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Colloidal-single-crystal-self-assembly computer simulation method based on heat-treatment assistance and preparing method of colloidal single crystals

A simulation method and self-assembly technology, applied in the direction of single crystal growth, self-gel state, chemical instruments and methods, etc., can solve problems such as difficulties, achieve the effect of improving quality and saving financial and material resources

Inactive Publication Date: 2017-03-22
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is well known that predicting experimental parameters (especially when liquid evaporation is considered) by modeling and using computer simulations is a very difficult topic (Woodley et al., Nature Materials 2008, 7, (12))
There are currently no literature or patent reports

Method used

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  • Colloidal-single-crystal-self-assembly computer simulation method based on heat-treatment assistance and preparing method of colloidal single crystals
  • Colloidal-single-crystal-self-assembly computer simulation method based on heat-treatment assistance and preparing method of colloidal single crystals
  • Colloidal-single-crystal-self-assembly computer simulation method based on heat-treatment assistance and preparing method of colloidal single crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1: Effects of different dispersion systems (ethanol, water, mixture of ethanol and ethylene glycol) on the assembly of monolayer colloidal crystals with polystyrene beads with a diameter of 460 nm.

[0060] (1) Clean the substrate according to the standard RCA procedure;

[0061] (2) Hydrophilic treatment of the cleaned substrate, putting it into a mixed solution of hydrogen peroxide and concentrated sulfuric acid;

[0062] (3) The preparation of glue concentration is 3% ethanol, water, the mixture of ethanol and ethylene glycol. Disperse polystyrene beads with a diameter of 460 nm in the three solvents

[0063] (4) Set the parameters of the glue homogenizer as: rotating speed (300 rpm) and glue homogenization time (6 seconds), put the substrate in the glue homogenizer and coat the glue film;

[0064] (5) Constant temperature treatment of the sample: the sample after homogenization is placed in a constant temperature device, and the temperature is controlled a...

Embodiment 2

[0067] Example 2: Polystyrene beads with a diameter of 460 nm were assembled into a single-layer colloidal crystal.

[0068] (1) Clean the substrate according to the standard RCA procedure;

[0069] (2) Hydrophilic treatment of the cleaned substrate, putting it into a mixed solution of hydrogen peroxide and concentrated sulfuric acid;

[0070] (3) Prepare a mixed solution of ethanol and ethylene glycol, which is infiltrated with the substrate and the beads and is not volatile, and infiltrates the polystyrene beads with a diameter of 460nm to obtain a glue solution with a concentration of 10%;

[0071] (4) Monte Carlo simulation is carried out by computer to simulate a suitable self-assembly temperature. When simulating, first input the diameter of the ball R=460nm, U 0 =200, the energy no longer changes criterion δ=30. Then input different assembly temperatures T, and compare the simulation results by observation to find the best assembly temperature. The results show that...

Embodiment 3

[0075] Example 3: Polystyrene beads with a diameter of 460nm, the influence of glue concentration on the assembly of monolayer colloidal crystals.

[0076] (1) Clean the substrate according to the standard RCA procedure;

[0077] (2) Hydrophilic treatment of the cleaned substrate, putting it into a mixed solution of hydrogen peroxide and concentrated sulfuric acid;

[0078] (3) Prepare a mixed solution of ethanol and ethylene glycol with a glue concentration of 10%. Polystyrene beads with a diameter of 460nm are dispersed in this solvent, the liquid wets the substrate and the beads and does not volatilize easily.

[0079] (4) Parameter setting of glue homogenizer: rotating speed (300 rpm); glue homogenization time (6 seconds); glue concentration is 4%, 10%, 13% respectively, according to this parameter, put the substrate in the glue homogenizer Apply the glue solution film to obtain a uniform glue sample.

[0080] (6) The sample is placed in a constant temperature device. E...

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Abstract

The invention provides a self-assembly-colloidal-crystal computer simulation method based on heat-treatment assistance and a preparing method of colloidal single crystals. According to the self-assembly-colloidal-crystal computer simulation method based on the heat-treatment assistance, a physical model for optimizing colloidal crystal technological parameters with the Monte Carlo algorithm is built, and technological parameters such as the optimal self-assembly temperature are simulated and predicted through the physical model; meanwhile, the glue evening method is combined, a plurality of other self-assembly parameters of micro-nano ball crystals are controlled and assembled, and large-area colloidal single crystals are obtained. A theoretical model under the condition that liquid evaporation of the colloidal single crystals is considered is built; based on the theoretical model, computer simulation is introduced, and the efficiency of the self-assembly colloidal crystals is greatly improved; the algorithm of the model is efficient and convenient and fast, quite-large computing resources are not required, the obtained result and the experimental result are highly identical, and the quite-good experiment instruction value and market application prospects are achieved. According to the computer simulation method, multiple codes are specifically adopted in the method; the method for preparing the colloidal crystals is suitable for assembling micro-nano balls with the large-range size, and can also be suitable for assembling different kinds of micro-nano balls.

Description

technical field [0001] The invention relates to the technical field of simulation and preparation of colloidal crystals, in particular to a computer simulation method based on heat treatment-assisted self-assembly of colloidal single crystals and a preparation method of colloidal single crystals. Background technique [0002] With the gradual mastery of chemical controllable synthesis technology, colloidal crystals, the periodic array structure assembled by small balls, have aroused great interest of scientific and technological workers. This is because colloidal crystals have many applications, such as nanoprinting, optoelectronics, data storage, biosensing, surface plasmons, and photonic crystals. Among them, the role of colloidal crystals in nano-printing is expected to replace expensive and time-consuming electron beam etching, focused ion beam etching, photolithography and other equipment, and play an irreplaceable role in the wave of industrialization. The technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B5/00
CPCC30B5/00
Inventor 吴以治陈晨许小亮高建魁吴玲盈刘赟夕张海明刘玲朱立新
Owner TIANJIN POLYTECHNIC UNIV
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