Details

Autor(en) / Beteiligte

• Fan, Wen
• Zeng, Jing
• Gan, Qiaoqiang
• Ji, Dengxin
• Song, Haomin
• Liu, Wenzhe
• Shi, Lei
• Wu, Limin

Titel

Iridescence-controlled and flexibly tunable retroreflective structural color film for smart displays

Ist Teil von

• Science advances, 2019-08, Vol.5 (8), p.eaaw8755-eaaw8755

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2019

Link zum Volltext

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• Structural color materials, which use nano- or microstructures to reflect specific wavelengths of ambient white light, have drawn much attention owing to their wide applications ranging from optoelectronics, coatings, to energy-efficient reflective displays. Although various structural color materials based on specular or diffuse reflection have been demonstrated, neither efficient retroreflective structural colors nor iridescent and non-iridescent colors to different observers simultaneously were reported by existing artificial or natural structural color materials. Here, we show that by partially embedding a monolayer of polymer microspheres on the sticky side of a transparent tape, the spontaneously formed interferometric structure on the surface of air-cushioned microspheres can lead to unique structural colors that remain non-iridescent under coaxial illumination and viewing conditions, but appear iridescent under noncoaxial illumination and viewing conditions. Our findings demonstrate a smart, energy-efficient, and tunable retroreflective structural color material that is especially suitable for nighttime traffic safety and advertisement display applications.