Color printing enabled by phase change materials on paper substrate

We have coated phase change materials (PCMs) on rough and flexible substrates to achieve multicolor changeable devices. The principle of the device is based on an earlier discovery that lights have strong interference effect in PCM films, leading to various colors by reflection. In this work, paper...

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Bibliographic Details
Published inAIP advances Vol. 7; no. 12; pp. 125024 - 125024-6
Main Authors Ji, Hong-Kai, Tong, Hao, Qian, Hang, Liu, Nian, Xu, Ming, Miao, Xiang-Shui
Format Journal Article
LanguageEnglish
Published AIP Publishing LLC 01.12.2017
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Summary:We have coated phase change materials (PCMs) on rough and flexible substrates to achieve multicolor changeable devices. The principle of the device is based on an earlier discovery that lights have strong interference effect in PCM films, leading to various colors by reflection. In this work, paper substrates are laminated by parylene layers to protect the device from water before coated with functional PCM films. The PCM-based color printing (PCP) on paper is not affected by rough surfaces and shows a similar color appearance as that on smooth surfaces. In particular, the color-printed device can be patterned by UV lithography to display a clear and tunable optical image, and it exhibits a low sensitivity to the angle of view. Such PCP has potential applications for low-cost, disposable, and flexible displays.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5009945