CN103981566A - Self-assembling preparation method of elliptical photonic crystal - Google Patents
Self-assembling preparation method of elliptical photonic crystal Download PDFInfo
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- CN103981566A CN103981566A CN201410227016.6A CN201410227016A CN103981566A CN 103981566 A CN103981566 A CN 103981566A CN 201410227016 A CN201410227016 A CN 201410227016A CN 103981566 A CN103981566 A CN 103981566A
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Abstract
The invention discloses a self-assembling preparation method of an elliptical photonic crystal. The preparation method comprises the following steps: vertically dropwise adding an ethanol liquid of magnetic gamma-Fe2O3/SiO2 elliptical colloid particles on the surface of a substrate between two magnets, and ending assembling as an ethanol solvent completely volatilizes, thus realizing self-assembling of the elliptical photonic crystal disclosed by the invention. The self-assembling method disclosed by the method shortens assembling time to 1-2 hours, and a self-assembling process is finished after volatilization of the solvent; meanwhile, to prepare a unit product, the preparation method requires 1/10-1/20 of a sample amount required by a preparation method of the prior art; and at the same time, the preparation method disclosed by the invention is simple in equipment, high in production efficiency and low in production cost.
Description
Technical field
The invention belongs to photonic crystal preparing technical field, specifically relate to a kind of self-assembly preparation method thereof of spheroid shape photonic crystal.
Background technology
Along with scientific and technical development, photonic crystal is because of its light synergy, optical modulation, and the excellent properties such as optical waveguides and light amplification are more and more extensive in the application of optical field.For example, for the detection of Toxic or pollutent, by photon crystal structure, its optical detector signal is amplified, just can detect the determinand that content is lower, thereby improve the applicability that optical signalling detects, and this performance depends primarily on the photon band gap feature of photonic crystal, prepare the photonic crystal with complete photonic band gap and can improve its performance.
The spheroid shape photonic crystal that proposes in theory at present to construct may have complete photonic band gap.The preparation method of this class photonic crystal is little, wherein mechanical stretching method and high energy ion irradiation are colloid and construct district's deformation method, p-poly-phenyl ethene photonic crystal carries out original position mechanical stretching or by high-octane ionic fluid, silicon-dioxide photonic crystal is carried out to irradiation, the final spheroid shape photonic crystal that forms, but these two kinds of photonic crystals that method is prepared, in preparation process, easily cause the inconsistent distortion of film and destroy it periodically, so its order degree declines.
The Song Kai research group employing blown film extrusion processes of chemistry institute of the Chinese Academy of Sciences is prepared the more uniform spheroid shape colloidal crystal of structure.They first adopt Monodisperse Polystyrene Microspheres to construct and form the colloidal crystal of three-dimensional order, are then positioned over the unlimited one side of Büchner funnel, and to the polyvinyl alcohol that adds a certain amount of concentration in funnel, at room temperature solidify and form PS/PVA composite membrane.Funnel lower end is connected with booster water pump, film is immersed in completely in the silicone oil bath of 120 DEG C, on initial planar film, blowing out a bubble with pump, air in this bubble causes an even two-dimentional tension control deformation of ball, just form spheroid shape photonic crystal, the method has been utilized the yielding feature of PS microballoon, but the influence factor of the method is many, and operation is difficult to control.
Subsequently, Song Kai research group has prepared the good magnetic γ-Fe of monodispersity
2o
3/ SiO
2spheroid shape colloidal solid, utilizes the axial orientation of externally-applied magnetic field control spheroid shape particle, obtain ellipsoid primitive three-D photon crystal, and order is higher by the assembling of vertical deposition self-assembly method.The method has broken through the deficiency of ellipsoidal particle random orientation in assembling process, control and solved by magnetic field, but the cycle of vertical deposition self-assembling method is longer, generally need 3 ~ 4 days time of one week even, and the needed magnetic γ-Fe of preparation units of product
2o
3/ SiO
2the amount of spheroid shape colloidal solid is larger, and this has caused greatly having increased preparation cost.So the present invention proposes a kind of new assemble method and enhances productivity, and reduces costs.
The present invention still uses the good magnetic γ-Fe of monodispersity
2o
3/ SiO
2spheroid shape colloidal solid is for constructing primitive, adopt induced by magnetic field liquid-vapo(u)r interface construction from part to prepare spheroid shape photonic crystal, self-assembling method built-up time of the present invention is as short as 1 ~ 2 hour, solvent evaporates finishes to complete self assembling process, prepare units of product is 1/10-1/20 with respect to the needed sample size of preparation method of the prior art simultaneously, equipment of the present invention is simple simultaneously, greatly enhances productivity and has reduced production cost.
Summary of the invention
The technical problem to be solved in the present invention is: in the preparation method of spheroid shape photonic crystal of the prior art, exist assembling cycle long, sample consumption is large, the defect that cost is high; The present invention, in order to solve the problems of the technologies described above, provides a kind of self-assembly preparation method thereof of spheroid shape photonic crystal.
