Open AccessColor printing enabled by phase change materials on paper substrate
Author(s) -
Hong-Kai Ji,
Hao Tong,
Hang Qian,
Nian Liu,
Ming Xu,
Xiangshui Miao
Publication year - 2017
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.5009945
Subject(s) - materials science , flexible display , substrate (aquarium) , parylene , lithography , optoelectronics , phase change , structural coloration , reflection (computer programming) , screen printing , nanotechnology , interference (communication) , optics , computer science , polymer , thin film transistor , engineering physics , composite material , layer (electronics) , photonic crystal , telecommunications , channel (broadcasting) , oceanography , physics , geology , engineering , programming language
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
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