Abstract
We present a high angular tolerant structural coloration based on strong interference effects in a nanocavity patterned at a subwavelength scale on a flexible substrate. The structural colors, fabricated over a large area by nanoimprint lithography, feature a non-iridescent performance over a wide angle of incidence up to 60°, which is of great importance to various applications, such as imaging sensors and colored display systems. In addition to the noniridescence, the transmissive colors of the proposed structure, simply consisting of triple layers, can be tuned with ease by altering a duty cycle of nanostructures, thus enabling the creation of individual RGB colors in a pixel unit via a facile one-step approach. Moreover, it is confirmed that their performances remain unchanged to the 10 mm bending radius condition, and the encapsulation effects of a polymer material on their optical properties are investigated for practical usage. The presented strategy could provide a new avenue for achieving improved efficiency and desired functionality, thereby opening the door to many potential applications, including anti-counterfeit tagging, imaging sensor systems, and color e-paper displays.
Original language | English |
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Pages (from-to) | 1489-1495 |
Number of pages | 7 |
Journal | Optica |
Volume | 3 |
Issue number | 12 |
DOIs | |
State | Published - 20 Dec 2016 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016 Optical Society of America.
Keywords
- Color
- Fabry-Perot
- Resonators
- Subwavelength structures, nanostructures