CN107694475B - Micro-nano substance annular aggregate forming device - Google Patents
Micro-nano substance annular aggregate forming device Download PDFInfo
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- CN107694475B CN107694475B CN201710872243.8A CN201710872243A CN107694475B CN 107694475 B CN107694475 B CN 107694475B CN 201710872243 A CN201710872243 A CN 201710872243A CN 107694475 B CN107694475 B CN 107694475B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
The invention discloses a device for forming an annular aggregate of micro-nano substances, which comprises a Langewen vibrator, a vibration transmission needle, a connecting section, a circular ring and a substrate provided with a suspension of the micro-nano substances, wherein the vibration transmission needle is adhered to the radiation surface of the Langewen vibrator and is connected with the circular ring through the connecting section, the central plane of the circular ring is parallel to the substrate and is integrally inserted into the suspension of the micro-nano substances, the circular ring is excited by the Langewen vibrator, and the micro-nano substances dispersed on the substrate are driven to move and aggregate below the circular ring by utilizing an acoustic flow vortex generated in a fluid by the circular ring which vibrates in a single direction in a plane, so that the annular aggregate of the micro-nano substances is formed on the substrate. The device for forming the annular aggregate of the micro-nano substances has the advantages of simple operation, easy miniaturization, compact structure, good reliability, low energy consumption and the like.
Description
The technical field is as follows:
the invention relates to a device for forming an annular aggregate of a micro-nano substance, belonging to the fields of micro-nano manufacturing and biomedicine.
Background art:
with the rapid development in the fields of biomedicine, micro-nano manufacturing and the like, how to realize the controllable pattern forming of micro-nano substances on a substrate becomes an important new technology with development prospect. The pattern forming technology of the micro-nano substance has wide application prospect in the aspects of micro-nano self-assembly, high-sensitivity biosensing, crystal growth, artificial tissue culture, micro-nano electronic device processing and the like. The existing micro-nano substance pattern forming methods comprise magnetic tweezers, optical tweezers, dielectrophoresis and the like, and the methods usually have relatively strict requirements on working conditions, for example, the methods cannot be directly controlled on a substrate, the controlled micro-nano substances need to be charged, magnetic particles are needed to be used as carriers, the requirements on transparency, refractive index and the like of the controlled micro-nano substances are met, and the methods are easily influenced by Brownian motion, ambient temperature, pH value and the like, and have high energy consumption and the like.
The ultrasonic micro-nano control technology has the advantages of almost no selectivity on material performance of a controlled sample, simple structure, easiness in operation, various control functions and the like, the existing ultrasonic-based micro-nano substance pattern forming technology comprises the steps of forming circular spots, elliptical spots, linear ribbon-shaped aggregates and the like of micro-nano substances by utilizing ultrasonic, and at present, no technology for forming annular aggregates of the micro-nano substances by utilizing ultrasonic is available.
The invention content is as follows:
in view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a device for forming a micro-nano substance cyclic aggregate, so as to solve the problem that the formation of the micro-nano substance cyclic aggregate on a substrate cannot be realized in the prior art.
The technical scheme adopted by the invention is as follows: a device for forming annular aggregates of micro-nano substances comprises a Langevin vibrator, a vibration transmission needle, a connecting section, a ring and a substrate provided with a suspension of the micro-nano substances, wherein the vibration transmission needle is adhered to a radiation surface of the Langevin vibrator and is connected with the ring through the connecting section, the central plane of the ring is parallel to the substrate and is integrally inserted into the suspension of the micro-nano substances, the ring is excited through the Langevin vibrator, and the micro-nano substances dispersed on the substrate are driven to move and aggregate below the ring by utilizing an acoustic flow vortex generated in a fluid by the ring which vibrates in a single-direction plane, so that the annular aggregates of the micro-nano substances are formed on the substrate.
Further, the vibration transmission needle is made of stainless steel.
Further, the connecting section is a welding section or an adhesion section.
Further, the material of the circular ring is aluminum metal or glass fiber flexible material.
Further, the circular ring is of a solid or hollow structure.
Further, the distance between the central plane of the circular ring and the substrate is 0.5mm-1.5 mm.
Furthermore, the micro-nano substance is in a granular, linear, sheet or block structure, and the characteristic dimension is in a micron scale or a nanometer scale.
Further, the Langevin oscillator is fixed on a three-dimensional moving platform, and an array of annular aggregates of micro-nano substances is formed on the substrate.
The invention has the following beneficial effects:
(1) the forming of the annular aggregate of the micro-nano substance is realized by utilizing the acoustic flow vortex, so that the forming method has no requirement on the material property of the micro-nano substance and cannot damage the micro-nano substance;
(2) the Lanjivin vibrator is adopted for vibration excitation and no rotating part is adopted, so that the method has the advantages of simplicity in operation, good reliability and the like;
(3) the device for forming the annular aggregate of the micro-nano substances has the advantages of easy miniaturization, compact structure, low energy consumption and the like.
Description of the drawings:
fig. 1 is a schematic structural diagram of a device for forming the annular aggregate of the micro-nano substances.
