| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
In the presence of specific sulfides, the color of Ag films, initially sliver, changes to yellow, red, blue and green. We found that both the solubility of sulfides in water is important parameters for obtaining successful color-changeable Ag films. In order to address the mechanism of the color change of the Ag films, these Ag films have been characterized in terms of their surface morphology, particle size and chemical compositions. As the results, we conclude that the color change of our Ag films comes from the thin film interference between Ag and Ag2S layers.
One of potential applications of the Ag films is the application as imaging materials. We have explored the possibility of these Ag films as inkjet imaging media and have succeeded to write lines on Ag films using an electrostatic inkjet device. In this imaging system, the sulfide solutions act as inks for changing the color of Ag films.
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