Department of Physics, University of Central Florida, 4111 Libra Drive, Physical Sciences Bldg. 430, Orlando, Florida 32816, USA.
NanoScience Technology Center, University of Central Florida, 12424 Research Parkway Suite 400, Orlando, Florida 32826, USA.
Nat Commun. 2017 May 10;8:15209. doi: 10.1038/ncomms15209.
Dynamic, colour-changing surfaces have many applications including displays, wearables and active camouflage. Plasmonic nanostructures can fill this role by having the advantages of ultra-small pixels, high reflectivity and post-fabrication tuning through control of the surrounding media. However, previous reports of post-fabrication tuning have yet to cover a full red-green-blue (RGB) colour basis set with a single nanostructure of singular dimensions. Here, we report a method which greatly advances this tuning and demonstrates a liquid crystal-plasmonic system that covers the full RGB colour basis set, only as a function of voltage. This is accomplished through a surface morphology-induced, polarization-dependent plasmonic resonance and a combination of bulk and surface liquid crystal effects that manifest at different voltages. We further demonstrate the system's compatibility with existing LCD technology by integrating it with a commercially available thin-film-transistor array. The imprinted surface interfaces readily with computers to display images as well as video.
动态、变色表面在显示器、可穿戴设备和主动伪装等方面有许多应用。通过控制周围介质，等离子体纳米结构具有超小像素、高反射率和制造后可调节等优点，可以满足这些需求。然而，之前关于制造后调节的报道尚未涵盖单一纳米结构的完整红-绿-蓝（RGB）颜色基础集。在这里，我们报告了一种方法，该方法大大提高了这种调节能力，并展示了一种液晶-等离子体系统，该系统仅作为电压的函数就覆盖了完整的 RGB 颜色基础集。这是通过表面形貌诱导的、偏振相关的等离子体共振以及在不同电压下表现出来的体相和表面液晶效应的组合来实现的。我们进一步通过将其与市售薄膜晶体管阵列集成，证明了该系统与现有液晶显示技术的兼容性。压印表面很容易与计算机接口，以显示图像和视频。
