Photonic crystal preparation method and photonic crystal prepared by method

A photonic crystal and liquid technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of low preparation efficiency, limited structure, and many defects in photonic crystals, and achieve the effects of high preparation efficiency, low cost, and wide source of raw materials.

Active Publication Date: 2017-06-30
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with practical applications, the preparation efficiency of the bottom-up method is still low, and the formed photonic crystals generally have more defects, and the st

Method used

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  • Photonic crystal preparation method and photonic crystal prepared by method
  • Photonic crystal preparation method and photonic crystal prepared by method
  • Photonic crystal preparation method and photonic crystal prepared by method

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preparation example Construction

[0035] The invention provides a kind of preparation method of photonic crystal, this method comprises the following steps:

[0036] (1) providing an emulsion containing at least one monodisperse particle, at least one surfactant and at least one solvent;

[0037] (2) Apply the emulsion to the surface of the substrate that needs to form photonic crystals to form a liquid pattern on the surface, and the contact angle of the emulsion to the surface of the substrate that needs to form photonic crystals is 30° to 120°, preferably 40° to 60°, more preferably 40° to 50°; and

[0038] (3) drying the substrate with the liquid pattern to remove the solvent in the liquid pattern to obtain a photonic crystal.

[0039] In the present invention, "at least one kind" means one kind or two or more kinds.

[0040] The monodisperse particles have a light refractive index different from that of air, and may be monodisperse particles commonly used in the field of photonic crystal preparation, wh...

Embodiment 1

[0113] Monodisperse polystyrene particles of different particle sizes (as shown in Table 1) (synthesized with reference to the method of CN100381872C embodiment 1, wherein, adopt styrene as monomer) and sodium lauryl sulfate and water (water in The dynamic viscosity at 70°C is 0.8×10 -3 Pa·s, the same below) is mixed and emulsified by ultrasonic method to obtain an emulsion. In each emulsion, relative to 100 parts by weight of water, the content of monodisperse polystyrene particles is 2 parts by weight, relative to 100 parts by weight Monodisperse polystyrene particles, the content of sodium lauryl sulfate is 2×10 -5 parts by weight. Use a pipette gun to drop the emulsion on the surface of the glass sheet (the contact angle of the emulsion on the glass sheet surface is 45°) to form a 4×7 emulsion drop lattice (the drop volume of each point is 5 μL, and one emulsion forms a lattice In one column, the particle diameter of the monodisperse polystyrene particles in the emulsion...

Embodiment 2

[0121] Monodispersed polystyrene particles with a particle diameter of about 220nm (synthesized with reference to the method of CN100381872C embodiment 1, wherein styrene is used as a monomer), sodium lauryl sulfate and water are mixed and emulsified by ultrasonic methods, thereby Obtain the emulsion, wherein, relative to 100 parts by weight of water, the content of monodisperse polystyrene particles is 2 parts by weight, relative to 100 parts by weight of monodisperse polystyrene particles, the content of sodium lauryl sulfate is 1 * 10 -5 parts by weight.

[0122] The following methods are used to carry out hydrophilic and hydrophobic patterning treatment on part of the surface of the silicon wafer:

[0123] Vacuum vapor deposition of 1H,1H,2H,2H-perfluorodecyltrimethoxysilane on the surface of a silicon wafer forms a monomolecular hydrophobic layer, and then irradiates with a 200W UV mask for 8 hours to form a hydrophilic pattern. On the silicon wafer surface treated with ...

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Abstract

The invention discloses a photonic crystal preparation method. The photonic crystal preparation method comprises providing emulsion containing mono-dispersed particles, a surfactant and a solvent; applying the emulsion to a surface, of a substrate, where the photonic crystal needs to be formed to form a liquid pattern with the contact angle between the surface, of the substrate, where the photonic crystal needs to be formed ranging from 30 degrees to 120 degrees; and drying the substrate with the liquid pattern to obtain the photonic crystal. By means of the drying temperature and the drying time, Pe satisfies the formula 2<Pe<10 or 0<Pe<0.4, and Pe=(3h<2>[eta]r/t<f><2>kTt)<1/2>. The photonic crystal preparation method is low in cost and high in preparation efficiency, in the reflection spectrum of the prepared photonic crystal pattern membrane, the half-peak width is reduced and can reach to 30-60nm, the obtained photonic crystal pattern membrane is flatter in surface and higher in assembly quality, and is brighter in color accordingly; and a thinner photonic crystal pattern membrane can be obtained at the same time. The photonic crystal preparation method is high in applicability, and is suitable for a plurality of substrates and a plurality of preparation techniques.

Description

technical field [0001] The invention relates to the technical field of photonic crystal preparation. Background technique [0002] Photonic crystals are a type of artificially designed and manufactured crystals with periodic dielectric structures on the optical scale. Development trends of optoelectronic devices and photonic integrated circuits. Because photonic crystals have a control effect on photons similar to that of semiconductors on electrons, they are also called "optical semiconductors". Fields such as batteries, chemical and biological sensing have broad application prospects. [0003] People have discovered the structure of photonic crystals in a small amount of substances with structural colors that exist in nature. In scientific applications, photonic crystals not only require a periodic dielectric structure with an optical scale to obtain a photonic band gap similar to the electronic band gap, but also require a large enough contrast between the dielectric c...

Claims

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Application Information

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IPC IPC(8): G02B6/122
CPCG02B6/1225G02B2006/1213
Inventor 李亚楠杨强李明珠宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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