kind of 1. microlayer model active preparation facilities based on piezoelectricity singing piece disturbance, it is characterised in that including：Piezoelectricity singing piece, resonatorThe resonator is provided with opening, and the opening is connected through the through hole in syringe needle side wall with the syringe needle, the chamber of the resonator Body is in outside the syringe needle side wall, the piezoelectricity singing piece is set on the resonator, the piezoelectricity singing piece can vibrate drive Air flow or air vibration in the resonator disturb the liquid flowed in syringe needle.
- 2. the microlayer model active preparation facilities according to claim 1 based on piezoelectricity singing piece disturbance, it is characterised in that institute State piezoelectricity singing piece to be made up of piezoelectric ceramics and metal substrate, the metal substrate is Nian Jie with the resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720578342.0U CN206790371U (en) | 2017-05-23 | 2017-05-23 | Microlayer model active preparation facilities based on piezoelectricity singing piece disturbance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720578342.0U CN206790371U (en) | 2017-05-23 | 2017-05-23 | Microlayer model active preparation facilities based on piezoelectricity singing piece disturbance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790371U true CN206790371U (en) | 2017-12-22 |
Family
ID=60711735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720578342.0U Active CN206790371U (en) | 2017-05-23 | 2017-05-23 | Microlayer model active preparation facilities based on piezoelectricity singing piece disturbance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070293A (en) * | 2017-05-23 | 2017-08-18 | 中国科学技术大学 | The microlayer model active preparation facilities and method disturbed based on piezoelectricity singing piece |
-
2017
- 2017-05-23 CN CN201720578342.0U patent/CN206790371U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070293A (en) * | 2017-05-23 | 2017-08-18 | 中国科学技术大学 | The microlayer model active preparation facilities and method disturbed based on piezoelectricity singing piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107070293A (en) | The microlayer model active preparation facilities and method disturbed based on piezoelectricity singing piece | |
| Chong et al. | Active droplet generation in microfluidics | |
| CN107013440A (en) | The microlayer model active preparation facilities and method of embedded piezoelectric stack disturbance | |
| Shah et al. | Cavitation reaction engineering | |
| CN206935332U (en) | The microlayer model active preparation facilities of flow focusing jet disturbing type is driven based on liquid | |
| Eslamian | Excitation by acoustic vibration as an effective tool for improving the characteristics of the solution-processed coatings and thin films | |
| CN105148819B (en) | A kind of supersonic oscillations method and device for preparing microbubble dispersion system | |
| Lu et al. | Nozzle and needle during high viscosity adhesive jetting based on piezoelectric jet dispensing | |
| CN107100831A (en) | The microlayer model active preparation facilities and method disturbed based on piezoelectric circular | |
| CN106206490B (en) | Passive type MEMS Flow vibrations strengthening and heat transferring device and its heat-transferring method | |
| CN104084247A (en) | Elastic wall surface micro-fluidic chip based on T-shaped micro-channel | |
| CN206790371U (en) | Microlayer model active preparation facilities based on piezoelectricity singing piece disturbance | |
| Khmelev et al. | Study of the process of liquid atomization from the ultrasonic disk radiator | |
| CN104741792A (en) | Device and method for achieving laser high-cavitation-strengthening efficiency | |
| RU2013131027A (en) | METHOD AND DEVICE FOR GENERATING DROPS WITH MODULATED GRANULOMETRIC SPECTRUM | |
| CN101818278A (en) | Device and method for preparing porous foam metal by metal melt inflation process | |
| US11344824B2 (en) | Ultrasonic microbubble generation method, apparatus and system | |
| CN204200532U (en) | A kind of biplane coil drive based on giant magnetostrictive thin film driver declines pump | |
| CN104941541A (en) | System and method for preparing microcapsules | |
| CN108499500A (en) | A method of vibration pipeline control flow focusing type micro-fluidic chip generates microlayer model | |
| CN107029640B (en) | Micro-droplet active preparation device and method based on liquid-driven flow focusing jet disturbance | |
| CN206785601U (en) | The microlayer model active preparation facilities of embedded piezoelectric stack disturbance | |
| CN207212639U (en) | Microlayer model active preparation facilities based on piezoelectric circular disturbance | |
| CN105413546B (en) | Microfluid mixing process and mixing device | |
| Cao et al. | Interelectrode gas–liquid-solid three-phase flow analysis and simulation for drilling holes with high aspect ratio by micro-EDM |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |