CN102183818B - Multicore-fiber-based optical motor and micropump - Google Patents
Multicore-fiber-based optical motor and micropump Download PDFInfo
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- CN102183818B CN102183818B CN 201110113766 CN201110113766A CN102183818B CN 102183818 B CN102183818 B CN 102183818B CN 201110113766 CN201110113766 CN 201110113766 CN 201110113766 A CN201110113766 A CN 201110113766A CN 102183818 B CN102183818 B CN 102183818B
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Abstract
The invention provides a multicore-fiber-based optical motor and a micropump. The optical motor comprises multicore fibers with wedge-shaped front end and a micro rotor; the micro rotor comprises two sphere bodies, a rotating shaft and wings, wherein the wings are positioned on the rotating shaft, and the two sphere bodies are arranged at two ends of the rotating shaft to form the micro rotor with a symmetrical structure; and the multicore fiber with the wedge-shaped front end comprises two pairs of shaft fixing fiber cores and driving fiber cores, wherein the shaft fixing fiber cores are symmetrical at two sides and play a shaft fixing role in forming dual optical tweezers for capturing the sphere bodies of the micro rotor, and the driving fiber cores emit outgoing light to drive the wings of the micro rotor; two V-shaped grooves and dual U-shaped runners are machined on a glass substrate; the wedge-shaped multicore fiber is fixed in the V-shaped grooves; the micro rotor is placed at a U-shaped bending part of the dual U-shaped runners; and the micro rotor is driven by the multicore fiber with the wedge-shaped front end to rotate to drive fluid to flow to form the micropump. Compared with the traditional optical drive device, the optical motor has the advantages of small size, light weight, simple structure, low cost, easiness in operation, saved operation space, and the like and can be widely applied to biological and chemical fields.
Description
Technical field
What the present invention relates to is a kind of micro drives device.Specifically a kind of multi-core fiber that is applied in the Micropump drives the device of little rotor.
Background technology
In the last few years, micro-total analysis system (μ TAS) was also referred to as the laboratory that makes up on the single-chip and had started huge research tide at medical research, biologic applications analysis and chemical field.Wherein Micropump is one of vital part that drives the miniflow motion, and therefore design and preparation Micropump also become more and more important.Yet, the Micropump of preparation is owing to adopt the film formed volume (M.A.Unger of distortion before, H.P.Chou, T.Thorsen, A.Scherer and S.R.Quake, " Monolithic Micro-fabricated Valves and Pumps by Multilayer Soft Lithography, " Science 288,113 (2000)), so be difficult to reduce its size.In addition, the Micropump that this mode prepares can produce the pulsation this be very disadvantageous factor to high-precision chemistry and biological processes, these negative effects so that the Micropump under this mode need to further be improved.In order to overcome above deficiency, people begin to adopt the mode of optical drive, it not only can dwindle the size of microfluidic devices, simultaneously can in the environment of sealing, just can control fine particle or biological specimen, adopt in addition the optical drive Micropump can provide extremely low flowing velocity (less than 1pL/min) in the situation of not using detent.The optical drive Micropump mainly is divided into two kinds.A kind of is to utilize laser to form array to drive the rotor rotation that birefringent material is prepared into, fundamental purpose is to utilize the stickiness pulling force to drive liquid (A.Terray, J.Oakey and D.W.M.Marr, " Microfluidic control using colloidal devices; " Science 296,1841 (2002)); Thereby another is mobile (the Shoji Maruo of little rotor drive miniflow of Laser Driven given shape, Akira Takaura, and Yohei Saito.Optically driven micropump with a twinspiral Microrotor.Optics Express 17 (21), pp.18525-18532 (2009)).
