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Construction technology of homogeneous photonic crystal coating

A photonic crystal and process technology, applied in the directions of printing, copying/marking methods, etc., can solve problems such as application limitations, and achieve the effect of low cost

Inactive Publication Date: 2018-01-05
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process involves the screening or modification of the base, so the application is subject to certain restrictions

Method used

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  • Construction technology of homogeneous photonic crystal coating
  • Construction technology of homogeneous photonic crystal coating
  • Construction technology of homogeneous photonic crystal coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] At 27°C, monodisperse polystyrene colloidal particles with particle diameters of 190 nm, 215 nm, and 272 nm were dispersed in a mixed solution of diethylene glycol and ethanol to prepare a dispersion with a mass fraction of colloidal particles of 15 wt%. Among them, the mass ratio of diethylene glycol and ethanol is 1:5. Place the obtained emulsion in the liquid chamber of the spraying equipment, and spray it on the glass substrate. The spraying time is 30s. After drying, a monodispersed polystyrene particle with monodispersed polystyrene particles as a single-stack structure can be obtained. Photonic crystal thin film material.

[0021] The photonic crystal film obtained by spraying is like figure 1 As shown, the prepared photonic crystal film has a uniform structure and a smooth surface without defects. Moreover, during the spraying process, by adjusting the spraying sequence of colloidal particles of different particle sizes, a photonic crystal film with a full visible...

Embodiment 2

[0023] At 35° C., monodisperse polystyrene colloidal particles with particle diameters of 180 nm, 232 nm, and 256 nm were dispersed in a mixed solution of ethylene glycol and water to prepare a dispersion with a mass fraction of colloidal particles of 20 wt%. Among them, the mass ratio of ethylene glycol and water is 1:9. First select one of the colloidal particle dispersions and place them in the liquid chamber of the spraying equipment, and spray them on the PMMA plastic film base. After drying, proceed to the next colloidal particle dispersion for spraying, where each spraying time is 45s . By controlling the spraying sequence of colloidal particles of different particle sizes, the construction of photonic crystal coatings of various colors can be realized. The coating is a photonic crystal thin film material with non-angle-dependent characteristics formed by monodisperse polystyrene particles of different particle sizes as a single stack.

Embodiment 3

[0025] Under the condition of 25° C., monodisperse polystyrene colloidal particles with a particle size of 272 nm were dispersed in a mixed solution of ethylene glycol and water to prepare a dispersion of colloidal particles with a mass fraction of 40 wt%. Among them, the mass ratio of ethylene glycol and water is 1:20. The dispersion is placed in the liquid chamber of the knife coating equipment, and then a wire rod with an etching depth of 30 μm is used to knife the paper. After the moisture is dried, the photonic crystal coating is constructed. The homogeneous photonic crystal coating is composed of a photonic crystal lattice formed by orderly stacking monodisperse polystyrene particles.

[0026] The squeegee operation process is as figure 2 As shown, it can be seen that this method has the advantages of simple equipment and fast film forming speed.

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Abstract

The invention relates to a construction technology of a homogeneous photonic crystal coating. The construction technology is characterized in that a mixture of monodispersed colloid particles, a low-boiling point solvent and a high-boiling point solvent serves as construction ink, and the homogeneous photonic crystal coating is constructed through spraying, scraping or inkjet printing. The construction technology of the homogeneous photonic crystal coating has the characteristics of being simple and rapid, low in cost and capable of being constructed in a large area. The prepared photonic crystal patterned coating can be applied to photonic crystal light filters, photonic crystal optical fiber, structural color coating and the important fields of sensing, displaying, coding, and the like.

Description

Technical field [0001] The invention designs the construction of a homogeneous photonic crystal coating, relates to a construction process of a homogeneous photonic crystal coating, and particularly relates to the use of colloidal particle ink composition and construction technology to solve the "coffee ring" effect of the colloidal dispersion ink printing process, thereby Obtain high-quality photonic crystal patterns, and realize the application of homogeneous photonic crystal coatings in high-efficiency optical display devices. Background technique [0002] Colloidal photonic crystals are a two-dimensional or three-dimensional ordered periodic structure formed by monodisperse inorganic or organic colloidal particles that self-assemble under specific conditions. Because of its special optical band gap characteristics, it has important application prospects in the fields of display, chemical and biological sensing and coding. How to pattern the photonic crystal is an important p...

Claims

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Application Information

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IPC IPC(8): B41M5/00
Inventor 陈苏张静朱志杰
Owner NANJING UNIV OF TECH
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