MANUFACTURING METHOD OF COLLOIDAL CRYSTAL OF CM SIZE

Title:

MANUFACTURING METHOD OF COLLOIDAL CRYSTAL OF CM SIZE

Document Type and Number:

Japanese Patent JP2004089996

Kind Code:

A

Abstract:

To comparatively easily manufacture a colloidal crystal from an ionic colloid system.

A pH gradient or an ion concentration gradient is provided to a colloid-dispersed liquid where a colloidal particle having a surface potential is dispersed in a polar solvent, and the three-dimensional crystal consisting of the colloidal particle is manufactured by raising gradually the pH or lowering the ion concentration gradually. In order to raise the pH of the colloid-dispersed liquid, for example, a base-incorporated macromolecular gel is left standing in the colloid-dispersed liquid, a base or a base-containing solution is added to the colloid-dispersed liquid or the colloid-dispersed liquid is brought into contact with a basic solution via the macromolecular gel. In order to lower the ion concentration, an ion exchange resin is left standing in the colloid-dispersed liquid.

Inventors:

YAMANAKA JUNPEI
WAKABAYASHI NAO
YONESE MASAKATSU
ITO KENSAKU

Application Number:

JP2003288684A

Publication Date:

March 25, 2004

Filing Date:

August 07, 2003

Export Citation:

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Assignee:

JAPAN SCIENCE & TECH AGENCY

International Classes:

G02B6/13; B01D9/02; G02B1/02; G02B6/12; (IPC1-7): B01D9/02; G02B1/02; G02B6/12; G02B6/13

Domestic Patent References:

JP2002060626A	2002-02-26
JP2000044225A	2000-02-15
JP2002060626A	2002-02-26
JP2000044225A	2000-02-15

Attorney, Agent or Firm:

Akira Shimoda

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