1936, R.A.Beth allowed a branch of circularly polarized light by the half-wave plate that filament hangs experimentally, utilized first the angular momentum of photon in the light beam to realize the rotation of object.People are ceaselessly exploring the method that realizes photic rotation always since then.Since the people such as Askin in 1986 at Opt.Lett.11, publishing an article on the 288-290, " Observation of a single-beamgradient force optical trap for dielectric particles has proposed " light tweezer " and has realized the three dimensions of particle is controlled, and has also promoted the development of photic rotation simultaneously.Up to the present realize the following several modes of the main employing of optical drive rotation: first kind of way is to utilize spin angular momentum to realize rotation, such as document (Sugiura T, Kawata S, MinamiS.Optical rotation of small particles by a circularly-polarized laser beam in anoptical microscope.J Spectrosc Soc Jpn 1990 mentions in 39:342) and utilizes the circularly polarized light laser beam to be applied to birefringent material; The second way is to utilize orbital angular momentum to realize rotation, such as document (Sato S, I shigure M, InabaH.Optical trapping and manipulation of microscopic particles and biological cellsusing higher-order mode Nd:YAG laser beams.Electron.Lett., 1991, the higher order mode laser beam irradiation of a kind of non-homogeneous intensity of mentioning in 27:1831-1832); The third mode is to utilize the linear momentum of light to realize rotation, design and produce the microdevice with given configuration structure, utilize device that the interactions such as the reflection of light beam, refraction, absorption are realized that the rotation of device (wishes stable, Liu Yuxiang, Guo Rui, Deng. a kind of Laser Processing of miniature rotor and photic rotation. photoelectric project .2006,33 (1): 10-13).Use the particulate of special shape such as windmill shape, light beam itself does not carry angular momentum, can be that linearly polarized light also can be nonpolarized light, the similar wind windmill of the principle of its photic rotation rotates, thereby the light pressure of light field acts on and can produce moment of torsion on the particulate of windmill shape and make the particulate rotation, and its rotating speed is directly proportional with light intensity.The Ormos group of Hungary academy of sciences has done a large amount of research work in this respect.The advantage of this method is that the rotating speed of particulate and direction can manual controls, and shortcoming is the restriction that is subject to the shape of particulate, but along with the development of two-photon process technology, this method should use more flexible.Also have in addition the multiple cleverly methods such as two Fiber Optic Sensors, double optical trap method, interference zlasing mode method, the ingenious part of these optics spinning solutions generally all is the selection of ligh trap zlasing mode and the design philosophy of light path, is still waiting further Improvement and perfection.But all be to adopt laser to form the light tweezer to drive so far.The laser optical tweezer volume ratio is huger, is difficult for moving, and cost is high.
Summary of the invention
The object of the present invention is to provide that a kind of volume is little, lightweight, simple in structure, low price, easy to operate, the light motor based on multi-core fiber of saving the operating space.The present invention also aims to provide a kind of Micropump that comprises based on the light motor of multi-core fiber.
The object of the present invention is achieved like this:
Light motor based on multi-core fiber of the present invention comprises that front end is multi-core fiber and little rotor of wedge shape; Described little rotor comprises spheroid, turning axle and the wing, little rotor that a plurality of wings are arranged on the turning axle, two sphere installations consist of symmetrical structure at the two ends of turning axle; Described front end is that the multi-core fiber of wedge shape comprises that forming pair light tweezers captures the monosymmetric dead axle fibre core of two couples that the spheroid of little rotor plays the dead axle effect, also comprises and sends the driving fibre core that emergent light drives the wing of little rotor.
The light motor that the present invention is based on multi-core fiber can also comprise:
1, described front end is the multi-core fiber of wedge shape, be the multi-core fiber front end to be excised take chamfering as the α symmetria bilateralis through Precision Machining form the wedge shape multi-core fiber, and the satisfied pi/2-arcsin (n that concerns of angle [alpha]
Liquid/ n
Core)＜α＜pi/2 forms optical trap and captures little rotor spheroid.
2, the multi-core fiber of described wedge shape comprises that 4 dead axle fibre cores and 1 drive fibre core, and it is that 4 dead axles satisfy rectangular distribution that how much of fibre core distribute, and 1 drives fibre core and consists of isosceles triangle with a symmetrical fibre core that drives wherein.
3, the multi-core fiber of described wedge shape comprises that 4 dead axle fibre cores and 2 drive fibre cores, and it is that 4 dead axles satisfy rectangular distribution that how much of fibre core distribute, and 2 drive fibre core and consist of isosceles triangle with a symmetrical fibre core that drives wherein separately.
Of the present inventionly comprise that the Micropump based on the light motor of multi-core fiber comprises substrate of glass, be processed with two V-shaped grooves and dual U-shaped runner in substrate of glass, the multi-core fiber of wedge shape is fixed in the V-shaped groove, little rotor is placed the U-shaped knee of dual U-shaped runner, utilize front end to drive liquid flow and form Micropump for the multi-core fiber of wedge shape drives little rotor.
Of the present inventionly comprise that the Micropump based on the light motor of multi-core fiber can also comprise:
It is to utilize epoxy resin that the multi-core fiber of front end for wedge shape is fixed in the V-shaped groove of microflute that the multi-core fiber of described wedge shape is fixed in the V-shaped groove, and tapered end hands over rib parallel with the turning axle of little rotor.
The Novel Microstructure multi-core fiber that the present invention proposes utilizes front end, and two optical optical tweezers systems are stable captures little two ends of rotor and plays the stator effect for the special construction of wedge shape can form, and remaining optical fiber drives the wing and plays the rotor effect, realizes stable rotation.Relatively traditional drive unit it possess not only that volume is little, lightweight, simple in structure, low price, easy to operate, more easily the retouching operation position, save the operating space and easy fixed fiber in dual U-shaped runner microflute, therefore easily assembling is widely used in the biological and chemical field more.
Advantage of the present invention is mainly reflected in:
1, the invention provides a kind of novel light motor system based on multi-core fiber, utilize front end two optical optical tweezers systems are stable for the special construction of wedge shape can form and capture little two ends of rotor and play the stator effect, remaining optical fiber drives the wing and plays the rotor effect, realizes stable rotation.
2, utilize multi-core fiber to drive the relative conventional laser of little rotor and drive little rotor arrangement, the advantage such as it possesses, and volume is little, simple in structure, quality is light, low price, operation degree of freedom are large, easy to operate.Solve simultaneously multifiber and driven the problem that is difficult for arranging, saved physical space.
3, microflute is designed with two V-shaped grooves, easily fixed fiber, easily assembling.
Description of drawings
Fig. 1 is based on the structural representation of the light motor of multi-core fiber driving;
Fig. 2 front end is the multi-core fiber synoptic diagram of wedge shape;
Fig. 3 front end is the first cross sectional representation of the multi-core fiber of wedge shape;
Fig. 4 front end is the second cross sectional representation of the multi-core fiber of wedge shape;
Fig. 5 front end is the third cross sectional representation of the multi-core fiber of wedge shape;
The little rotor synoptic diagram of Fig. 6;
The vertical view of Fig. 7 Fig. 6;
The front view of Fig. 8 Fig. 6;
The V-shaped groove of processing on Fig. 9 substrate of glass and dual U-shaped runner synoptic diagram;
Figure 10 comprises the Micropump synoptic diagram based on the light motor of multi-core fiber.
Embodiment
For example the present invention is done more detailed description below in conjunction with accompanying drawing:
In conjunction with Fig. 1, the light motor based on multi-core fiber of the present invention comprises that front end is multi-core fiber 1 and little rotor 2 of wedge shape; Simultaneously in conjunction with Fig. 6-8, little rotor comprises spheroid, turning axle and the wing, and 3-8 wing be arranged on the turning axle, two sphere installations are at little rotor of the two ends of turning axle formation symmetrical structure; Described front end is that the multi-core fiber of wedge shape comprises that forming pair light tweezers captures the monosymmetric dead axle fibre core 3 of two couples that the spheroid of little rotor plays the dead axle effect, also comprises and sends the driving fibre core 4 that emergent light drives the wing of little rotor.Described front end is the multi-core fiber of wedge shape, is the multi-core fiber front end to be excised take chamfering as the α symmetria bilateralis through Precision Machining form the wedge shape multi-core fiber, and the satisfied pi/2-arcsin (n that concerns of angle [alpha]
Liquid/ n
Core)＜α＜pi/2 forms optical trap and captures little rotor spheroid.
