METHOD OF CONTROLLING CONTACT ANGLE OF WATER

Title:

METHOD OF CONTROLLING CONTACT ANGLE OF WATER

Document Type and Number:

WIPO Patent Application WO/2005/032706

Kind Code:

A1

Abstract:

A method of hydrophobicization (increasing a contact angle of water), comprising, as fundamentally different from the conventional method of directly applying an external force to a material surface to be modified, bringing a hydrophobicization substance (substance capable of increasing a contact angle of water) released from a material of another location into contact with a material surface, especially a material surface being hydrophilic (small in contact angle of water) in the initial state without direct application of any external force. Further, there is provided a method of control capable of noncontact switching of a contact angle of water, comprising carrying out noncontact hydrophilization of the material surface having been hydrophobicized by the above method and repeating these. Still further, there is provided a method of pattern formation with the use of the above methods. Thus, noncontact hydrophilization/hydrophobicization can be carried out, and the level of hydrophilization and hydrophobicization can be regulated through material selection.

Inventors:

TAKAHASHI JUNKO (JP)
NAGAI HIDENORI (JP)
WAKIDA SHINICHI (JP)

Application Number:

PCT/JP2004/014498

Publication Date:

April 14, 2005

Filing Date:

October 01, 2004

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
TAKAHASHI JUNKO (JP)
NAGAI HIDENORI (JP)
WAKIDA SHINICHI (JP)

International Classes:

B01J19/00; B01J19/12; (IPC1-7): B01J19/00; B01J19/12

Foreign References:

JPH09241405A	1997-09-16
JP2001180145A	2001-07-03

Other References: