Method of manufacturing dense nano granular film and ordered nanowire film by using coffee-ring effects

A nanoparticle and silver nanoparticle technology, which is used in the preparation of thin films, dense nanoparticles and ordered nanowire films, can solve the problems of demanding equipment and operation precision, cumbersome and complicated preparation processes, etc., and achieve low cost and easy operation. Simple, versatile effects

Inactive Publication Date: 2016-01-27
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the shortcomings of the existing preparation process, such as strict requirements on equipment and operation accuracy, cumbersome and complicated preparation process, etc.

Method used

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  • Method of manufacturing dense nano granular film and ordered nanowire film by using coffee-ring effects
  • Method of manufacturing dense nano granular film and ordered nanowire film by using coffee-ring effects
  • Method of manufacturing dense nano granular film and ordered nanowire film by using coffee-ring effects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, the preparation of compact silver nanoparticle film

[0029] 1) Dissolve 52.9 mg of trisodium citrate in 10 ml of water

[0030] 2) Dissolve 42.5 mg of silver nitrate in 250 ml of water, and heat to 85° C. with constant stirring.

[0031] 3) Pour the solution in step 1) into solution 2) and continue heating to 90-95°C. Keep warm for about 45 minutes. A silver nanoparticle solution was obtained after cooling.

[0032] 4) The silver nanoparticle solution obtained in step 3) is concentrated two hundred times by a centrifuge.

[0033] 5) Put the silicon wafers on which the nanomaterials need to be deposited into containers of corresponding size. And place it on an inclined platform with an inclination angle of about 10 degrees.

[0034] 6) Pour the nanoparticle solution concentrated in step 4) and immerse to the height of the substrate. Put the whole container into an oven and heat it to 50 degrees Celsius until the solution is completely evaporated to d...

Embodiment 2

[0036] Embodiment 2, the preparation of ordered silver nanowire film

[0037] 1) Select ethylene glycol as a solvent to prepare a silver nitrate solution with a concentration of 0.9 moles per liter, a sodium chloride solution with a concentration of 0.01 moles per liter, and a PVP (K90) solution with a concentration of 2.7 moles per liter.

[0038] 2) Measure 1 milliliter of silver nitrate solution and 0.6 milliliter of sodium chloride solution into 18.4 milliliters of PVP solution. Mix and stir and heat to 185°C for 20 minutes.

[0039] 3) The nanowire mixed solution prepared in step 2) was added into deionized water at a volume ratio of 1:1, washed, and centrifuged to obtain a pure nanowire solution.

[0040] 4) The silver nanoparticle solution obtained in step 3) is concentrated two hundred times by a centrifuge.

[0041] 5) Put the silicon wafers on which the nanomaterials need to be deposited into containers of corresponding size. And place it on an inclined platform w...

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Abstract

The invention discloses a method of manufacturing a dense nano granular film and an ordered nanowire film by using coffee-ring effects, which belongs to the technical field of film manufacturing. A substrate which needs film deposition is placed on an oblique platform with a certain angle to control movement of a three-phase line so as to control coffee-ring effects, and the method is applied to manufacturing of a nano material film. The substrate which needs nano material deposition is put to a container with a corresponding size, and placed on an oblique platform with an oblique angle of about 10 degree, a thickened nano material solution is poured, and the overall container is put in an oven for 50 degree, heat preservation is carried out until the solution is dried completely. The dense nano granular film or the ordered nanowire film can be manufactured on the substrate conveniently and quickly.

Description

technical field [0001] The invention relates to a method for preparing a thin film, in particular to a method for preparing a dense nanoparticle and ordered nanowire thin film, and belongs to the field of thin film preparation. Background technique [0002] Due to their high specific surface area, nanomaterials have unique optical, electrical and magnetic properties that many traditional materials cannot match. It has broad application prospects in the fields of material science, life science and nanophotonics. For example, the plasmon resonance characteristics and quantum size effect of nanomaterials can be used in new optoelectronic instruments and equipment. With the development of nanotechnology, various nanomaterial preparation technologies are becoming more and more mature. However, the preparation of dense, uniform and ordered nanomaterial thin films often requires special equipment or complex preparation processes. For example, spin coating method, sol-gel method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00B82Y30/00B82Y40/00G01N21/65
Inventor 胡安明周伟平
Owner BEIJING UNIV OF TECH
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