The multi-core fiber of wedge shape can have various ways.In conjunction with Fig. 2-4, wherein a kind of form is: distribute in covering 64 dead axle fibre cores and 1 drive fibre core, and it is that 4 dead axles satisfy rectangular distribution that how much of fibre core distribute, and 1 drives fibre core and consists of isosceles triangle with a symmetrical fibre core that drives wherein; In conjunction with Fig. 5, another form is: comprise that 4 dead axle fibre cores and 2 drive fibre cores, it is that 4 dead axles satisfy rectangular distribution that how much of fibre core distribute, and 2 drive fibre core and consist of isosceles triangle with a symmetrical fibre core that drives wherein separately.
In conjunction with Fig. 9-10, of the present inventionly comprise that the Micropump based on the light motor of multi-core fiber comprises substrate of glass, be processed with two V-shaped grooves and dual U-shaped runner in substrate of glass, the multi-core fiber of wedge shape is fixed in the V-shaped groove, little rotor is placed the U-shaped knee of dual U-shaped runner, utilize front end to drive liquid flow and form Micropump for the multi-core fiber of wedge shape drives little rotor.
It is to utilize epoxy resin that the multi-core fiber of front end for wedge shape is fixed in the V-shaped groove of microflute that the multi-core fiber of described wedge shape is fixed in the V-shaped groove, and tapered end hands over rib parallel with the turning axle of little rotor.
Manufacturing process of the present invention mainly comprises:
1, front end is that the multi-core fiber of wedge shape is made: get one section fibre core and distribute and be polygonal multi-core fiber 1 front end (angle [alpha] satisfies and concerns pi/2-arcsin (n take chamfering as α through precise finiss processing
Liquid/ n
Core)＜α＜pi/2) the symmetria bilateralis excision forms the wedge shape multi-core fiber;
2, the processing of little rotor: wherein the processing of fine particle as shown in Figure 7, the model of designing institute demand in CAD at first, then the application program that has designed according to CAD, be converted into the instruction that controller can be identified, the software control system of recycling computing machine is controlled the break-make of precise motion and the optical gate of three-dimensional shifting axle, realize the selective processing of femtosecond laser, this moment, the femtosecond laser collimation was rear from microscope left side incident, through after the mirror reflects, focused in the photosensitive resin by 100 x Microscope Objectives, photosensitive resin is positioned at surface of glass slide, slide is fixed on the three-dimensional shifting axle, thereby in photosensitive resin, make the 3 D stereo micro element, unexposed material dissolution with solvents, just obtaining required curing three-dimensional microstructures is designed little rotor.
3, microflute processing: in conjunction with Fig. 9, utilize polishing and burnishing machine to process micro groove structure in substrate of glass.
4, multi-core fiber is fixed: utilize epoxy resin that the multi-core fiber of front end for wedge shape is fixed in the V-shaped groove of microflute, so that tapered end hands over rib parallel with the turning axle of little rotor.
Claims (5)
1. the light motor based on multi-core fiber is characterized in that: comprise that front end is multi-core fiber and little rotor of wedge shape; Described little rotor comprises spheroid, turning axle and the wing, little rotor that a plurality of wings are arranged on the turning axle, two sphere installations consist of symmetrical structure at the two ends of turning axle; Described front end is that the multi-core fiber of wedge shape comprises that forming pair light tweezers captures the monosymmetric dead axle fibre core of two couples that the spheroid of little rotor plays the dead axle effect, also comprises and sends the driving fibre core that emergent light drives the wing of little rotor; Described front end is the multi-core fiber of wedge shape, is the multi-core fiber front end to be excised take chamfering as the α symmetria bilateralis through Precision Machining form the wedge shape multi-core fiber, and the satisfied pi/2-arcsin (n that concerns of angle [alpha]
Liquid/ n
Core)＜α＜pi/2 forms optical trap and captures little rotor spheroid.
