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Structural color printing via polymer-assisted photochemical deposition.
Choi, Shinhyuk; Zhao, Zhi; Zuo, Jiawei; Faruque, Hossain Mansur Resalat; Yao, Yu; Wang, Chao.
Afiliação
  • Choi S; School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, 85287, USA.
  • Zhao Z; School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, 85287, USA.
  • Zuo J; Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, 85287, USA.
  • Faruque HMR; College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing, 100124, China.
  • Yao Y; School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, 85287, USA.
  • Wang C; School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, 85287, USA.
Light Sci Appl ; 11(1): 84, 2022 Apr 06.
Article em En | MEDLINE | ID: mdl-35387968
Structural color printings have broad applications due to their advantages of long-term sustainability, eco-friendly manufacturing, and ultra-high resolution. However, most of them require costly and time-consuming fabrication processes from nanolithography to vacuum deposition and etching. Here, we demonstrate a new color printing technology based on polymer-assisted photochemical metal deposition (PPD), a room temperature, ambient, and additive manufacturing process without requiring heating, vacuum deposition or etching. The PPD-printed silver films comprise densely aggregated silver nanoparticles filled with a small amount (estimated <20% volume) of polymers, producing a smooth surface (roughness 2.5 nm) even better than vacuum-deposited silver films (roughness 2.8 nm) at ~4 nm thickness. Further, the printed composite films have a much larger effective refractive index n (~1.90) and a smaller extinction coefficient k (~0.92) than PVD ones in the visible wavelength range (400 to 800 nm), therefore modulating the surface reflection and the phase accumulation. The capability of PPD in printing both ultra-thin (~5 nm) composite films and highly reflective thicker film greatly benefit the design and construction of multilayered Fabry-Perot (FP) cavity structures to exhibit vivid and saturated colors. We demonstrated programmed printing of complex pictures of different color schemes at a high spatial resolution of ~6.5 µm by three-dimensionally modulating the top composite film geometries and dielectric spacer thicknesses (75 to 200 nm). Finally, PPD-based color picture printing is demonstrated on a wide range of substrates, including glass, PDMS, and plastic, proving its broad potential in future applications from security labeling to color displays.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article