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Method of tunning wettability of titanium dioxide layers against water

a technology of titanium dioxide and wettability, which is applied in the direction of liquid/solution decomposition chemical coating, instruments, transportation and packaging, etc., can solve the problems of high surface tension of liquid and liquid is not well spread on the solid surface, and achieves improved hydrophilicity and hydrophobicity of titanium dioxide layers, easy control of hydrophilicity and hydrophobicity, and improved hydrophilicity

Inactive Publication Date: 2014-03-06
KOREA ADVANCED INST OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for modifying titanium dioxide layers to control their ability to attract water. The method allows for easy adjustment of the hydrophilicity (repel water) or hydrophobicity (repel oil) of the layers, making it possible to create titanium dioxide structures with improved water-repelling or water-attracting properties. The method can be used to create large-scale structures, and can be useful in various industries such as electronics, sensors, and medical devices.

Problems solved by technology

The wettability means the extent of wetting easiness of any liquid against a solid face, and if the wettability is good, the surface tension of liquid is low and thus, the liquid is well-spread on the solid surface, and if the wettability is bad, the surface tension of the liquid is high and thus the liquid is not well spread on the solid surface.

Method used

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  • Method of tunning wettability of titanium dioxide layers against water
  • Method of tunning wettability of titanium dioxide layers against water
  • Method of tunning wettability of titanium dioxide layers against water

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Embodiment Construction

[0026]Hereinafter, a method of tuning wettability of titanium dioxide layers against water of the present invention will be described in more detail.

[0027]FIG. 1 depicts a mimetic diagram of the procedure for controlling wettability of titanium dioxide layers against water.

[0028]At first, titanium dioxide layers are formed on the substrate conventionally used in the art of this field. In the present invention the titanium dioxide layers are formed by a sol-gel method, sputtering method or thermooxidation method conventionally used in the art of this field.

[0029]Next, a silica particle layer is formed on the upper part of the titanium dioxide layer. The silica particle layer in the present invention is preferable to be formed by the Langmuir-Blodgett process.

[0030]Langmuir-Blodgett process is the method for forming the ordered monolayer film by locating the material to be formed on the surface between water and air in a thin-film and collecting it by a foreign force.

[0031]The size of...

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Abstract

The present invention relates to a method of tunning wettability of titanium dioxide layers against water by nanostructuring the titanium dioxide layers to increase a hydrophilicity of the titanium dioxide layers, and also coating the nanostructured titanium dioxide layers with silane layers to increase a hydrophobicity of the titanium dioxide layers. The method of tunning wettability of titanium dioxide layers against water according to the present invention comprises: (a) step of forming titanium dioxide layer on a substrate; (b) step of forming silica particle layers on the upper part of the titanium dioxide layer; (c) step of etching a surface of the laminate prepared in step (b); and (d) step of removing the silica particle layer etched and remained in the step (c).

Description

CROSS-REFERENCES TO RELATED APPLICATION[0001]The present application claims priority under 35 U.S.C. 119(a) to Korean application number 10-2012-0098413, filed on Sep. 5, 2012, in the Korean Intellectual Property Office, which is incorporated by reference in its entirety as if set forth in full.BACKGROUND OF THE INVENTION[0002]1. Technical Field[0003]The present invention relates to a method of tunning wettability of titanium dioxide layers against water, and more specifically a method of tunning wettability of titanium dioxide layers against water by nanostructuring the titanium dioxide layers to increase a hydrophilicity of the titanium dioxide layers, and also coating the nanostructured titanium dioxide layers with silane layers to increase a hydrophobicity of the titanium dioxide layers.[0004]2. Related Art[0005]The wettability means the extent of wetting easiness of any liquid against a solid face, and if the wettability is good, the surface tension of liquid is low and thus, t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C23F1/02
CPCC23F1/02B82Y40/00C23C14/083C23C14/3464C23C14/5873B82Y30/00C23C18/1216C23C18/122C23C18/1254Y10T428/24355C01G23/047B82B1/00B82B3/00
Inventor PARK, JEONG-YOUNGLEE, YOUNG-KEUNVAN, TRONG-NGHIA
Owner KOREA ADVANCED INST OF SCI & TECH
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