2. the light motor based on multi-core fiber according to claim 1, it is characterized in that: the multi-core fiber of described wedge shape comprises 4 dead axle fibre cores and 1 driving fibre core, it is that 4 dead axles satisfy rectangular distribution that how much of fibre core distributes, and 1 drives fibre core and consists of isosceles triangle with a symmetrical fibre core that drives wherein.
3. the light motor based on multi-core fiber according to claim 1, it is characterized in that: the multi-core fiber of described wedge shape comprises 4 dead axle fibre cores and 2 driving fibre cores, it is that 4 dead axles satisfy rectangular distribution that how much of fibre core distributes, and 2 drive fibre core and consist of isosceles triangle with a symmetrical fibre core that drives wherein separately.
4. one kind comprises the Micropump based on the light motor of multi-core fiber, it is characterized in that: comprise substrate of glass, be processed with two V-shaped grooves and round the dual U-shaped runner of two V-shaped grooves in substrate of glass, the multi-core fiber of wedge shape is fixed in the V-shaped groove, little rotor is placed the U-shaped knee of dual U-shaped runner, utilize front end to drive liquid flow and form Micropump for the multi-core fiber of wedge shape drives little rotor; Described front end is the multi-core fiber of wedge shape, is the multi-core fiber front end to be excised take chamfering as the α symmetria bilateralis through Precision Machining form the wedge shape multi-core fiber, and the satisfied pi/2-arcsin (n that concerns of angle [alpha]
Liquid/ n
Core)＜α＜pi/2 forms optical trap and captures little rotor spheroid.
5. the Micropump that comprises based on the light motor of multi-core fiber according to claim 4, it is characterized in that: it is to utilize epoxy resin that the multi-core fiber of front end for wedge shape is fixed in the V-shaped groove of microflute that the multi-core fiber of described wedge shape is fixed in the V-shaped groove, and tapered end hands over rib parallel with the turning axle of little rotor.
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| CN104110355B (en) * | 2014-07-02 | 2016-04-20 | 南京理工大学 | The Micropump device that a kind of photo-induced telescopic material drives |
| CN108267815B (en) * | 2018-02-09 | 2019-12-13 | 哈尔滨工业大学 | micro-nano optical motor based on coupling of waveguide and resonant cavity and driving method thereof |
| CN109061868B (en) * | 2018-07-16 | 2021-01-05 | 哈尔滨工程大学 | Optical motor for driving micro particles to rotate by using standard single-mode optical fiber |
| CN110993141A (en) * | 2019-11-15 | 2020-04-10 | 桂林电子科技大学 | Multi-core optical fiber suspension type optical motor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236275A (en) * | 2008-02-19 | 2008-08-06 | 哈尔滨工程大学 | Optical forceps based on ring -shaped multi- core optical fibre |
| CN100498394C (en) * | 2007-10-26 | 2009-06-10 | 哈尔滨工程大学 | Double core single optical fiber optical tweezers for capturing minute particle and its manufacture method |
| CN100507620C (en) * | 2007-08-08 | 2009-07-01 | 哈尔滨工程大学 | Small core diameter ultra-high numerical aperture cone optical fiber optical tweezers and manufacturing method thereof |
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| ITMI20061351A1 (en) * | 2006-07-12 | 2008-01-13 | Univ Pavia | METHOD AND OPTICAL DEVICE FOR THE BINDING OF A PARTICLE |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100507620C (en) * | 2007-08-08 | 2009-07-01 | 哈尔滨工程大学 | Small core diameter ultra-high numerical aperture cone optical fiber optical tweezers and manufacturing method thereof |
| CN100498394C (en) * | 2007-10-26 | 2009-06-10 | 哈尔滨工程大学 | Double core single optical fiber optical tweezers for capturing minute particle and its manufacture method |
| CN101236275A (en) * | 2008-02-19 | 2008-08-06 | 哈尔滨工程大学 | Optical forceps based on ring -shaped multi- core optical fibre |
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