Fig. 2 is a schematic structural view of a circular ring portion.
FIG. 3 is a schematic illustration of acoustic flow vortices near a torus section.
Fig. 4 is a schematic diagram of a cyclic aggregate of micro-nano substances.
Wherein:
the acoustic wave vibration device comprises a 1-Lanjivin vibrator, a 2-vibration transmission needle, a 3-connecting section, a 4-circular ring, a 5-suspension of micro-nano substances, a 6-substrate, a 7-circular ring central line, an 8-acoustic flow vortex, a 9-annular aggregate of the micro-nano substances and an orthographic projection of a 10-circular ring central line on the substrate.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the device for forming the annular aggregate of the micro-nano substance comprises a langevin vibrator 1, a vibration transmission needle 2, a connecting section 3, a circular ring 4 and a substrate 6 provided with a suspension 5 of the micro-nano substance, wherein the vibration transmission needle 2 is adhered to the radiation surface of the langevin vibrator 1 and is connected with the circular ring 4 through the connecting section 3, and the central plane of the circular ring 4 is parallel to the substrate 6 and is integrally inserted into the suspension 5 of the micro-nano substance. The ring 4 is excited by the langevin vibrator 1, and the micro-nano substances dispersed on the substrate 6 are driven to move and gather below the ring 4 by using an acoustic flow vortex 8 generated in the fluid by the ring 4 which vibrates in a single direction in a plane, so that an annular gathering body 9 of the micro-nano substances is formed on the substrate 6.
Wherein, the material of the vibration transmission needle 2 is stainless steel or other metals.
Wherein, the connecting section 3 is a welding section or an adhesive section.
Wherein, the material of the circular ring 4 is metal such as aluminum or flexible material such as glass fiber.
Wherein, the ring 4 is a solid or hollow structure.
Wherein, the distance between the central plane of the circular ring 4 and the substrate 6 is 0.5mm-1.5 mm.
Wherein, the micro-nano substance is in a granular, linear, flaky or blocky structure, and the characteristic dimension is in a micron-scale or nanometer-scale.
Wherein the width of the annular aggregate 6 of the micro-nano substances is not uniform.
The Langewen vibrator 1 is fixed on a three-dimensional moving platform, and an array of annular aggregates 9 of micro-nano substances is formed on a substrate 6.
As shown in fig. 1 and 2, an ac voltage of a resonance frequency is applied to the langevin transducer 1, the langevin transducer 1 vibrates the ring 4, the ring 4 vibrates in a plane perpendicular to the direction of the vibration transmission needle 2 at a vibration velocity V (constant value), and the vibration can be decomposed into normal vibration (the vibration velocity Vsin θ) and tangential vibration (the vibration velocity Vcos θ) for the ring at the angle θ, wherein the normal vibration can generate a desired acoustic streaming vortex.
As shown in fig. 2 and 3, fig. 3 is a schematic diagram of acoustic flow vortices around a circular ring section (formed by connecting the circle center) at an angle θ, the normal vibration of the ring body generates acoustic flow vortices 8 flowing from far to the needle body both above and below the needle body center plane of the vibration transmission needle 2, wherein the acoustic flow vortices on the substrate flow from the outside to directly below the needle body, and the flow velocity U of the acoustic flow vortices is proportional to the square of the normal vibration velocity Vsin θ of the ring body.
As shown in fig. 2, 3 and 4, at the position of the angle θ, the micro-nano substances on the substrate 6 are gathered below the corresponding ring position under the dragging action of the acoustic flow vortex, the width d (formed by connecting the line of the circle centers) of the gathered substances is proportional to the gathering amount of the micro-nano substances in unit time, and the gathering amount of the micro-nano substances in unit time is proportional to the flow speed U of the acoustic flow vortex and is also proportional to the square of the normal vibration speed Vsin θ of the ring, so that for a quarter of the ring, the width of the gathered substances is 0 at the position where θ is 0, and the width of the gathered substances is the maximum at the position where θ is pi/2. The whole circle is symmetrical about the vibration transmission needle and the direction perpendicular to the vibration transmission needle, so that the aggregation of the micro-nano substances is also symmetrical about the vibration transmission needle and the direction perpendicular to the vibration transmission needle, thereby forming a closed annular aggregation 9 of the micro-nano substances.
The device for forming a cyclic aggregate of micro-nano substances according to the present invention will be described below with reference to an example, and the langevin resonator 1 is provided by soyokogaku corporation, soyowa, and has a model number of HNC-2565-59, an external size of 24mm by 30mm (diameter by height), and a resonance frequency of 65.3 kHz. The cylindrical vibration transmission pin 2 is bonded to the radiation surface of the langevin oscillator 1, and is made of stainless steel, 0.4mm in diameter and 5cm in length (excluding the portion bonded to the langevin oscillator 1). The connecting section 3 is a welding section, is 1mm long, and connects the vibration transmission needle 2 with the circular ring 4. The solid circular ring 4 is made of aluminum, the inner diameter is 5mm, the outer diameter is 5.4mm, the central plane of the circular ring 4 is parallel to the horizontally placed smooth silicon substrate 6, the distance between the circular ring and the substrate 6 is 0.6mm, and the whole circular ring is inserted into an aqueous suspension of silver nano particles (the diameter is 400nm) with the concentration of 0.079 mg/ml. The silver nanoparticles partially settle on the surface of the substrate 6.
