Subwavelength nanocavity for flexible structural transmissive color generation with a wide viewing angleopen access
- Authors
- Lee, Kyu-Tae; Jang, Ji-Yun; Park, Sang Jin; Ji, Chengang; Guo, L. Jay; Park, Hui Joon
- Issue Date
- Dec-2016
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICA, v.3, no.12, pp.1489 - 1495
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICA
- Volume
- 3
- Number
- 12
- Start Page
- 1489
- End Page
- 1495
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21307
- DOI
- 10.1364/OPTICA.3.001489
- ISSN
- 2334-2536
- 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 degrees, which is of great importance to various applications, such as imaging sensors and colored display systems. In addition to the non-iridescence, 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.
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