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Method for self-assembling photonic crystal

A photonic crystal and self-assembly technology, applied in crystal growth, chemical instruments and methods, colloidal chemistry, etc., can solve the problems of inability to prepare large-area photonic crystals, photonic crystals cannot be bent, etc., to improve utilization, reduce usage, The effect of increasing the deposition area

Active Publication Date: 2009-01-07
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing method cannot prepare large-area photonic crystals, and the prepared photonic crystals cannot be bent, and provides a method for self-assembling photonic crystals

Method used

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  • Method for self-assembling photonic crystal

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specific Embodiment approach 1

[0013] Embodiment 1: The method for self-assembling photonic crystals in this embodiment is as follows: 1. Surface treatment of the substrate: ultrasonically clean the substrate with deionized water for 10min-30min with acetone for 10min-30min, and then blow it to the surface with nitrogen Dry or bake in a drying oven at 20°C-60°C until dry, then treat with oxygen plasma for 1min-10min; 2. Colloid solution configuration: polystyrene and polymethyl methacrylate with a spherical diameter of 50nm-5μm , silicon dioxide or titanium dioxide pellets are added to the solvent to obtain a solution with a monodispersity of less than or equal to 5% and a mass fraction of 0.005%-5%, and then the resulting solution is ultrasonically oscillated for 10min-30min to obtain a colloidal solution; 3. Put the substrate into the container after cleaning with deionized water for 10-30 minutes, ultrasonically cleaning with acetone for 10-30 minutes, rinsing with deionized water and drying, then add the...

specific Embodiment approach 2

[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the substrate in Step 1 is directly put into the colloid solution obtained in Step 2 without any treatment. Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the temperature of the drying oven in Step 1 is 35°C-65°C. . Others are the same as in the first embodiment.

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Abstract

A self-assembling photonic crystal method relates to a preparation method of photonic crystal. The invention solves the problems existing in the current method that the photo crystal with large area can not be prepared and the prepared photonic crystal can not be bent. The method comprises the procedures as follows: (1) the surface of a base plate is treated: (2) colloidal solution is prepared: and (3) the base plate is put into a vessel and the colloidal solution is added into the vessel; the colloidal solution volatilizes under the constant temperature of 20 DEG C to 70 DEG C; the photonic crystal is taken out until no substance volatilizes, and the photonic crystal is made. The self-assembling photonic crystal can make the single or double sides of the photonic crystal deposit on the base plate, thus making the photonic crystal deposit on the base plate to a maximum.

Description

technical field [0001] The invention relates to a preparation method of a photonic crystal. Background technique [0002] Monodisperse colloidal particle self-assembled photonic crystal is a material with a three-dimensional ordered structure on the nanometer scale. Due to the spatial periodic arrangement of the dielectric constant, the photonic crystal can modulate light waves, so it is used in optical mirrors, optical switches and optical communications. has broad applications. Publication No. CN1749445 (titled "Method for Controlling Colloidal Microsphere Self-Assembly and Preparation of Two-dimensional and Three-dimensional Photonic Crystals") and Publication No. CN1936074 (titled "A Method for Growing Three-dimensional Photonic Crystal Films by Decompression Self-Assembly) and device"), in the process of preparing colloidal photonic crystals, since the substrates are mostly optical glass such as glass slides or silicon wafers, the resulting photonic crystals cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B5/00B01J13/00
Inventor 李垚葛邓腾赵九蓬
Owner HARBIN INST OF TECH
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