Annular photonic crystal, and preparation method and application thereof

A photonic crystal, ring-shaped technology, applied in the directions of crystal growth, chemical instruments and methods, single crystal growth, etc., to achieve the effect of simple operation and low preparation cost

Inactive Publication Date: 2013-10-23
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, few scientists have paid attention to the use of coffee ring phenomenon to form ring patterns

Method used

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  • Annular photonic crystal, and preparation method and application thereof
  • Annular photonic crystal, and preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0044] Example 1.

[0045] The monodisperse poly(styrene-methyl methacrylate-acrylic acid) colloidal microspheres with a particle size of 80nm were ultrasonically dispersed in water to prepare an emulsion with a concentration of 0.01 wt%, and the obtained emulsion was drip-coated on the glass plate The surface (the size of the droplet is 10μm) is dried at a temperature of 5°C and a humidity of 5%. After drying, self-assembly of monodisperse poly(styrene-methyl methacrylate-acrylic acid) colloidal microspheres is obtained It is formed by monodisperse poly(styrene-methyl methacrylate-acrylic acid) colloidal microspheres with a photonic band gap of 200 nm and a ring width of 0.1 μm, and is composed of monodisperse (styrene-methacrylic acid) colloidal microspheres. Methyl-acrylic acid) colloidal microspheres are periodically arranged to form a photonic crystal with a single ring and single band gap cyclic opal structure.

[0046] The photonic band gap prepared above is located at 200n...

Example Embodiment

[0047] Example 2.

[0048] The monodisperse polystyrene colloidal microspheres with a particle size of 1100nm were ultrasonically dispersed in water to prepare an emulsion with a concentration of 30wt%, and the resulting emulsion was sprayed on the surface of the polystyrene (droplet size is 10cm). After drying under the conditions of 95℃ and 95% humidity, the photonic band gap formed by self-assembly of monodisperse polystyrene colloidal microspheres is obtained at 2600nm and the ring width is 0.1cm. The colloidal microspheres are the constituent units, and are a photonic crystal with a ring-shaped opal structure of a single ring and a single band gap formed by periodic arrangement of monodisperse styrene colloidal microspheres.

[0049] The photonic band gap prepared above is located at 2600nm and the ring width is 0.1cm. Monodisperse polystyrene colloidal microspheres are used as the constituent unit, and the monodisperse styrene colloidal microspheres are periodically arranged ...

Example Embodiment

[0050] Example 3.

[0051] The monodisperse polymethyl methacrylate colloidal microspheres with particle diameters of 180nm and 210nm were ultrasonically dispersed in water respectively, and emulsions with a concentration of 20wt% were prepared respectively. The emulsion of methyl acrylate colloidal microspheres is first ink-jet printed on the surface of the mica sheet (droplet size is 100μm), dried at a temperature of 50°C and humidity of 60%, and then prepared after drying. Disperse polymethyl methacrylate colloidal microspheres formed by self-assembly, the photonic band gap is located at 450nm, the ring width is 1μm, and the monodisperse polymethyl methacrylate colloidal microspheres are composed of monodisperse methacrylic acid The methyl ester colloidal microspheres are periodically arranged to form a single ring single band gap cyclic opal structure photonic crystal; then the obtained emulsion containing the monodisperse polymethyl methacrylate colloidal microspheres with a...

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Abstract

The invention relates to an annular photonic crystal, and a preparation method and an application thereof. Emulsion containing mono-dispersed colloidal microspheres of same particle diameters and two emulsions containing mono-dispersed colloidal microspheres of different particle diameters or one of a plurality of emulsions containing mono-dispersed colloidal microspheres of different particle diameters are dispersed, sprayed or printed by jetting ink on the surface of a solid substrate and then dried; then, one or more residual emulsions containing mono-dispersed colloidal microspheres are dispersed, sprayed or printed by jetting ink successively; and then, the single-band-gap, double-band-gap or multi-band-gap annular opal structured photonic crystal, the photonic band gap of which is in the region of ultraviolet light, visible light or infrared light, can be obtained. An annular reverse opal structured photonic crystal can be prepared by taking the prepared annular opal structured photonic crystal as a sacrificial template. The preparation method is simple for operation and low in cost and is applied to preparing annular photonic crystals in a large scale. The prepared annular photonic crystal has important application in the fields, such as spectrometers, photonic crystal filters, reflected light sheets, tunable photonic crystal lasers and the like.

Description

technical field [0001] The invention relates to a ring-shaped photonic crystal, and a method for preparing the ring-shaped photonic crystal by drip coating, spraying, and ink-jet printing, in particular to ring-shaped photonic crystals with single band gap, double band gap and multiple band gaps and a preparation method thereof. The invention also relates to the application of the prepared annular photonic crystal in the fields of spectrometers, adjustable photonic crystal filters or reflectors, adjustable photonic crystal lasers (which need to be equipped with micro-displacement controllers), and the like. Background technique [0002] When coffee or red wine is spilled on the table, people usually find a ring-shaped deposit on the outer edge of the coffee or red wine drop. This phenomenon was later named the coffee ring phenomenon. Professors and collaborators at the University of Chicago found that the ring-shaped deposits are caused by capillary flow caused by the differ...

Claims

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Application Information

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IPC IPC(8): C30B29/66
Inventor 周金明刘美金黄羽王京霞宋延林金智渊
Owner INST OF CHEM CHINESE ACAD OF SCI
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