Plasmonic Color Filters as Dual-State Nanopixels for High-Density Microimage Encoding
Plasmonic Color Filters as Dual-State Nanopixels for High-Density Microimage Encoding
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DOI：
10.1002/adfm.201701866
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发表时间：
2017-09-20
影响因子：
19
通讯作者：
Clark, Alasdair W.
中科院分区：
文献类型：
--
作者：
Heydari, Esmaeil;Sperling, Justin R.;Clark, Alasdair W.
等离子体颜色滤波提供了一系列新技术，用于以超过衍射极限的分辨率“打印”图像，显著改善了使用传统的基于染料的滤波方法可以实现的效果。在这里，一种新的高密度数据编码方法使用全色，双态等离子体纳米像素，可以存储在单位面积的信息量增加一倍。该技术首次用于将两个数据集编码为单个像素集，生成生动的、近乎完整的sRGB（标准红绿色蓝色空间）彩色图像和具有偏振可切换信息状态的代码。使用标准光学显微镜，可以读取的最小“单位”涉及2 × 2纳米像素（370 nm × 370 nm）。因此，双态纳米像素可以证明对于长期、高分辨率光学图像编码和防伪措施是重要的。
Plasmonic color filtering has provided a range of new techniques for "printing" images at resolutions beyond the diffraction-limit, significantly improving upon what can be achieved using traditional, dye-based filtering methods. Here, a new approach to high-density data encoding is demonstrated using full color, dual-state plasmonic nanopixels, doubling the amount of information that can be stored in a unit-area. This technique is used to encode two data sets into a single set of pixels for the first time, generating vivid, near-full sRGB (standard Red Green Blue color space)color images and codes with polarization-switchable information states. Using a standard optical microscope, the smallest "unit" that can be read relates to 2 x 2 nanopixels (370 nm x 370 nm). As a result, dual-state nanopixels may prove significant for long-term, high-resolution optical image encoding, and counterfeit-prevention measures.