When the amplitude is 80Vp-pWhen an ac voltage having a frequency of 65.3kHz was applied to the langevin transducer 1, a ring-shaped aggregate of silver nanoparticles having a minimum width of 0 and a maximum width of 280 μm was formed on the surface of the substrate 5 below the ring 4 by ultrasonic treatment for a period of 5 min.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (6)
1. A device for forming a micro-nano substance annular aggregate is characterized in that: the device comprises a Langewen vibrator (1), a vibration transmission needle (2), a connecting section (3), a circular ring (4) and a substrate (6) provided with a micro-nano substance suspension (5), wherein the vibration transmission needle (2) is adhered to the radiation surface of the Langewen vibrator (1), is connected with the circular ring (4) through the connecting section (3), the central plane of the circular ring (4) is parallel to the substrate (6), and is integrally inserted into the micro-nano substance suspension (5), the circular ring (4) is excited and vibrated through the Langewen vibrator (1), and the micro-nano substance dispersed on the substrate (6) is driven to move and gather below the circular ring (4) by utilizing an acoustic flow vortex (8) generated in a fluid by the circular ring (4) which vibrates in a single direction in the plane, so that an annular gathering body (9) of the micro-nano substance is formed on the substrate (6);
the connecting section (3) is a welding section or a bonding section;
the distance between the central plane of the circular ring (4) and the substrate (6) is 0.5mm-1.5 mm.
2. The device for forming the cyclic aggregate of micro-nano substances according to claim 1, wherein: the vibration transmission needle (2) is made of stainless steel.
3. The device for forming the cyclic aggregate of micro-nano substances according to claim 1, wherein: the material of the circular ring (4) is aluminum metal or glass fiber flexible material.
4. The device for forming the cyclic aggregate of micro-nano substances according to claim 1, wherein: the circular ring (4) is of a solid or hollow structure.
5. The device for forming the cyclic aggregate of micro-nano substances according to claim 1, wherein: the micro-nano substance is in a granular, linear, flaky or blocky structure, and the characteristic dimension is in a micron-scale or nanometer-scale.
6. The device for forming the cyclic aggregate of micro-nano substances according to claim 1, wherein: the Langerwen vibrator (1) is fixed on a three-dimensional moving platform, and an array of annular aggregates (9) of micro-nano substances is formed on a substrate (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710872243.8A CN107694475B (en) | 2017-09-25 | 2017-09-25 | Micro-nano substance annular aggregate forming device |
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| CN201710872243.8A CN107694475B (en) | 2017-09-25 | 2017-09-25 | Micro-nano substance annular aggregate forming device |
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| CN107694475A CN107694475A (en) | 2018-02-16 |
| CN107694475B true CN107694475B (en) | 2021-02-19 |
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| CN114367319B (en) * | 2021-12-30 | 2023-10-10 | 江苏大学 | Particle control device and method based on low-frequency vibration probe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108384A (en) * | 2007-08-16 | 2008-01-23 | 刘利华 | Digital type ultrasound wave descaling equipment |
| CN105452873A (en) * | 2013-03-15 | 2016-03-30 | 加利福尼亚大学董事会 | High-speed on demand microfluidic droplet generation and manipulation |
| CN205462171U (en) * | 2016-01-27 | 2016-08-17 | 吉林大学 | Piezoelectricity drive microfluid reaction chip based on focus surface acoustic wave |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE0200860D0 (en) * | 2002-03-20 | 2002-03-20 | Monica Almqvist | Microfluidic cell and method for sample handling |
| CN102698678B (en) * | 2012-06-18 | 2014-05-07 | 南京航空航天大学 | Nanometer material spot forming device |
| CN103030108A (en) * | 2012-12-19 | 2013-04-10 | 南京航空航天大学 | Ultrasonic control method of single nanowire or nanotube, and device thereof |
| KR102218873B1 (en) * | 2013-02-02 | 2021-02-23 | 나우라 아크리온 인코포레이티드 | System for processing substrates using acoustic energy |
| CN207446165U (en) * | 2017-09-25 | 2018-06-05 | 南京航空航天大学 | A kind of annular aggregation building mortion of micro-nano substance |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108384A (en) * | 2007-08-16 | 2008-01-23 | 刘利华 | Digital type ultrasound wave descaling equipment |
| CN105452873A (en) * | 2013-03-15 | 2016-03-30 | 加利福尼亚大学董事会 | High-speed on demand microfluidic droplet generation and manipulation |
| CN205462171U (en) * | 2016-01-27 | 2016-08-17 | 吉林大学 | Piezoelectricity drive microfluid reaction chip based on focus surface acoustic wave |
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