2013 Fiscal Year Final Research Report
Simple Preparation and Optical Properties of Colloidal Amorphous Array
| Project/Area Number |
23245047
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Polymer/Textile materials
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
TAKEOKA Yukikazu 名古屋大学, 工学(系)研究科(研究院), 准教授 (20303084)
|
|---|
| Project Period (FY) |
2011-04-01 – 2014-03-31
|
| Keywords | コロイドアモルファス集合体 / 構造色 / 黒色微粒子 / シリカ微粒子 / 顔料 |
|---|
| Research Abstract |
There are many industrial applications for coloured pigments that have anti-fading properties. Developing a low-cost, high-volume production method for anti-fading pigments that have low toxicity and minimal environmental impact may support their widespread use. To accomplish this goal, we need to prepare pigments using abundant and environmentally friendly chemical compounds. We demonstrated that the aggregation of fine, submicron silica spherical particles produces various colours. Because the microstructure of this aggregation is isotropic and has short-range order on a length scale comparable to optical wavelengths, angle-independent structural colour caused by wavelength-specific constructive reflection is exhibited. The saturation of colour from this aggregation can be increased by adding a small amount of a conventional black particle. Colourful green pigments can be prepared by combining different sizes of fine submicron silica spherical particles with black particle.
|
-
[Journal Article] Light-induced Saturation Change in the Angle-independent Structural Coloration of Colloidal Amorphous Arrays2014
Author(s)
Hirashima, R., Seki, T., Katagiri, K., Akuzawa, Y., Torimoto, T., Takeoka, Y
-
Journal Title
J. Materials Chemistry C
Volume: 2
Pages: 344-348
-
[Journal Article] Producing Coloured Pigments with Amorphous Arrays of Black and White Colloidal Particles2013
Author(s)
Takeoka, Y., Yoshioka, S., Takano, A., Arai, S., Khanin, N., Nishihara, H., Teshima, M., Ohtsuka, Y., Seki, T
-
Journal Title
Angew. Chem. Int. Ed
Volume: 52
Pages: 7261-7265
-
[Journal Article] Structurally Coloured Secondary Particles Composed of Black and White Colloidal Particles2013
Author(s)
Takeoka, Y., Yoshioka, S., Teshima, M., Takano, A., Harun-Ur-Rashid, M., Seki, T
-
Journal Title
Sci. Rep
Volume: 3
Pages: 2371-1-7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