A self-assembly preparation method thereof for spheroid shape photonic crystal, specifically completes according to the following steps:
(1) substrate is carried out to ultrasonic cleaning 15-20min with acetone, methyl alcohol and ultrapure water respectively, and then use V
the vitriol oil: V
hydrogen peroxidethe Piranha washing lotion of=2:1 is soaked 20-30min, finally puts into 40 DEG C of baking ovens and dries;
(2) two blocks of magnet are vertically fixed on to one and do not have in magnetic platform, then substrate is placed on to the middle of two blocks of magnet and ensures that substrate is vertical with magnet;
(3) prepare magnetic γ-Fe
2o
3/ SiO
2spheroid shape colloidal solid, described colloidal solid width is 200-500nm, and long-width ratio is 1-1.8, and Biao is accurate, and Pian is Cha≤and 10%;
(4) by the magnetic γ-Fe preparing
2o
3/ SiO
2spheroid shape colloidal solid is scattered in alcohol solvent, is mixed with colloidal solid solution, and its concentration is 0.04-0.08g/ml;
(5) get 50-100 μ L colloidal solid solution, vertical dropping on the surface that is placed in the middle substrate of two blocks of magnet, treats that alcohol solvent all volatilizees, and assembling finishes.
Preferably, described substrate is glass substrate, is of a size of 35 mm × 10 mm × 1mm.
Preferably, described magnet is ndfeb magnet, is of a size of 50 mm × 50 mm × 10mm.
The present invention uses the good magnetic γ-Fe of monodispersity
2o
3/ SiO
2spheroid shape colloidal solid, for constructing primitive, adopts induced by magnetic field liquid-vapo(u)r interface construction from part to prepare spheroid shape photonic crystal innovatively.Self-assembling method built-up time of the present invention is as short as 1 ~ 2 hour, solvent evaporates finishes to complete self assembling process, prepare units of product is 1/10-1/20 with respect to the needed sample size of preparation method of the prior art simultaneously, equipment of the present invention is simple simultaneously, greatly enhances productivity and has reduced production cost.
Brief description of the drawings
Fig. 1 is the scanning electron microscope of the spheroid shape photonic crystal for preparing in the present invention, amplifies 2w doubly;
Fig. 2 is the scanning electron microscope of the spheroid shape photonic crystal for preparing in the present invention, amplifies 5w doubly;
Fig. 3 is the scanning electron microscope of the spheroid shape photonic crystal for preparing in the present invention, amplifies 10w doubly.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further details.
Referring to Figure of description 1-3, by can clearly be seen that on figure, adopt spheroid shape photon crystal structure prepared by self-assembling method of the present invention to be evenly distributed, three-dimensional order is very high.
embodiment mono-:
A self-assembly preparation method thereof for spheroid shape photonic crystal, specifically completes according to the following steps:
(1) glass substrate that is of a size of 35 mm × 10 mm × 1mm is carried out to ultrasonic cleaning 15-20min with acetone, methyl alcohol and ultrapure water respectively, and then use V
the vitriol oil: V
hydrogen peroxidethe Piranha washing lotion of=2:1 is soaked 20min, finally puts into 40 DEG C of baking ovens and dries;
(2) will be of a size of two ndfeb magnets of 50 mm × 50 mm × 10mm and be vertically fixed on one and do not have in magnetic platform, then substrate is placed on two blocks of magnet in the middle of ensure that substrate is vertical with magnet;
(3) prepare magnetic γ-Fe
2o
3/ SiO
2spheroid shape colloidal solid, described colloidal solid width is 200nm, long-width ratio be the accurate Pian of 1.2, Biao Cha≤10%;
(4) by the magnetic γ-Fe preparing
2o
3/ SiO
2spheroid shape colloidal solid is scattered in alcohol solvent, is mixed with colloidal solid solution, and its concentration is 0.04g/ml;
(5) get 50 μ L colloidal solid solution, vertical dropping on the surface that is placed in the middle substrate of two blocks of magnet, treats that alcohol solvent all volatilizees, and assembling finishes.
embodiment bis-:
A self-assembly preparation method thereof for spheroid shape photonic crystal, specifically completes according to the following steps:
(1) glass substrate that is of a size of 35 mm × 10 mm × 1mm is carried out to ultrasonic cleaning 15-20min with acetone, methyl alcohol and ultrapure water respectively, and then use V
the vitriol oil: V
hydrogen peroxidethe Piranha washing lotion of=2:1 is soaked 30min, finally puts into 40 DEG C of baking ovens and dries;
(2) will be of a size of two ndfeb magnets of 50 mm × 50 mm × 10mm and be vertically fixed on one and do not have in magnetic platform, then substrate is placed on two blocks of magnet in the middle of ensure that substrate is vertical with magnet;
(3) prepare magnetic γ-Fe
2o
3/ SiO
2spheroid shape colloidal solid, described colloidal solid width is 500nm, long-width ratio be the accurate Pian of 1.8, Biao Cha≤10%;
(4) by the magnetic γ-Fe preparing
2o
3/ SiO
2spheroid shape colloidal solid is scattered in alcohol solvent, is mixed with colloidal solid solution, and its concentration is 0.08g/ml;
(5) get 100 μ L colloidal solid solution, vertical dropping on the surface that is placed in the middle substrate of two blocks of magnet, treats that alcohol solvent all volatilizees, and assembling finishes.
Claims (3)
1. a self-assembly preparation method thereof for spheroid shape photonic crystal, comprises the following steps:
(1) substrate is carried out to ultrasonic cleaning 15-20min with acetone, methyl alcohol and ultrapure water respectively, and then use V
the vitriol oil: V
hydrogen peroxidethe Piranha washing lotion of=2:1 is soaked 20-30min, finally puts into 40 DEG C of baking ovens and dries;
(2) two blocks of magnet are vertically fixed on to one and do not have in magnetic platform, then substrate is placed on to the middle of two blocks of magnet and ensures that substrate is vertical with magnet;
(3) prepare magnetic γ-Fe
2o
3/ SiO
2spheroid shape colloidal solid, described colloidal solid width is 200-500nm, and long-width ratio is 1-1.8, and Biao is accurate, and Pian is Cha≤and 10%;
(4) by the magnetic γ-Fe preparing
2o
3/ SiO
2spheroid shape colloidal solid is scattered in alcohol solvent, is mixed with colloidal solid solution, and its concentration is 0.04-0.08g/ml;
(5) get 50-100 μ L colloidal solid solution, vertical dropping on the surface that is placed in the middle substrate of two blocks of magnet, treats that alcohol solvent all volatilizees, and assembling finishes.
2. the self-assembly preparation method thereof of spheroid shape photonic crystal according to claim 1, is characterized in that: described substrate is glass substrate, is of a size of 35 mm × 10 mm × 1mm.
3. the self-assembly preparation method thereof of spheroid shape photonic crystal according to claim 1, is characterized in that: described magnet is ndfeb magnet, is of a size of 50 mm × 50 mm × 10mm.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040262790A1 (en) * | 2000-06-15 | 2004-12-30 | Guoyi Fu | Method for producing sphere-based crystals |
| CN102528027A (en) * | 2012-02-24 | 2012-07-04 | 哈尔滨工业大学 | Preparation method for gold-shell magnetic ellipsoid |
| CN102628188A (en) * | 2012-04-18 | 2012-08-08 | 上海应用技术学院 | Assembling method for magnetic field oriented morphological anisotropic axiolitic mesocellular silica photonic crystal ordered film |
| CN102965728A (en) * | 2012-12-10 | 2013-03-13 | 常州大学 | Method for preparing single-layer two-dimensional photonic crystals by using cant-assisted gravity settling method |
| CN103406078A (en) * | 2013-08-12 | 2013-11-27 | 上海应用技术学院 | Preparation method of magnetic iron sesquioxide particle coated with silicon dioxide and provided with oval-shaped nuclear shell type structure |
-
2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040262790A1 (en) * | 2000-06-15 | 2004-12-30 | Guoyi Fu | Method for producing sphere-based crystals |
| CN102528027A (en) * | 2012-02-24 | 2012-07-04 | 哈尔滨工业大学 | Preparation method for gold-shell magnetic ellipsoid |
| CN102628188A (en) * | 2012-04-18 | 2012-08-08 | 上海应用技术学院 | Assembling method for magnetic field oriented morphological anisotropic axiolitic mesocellular silica photonic crystal ordered film |
| CN102965728A (en) * | 2012-12-10 | 2013-03-13 | 常州大学 | Method for preparing single-layer two-dimensional photonic crystals by using cant-assisted gravity settling method |
| CN103406078A (en) * | 2013-08-12 | 2013-11-27 | 上海应用技术学院 | Preparation method of magnetic iron sesquioxide particle coated with silicon dioxide and provided with oval-shaped nuclear shell type structure |
Non-Patent Citations (3)
| Title |
|---|
| TAO DING ET AL.: "Fabrication of 3D Photonic Crystals of Ellipsoids:Convective Self-Assembly in Magnetic Field", 《ADVANCED MATERIALS》 * |
| XIN ZHANG ET AL.: "Preparation and magnetic properties of c-Fe2O3@SiO2 core shell ellipsoids with different aspect ratios", 《NEW JOURNAL OF CHEMISTRY》 * |
| XIN ZHANG ET AL.: "Preparation and magnetic properties of c-Fe2O3@SiO2 core shell ellipsoids with different aspect ratios", 《NEW JOURNAL OF CHEMISTRY》, vol. 38, 16 May 2014 (2014-05-16), pages 4351 - 4356 * |
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